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Why are industrial prefabricated steel chimneys so tall? Because the higher the chimney, the more the hot atmosphere of the chimney, the greater the total buoyancy force it is subjected to, the greater the pressure generated by the buoyancy, the stronger the smoke. If you only make the chimney bigger but not taller, the buoyancy of the smoke will also increase, and in proportion to the increased cross-sectional area. Pressure = pressure/force area, the pressure and area are proportional to the increase, the pressure is actually unchanged, the suction of the lower part of the stainless steel chimney will not become larger, this principle is related to the lift of the pump only with the vertical height of the water pipe, and the horizontal distance has nothing to do with it. Is the higher the industrial prefabricated steel chimney, the better? The industrial prefabricated steel chimney is made into a cone only because of the necessity of construction, and the smoke exhaust effect does not have much help. Industrial prefabricated boiler chimney is not to do the higher the better, the chimney has an optimal height, according to the exhaust volume and chimney caliber of the equipment to determine, when the exhaust volume and caliber is certain, the chimney is higher than the certain height, and then do high is meaningless. This is also the height of the chimney has an impact on the smoke exhaust effect, but the most important is not the height of the chimney, but the chimney structure, the important thing is that the chimney should be made into a conical small upper and large lower, so that the pressure inside the chimney is much greater than the pressure outside the chimney, so that the smoke exhaust effect of the chimney is better, industrial prefabricated steel chimney is built higher, Can be approximated to a better temperature gradient, the thermal expansion of the atmosphere rise results better. Rainbow Environmental focuses on the development, production and sales of stainless steel chimneys. You are welcome to join our Facebook group to discuss and communicate with us:Click me to join a group

Chimney anticorrosion for the importance of the chimney, I believe that needless to say, for the need to use the chimney of the enterprise know. Before the chimney anticorrosion, the first thing to be clear is the existing damage and actual bearing capacity of the chimney, and the current safety, reliability and durability of the chimney are comprehensively evaluated. Finally, the scientific anticorrosive construction scheme and the selection of anticorrosive materials are developed. What is the cause of the chimney corrosion protection engineering problem? 1, the construction quality does not meet the relevant design, construction and acceptance specifications, especially for the paste anticorrosive block class, due to the large amount of paste, and high-altitude operation, coupled with supervision and other measures are not in place, which is the main reason for the problem of desulfurization chimney anticorrosion. 2, part of the quality of the anti-corrosion material itself can not meet the requirements of the flue gas environment after desulfurization, at present, China is applied to desulfurization chimney anti-corrosion products of a wide variety of products, anti-corrosion products research and development, application and evaluation and identification of the results of the broad organization, inevitably mixed fish eyes, resulting in quality problems of anti-corrosion products. 3. Power generation enterprises do not have enough awareness and attention to the anticorrosion of desulfurization stacks, and do not include the anticorrosion of desulfurization stacks into the scope of desulfurization equipment management, low price bidding and unreasonable construction period requirements are very common, and neglect inspection, resulting in some desulphurization stacks once the problem is found to affect the operation of the unit, and even endanger the safety of the chimney structure. Nowadays, the description and construction of anti-corrosion chimney works are all based on the quality lifetime system. In recent years, the government has put forward clear life requirements for the painting and manufacture of smokestack corrosion protection (such as Bridges). Therefore, no matter what anti-corrosion skills are adopted for protective disposal of the chimney, it is necessary to carry out professional strict quality testing and supervision in the process of manufacturing or protection. In line with the energy of chimney anticorrosion engineering, the project operator, the construction side and the professional supervisor should attach great importance to this important link. For each anticorrosive construction process, it is necessary to put forward a clear quality skill specification. For example, the sandblasting grade or technical pre-disposal grade of the chimney anti-corrosion pre-disposal, the environmental requirements of the anti-corrosion construction, the construction process of the paint, the connection function and thickness of the correctly selected paint coating or thermal spraying coating on-site sampling detection, sampling for corrosion tests in the imitation environment, the appearance of the coating, etc., all require special personnel. Rainbow Environmental focuses on the development, production and sales of stainless steel chimneys. You are welcome to join our Facebook group to discuss and communicate with us:Click me to join a group

Boiler Chimney, Heating Boiler Chimney is a chimney made of stainless steel material. The double-layer stainless steel chimney is light in weight: it is 1/4 to 1/5 of the carbon steel chimney, so that the load on the building is small. Made of stainless steel, with excellent corrosion resistance, heat insulation; And has the characteristics of light weight, long service life, simple and convenient installation. Compared with traditional chimneys, stainless steel chimneys mainly have the following advantages: Light weight: the weight is much lighter than the traditional chimney, which is conducive to the transportation of stainless steel chimneys, and the load on the building is relatively small, which is not available in brick chimneys and cement chimneys. Easy installation: The installation of double-layer stainless steel chimneys is very simple and fast, even in small Spaces such as high-rise buildings. Good appearance: the appearance of the bright and flat, adapt to the current architectural design style, with the building supporting, will become a beautiful sculpture of the city. Good performance: double-layer stainless steel insulation chimney has good air tightness, corrosion resistance, can have the role of heat resistance, insulation and small resistance, this chimney is environmentally friendly and safe and reliable. Easy maintenance: no regular anti-corrosion treatment, and long life, usually more than 30 years of service life. Stainless steel chimney installed Rainbow Environmental believes that the light weight of the stainless steel chimney is undoubtedly, the light is relatively light on the load of the building, and the beautiful appearance of the stainless steel chimney and the building is more beautiful against each other. Its stability is not worse than the traditional chimney, the traditional chimney in addition to the external reinforcement stability after its own weight is relatively stable, and stainless steel chimney in the construction and installation, with superb technology installation of its reinforcement and stability of the technology is also nothing to say, stability is not worse than the traditional chimney effect, otherwise why will it develop so good? Secondly, because the weight of the two is different, the method of installation and removal is not the same, and finally, the advantage of stainless steel chimneys. First, if the traditional chimney is installed, it is more troublesome because it is cement or stone bricks, and the consumption period is also relatively long, and the stainless steel chimney can be installed after the factory is produced and shipped to the construction site to be fixed. Second, the removal of the traditional chimney is more troublesome, the removal of cement brick works I think we should be more or less rare, again not detailed, and the removal of stainless steel chimney is very easy, the fixed place is removed, the stainless steel chimney as a whole can be moved away, is not very convenient. Therefore, why the weight of stainless steel chimney is so light, but also so widely used, is because its function is particularly good. Rainbow Environmental focuses on the development, production and sales of stainless steel chimneys. You are welcome to join our Facebook group to discuss and communicate with us:Click me to join a group

The outer tower of Tower Structural Support Chimney is the main force. Just like the communication tower, the inner tube of the chimney is fixed in the tower, so it is called "tower chimney"; compared with the self-supporting chimney, it is characterized by a larger area , the cost is relatively high (not excessive), the safety is high, and the height-diameter ratio is large. The tower chimney is not erected by its own gravity, but is supported by the tower. It has the advantages of simple and reliable, low cost, customizable tower type, more beautiful and practical. Compared with free-standing chimneys, it is definitely more stable and can more effectively withstand the influence of various bad weather. Matters needing attention in the new construction of tower chimney Before the construction starts, all personnel involved in the construction must be organized to give careful guidance and study, and make detailed construction safety technical disclosure. At the same time, it is necessary to organize welders to carry out the necessary training and assessment of welding technical essentials, and to further do a good job in the selection of construction personnel. Unqualified welders are not allowed to use it, and it is strictly forbidden to take up posts in violation of regulations. The chimney is made of rolled steel plates connected end to end, and the vertical seam of the chimney longitudinal ring is welded by hand and by hand. The solder paste must be full, and the welding seam should be smooth and flat without pores. Compared with free-standing chimneys, tower chimneys are more stable, more beautiful and safer. If you want to make better use of tower chimneys, it is very important to understand the corrosion resistance of steel structures, which is similar on the whole. Anticorrosion treatment of tower chimney The bolts for fixing the steel chimney are respectively welded on the basic steel structure, and the spacing is reasonably and evenly distributed. The steel chimney is installed with a large crane. When the chimney tube is connected with the anchor screw, it is fixed with double nuts. When lifted to the corresponding position, pull up the wind cable to connect with the ground anchor, and the included angle between the wind cable and the ground is not more than 60°. After the overall hoisting and installation of steel chimney welding is completed, the inner and outer cylinders of the chimney should be fully painted and anti-corrosion. When painting, the wall surface of the chimney must be treated, all impurities in the welding slag should be cleaned up, the painting should be uniform, and the surface of the cylinder should be smooth and bright. The steel plates used in the manufacture of steel tower chimneys shall have a steel quality inspection certificate, and each index shall comply with the requirements of the steel chimney design documents and the relevant current national codes. The use of unqualified steel is strictly prohibited. After the steel arrives at the site, it should be sorted and placed. Steels of different specifications must not be mixed together. At the same time, the bottom of the placed steel should be flat to avoid artificial accumulation and deformation of the steel, which will bring difficulties and unnecessary troubles to construction and production. Welding electrodes must have product qualification certificates and meet the requirements of China's carbon steel electrode gb5117 standard. At the same time, it can only be used after passing the actual welding operation test. The electrode should be stored in a ventilated and dry place and can be taken out immediately. The above briefly understands the anti-corrosion treatment of the tower chimney. If you want to know more about the detailed problems, you can contact our company for consultation.

Free-standing Chimney has gradually replaced brick free standing chimney, because of its characteristics, Free-standing Chimney has many advantages that brick free standing chimney does not have. Freestanding Fireplace Chimney works well with modern buildings, making the building more beautiful, like a beautiful urban sculpture. Safe and reliable, high temperature resistance, corrosion resistance, good thermal insulation performance, straight appearance, bright and beautiful, light weight, the weight is only 1/4 ~ 1/5 of the carbon steel self-standing chimney, the support design is scientific and reasonable, the Freestanding Fireplace Chimney is stable Firmness These are the characteristics of self-supporting stainless steel chimneys. In order to make up for the shortcomings of brick-built self-supporting chimneys, such as difficult construction, large area and long construction period, Modern Freestanding Fireplace has properly improved these problems. All products are manufactured in the factory, with quality standards, easy maintenance, and no need for anti-corrosion treatment. The lifespan is not less than 50 years. The Modern Freestanding Fireplace is quick and easy to assemble on-site, and connections do not require soldering. Free-standing Chimney has the advantages of convenient installation, thermal insulation, beautiful appearance, light weight, maintenance-free, long service life and corrosion resistance. The on-site assembly is simple and reliable, and the appearance is beautiful and novel. It is a substitute for the traditional cement self-supporting chimney and iron sheet self-supporting chimney. Free-standing Chimney structures are available in circular, rectangular and triangular forms. The product is divided into segment combined structure. Product components include inner tube, outer tube, bellows, conical tube, long charging adjustment tube, tee, elbow, rain cap, funnel, ring cover, V-clamp, fixed support, sliding support According to the system requirements, choose lightning protection device, rain cap, rain skirt, corrugated compensator, sewage device, explosion-proof device, regulating valve, etc. Usually, a corrugated compensator is set at 20-25 meters to absorb the concentrated stress of thermal expansion and contraction of the flue. The prefabricated double-layer self-supporting stainless steel chimney is composed of standard pipe fittings such as straight tube, expansion joint, length adjustment pipe, tee, elbow, etc. and V-clamp, fixed bracket, hanger and other fixed parts. It can be combined into pipes and self-supporting chimneys in any direction according to user requirements. Each standard pipe is composed of inner and outer cylinders, and the cavity formed between them can be filled with thermal insulation materials or air interlayers to achieve the purpose of thermal insulation. Free-standing Chimney's design, manufacture, and inspection procedures are strictly implemented. Double-layer stainless steel chimneys have been widely used in industrial waste gas, flue gas, gas, particulate dust exhaust emissions and so on. Such as central air-conditioning gas emissions, oil-fired boiler exhaust emissions, various industrial combustion furnace exhaust emissions, restaurant oil fume emissions, etc.

The tower chimney manufacturer believes that the FRP chimney is made of vinyl ester resin and glass fiber with sufficient corrosion resistance and temperature resistance to make a glass fiber reinforced plastic cylinder section of a certain diameter and wall thickness, and then installed inside the concrete outer cylinder wall or supported by a steel structure In the middle of the frame, it is an anti-corrosion structure used to discharge corrosive fumes. The application of FRP chimneys in the field of anti-corrosion at home and abroad has a history of nearly 40 years. Tower Structural Support Chimney manufacturers believe that in industrial production, all chimneys or exhaust chimneys that discharge various treated and up-to-standard waste gases at high altitudes have anti-corrosion problems. The main factors to be considered in the anti-corrosion design of the exhaust chimney are: chemical composition, temperature, humidity, gas pressure and flow, and whether condensed acid will be formed on the surface of the cylinder wall. The dew point of the wall can be calculated from the composition, temperature and humidity of the discharge medium. There are the following situations: 1) Tower chimney manufacturers believe that under normal circumstances, high-temperature chimneys with a temperature above 150 are not easy to condense on the chimney wall, and condensed acid is rarely formed, so the corrosion is relatively light, such as chimneys that do not desulfurize in power plants. 2) The tower chimney manufacturer considers that the chimney whose temperature is lower than 150 and contains a large amount of corrosive gas and soluble salt is seriously corroded. For example, the tail gas of nitric acid production is vented, the gas temperature is less than 90 and the content of nitrogen oxides is relatively high; the tail gas of sulfuric acid production is vented, the gas temperature is less than 60 and contains a large amount of sulfur dioxide; Sulfur oxides, the flue gas temperature of alkali boilers in paper mills is below 110, and contains various sodium salts; the viscose workshop of chemical fiber factories discharges gases containing hydrogen sulfide, carbon dioxide and other gases at room temperature. In short, the chimney is generally severely corroded under the action of corrosive gases and dusts below the dew point temperature of the flue gas. Tower chimney manufacturers believe that the common corrosive gases in power plant desulfurization chimneys are unpurified sulfur dioxide and residual sulfur trioxide. Sulfur dioxide turns into sulfurous acid when it meets water, and sulfur trioxide turns into sulfuric acid when it meets water. Through ion exchange with hydrates in sulfuric acid concrete, soluble calcium salts, aluminum salts, iron salts and silica gels are generated. Alumina in clay bricks can also form soluble salts with sulfuric acid. Salt in flue gas is also a medium that cannot be ignored. Many soluble salts can penetrate the interior of bricks and concrete, absorb moisture and then crystallize and expand, destroying the material structure. The solid dust in the flue gas causes certain wear on the inner wall of the chimney, and this factor should be properly considered when selecting the material and lining of the chimney. The tower chimney manufacturer believes that the chimney that emits dry flue gas is seriously corroded at the upper part of the chimney, which is easily affected by the outdoor air and is prone to form acid condensation. For chimneys with inner linings, the parts where corrosive medium easily invades, one is the junction of the inner lining section, such as the bracket supported by the outer cylinder; secondly, the flue gas medium passes through the gap of the brick masonry: entering between the outer cylinder and the inner lining , which corrodes the outer wall. Tower chimney manufacturers believe that wet chimneys and wet (semi-dry) chimneys with strong exhaust corrosion should be made of corrosion-resistant materials or lined with corrosion-resistant materials. According to different working conditions, different anti-corrosion materials and different structural forms can be used: 1) The flue and chimney with severe corrosion can be made of plastic, acid-resistant stone, acid-resistant brick, glass fiber reinforced plastic, stainless steel, alloy steel, titanium plate, etc. According to different corrosive media and working conditions. 2) For mildly corroded chimneys, acid-resistant concrete and coated linings can be used. 3) For chimneys with severe corrosion, it is generally not suitable to use brick outer cylinders. In chemical, metallurgical, papermaking, and boiler chimneys that are forcibly removed after corrosion, the corrosion basically occurs when the outer cylinder is brick masonry. Brick chimneys (including lined ones) are difficult to reinforce after corrosion, and are prone to lose stability due to local corrosion.

The use of Steel Chimneys is quite large. For some large enterprises, they will find manufacturers to order when purchasing. I believe that everyone will definitely do this on the way to purchase, shop around, and survive the fittest. Especially in the face of many manufacturers, I don't know how to start. Below I will tell you how to do it. Hope it can help you then. When there are many steel chimney manufacturers, the first thing everyone has to do when choosing is to compare. You can first find a few manufacturers with good reputation, which you can also see on the Internet. You can find one that ranks well. Then use it for comparison, but this is often compared to price at this time. Because the manufacturers are different, their quotations are also different. When you understand, their price gap is still relatively large. You can choose what suits you. In this case, I believe that buyers do not dare to jump to conclusions. At this time, our opinion for everyone is that while paying attention to price, it is also necessary to look at the quality of steel chimney manufacturers. This is also important for customers. Because you have to know that cheap things are only happy the moment you buy them, and there is no day when you use them. On the contrary, some products with good quality are more secure, and we should pay attention to this aspect when looking for them in the future. When choosing a Steel Chimney Design manufacturer, if you see their price is very low, then don't think about it. After all, cheap is not good. This sentence is always the truth. If there are many kinds of quotations, don't choose the lower one. Because businessmen are not stupid, and no one will do business that does not make money, so we kindly remind our customers to be cautious in the procurement of steel chimneys. Our company is a company that produces steel chimneys all year round. Because he is definitely famous in this industry. That's why I share it with those in need. The products we produce are produced in strict accordance with the requirements. If you have any questions, please call at any time, and users who can cooperate for a long time are also very welcome here, and we guarantee that you will not be disappointed. While providing professional online sales services, the company has also established a complete after-sales service system to provide guidance and help for customers to encounter problems in the follow-up. How to choose a steel chimney manufacturer after reading the article, everyone will understand. In fact, this matter is not difficult. As long as you master these methods, you will know how to do it. The relevant information about steel chimneys can come at any time. Consult us. Here, we also very much welcome Chinese and foreign customers to visit our company, and hope to bring you help.

[Summary description] The tower chimney takes the external tower as the main load-bearing capacity, just like the communication tower, the inner tube of the chimney is fixed on the tower, so it is called "tower-type chimney". Its characteristics are that the floor area is higher than that of the self-supporting chimney, the cost is relatively high (not too much), the safety is high, and the aspect ratio is higher. Then, let's learn about the lower tower chimney! The tower chimney takes the external tower as the main load-bearing capacity, just like the communication tower, the inner tube of the chimney is fixed on the tower, so it is called "tower-type chimney". Its characteristics are that the floor area is higher than that of the self-supporting chimney, the cost is relatively high (not too much), the safety is high, and the aspect ratio is higher. Then, let's learn about the lower tower chimney! Tower chimneys need to stand by gravity and therefore require tower support. The advantages are simple and firm, low cost, customizable tower models, more beautiful and practical. Compared with the self-supporting chimney, it is more stable and can definitely be affected by various bad weather more effectively. The effect of the tower chimney is the synergistic effect of the thermal pressure caused by the indoor and outdoor temperature difference and the outdoor wind pressure. The value is proportional to the air density difference caused by the indoor and outdoor temperature difference and the height difference between the air supply and exhaust ports. This shows that the higher the indoor temperature is than the outdoor temperature, the taller the building, and the more obvious the chimney effect. The chimney effect of the civil building only occurs in winter. For a building, it is theoretically considered that the half-height position of the building is the neutralization surface, the room air below the neutralization surface penetrates from the outside, and the room air above the neutralization surface penetrates from the interior. 1. In winter, the air mainly flows into the room from below through various external doors. The straightforward way is to let the building pass through all the doors on the outside. For hall doors, it is particularly necessary to install air curtains on the inside of two doors, revolving doors, door buckets or outer doors as much as possible. Regarding the outer doors of the side passages and underground parking lots, etc., the doors should also be set up in winter, and at least thick curtains should be hung. In winter, the ventilation holes at the top of the elevator shaft must be properly adjusted or closed. 2. For buildings with heating, the indoor temperature of the low-rise part should not be higher than that of the high-rise part. 3. When a fire occurs, not only does the chimney effect occur through various shafts regardless of the season, but also in a small area through the air-conditioning pipeline passing through the ground, or even through the inconspicuous gaps. In contrast, the "Code for Fire Protection Design of High-rise Civil Buildings" (GB50045-1995 has the following explicit provisions). "For high-rise buildings with a height of less than 100m, every 2-3 floors of cable wells and tube wells should use floor slabs and non-combustible materials equivalent to the fire resistance limit of the floor slabs for fire partitioning. The non-combustible body with the fire resistance limit of the ground shall be used for fire partition." Due to construction defects, bridges, and various gaps formed at the root of the pipeline, it must be compacted with non-combustible materials. A tower chimney is an extraction tool for removing gases and smoke caused by fire. It is a towering structure that emits smoke into the sky. It can improve combustion conditions and reduce the pollution of smoke to the environment. The above is how the tower chimney is, if you want to know more, please feel free to contact us!

[Summary description] At the same time, organize electric welders to carry out the necessary training and assessment of welding technical essentials, and do a good job in the selection of construction personnel. Unqualified electric welders are not allowed to use them. The steel plate, the longitudinal seam of the longitudinal ring of the cylinder body are welded and welded manually and manually. The welding slurry must be full, the welding seam is smooth and flat, and there must be no pores. Then, let's learn about the precautions for new tower chimney construction! Before the start of construction, all participating construction personnel must be organized to guide and study carefully. At the same time, electric welders shall be organized to conduct necessary training and assessment of welding technical essentials, and the selection of construction personnel shall be done well. Unqualified electric welders shall not be used, and detailed construction shall be carried out. Safety and technical disclosure work, the winding method of the tower chimney in the on-the-job construction operation adopts the winding method of steel plates connected at the head and tail, and the longitudinal seam of the longitudinal ring of the cylinder body is manually and manually welded and welded. The welding slurry must be full, the welding seam is smooth and flat, and there should be no pores. Then, let's learn about the precautions for new tower chimney construction! Anti-corrosion treatment of tower chimney The fixing bolts of the tower chimney are respectively welded on the basic steel structure, and the distance distribution is reasonable and even. The installation of the steel chimney uses a large crane. When connecting the chimney barrel and the foundation screws, the angle between the wind rope and the ground is not greater than 60. After the overall hoisting and installation of the welding seam of the steel chimney is completed, the inner and outer cylinders of the chimney are fully coated for anti-corrosion. When painting, use double nuts to fix it. When it is lifted to a suitable position, pull up the wind rope and connect it with ground anchors. The wall surface of the chimney must be treated. Welding slag impurities are removed cleanly, the coating is uniform, the surface of the cylinder is smooth and bright, and the color is bright. The steel plates used in the manufacture of tower chimneys must have steel quality inspection certificates, and all indicators must meet the requirements of steel chimney design documents and relevant current national regulations. The use of substandard steel is prohibited. When the steel arrives at the site, it should be classified and placed. Do not mix different gauges of steel. At the same time, it brings difficulties and unnecessary troubles to construction and production, and the bottom of idle steel products is flat to avoid artificial accumulation and deformation of steel products. Welding electrodes used for welding must have product qualification certificates and meet the requirements of China's "Carbon Steel Welding Rod" GB5117 standard. In addition, please use it after passing the actual welding work test. Welding rods should be stored in a ventilated and dry place and taken immediately after use. Advantages of tower chimney insulation control system Safe, high temperature resistance, corrosion resistance, heat insulation, straight line, bright and beautiful, light weight. All products are factory made. Advanced production technology and easy maintenance. No preservative treatment is required. Its weight is 1/4-1/5 of the carbon steel chimney. The bracket is scientific and reasonable, and the chimney is stable and firm. Life expectancy is more than 50 years. The tower chimney does not require welding, making it easy to assemble on site. The tower chimney has the advantages of convenient installation, heat preservation, beautiful appearance, light weight, maintenance-free, long life and corrosion resistance. The structural forms of the tower chimney are circular, rectangular and triangular. Products are divided into staged combination structure. Simple and reliable, beautiful and novel in appearance. It is an alternative to traditional cement chimneys and iron chimneys. According to needs, including Yuhu, Yuhu, Yuhu, Yuhu, Yuhu, Yuhu, Yuhu, Yuhu, etc., smoke exhaust device, explosion-proof device, regulating valve, etc. In order to absorb the concentrated stress of flue expansion and cold contraction, a 20-25m corrugated compensator is generally installed. After the prefabricated components of the tower chimney have the advantages of convenient, fast and reliable installation, they can be assembled into pipes and chimneys in any direction according to site requirements. The above are the precautions for new tower chimney construction. If you want to know more, please feel free to contact us!

[Summary description] The tower chimney takes the external tower as the main load-bearing capacity, just like the communication tower, the inner tube of the chimney is fixed on the tower, so it is called "tower-type chimney". Its characteristics are that the floor area is higher than that of the self-standing chimney, the cost is relatively high (not too much), the safety is high, and the height-diameter ratio is higher. Tower chimneys need to stand by gravity and therefore require tower support. The advantages are simple and firm, low cost, customizable tower models, more beautiful and practical. Compared with self-supporting chimneys, it is more stable and can definitely be more effectively affected by various bad weather. Then, let's learn about the advantages of lower tower chimneys! The tower chimney takes the external tower as the main load-bearing capacity, just like the communication tower, the inner tube of the chimney is fixed on the tower, so it is called "tower-type chimney". Its characteristics are that the floor area is higher than that of the self-standing chimney, the cost is relatively high (not too much), the safety is high, and the height-diameter ratio is higher. Tower chimneys need to stand by gravity and therefore require tower support. The advantages are simple and firm, low cost, customizable tower models, more beautiful and practical. Compared with self-supporting chimneys, it is more stable and can definitely be more effectively affected by various bad weather. Then, let's learn about the advantages of lower tower chimneys! The tower chimney is a large industrial chimney, which is composed of various forms such as tube-in-barrel, binoculars, three-barrel to four-barrel. Chimneys are generally large in diameter. For example, in the case of a 300WM unit, the diameter of a single simple tube is between 4.5-5m, and the diameter of a single tube of a 600WM unit is between 6-7m. The tube is in the form of a clustered steel inner tube. Features of tower chimney: Compared with other forms of chimneys, tower chimneys have high cost, long construction period, and certain requirements for floor space, which are suitable for large and medium-sized factories; The area and shape of the top of the chimney of the tower are determined by the temperature of the flue gas, the volume of the flue gas, the outflow velocity of the flue gas and the rising height of the flue gas; The clean space between the outer cylinder and the inner cylinder must have installation space, and there must be spaces and holes for the steel inner cylinder to enter in sections; The tower chimney must be able to withstand extreme temperatures, be able to withstand the chemical corrosion of the flue gas, including steady-state and transient changes, and be able to withstand the abrasion of particles in the flue gas flow, and the inner tube must be left with a certain thickness. The fixing bolts of the tower chimney are respectively welded on the basic steel structure, and the distance distribution is reasonable and even. The installation of the steel chimney uses a large crane. When connecting the chimney barrel and the foundation screws, use double nuts to fix it. When the chimney is hoisted to a suitable position, pull up the wind rope and connect it with ground anchors, and the angle between the wind rope and the ground is not more than 60 degrees. After the overall hoisting and installation of the welding seam of the steel chimney is completed, the inner and outer cylinders of the chimney are fully coated for anti-corrosion. When the paint is applied, the wall surface of the chimney must be treated. Welding slag impurities are removed cleanly, the coating is uniform, the surface of the cylinder is smooth and bright, and the color is bright. The steel plates used in the manufacture of tower chimneys must have steel quality inspection certificates, and all indicators must meet the requirements of steel chimney design documents and relevant current national regulations. The use of substandard steel is prohibited. When the steel arrives at the site, it should be classified and placed. Do not mix different gauges of steel. At the same time, the bottom of idle steel products is flat to avoid artificial accumulation and deformation of steel products, which brings difficulties and unnecessary troubles to construction and production. The above are the advantages of the tower chimney. If you want to know more, please feel free to contact us!

[Summary description] In fact, in simple terms, Steel Chimneys is an energy-saving steel chimney with micro-positive pressure exhaust and combined cooling. After years of engineering practice, steel chimney system engineering has been recognized by many companies. Steel chimney manufacturers have established energy-saving awareness from top to bottom, and have taken energy-saving measures within their capabilities. The steel chimney system has been modified, and the air duct material with low thermal conductivity and high sealing performance has been replaced as much as possible. Industrial Chimney Design has no leakage and other phenomena, and the sewage effect is very environmentally friendly. Steel Chimney Design has reasonable structure, advanced manufacturing technology and excellent running performance. In fact, simply put, Industrial Steel Chimney is an energy-saving steel chimney with micro-positive pressure exhaust and combined cooling. After years of engineering practice, steel chimney system engineering has been recognized by many companies. Steel chimney manufacturers have established energy-saving awareness from top to bottom, and have taken energy-saving measures within their capabilities. The steel chimney system has been modified, and the air duct material with low thermal conductivity and high sealing performance has been replaced as much as possible. The steel chimney has no leakage and other phenomena, and the sewage discharge effect is very environmentally friendly. The steel chimney has a reasonable structure, advanced manufacturing technology and excellent operating performance.

Under the influence of national energy conservation and emission reduction, the emission requirements of various industries are also constantly increasing. As a result, the demands placed on the Freestanding Fireplace Chimney in exhaust gas are constantly increasing. The main function of Modern Freestanding Fireplace is to generate a certain suction, so that the flue gas flows continuously in the furnace, and the flue gas is discharged to the high altitude, so as to reduce the pollution of the flue gas to the environment. Through the exploration and research of domestic and foreign scientific research institutions, it is found that Free-standing Chimney can not only solve the problem of easy cracking and aging of concrete chimneys to a certain extent, but also better solve the problem of flue gas pollution. Therefore, studying the structural system of steel chimneys has important theoretical and applied value to the entire industry. Free-standing Chimney structures combine the respective advantages of tower and traditional self-supporting steel chimneys. Compared with the common tower chimney, the cylinder not only bears its own gravity load, but also forms a huge space truss system with the surrounding rods. In order to jointly resist the horizontal wind load and earthquake action, the bending and shearing force of the cylinder material itself is fully utilized, which reduces the amount of steel used in the entire project and reduces the cost.

A fireplace chimney serves as a ventilation system to emission smoke, gases, and other byproducts of combustion from a home. It also helps to regulate the temperature of the fire and prevent the buildup of dangerous levels of carbon monoxide. Additionally, a fireplace chimney can add aesthetic value to a home and provide a cozy ambiance. Rainbow Environmental Equipment Co., Ltd, professional chimney manufacturer enjoying good reputation both home and abroad. An enterprise equipped with testing devices rival those of TUV Lab; An enterprise whose products are listed to CE, UL and ULC certification; A member of CICIND; An enterprise with chimney installation qualification and safety production license; A national high-tech enterprise; Rainbow is dedicated to providing its partners qualified products and technologies guaranteed by scale production, standardized core spare parts and normalized manufacturing process.

An industrial steel chimney stack is a tall, vertical structure made of steel that is used to vent exhaust gases and smoke from industrial processes. The purpose of an industrial chimney stack is to provide a safe and efficient way Industrial steel chimney stacks are typically made of high-quality steel that is resistant to corrosion and can withstand high temperatures. They are designed to withstand the harsh conditions of industrial environments and are often equipped with features such as ladders, platforms, and lightning protection systems. In addition to their functional purposes, industrial steel chimney stacks can also serve as a visual landmark for industrial facilities. They can be designed in a variety of shapes and sizes to complement the architecture of the building and add to the overall aesthetic appeal of the facility. Rainbow Environmental Equipment Co., Ltd, a high-tech enterprise widely known as Rainbow, specializes in providing solutions for the gas exhausts and urban smoke gas treatment in urban areas through research, development and production of metal venting pipes for the emission of various high-temperature flue gases. Established in 1993, Rainbow covers an area of more than 16 acres and has established 3 production sites in China (Suzhou Headquarters, Chengdu and Tianjin) and two branches in Germany and the United States. Staffed with nearly 1000 employees, Rainbow offers an extensive product portfolio for the venting market that covers the industrial, residential and commercial industry, such as chimneys, grease purifiers, kitchen grease ducts, laundry shafts, gas control instruments and gas online monitoring system. An enterprise whose products are listed to CE, UL and ULC certification; A member of CICIND; An enterprise with chimney installation qualification and safety production license; Rainbow is dedicated to providing its partners qualified products and technologies guaranteed by scale production, standardized core spare parts and normalized manufacturing process.

1. Size: The size of the chimney pipe should be appropriate for the size of the fireplace or stove. A chimney that is too small will not allow for proper ventilation, while a chimney that is too large will allow too much air to escape. 2. Material: Chimney pipes are typically made from stainless steel, galvanized steel, or aluminum. Stainless steel is the most durable and long-lasting, while galvanized steel is more affordable. Aluminum is the least expensive but is not as durable as the other two options. 3. Insulation: Insulated chimney pipes are better at preventing creosote buildup and keeping the chimney clean. They are also more efficient at keeping the heat inside the home. 4. Type: There are two types of chimney pipes: single-wall and double-wall. Single-wall pipes are less expensive but are not as efficient at keeping heat inside the home. Double-wall pipes are more expensive but are better at preventing heat loss. 5. Brand: Choose a reputable brand that has a good reputation for quality and durability. 6. Installation: Make sure to follow the manufacturer's instructions for installation and hire a professional if necessary. 7. Local code requirements: Check with your local building codes to ensure that the chimney pipe you choose meets the requirements for your area.

General provisions for steel chimneys: 1. Steel chimneys include tower type, self-supporting type and cable type. Tall steel chimneys can be tower type, low steel chimneys can be self-supporting, and thin and tall steel chimneys can be cable-type. 2. The calculation of steel towers and cables can be carried out in accordance with the relevant provisions of the national standard "Code for Design of Tall Structures" (GB 50135). 3. The materials used first for steel chimneys should comply with the provisions of the national standard "Code for Design of Steel Structures" (GB 50017). Steel chimney construction technical scheme: 1. One day before construction, prepare materials, tools, etc., and prepare for the start of construction. 2. During construction, the "Construction Safety Work Regulations" must be strictly implemented, the requirements of construction specifications for high-altitude operations must be strictly followed, to prevent falling objects from injuring people, and strictly implement the work monitoring system. , must strictly implement the construction site management system. 3. First analyze the chimney drawings. 1) Steel chimney construction is made of steel: the thickness of the steel plate is 16mm, the length is 20m, it is processed into a cylindrical shape with a diameter of 1.4m by a plate rolling machine, and then all seams are welded internally and externally. When welding, the welding slurry should be full. , No holes, smooth surface. 2) Among them, the bottom flange of the steel chimney construction is made of a plate with a thickness of 20mm, a hole diameter of 28mm, and is connected to the ground foundation with bolts of ￠26mm×100mm. 3) In the construction of the steel chimney, three equidistant fixed points are welded from the bottom to the top of the chimney from 5m to 20m, so as to connect the wind cable and the ground anchor point for connection and fixation. 4) A chimney foundation with a diameter of 2m and a depth (thickness) of 2.3m is poured with commercial concrete on the ground. 5) ￠16㎜ rebar is used for the chimney foundation reinforcement structure, the density of rebar is 24, and the upper and lower connections are bound with ￠12㎜ rebar. 6) The bolts for the construction of the foundation and the steel chimney are pre-buried in the reinforced concrete foundation, and the distance distribution is reasonable and even. 7) When the steel chimney is constructed and installed using a truck crane, when the chimney cylinder is connected with the foundation screws, it is fixed with double nuts. When the chimney is lifted to the corresponding position, the wind cable is pulled up to connect with the ground anchor, and the angle between the wind cable and the ground is not more than 60°. 8) After the overall hoisting and installation of steel chimney construction and welding, the inner and outer cylinders of the chimney should be fully painted and anti-corrosion. When painting, the surface of the chimney should be treated, and all the impurities in the weld slag should be cleaned up. The surface of the cylinder is smooth and smooth, and the color is bright.

There are two types of steel for making Free-standing Chimney, stainless steel and carbon steel. While both are made of steel, the difference is huge. Stainless steel industrial self-supporting chimneys have gradually replaced brick self-supporting chimneys. Due to its own characteristics, it has many advantages that brick self-supporting chimneys do not have. Stainless steel can work safely for a long time at the temperature of -270C -400C, no matter in high temperature or low temperature, no harmful substances will be precipitated, and the material performance is quite stable. The stainless steel material is safe and non-toxic, non-corrosive, non-exudable, non-odorous, non-turbid, and will not cause secondary pollution to the water quality, and the hygiene and safety standards are fully guaranteed. If there are special corrosion requirements or external oxidation and corrosion resistance requirements, galvanizing on the stainless steel surface can also be selected to stabilize chemical properties, and coatings can be applied to beautify and prevent corrosion. Stainless steel has corrosion resistance, enhanced strength, steel deformation is not easy to crack and environmental protection, not easy to rust, and has good ductility and toughness. Suitable for harsh environments (humidity, acid and alkali, etc.). To sum up, various industrial chimneys, such as Free-standing Chimney, tower chimney, cluster chimney, including sleeve chimney, are all made of stainless steel. Free-standing Chimney has no external auxiliary fixation, so certain techniques and calculations are required to ensure the safety of Modern Freestanding Fireplace. Today I will tell you about the easiest way to damage a self-supporting chimney: crosswind resonance. So how to reduce lateral wind vibration? What action should be taken? Let us share with you measures to reduce lateral wind vibration: When it is judged that lateral wind vibration occurs and plays a controlling role, there are mainly two schemes to reduce lateral wind vibration. One design solution is to increase the cross-section to make the chimney meet the bearing capacity requirements, that is, to increase the diameter of the self-supporting chimney to make it more stable. However, this solution will increase operational difficulty and manufacturing costs, and is generally considered an inferior strategy. Another solution is to adopt shock absorption measures, that is, to reduce resonance by adding or changing some devices, so as to protect the safety of Modern Freestanding Fireplace. We generally have two types of shock absorption: First, set up a "wind shield ring" to eliminate the regular vortex shedding phenomenon through the wind shield ring, so as to achieve the effect of eliminating or reducing lateral wind vibration. Setting conditions and requirements of the windshield ring: 1. The form and size of the windshield ring, the thickness of the spiral plate is not less than 6mm, and the plate width is 0.1-0.12 times the outer diameter of the chimney. There are three spiral plates evenly distributed along the circumference, and the spiral pitch can be 5 times the outer diameter of the chimney. 2. The shape factor of Free-standing Chimney within the crushing air circle should be selected according to industry regulations. 3. The position of the windshield ring should be set within the height range of the top of the Modern Freestanding Fireplace.

Chimneys are very common in industrial buildings. In the past, tall chimneys were generally made of concrete chimneys. However, the construction of ultra-high concrete is difficult, the quality is not guaranteed, and the construction period is long. With the improvement of steel production capacity and high-altitude hoisting capacity, steel chimneys Applications are becoming more and more widespread. Today, I will talk with you about the design of tower-type steel chimneys, and hope to be helpful for the engineering application of steel chimneys. Steel Chimneys include three types of self-supporting, cable-stayed and tower-type. Self-supporting steel chimneys are mainly subjected to bending and cannot give full play to the performance of structural materials, and are mainly used for low chimneys. The cable-type steel chimney is subjected to the combined force of the bending of the steel cylinder and the tension of the zipper, which can better exert the performance of the material and can be used for thin and tall steel chimneys. However, the arrangement of the zipper in engineering applications is often limited by many , the application is not very extensive. The tower-type steel chimney generally relies on the steel cylinder to bear the vertical force of its own weight, and the tower bears the horizontal load, while the tower-type steel chimney as a whole is a vertical truss, and the material properties are fully exerted, which is economical and applicable, and should be widely used. Loads of Tower Structural Support Chimney 1. Structure and equipment weight. The self-weight of the structure and equipment shall be calculated according to the relevant provisions of the load code. When calculating the self-weight of the tower, the weight of the gusset plate, flange and weld should be considered. Generally, the self-weight of the tower member can be multiplied by a factor of 1.15 to 1.20. 2. Live load. The loads on the maintenance platform, rest platform and aviation obstruction light maintenance platform on the tower are all live loads. The live load of the maintenance platform can be determined according to the actual situation, but it shall not be less than 3KN/m2. The top platform shall consider the ash accumulation load, the concentrated load of a single member of the rest platform shall not be less than 1KN, and the uniform load can be taken as 2 KN/m2. 3. Wind loads. Wind loads play a decisive role in the tower structure. The structural internal force caused by wind load accounts for about 80% to 90% of the total internal force. Therefore, in the design of tower-type steel chimneys, it is a very important consideration to minimize wind resistance. The system coefficient of various section steels is μs=1.3. For circular cross-section rods, the shape coefficient depends on the Reynolds number. When the diameter of one-shaped cross-section rods is small, μs=1.2, and the diameter is large and H/d≥ At 25, μs=0.6. Therefore, circular section rods have the least resistance to wind. In order to simplify the calculation, in the calculation of wind load, the windshield area of all connecting plates is not calculated separately, and only the total area of the members is appropriately increased. For round steel structure and steel pipe structure, the increase factor can be 1.1, and for round steel composite structure and section steel structure, 1.15~1.2 can be used. For tall structures, in addition to the load calculation in the downwind direction, the vibration check calculation in the crosswind direction should also be carried out. 4. Ice load. In areas with high air humidity, when the temperature drops sharply, the surface of the structure will freeze, which is called ice wrapping. Freezing mainly depends on the meteorological conditions in the area where the building is located, that is, the size of the air humidity and the temperature. Colder regions are not necessarily the places with the thickest ice, and warmer places are not necessarily the places with thinner ice. The higher the ground in the same area, the thicker the ice pack. Generally, ice wrapping occurs when there is no or weak wind. However, in the calculation, it should be considered together with the wind of moderate intensity, and the combination coefficient is taken as ψcw=0.6. The temperature when wrapping ice is calculated as -5°C. 5. Temperature load. The connection between the tower platform and the chimney is generally connected by a slideway, which can be freely deformed in the longitudinal direction. The slideway should have sufficient lateral expansion clearance to ensure free lateral deformation. The temperature stress and temperature deformation of the tower structure can generally be ignored. 6. earthquake load. In the seismic fortified area, the seismic load should be considered.

The setting requirements of the Free-standing Chimney insulation layer: (1) When the flue gas temperature is higher than the specified maximum heating temperature of the cylinder wall, the insulation layer should be installed. (2) When the flue gas temperature is lower than 150°C and the flue gas may corrode the chimney, an insulating layer should be provided. (3) The thickness of the thermal insulation layer is determined by temperature calculation, but the minimum thickness should not be less than 50 mm, and for the total radiation type chimney, the thickness of the thermal insulation layer should not be less than 75 mm. (4) The insulation layer should be firmly connected with the chimney wall. When using block material or cast-in-place materials, anchors or wire mesh can be used for fixing. A steel ring can be installed at the top of the chimney to protect the edges of the insulation. The thickness of the steel plate ring shall not be less than 6mm. (5) In order to support the weight of the thermal insulation layer, an angle steel reinforcing ring can be arranged on the inner surface of the steel chimney along the height direction of the chimney every 1-1.5m. (6) When the temperature of the self-supporting chimney is higher than 560, the anchoring of the thermal insulation layer can be made of stainless steel; when the temperature of the flue gas is lower than 560, it can be made of ordinary carbon steel. (7) For self-supporting chimneys without thermal insulation layer, the chimneys within the height range of 2m at the bottom should take external thermal insulation measures or protective railings to prevent accidents. Setup Requirements for Free-standing Chimney Liners: The liner is set up for one or more of the following reasons. 1) Insulation to prevent the temperature of the cylinder wall from being too high; 2) Insulation to avoid condensation caused by low flue gas temperature and reduce the corrosion of the cylinder wall. Lining material for Modern Freestanding Fireplace. The lining material should be comprehensively determined according to flue gas temperature and flue gas corrosion characteristics. 1) Refractory bricks, the maximum operating temperature can reach 1400, the weight is large, and the construction is heavy. 2) Diatomite bricks, with a maximum operating temperature of 80°C, light weight, good thermal insulation effect, and low expansion coefficient; 3) Acid-resistant bricks, used for strong corrosive flue gas, not for chimneys where flue gas temperature fluctuates frequently; 4 ) Ordinary clay brick, with a maximum service temperature of 500, high self-weight and good acid resistance; 5) Heat-resistant concrete, different heat-resistant concrete (200-1200) can be configured according to flue gas temperature requirements, which can be cast-in-place or prefabricated; 6 ) Diatom concrete, with broken brick as aggregate, alumina cement, can be cast-in-place or prefabricated, allowing heating temperature 150-900, is a good thermal insulation material; 7) Modern Freestanding FireplaceFC-S spray paint is suitable for temperature 400 Steel chimney. Main components: binder - special cement; aggregate - aggregate with high silicon calcined wax as the main component; acid-resistant additive fine powder. Construction method: Now the inner wall of the cylinder is welded with short bars, hung with steel wire, and then sprayed with FC-S paint with a thickness of 60-80mm.

In order to eliminate the exhaust gas generated in the production process, the factory will install chimneys. This matter is not only related to environmental pollution issues, but also involves the internal safety issues of the enterprise. Therefore, the installation cannot be taken lightly. Then, what are the installation requirements for boiler chimneys? The boiler chimney is an indispensable item in the construction and layout of the boiler room. The State Environmental Protection Administration has also made clear requirements for the height and diameter of the chimney in the boiler room. For example, if the total installed capacity of the boiler room is less than 0.7mw, the height of the chimney shall not be less than 20 meters. When there is a building within a radius of 200m around the newly built chimney, the chimney should be more than 3m higher than the tallest building. 1) The installation of the boiler chimney should be carried out in the weather without wind and rain as much as possible. It should not be carried out when the wind force is greater than level 5. The chimney can be hoisted as a whole or in sections from the bottom to the top. The specific method depends on the situation on site. 2) When installing the Steam Boiler Chimney, asbestos rope is placed between the flanges, and the verticality of the chimney is checked by the method of the vertical line. 3) The galvanized steel wire rope that restrains Boiler Chimney Design needs to be tightened with turnbuckle bolts (the other end of the steel wire rope should be fixed on other buildings), and the tension of the three steel wire ropes should be roughly equal. 4) If the environment requires to increase the height of the chimney, the lightning protection device and multi-stage tensioning can be adopted depending on the weather conditions to ensure safety and stability. 5) The height of Stove chimney is generally about 8 meters, the horizontal distance is short, the elbows are few, and the lower limit is taken; the horizontal distance is long, the elbows are more, and the upper limit is taken. The horizontal distance between the chimney position and the boiler smoke outlet should not exceed 6 meters; the 90° arc elbow should not exceed 3, otherwise the cross-sectional area of the flue should be appropriately enlarged and the height of the chimney should be increased. 6) There are two installation methods for the boiler chimney: one is to directly install it on the boiler body exhaust nozzle; the other is to place it on the ground, and then connect the chimney to the boiler main engine exhaust nozzle through the connecting flue. When designing and installing chimneys and flues, the following requirements should be met: The flow cross-sectional area of flues and chimneys should not be less than the cross-sectional area of the boiler exhaust port. and 1.2 times.