Electrophoresis Paint Exhaust Gas Treatment

In the process of electrophoresis, oil-soluble architectural coatings or water-based paints will cause VOC exhaust when spraying the surface layer of goods. In addition, electrophoresis drying and heating caused by the exhaust gas will be flooded with significant pungent flavour, these exhaust gases will cause harm to the surrounding environment if they are not treated in a timely manner through the exhaust gas treatment, the following with the Everest blue editorial take a look at the electrophoresis paint exhaust treatment related to the introduction.

Electrophoretic paint exhaust comes from consists of three sectors:

1. Exhaust gas caused by thermal polymerisation when the paint enters the baking pathway;

2. The effluent caused by the cleaning, preparation treatment, anodising solution, ultra-filtration membrane wheeling system, etc.. This exhaust emission is caused again during processing;

3. Hubs with H substances: benzene, esters, ketones, alcohols, amines, aldehydes, acrylates.

The main process of metal parts electrophoretic coating exhaust gas generated by the coating and curing process, the composition of the diluent in the electrophoretic coating is mainly water, alcohol ether and amines and other small amounts of organic substances, while the exhaust gas generated in the curing process is mainly non-methane total hydrocarbons. When selecting the electrophoresis exhaust gas treatment process, we, Xinlan Environmental Protection, will select a fair process according to the air volume of the exhaust gas, the composition of the exhaust gas, the concentration of the exhaust gas and the actual demand of the enterprise.

Activated carbon adsorption: This process makes use of the adsorption characteristics of activated carbon to adsorb and purify the electrophoresis exhaust gas. Activated carbon has developed microporous structure, and the adsorption and purification efficiency of electrophoresis organic waste gas can reach more than 90%.

Catalytic combustion: Catalytic combustion is a commonly used process in organic waste gas treatment. Organic waste gas is converted into harmless CO2 and H2O through low temperature combustion, and we often need to convert the large air volume and low concentration waste gas into small air volume and high concentration waste gas through activated carbon or zeolite rotor, and then send it to catalytic combustion equipment for purification.

The above are the two more common electrophoresis paint exhaust gas process, activated carbon adsorption process is suitable for the treatment of electrophoresis exhaust gas with smaller total air volume, and its preliminary investment cost and operation cost are lower. The catalytic combustion process is suitable for the treatment of electrophoresis exhaust gas with larger total air volume, firstly, the activated carbon adsorption will transform the large air volume and low concentration of exhaust gas into small air volume and high concentration of exhaust gas and then send it into the combustion chamber to be burned, and the investment of this process in the early stage and the operation cost in the later stage are higher.