Method and device for treating volatile organic chemicals (VOCs) gas of medium or low concentration

A treatment method and gas treatment technology, which are applied in the field of medium and low concentration VOCs gas treatment, can solve the problems of unsatisfactory treatment effect, high cost, and reduced operation and maintenance cost.

Pending Publication Date: 2018-01-12
彩融电光源技术(上海)有限公司
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Problems solved by technology

[0010] The purpose of the present invention is to provide a treatment method and device for medium and low concentration VOCs gas, which overcomes the problems of unsatisfactory treatment effect and high cost of medium and low concentration VOCs gas in the prior art. The present invention can make adsorption and desorptio

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  • Method and device for treating volatile organic chemicals (VOCs) gas of medium or low concentration
  • Method and device for treating volatile organic chemicals (VOCs) gas of medium or low concentration

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[0059] The present invention will be further described below in conjunction with specific examples.

[0060] see figure 2 , a kind of medium and low concentration VOCs gas processing device of the present invention, comprises: box body 1, its two ends are respectively provided with air inlet 101 and exhaust port 102; A filter device 2 is provided, which is a filter screen or a filter membrane, and is located at the air inlet 101 in the box body 1; the first and second processing units 3, 3', the first processing unit 3 is illuminated by a molecular sieve module 31 and UVC module 32; the UVC illumination module 32 is composed of several low-pressure UVC lamps, which are respectively arranged on both sides of the molecular sieve module 31; the second processing unit 3' is composed of a molecular sieve module 31' and UVC illumination modules 32', 33' to dissipate heat The device 4 is arranged between the first and second processing units 3 and 3'; the ozone filter device 5 is a...

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Abstract

The invention relates to a method and a device for treating volatile organic chemicals (VOCs) gas of medium or low concentration. The method comprises the steps of filtering the VOCs gas of medium orlow concentration for removing particulate matters, then decomposing and oxidizing the VOCs gas by means of UVC photolysis, UVC photoexcited oxidation, ozone oxidation and TiO2 photocatalytic oxidation as well as molecular sieve adsorption and desorption so as to enable the VOCs gas to be converted into CO2 and water, filtering the obtained gas by using an ozone filtering device, and discharging the gas when the gas is proved to be qualified by means of detection. After the method and the device are adopted, on-line VOCs adsorption and desorption can be realized by means of a synergistic effect of a molecular sieve module and UVC light irradiation; in a treatment process, chemical additives and precious metal catalysts are not needed to be used, so that secondary pollutants are not produced, the efficiency is greatly increased, and a good treatment efficiency is further realized. After being treated, most of the VOCs gas is decomposed and oxidized, and extra energy consumption is not caused; furthermore, the operation and maintenance costs of the device are reduced.

Description

technical field [0001] The invention belongs to the field of organic waste gas treatment, and in particular relates to a treatment method and device for medium and low concentration VOCs gas. Background technique [0002] VOCs refer to various volatile organic compounds with a boiling point of 50°C to 260°C at room temperature. There can be millions of VOCs in a broad sense, and they are one of the main pollutants in the atmosphere. According to its chemical structure, it can be divided into the following categories: hydrocarbons (alkanes, olefins and aromatics), esters, aldehydes, ketones, alcohols, phenols, amines, nitriles (cyanides), and organic halogens Derivatives etc. [0003] Most volatile organic compounds are toxic and have the characteristics of wide pollution, toxicity, odor, large emission and low concentration. Their good treatment is a difficult problem in the environmental protection industry. Due to the different molecular structures of various VOCs, diffe...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/86B01D53/44B01D46/00B01D46/54
CPCY02A50/20
Inventor 程星肖勃雷徐阳
Owner 彩融电光源技术(上海)有限公司
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