Effective organic waste gas recovery device and process

Abstract

The invention provides an organic waste gas recovery device and process, and belongs to the technical field of organic waste gas treatment. The device comprises a condensation system, a membrane separation system, an adsorption system and a vacuum system, the vacuum system comprises a first vacuum pump and a second vacuum pump which operate independently, an inlet and an outlet of the first vacuum pump are connected with the membrane separation system and the condensation system respectively, and organic gas separated from the membrane separation system is circulated back to the condensation system through the first vacuum pump; an inlet and an outlet of the second vacuum pump are respectively connected with the adsorption system and the condensation system; and desorbed organic gas in the adsorption system is circulated back to the condensation system through the second vacuum pump. According to the invention, the membrane separation system and the adsorption system respectively carry out organic gas and air separation and organic matter desorption through independent vacuum pumps, so that the two systems do not interfere with each other, the intermittent vacuum operation of the adsorption system does not influence the continuous vacuum operation of the membrane separation system, and the working stability of the membrane separation system is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of organic waste gas treatment, in particular to an organic waste gas recovery device and process, and is especially suitable for waste gas discharged from petrochemical, fine chemical, spraying, and pharmaceutical and pesticide manufacturing. Background technique [0002] Volatile Organic Compounds (VOCs for short) are common pollutants, and their main sources are volatilization of organic solvents or exhaust emissions in petrochemical, pharmaceutical, spraying and other industries. Most of the above-mentioned volatile organic compounds should be recycled due to their economic value; some of them are toxic and cannot be completely removed by other methods (such as incineration, etc.) or will cause secondary pollution after treatment, which cannot meet environmental protection requirements and can only be recycled. . Common recovery methods mainly include adsorption, condensation and membrane separation. ...

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Problems solved by technology

[0006] Based on the disadvantages of unstable membrane separation effect, short life of membrane devices, low efficiency of organic waste gas treatment and complicated devices in the prior art, the present invention aims to provide a more efficient, more stable operation, longer service life, Equipped with simpler organic waste gas recovery device and process

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