What are the types of chimney anti corrosion processes?

1. Alloy steel lining:

Alloy steel is a material with good corrosion resistance, and the main types are: titanium alloy plate (TICR2) and nickel-based alloy plate (C-276).

Titanium is a very corrosion-resistant material. The chemical activity of titanium at room temperature is very small, and it can react with a few substances such as HF, but the activity of titanium increases rapidly when the temperature increases, especially at high temperatures, titanium can react violently with many substances, resulting in corrosion. C-276 is a tungsten-containing nickel-chromium-molybdenum alloy.

Its content of silicon and carbon is extremely low, and it has excellent corrosion resistance to most corrosive media in the oxidation and reduction state. In particular, it has excellent resistance to pitting, crevice and stress corrosion.

The high molybdenum and chromium content makes the alloy resistant to chloride ions, and the presence of tungsten further improves the corrosion resistance of the alloy plate.

2. Adopt high-temperature resistant flake resin coating

It is a more economical solution to use high-temperature resistant flake resin coating to make the anti-corrosion material of chimney, the principle of flake resin anti-corrosion is mainly the labyrinth effect, and the construction method of spraying or trowel coating is generally adopted, but the thickness is thinner, only about 2mm. Flake resin coating ** is more economical, the unit price is 10 20 of the alloy material, however, the anti-corrosion ability of the material is weaker than that of the alloy material, the high temperature resistance is poor, the life is short, and it needs to be checked and filled regularly.

3. Polyurea paint is used

The use of polyurea paint as an anti-corrosion material for chimneys is also a more economical solution. Generally, the construction method of spraying is adopted, with a thickness of about 1 3mm, which is formed at one time, and will not be affected by moisture or temperature changes in the air, and the material is not flammable. The construction adopts spraying method, which is simple and easy, the time is short, and the material has good adaptability to different working conditions.

4. Lined with lightweight foamed acid-resistant glass bricks

Foamed acid-resistant glass bricks are made of boric acid glass-based, which is resistant to corrosion by various concentrated acids and exhaust gas condensate including chloride, and has low thermal conductivity. The anti-corrosion lining formed by foamed acid-resistant glass bricks and the binder elastomer has the ability to resist corrosion in the case of chemical environments and temperature changes. Due to its low thermal conductivity, the original chimney lining and insulation structure are combined into one.

1. A titanium steel composite plate inner cylinder is added inside the chimney; 2. A glass fiber reinforced plastic structure inner cylinder is added inside the chimney; 3. Glass flake anticorrosive lining process; 4. Lining ceramic vitrified bricks (i.e., brick gluing process); 5. Coating anti-corrosion process, etc.

Nanjing Natural Environment Science and Technology Co., Ltd. is a heavy anti-corrosion and wastewater treatment enterprise, mainly engaged in the research and development and production of glass flake cement materials, general contracting of desulfurization and anti-corrosion, general contracting of chimney anti-corrosion, production of flue expansion joints, general contracting of desulfurization wastewater and its zero discharge system (including system design, equipment supporting, technical consulting services, commissioning, technical transformation, etc.). The "diene copolymer flexible anticorrosive cement cement" independently developed by Nanjing Natural Environment Science and Technology Co., Ltd. can be smearable and masonry, adding a new material and new solution to the field of heavy anti-corrosion.

First, the chimney inner wall maintenance OM coating construction process.

1. Paste white lining alloy sheet. The metal alloy sheet with good impermeability, strong integrity, light weight and acid corrosion resistance is used as the inner lining, such as titanium plate (TICR2), nickel-based composite metal plate (C-276, C22) or iron-nickel-based corrosion-resistant alloy plate (Al-6XN), etc. The titanium steel composite plate material is an ideal anti-corrosion treatment scheme for the inner wall of the chimney under the condition of wet desulfurization of flue gas and no GGH.

2. Paste with corrosion-resistant lightweight thermal insulation products. Such as foamed acid-resistant glass brick lining. The foamed acid-resistant glass bricks are directly pasted on the inner surface of the steel chimney by a special adhesive material, and the joints between the glass bricks are hooked by the adhesive material, which blocks the corrosion of the inner barrel structure of the chimney by the flue gas.

It has antiseptic ability in the case of large changes in chemical environment and temperature. Under the condition of wet desulfurization of flue gas without GGH, it is an ideal solution to carry out anti-corrosion of the inner wall of the old chimney of the operating power plant.

3. Adopt anti-corrosion coating such as glass flakes. It is widely used in FGD absorption towers, flues and other desulfurization equipment.

High-altitude anti-corrosion company.

Answer the question of chimney anti-corrosion.

The anti-corrosion of the inner wall of the chimney is a special type of work, which should be professionally trained, and an operation certificate will be issued after passing the examination. All anti-corrosion construction and technical personnel on the inner wall of the chimney must first carry out safety knowledge popularization education, implement the spirit of the relevant safety production documents, clarify the rules and regulations related to safety, and arouse the high attention of employees to safety production.

2. When the anti-corrosion construction personnel on the inner wall of the chimney enter the construction site, they must wear safety helmets, wear safety belts for high-altitude work, and it is strictly forbidden to throw objects at high altitudes. Feeding platform, balcony mouth, stair edge, pipe shaft, elevator opening, construction opening, to set up safety fence railings and eye-catching signs, elevator shaft and construction opening to add safety nets.

3. In humid environments such as flue mouths, chimney inner wall anticorrosive material passages and dark places at the main entrances and exits, low socks pressure lighting fixtures should be set up. The use of anti-corrosion machinery and equipment on the inner wall of the chimney should be fixed to determine the person, machine and position, and clarify the responsibility. When using electricity, one machine, one gate, and one insurance should be achieved, and the mega dispersion electric box should have door locks and rainproof measures.

4. The temporary facilities, dormitories, canteens, offices and warehouses on the inner wall of the chimney should be kept unobstructed according to the fire protection requirements, and faucets should be set up and fire extinguishers arranged. In the building, 50 main risers are installed, each floor is left with openings, and water is supplied through high-pressure multi-water pumps to meet the fire protection needs of fire fighting and anti-corrosion construction on the inner wall of the chimney.

5. Vertical transportation machinery, tower cranes, high-speed high-rise derricks, construction elevators, etc., should strictly abide by the relevant safety operation procedures in use, and the operators should be certified to work, clarify responsibilities, unify command, cooperate closely, and obey scheduling. In case of strong winds above level 6, excessive noise, foggy weather or insufficient lighting, and the command signal cannot be heard or seen clearly, the operation should be resolutely stopped, and the equipment and facilities for anti-corrosion on the inner wall of the chimney should not be blindly operated.

The anti-corrosion of chimneys requires the construction of mazes, designers, anti-corrosion workers, painters, and so on.

What types of construction work are needed for chimney anti-corrosion, one is the exterior wall, the second is the need for some installers and the like, as well as scaffolding workers.

There are many construction processes and complex types of work, such as water, electricity, heating, sanitation, wood, mud, glass, paint, metal, curtain wall, etc.

What facilities are under construction? I feel that this must have a certain amount of anti-corrosion paint, so that the brush will feel good.

What construction measures are needed for anti-corrosion, it must be Chongli to give him some serious fire prevention and anti-corrosion measures, do it inside, and make a circle in the chimney of the chimney. Whoop.

You need someone who understands chemistry. There is also a need for people who know how to work with waterproofing. 、

It is necessary to install iron pipes and steel wires.

The antiseptic ones need some antiseptics, some types of work, and this is a pair.

The measures and types of work required for chimney corrosion protection are completed with specific materials.

Including the fact that we still need a lot of his construction, his type of work, and the construction of the station, the princess can better help everyone.

This requires a lot of professionals to do, such as painters, fire protection kits, etc., and the direct people are very professional.

Chimney anticorrosion requires a lot of construction work.

It's a pleasure to meet you, and I think he's very tasty.

The anti-corrosion of the chimney, that is, the boiler exhaust gas is rich in substances such as SPC, because the exhaust gas temperature is low and easy to mix with water vapor, rainwater and other acidic substances to corrode the chimney, I personally think that the chimney anti-corrosion should be waterproof first, the top of the chimney should be made a rainproof cap, the chimney and the roof should be waterproof, to prevent rainwater from going down the chimney to the root of the chimney, and the chimney air leakage should be blocked in time to prevent cold air from entering the chimney and the flue gas contact to cause corrosion, and clean it regularly.

Professional chimney anti-corrosion company, chimney anti-corrosion expert Wang Zhaojun.

The main thing is the anti-corrosion of the inner wall of the chimney, hehe,

Hebei Xinda anticorrosive materials.