VOC (volatile organic compound) waste gas treatment device and method for pharmaceutical and chemical industry

Abstract

The invention discloses a VOC (volatile organic compound) waste gas treatment device for pharmaceutical and chemical industry. The VOC waste gas treatment device, along a waste gas treatment process, sequentially comprises an acid mist adsorption tower, an active carbon adsorption bed device, a main exhaust fan and a chimney; the active carbon adsorption bed device is further connected with a catalytic combustion device; the catalytic combustion device is connected with a desorption fan and a spraying tower; one end of the desorption fan is connected with the tail end of the catalytic combustion device; the other end of the desorption fan is divided into two branches, wherein one branch is connected with the tail end of the active carbon adsorption bed device, and the other branch is connected with a starting end of the spraying tower; the tail end of the spraying tower is connected with the main exhaust fan; and the acid mist adsorption tower, the active carbon adsorption bed device, the main exhaust fan, the catalytic combustion device, the desorption fan and the spraying tower are respectively connected with a PLC (programmable logic controller) control system. The invention further discloses a VOC waste gas treatment method for the pharmaceutical and chemical industry. The VOC waste gas treatment device and the VOC waste gas treatment method further have the characteristic of removing other impurities in addition to a function of removing VOC in the waste gas; besides, the waste gas is adsorbed by active carbon, treated by the catalytic combustion device and washed by the spraying tower, so that up-to-standard discharge is completely reached.

Description

technical field [0001] The invention belongs to the field of waste gas treatment, and specifically relates to a VOC waste gas treatment device and method generated in the production process of the pharmaceutical and chemical industry, and is especially suitable for the treatment of VOC waste gas in multifunctional workshops and VOC waste gas without recovery value. Background technique [0002] In the process of chemically synthesizing intermediates in the pharmaceutical and chemical industry, the raw materials generally undergo a series of chemical processes such as condensation, halogenation, protection, acetylation, glycosidation, deprotection, and reduction, and then the synthetic products are crystallized, centrifuged, neutralized, and distilled. , water washing, recrystallization and vacuum drying to obtain intermediates with higher purity. The diversity of products and raw materials, the difference and complexity of synthetic routes lead to the characteristics of comp...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a VOC waste gas treatment device for the pharmaceutical and chemical industry to solve the following technical problems: the treatment of VOC waste gas in the case of complex waste gas components, uncertain composition, diverse properties and changing working conditions, so as to achieve waste gas compliance Emissions, reduce investment, reduce operating costs, realize automatic control, and minimize the generation of secondary pollutants

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