Circulation thickening waste gas treating system

Abstract

The invention relates to a circulation thickening waste gas treating system. The circulation thickening waste gas treating system comprises a coating machine which is connected with a waste gas circulation combustion hot blast stove and an induced draft fan. The waste gas circulation combustion hot blast stove is connected with an air blower and a circulating fan. The circulating fan is connected with an air valve. The air blower is connected with a first valve. The induced draft fan is connected with a second valve. The first valve is connected with the induced draft fan. One end of the second valve is connected between the air valve and the circulating fan, and the other end of the second valve is connected between the first valve and the induced draft fan. An oxygenating valve is connected between the first valve and the air blower. Organic waste gas in the coating machine is extracted from the induced draft fan and then recycled, on the premise of safety control, stable combustion is conducted, combustion of biomass fuel can be replaced by released heat, the organic waste gas released from the coating machine can be effectively utilized, air pollution is avoided, and the purposes of energy conservation and emission reduction are actually achieved.

Description

technical field [0001] The invention relates to a waste gas treatment system, in particular to a circulation enriched waste gas treatment system. Background technique [0002] The coating machine is used for coating production, and the rolled substrate is coated with a layer of glue, paint or ink with a specific function, and then rolled after drying. It adopts a special high-speed coating head, which can effectively reduce the generation of air bubbles. The coating machine is equipped with a full-speed automatic film splicing mechanism and closed-loop automatic tension control. Volatile organic waste gas such as methanol will be produced during the coating and drying process, and the direct discharge will pollute the atmospheric environment. At present, there are several methods to deal with this kind of volatile organic waste gas, such as catalytic oxidation combustion, adsorption method, and recovery method. According to the concentration of volatile organic waste gas, i...

AI Technical Summary

Problems solved by technology

Generally, the one-time investment of catalytic oxidation combustion is high, and the operation cost of adsorption method and recovery method is high. If this part of organic waste gas is directly burned, the calorific value is far from the standard for direct combustion of organic waste gas, and fuel costs need to be increased.

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