Spray painted dust removal framework

The sprayed dust removal skeleton has the property of being treated with electrostatic spraying on the surface, with obvious temperature resistance advantages. It is generally used for temperatures below 150 ℃ and can be combined with high-temperature filter bags for dust control in industries such as coal-fired power generation, metallurgy, and non-ferrous metals. The commonly used dust removal skeleton adopts cold galvanizing for surface treatment, with a smooth appearance, no zinc nodules or burrs, and a silver white or colored color. It can be used in any temperature environment below 300 ℃.

Spray coating dust removal skeleton is usually treated with spray coating on the dust removal skeleton. Although the price is higher than that of ordinary skeletons, spray coating dust removal skeleton not only has the advantages of galvanized skeleton, but also can achieve the functions of not damaging the filter bag and corrosion resistance.

The principle of spray coating dust removal skeleton is that the powder coating is fed into the spray gun by the powder supply system through compressed air gas. A high-voltage electrostatic generator is added at the front end of the spray gun to generate a high voltage. Due to corona discharge, dense charges are generated near it. When the powder is sprayed from the nozzle, charged coating particles are formed, which are attracted to the workpiece with opposite properties by the electrostatic force. As the amount of powder sprayed increases, the charge accumulates more. When the thickness is reached, due to the electrostatic repulsion effect, it no longer absorbs, so that the entire workpiece obtains a thick powder coating. Then, after high temperature, the powder melts, flattens, and solidifies, forming a hard coating on the surface of the workpiece. The sprayed dust removal skeleton coating has excellent aesthetic quality, strong adhesion and mechanical strength, and corrosion resistance. Spray coating dust removal skeleton is currently a widely used type of dust removal skeleton, mainly used in industries such as coal-fired power plants, steel metallurgy, and waste incineration.

Factors affecting the spray dust removal skeleton:

1. The influence of the size of the dust removal skeleton: Among the geometric dimensions of the dust removal skeleton, the diameter of the dust removal skeleton, gas, and the shape and size of the exhaust pipe are important influencing factors.

2. The influence of gas parameters on the performance of dust removal skeleton includes the influence of gas flow rate, gas dust concentration, gas moisture content, gas density, viscosity, pressure, temperature, etc.

3. The influence of the physical properties of dust on the dust removal skeleton.

4. The influence of the roughness of the inner wall of the dust removal skeleton: Dust particles concentrated near the wall surface will cause swirling due to the rough surface, causing some dust particles to be thrown into the rising airflow and enter the exhaust pipe, reducing the dust removal efficiency.

Comparison between spray painted skeleton and traditional galvanized skeleton process:

1. Galvanized corrosion filter bags, while spray coating does not corrode filter bags, extending the service life of filter bags.

2. The coating has excellent appearance quality, strong adhesion and mechanical strength.

3. The coating has stable performance and much higher temperature resistance.