Waste gas purifying system and purifying method adopting decentralized adsorption and centralized desorption

Abstract

The invention provides a waste gas purifying system adopting decentralized adsorption and centralized desorption. The waste gas purifying system comprises multiple adsorption devices arranged in difference spaces as well as desorption devices arranged in spaces different from those of the adsorption devices. Each adsorption device comprises a box body and an adsorption module detachably arranged in the box body and used for adsorbing waste gas. Each desorption device is provided with a hot air desorption chamber accommodating the corresponding adsorption module. The adsorption modules complete waste gas desorption treatment in the hot air desorption chambers of the desorption devices through high-temperature gas purging. The invention further provides a method for waste gas purifying through the waste gas purifying system adopting decentralized adsorption and centralized desorption. The waste gas purifying system and method are used for waste gas adsorption through the adsorption modules distributed in different spaces as well as concentrated waste gas desorption on the adsorption modules through the desorption devices, laying of pipelines in different spaces is not required, operation mounting and operation costs can be reduced, the adsorption modules subjected to desorption treatment can be recycled and are environment-friendly, and no consumable materials are used.

Description

[0001] 【Technical field】 [0002] The invention relates to a waste gas purification system and purification method, in particular to a waste gas purification system and purification method with distributed adsorption and centralized desorption. [0003] 【Background technique】 [0004] In chemical plants with multiple workshops or newly renovated houses, these places will produce gases harmful to the environment, such as volatile organic gases VOCs (Volatile Organic Compounds, referred to as volatile organic compounds), H 2 S (hydrogen sulfide), etc. [0005] For the treatment of these exhaust gases, two methods are usually used at this stage: one is the destruction method, which decomposes and transforms the discharged VOCs into other non-toxic and harmless substances through chemical reactions such as combustion. The other is to use pipelines to connect to various rooms to extract exhaust gas and concentrate it in a large exhaust gas treatment system for processing. When tre...

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Problems solved by technology

Although the device absorbs the toxic and harmful gases in the polluted air through the honeycomb adsorption substrate of the adsorption runner located in the middle unit of the box, and sends the toxic and harmful gases out of the box through the desorption of the adsorption runner after the adsorption is saturated. However, the disclosed invention patent application does not disclose the method for determining the adsorption saturation of the adsorption rotor, nor does it disclose the method for desorbing toxic and harmful gases after the adsorption rotor is saturated; and it is treated by the device The poisonous and harmful gases after that still need to be sent to the polluted air treatment device outside the box for treatment, which requires additional equipment for treatment, which not only increases energy consumption, but also leads to higher cost of polluted air treatment, and the device cannot independently complete the pollution air purification

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