Waste gas treatment system for VOCs recovery

A waste gas treatment and waste gas technology, which is applied in gas treatment, air quality improvement, dispersed particle filtration, etc., can solve problems such as environmental pollution, rising unit consumption cost of solvent production, etc., and achieve the effect of enhanced recycling

Pending Publication Date: 2020-02-07
TIANBANG NAT ENG RES CENT OF MEMBRANE TECH
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  • Abstract
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Problems solved by technology

[0003] Taking some pharmaceutical production as an example, solvents such as acetone, ethyl acetate, and acetonitrile are used in the production process. The exhaust during the production process and the exh

Method used

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  • Waste gas treatment system for VOCs recovery

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Example Embodiment

[0023] The present invention will be further explained below in conjunction with specific embodiments.

[0024] Such as figure 1 As shown, a waste gas treatment system for VOCs recovery, waste gas (1) is used as a raw material gas to pass through a supercharger 20 first, and then the gas (2) is sent to the adsorption equipment. The adsorption equipment is two sets of adsorption tanks. A 21 and adsorption tank B 22, the gas is discharged as tail gas (19) after adsorption treatment by adsorption tank A 21, and the desorption gas (3) after adsorption tank B 22 is pumped by vacuum pump 23 (4), and then passes through buffer tank 24. The material (5) is sent to the inlet of the second 25 of the supercharger, and the exhaust gas of the second 25 of the supercharger (6) is sent to the heat exchanger 26 as a heat flow. After the heat exchange, the gas (7) first passes through the liquid separation tank 27 The liquid water (15) separated by pre-cooling is discharged from the bottom, the ...

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Abstract

The invention discloses a waste gas treatment system for VOCs recovery. An adsorption technology, a membrane separation technology and a condensation combination technology are applied; a membrane separation technology is innovatively applied to treat desorbed gas of adsorption equipment; by exerting the concentration effect of membrane separation on VOCs components, not only is the recovery of VOCs by a condensation process enhanced, but also the VOCs concentration of residual gas is lower than the VOCs concentration of discharged raw material gas and is mixed with the discharged raw materialgas to enter adsorption equipment, so that the tail gas emission of the adsorption equipment more easily meets the environmental protection requirement. The adsorption equipment is double-tank type adsorbable/desorbable regeneration equipment, a vacuum desorption regeneration process replaces a traditional steam desorption regeneration process, and the problem that water-soluble VOCs are recovered into a solution and then separated is solved.

Description

technical field [0001] The invention relates to a waste gas treatment system for recovering VOCs. The application fields include chemical, pharmaceutical and other production fields, and it is especially suitable for treatment of low-concentration waste gas containing water-soluble VOCs such as acetone, ethyl acetate, methanol, and acetonitrile. Background technique [0002] In chemical, pharmaceutical and other production fields, some waste gas emitted by production contains volatile organic compounds (VOCs), which pollutes the environment. How can enterprises effectively recycle and treat VOCs in waste gas to achieve economic benefits and environmental protection emissions? It is the construction of ecological civilization. urgent demands. [0003] Taking some pharmaceutical production as an example, solvents such as acetone, ethyl acetate, and acetonitrile are used in the production process. The exhaust during the production process and the exhaust in the storage tank are...

Claims

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Application Information

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IPC IPC(8): B01D53/047B01D53/22B01D53/00B01D46/00
CPCB01D46/00B01D53/002B01D53/047B01D53/225B01D2257/708B01D2259/40086Y02A50/20
Inventor 郭文泰徐徜徉刘崇长杨文皓
Owner TIANBANG NAT ENG RES CENT OF MEMBRANE TECH
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