he basic principle of catalytic combustion spray paint room waste gas treatment is: activated carbon adsorption, desorption + catalytic combustion is a method that effectively combines the adsorption concentration unit and the thermal oxidation unit. It is mainly suitable for useful waste gas with low concentration and is not suitable for direct combustion or catalytic combustion and adsorption recovery. Especially for large air volume treatment occasions, satisfactory economic and social effects can be obtained. After adsorption purification and desorption, it is converted into useful waste gas with small air volume and good concentration, which is thermally oxidized and the heat released by the combustion of useful substances is effectively utilized.

Catalytic combustion spray paint room waste gas treatment is widely used in the spraying of automobiles, shipbuilding, motorcycles, furniture, household appliances, pianos, steel structure production plants and other industries, and the purification of useful waste gas in painting workshops or production lines. It can also be used in conjunction with production lines such as shoemaking viscose, tin printing cans, chemical plastics, printing inks, cables, enameled wires, etc. It is suitable for treating useful waste gas at room temperature, large air volume, medium and low concentration, and volatile. The types of useful solvents that can be treated include benzene, esters, aldehydes, ethers, alkanes and their mixtures. It is suitable for the useful waste gas volatilized or leaked from the coating, printing, leather, plastic and chemical workshops with low concentration and large air volume, which is not suitable for direct combustion or catalytic combustion and adsorption recovery treatment.

Equipment composition diagram:

Process technology features:

1. Good adsorption purification efficiency, stable treatment effect, and ensure that the waste gas meets the emission standards.
2. It has manual and automatic desorption functions, and uses precious metal catalysts to convert the material through catalytic combustion reaction. The catalytic efficiency is good and the performance is stable.
3. It adopts PLC control and is equipped with an operable touch screen, which is easy to use and simple to maintain and manage.
4. It has multiple protection measures, the main reactor is equipped with an explosion relief device, multi-point temperature detection is set, and it has fault alarm and emergency disposal capabilities.

Scope of application:

The solvents that can be treated by the catalytic combustion activated carbon adsorption and desorption process include benzene, ketones, lipids, alcohols, aldehydes, ethers, alkanes and their mixtures.
It can be widely used in the exhaust gas purification of the painting and coating workshops of automobile, shipbuilding, motorcycle, bicycle, household appliances and container production plants. It can also be used with the supporting equipment of the assembly lines such as shoemaking viscose, tinplate can making, chemical plastics, printing ink, cable, enameled wire, etc.

Working principle:

The exhaust gas first passes through dry filtration to intercept and remove the particulate pollutants in the exhaust gas, and then enters the adsorption bed for adsorption. The honeycomb activated carbon with a large specific surface area is used to adsorb the solvent on the surface of the activated carbon. The treated clean gas is discharged at high altitude through the fan and chimney.

After a period of adsorption, the activated carbon reaches saturation, and the system’s desorption-catalytic combustion process is started. The solvent that has been adsorbed on the surface of the activated carbon is desorbed by the hot air flow, and converted into substances such as CO2 and water vapor through the catalytic combustion reaction, and heat is released. The heat generated by the reaction is partially reused in the desorption hot air flow through the heat exchange. When the desorption reaches a certain degree, the heat release and the desorption heat are balanced, and the system completes the desorption process without external heat.

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Catalytic combustion spray paint room waste gas treatment 1