VOCs absorption device and method

Abstract

The invention discloses a VOCs absorption device and method. The device comprises at least two absorption columns, an absorbent filled in the absorption columns, a heating device, a condenser, an air pump and an organic solution storage box; the inlet and the outlet of the absorption columns are sequentially connected through pipelines to form a liquid flow channel; the air pump, the absorption column outlets, the absorption column inlets and the condenser are sequentially connected through pipelines to form an airflow channel, and the condenser is connected with the organic solution storage box; and the heating device is arranged on the absorption columns in a sleeving manner and is used for heating the absorption columns. By arranging at least two absorption columns, adsorption and desorption are completed in the same equipment in a mode of adsorbing VOCs in the forward direction and volatilizing the adsorbed VOCs in the reverse direction, simplification of a treatment device is achieved, and multiple treatment modes such as parallel treatment and alternate continuous treatment can be achieved, so the problems that an existing VOCs emission control system is huge and complex, multiple devices are connected in series, and the processing capacity is low are solved.

Description

technical field [0001] The invention belongs to the technical field of organic waste liquid treatment, and more specifically relates to a VOCs absorption device and absorption method. Background technique [0002] With the development of my country's economic construction, various organic solvents have been widely used in chemical production, food, processing, mining metallurgy, drug synthesis and many other fields. The emission of VOCs is also increasing year by year, and various environmental problems brought about by it have attracted worldwide attention. There are many kinds of VOCs, most of which are toxic, irritating, and even carcinogenic. They have many direct harms to the human body. They react photochemically with nitrogen oxides to form more harmful photochemical smog, causing secondary pollution and serious pollute the ambient air. [0003] Based on the background requirements of the new situation, the society has higher and higher requirements for industrial p...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a VOCs absorption device and absorption method, the purpose of which is to adopt the method of forward adsorption of VOCs and reverse volatilization of the adsorbed VOCs by setting at least two absorption columns, Adsorption and desorption are completed in the same equipment, which simplifies the processing device, and can realize multiple processing methods such as parallel processing, alternate continuous processing, etc., thereby solving the current VOCs emission control system. Huge and complex, multiple devices connected in series, processing low technical issues

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