Construction team of chimney turnover formwork -- senyue construction, based in Jiangsu, serving the whole country
After the technical demonstration, it is confirmed that after the adoption of corrosion-resistant steel, the top and side walls of the flue in some sections may not adopt anti-corrosion measures, but enough corrosion allowance shall be considered. For a factory, it is more important. Regular maintenance of chimneys can not only prolong the life of chimneys, but also make chimneys serve the factory better, and the factory can also reduce losses and get better development. It is required to paint evenly without missing or flowing. After curing, it shall be leveled with sandpaper. Brush one layer of epoxy resin, soak the glass cloth into the lining layer, and brush one layer of epoxy resin at the same time. The second and third layers of lining are the same. After the epoxy resin is cured, use the epoxy putty to finish and level the surface. After the epoxy putty is cured, brush one layer of epoxy resin top coat. After the curing, brush the epoxy resin top coat for acceptance and delivery. The water level of the anti-corrosion high-pressure heater system of the power plant should avoid low water level or no water level operation. In the anti-corrosion and desulfurization project of the chimney, the high-pressure heater system must prevent the pressure valve from opening too large, which will lead to fast Su water filling in the water pipe, too full and too high, and will affect the normal use of the pipe due to too large pressure.
The supporting structure of the sleeve type exhaust funnel is provided with an operation platform, which can be maintained between the inner and outer cylinders. The protection work of "four entrances" and "five frontiers" on the construction site shall participate in the approval of safety technical measures in the construction scheme and the acceptance work of on-site safety protection. Jiangsu senyue Construction Group Co., Ltd., formerly known as Jiangsu senyue aerial work Engineering Co., Ltd., was established in 2006. According to the company law of the people's Republic of China, it is registered in Tinghu branch of Yancheng Administration for Industry and Commerce of Jiangsu Province. Its nature is a limited liability company with a registered capital of 100.88 million yuan. Wear and corrosion: the solid particles in the exhaust gas and the surface of the equipment are subject to turbulent friction, which gradually thins them and accelerates the corrosion process. In fact, from the current construction requirements and industry development of new chimneys, the change of this new concrete chimney slipform technology instead of the traditional chimney construction technology has not affected everyone's chimney construction task. As a kind of high efficiency block speed mechanical construction method of modern (reinforced) concrete engineering structure, the construction technology of sliding form chimney is widely used in the sliding form engineering of chimney. The construction cost of coating anticorrosion method of chimney turnover formwork construction team is lower, but the cost of outdoor maintenance is higher, and the anticorrosion effect is not good, so it is more used for indoor steel structure or relatively easy to maintain outdoor steel structure. Safety net frame, which is made of light steel, with a spacing of about 1m. The safety net is woven with nylon rope, and the outer diameter of the chimney is variable. Generally, the outer ladder can be used to fasten the safety net bracket with steel wire rope hoop upward, and the safety net bracket can be lifted up with the operation platform. However, FRP exhaust pipe can be wound with various resins and glass cloth. Generally, the service temperature can be above 80 ℃, and some can be as high as 200 ℃ (such as high cross-linked epoxy vinyl ester resin).
In view of the coating thickness of anticorrosive coating can be changed from high to low, the construction speed is relatively fast, the process is easy to be controlled intuitively, and the repair is convenient, which is more suitable in terms of technical economy and operability, but the key is the selection of anticorrosive coating manufacturers. At the same time, 4-5 coats of paint shall be applied during construction, and the next coat of paint shall be applied after the paint is dried to 80% or completely dried. Static crushing demolition is to drill holes in the components to be demolished, install the expanding crack agent, expand the concrete after the expanding crack agent plays a role, and then use air pick or manual chiseling to peel the expanding concrete. In order to maintain the stability of the inner lining, a brick shall be staggered up and down to the outer wall and supported on the outer wall at the height of every 50cm or 8 fire bricks in the vertical direction and every 1m of the circumference in the horizontal direction. In large-scale thermal power plants, wet flue gas desulfurization is generally used, and the flue gas temperature drops below the dew point, so acid flows down the inner cylinder wall, which is very easy to corrode the inner lining, causing the inner lining to crack and the outer cylinder to crack.
The cylinder body shall be repaired with small bricks. When the thickness of the bottom of the cylinder wall is greater than 3 / 2, half of the bricks can be used for the inner and outer layers, but the quantity shall not exceed 30% of each quantity, and the bricks less than 1 / 2 of the bricks shall not be used. In this way, after the chimneys are all unobstructed, the intensity of flue gas emission and the pull-out wind force are also coming up, and the direct benefit is to reduce the use of induced draft fans (power saving), and the coal combustion is complete (coal saving). The company is an economic entity with independent operation, independent accounting, self financing and independent legal personality. It is mainly engaged in anti-corrosion of chimney inner wall, chimney desulfurization, chimney demolition, chimney beautification, chimney construction, chimney slipform construction, high-altitude installation, high-altitude maintenance, high-altitude construction, high-altitude anti-corrosion, high-altitude cleaning, pipeline anti-corrosion and heat preservation, steel structure anti-corrosion, lightning rod installation and communication iron Tower maintenance, water and leakage stoppage, special anti-corrosion and other high-altitude work. According to the relevant specifications, the chimney structure shall meet the requirements of the design reference period of 50 years, and the design of smoke exhaust function shall meet the requirements of the design life of the process system of 30 years. No matter titanium alloy or nickel alloy is a kind of material with good corrosion resistance. During lining, a layer of adhesive with the same width as the lined glass cloth shall be evenly brushed on the part where the glass cloth is to be lined, and then a layer of cloth shall be lined. The glass cloth shall be closely pasted to drive away the bubbles, and then a layer of adhesive shall be coated on the glass cloth, and then gradually lined along the concrete base. The same method shall be used for lining. Chimney demolition needs to be done well in safety regulations: protection is an important part of demolition blasting construction, which can not only prevent the harm caused by individual flying stones, but also reduce the blasting noise. The professional construction personnel shall check the availability of the top fixed steel wire rope and safety rope, and inform the professional construction personnel to start the construction from the chimney ladder to the top work transfer platform after checking that there is no hidden danger, and carry out the construction according to the requirements of the safety rope. The common anticorrosive material of chimney rubber in the domestic market is silicone rubber and polyurea, but the product is not resistant to high temperature, has excellent waterproof and acid proof performance, and is not conducive to the direct discharge of coal-fired machine for a long time.
Therefore, in view of these relatively special emissions, the service providers of desulfurization and anti-corrosion of chimneys provide a more professional anti-corrosion method, which is to use new materials and technologies for desulfurization and anti-corrosion. Check its quality, if there are defects such as burr, flow and bubble, remove them immediately. Strong and durable, from the foundation, it helps to improve the firmness and use effect of chimneys. The cross brace is the horizontal bearing of the frame and is used to place the ladder and foot pedal components. It is connected with the vertical rod through the pin storehouse. Especially in the emission of industrial waste gas, before the emission of waste gas, the nitrogen oxide in the waste gas shall be converted into no and water reasonably, and the Danyang traffic in the flue gas of the chimney shall be cleaned and filtered as far as possible before the emission.
Generally speaking, the hot-dip zinc coating is dense and thin, generally about 30-50 μ M. During construction, sand blasting shall be carried out on the surface of steel members to make the surface show metallic luster and roughen, and then the metal shall be melted by burning the arc between two continuous metal wires, and the arc zinc and aluminum coating shall be formed by spraying them on the metal members which are pre sand blasting and derusting, so as to form a long-term anti-corrosion composite coating. In addition, it is worth mentioning that this kind of high thermal conductivity silica brick combustion material is applied to the nano micron high radiation cladding technology, and the application of this new type of combustion material on the vertical flue of the carbonization chamber wall will improve the radiation ability of the carbonization chamber wall and increase the thermal conductivity of the wall, so as to reduce the temperature of the combustion gas in the vertical flue and generate nitrogen oxides in the flue gas of the chimney The amount is reduced. High altitude demolition works: demolition of various chimneys, chimney blasting, brick chimney directional blasting, cement chimney blasting, water tower blasting, water tower demolition (manual demolition, directional demolition), tower demolition, urea prilling tower demolition, TV Tower demolition, iron cutting frame demolition, high-altitude concrete frame demolition, and other high-difficulty demolition works. Chimney turnover formwork construction team
Hot dip galvanizing anticorrosion technology is an advanced and widely used technology of Zui. It is also a good anticorrosion method of steel with good effect and economic benefit. It is commonly used in outdoor steel structure which is seriously corroded by atmosphere and is not easy to maintain.
The anti-corrosion of brick chimney shall take full account of the site conditions and scientific use of the operation platform (the construction adopts the special annular double-layer hanging basket for high-altitude operation, the inner layer is used as the transportation of personnel and materials, the outer layer is used as the construction operation, and the cantilever can be installed and adjusted to adapt to the operation radius in the chimney). The chimney shall be divided into two positions from the middle to carry out the construction, and the organization and arrangement shall be white The team of shift and night shift 2 shall carry out day and night construction without stopping for 24 hours. Every industrial department or unit should regulate its own emission behavior and establish strict supervision and inspection system for the emission of NOx from the flue gas of the coke oven after combustion, so as to reduce the burden of the emission of NOx from the flue gas of the coke oven industry in China, so as to reduce the emission of NOx from the flue gas of the coke oven in a real sense. It is required to cut off all access to or through the blasting area, prohibit any personnel and vehicles irrelevant to the blasting from entering the dangerous area, prohibit personnel (including staff in nearby buildings and nearby staff, except for important posts) from staying in the warning area, and require all personnel to evacuate to the safe area beyond the warning area.
The tools and materials used for chimney removal shall be fixed in strict accordance with the regulations during hoisting to ensure no falling; safety net shall be set up around the tower body to prevent high-altitude falling. Therefore, for this kind of chimney, anti-corrosion work must be done. So, don't you know what its anti-corrosion measures and construction have? Faced with such an urgent market demand, the construction team of chimney turnover formwork has introduced the technology and experience of chimney anti-corrosion reconstruction companies, which has won the praise of many customers. When installing the lightning rod in the chimney, the general joint is to use the lap welding process to connect the interface, to ensure sufficient strength. According to the corresponding requirements of the newly issued national lightning rod installation, the lap length of the lightning rod interface shall not be less than 3cm, so as to ensure the stability of the whole lightning rod. With the popularization of the new chimney, this kind of replacement work will be further expanded, so it really becomes the most popular construction technology in the new chimney construction.
With the continuous progress of the times, chimney slip form gradually comes into our life, which is very common for many construction industries, so what is the construction standard about it? The ladder is placed on the cross brace for the access of construction personnel. At present, the company has more than 200 employees, 68 technicians and large-scale mechanical equipment and climbing equipment. The company has seven departments, including construction department, equipment department, technology department, human resources department, comprehensive department, finance department and legal department. It has Beijing Branch, Zhengzhou branch and Jinan Branch. It is the only company in China that integrates engineering scheme design, engineering construction and quality safety management to engage in high-altitude work. The higher the temperature is, the higher it will rise, and the gravity per unit volume will become smaller. Because the buoyancy has not changed, and the gravity of hot air has become smaller, so the smoke will float upward and rush upward. When the temperature becomes cold for a period of time, the smoke will spread horizontally. If you are in no