Waste gas treatment device in coal tar processing process

Abstract

The invention relates to a waste gas treatment device in a coal tar processing process. The waste gas treatment device comprises an absorption tower body, the bottom end of the absorption tower body is connected with a liquid collection box, the waste gas treatment device also comprises a plurality of collection covers and an absorption liquid circulation mechanism. The collection covers are arranged on the left side of the absorption tower body. Each collection cover comprises an outer cover, an inner cover and a separation plate. The absorption liquid circulation mechanism is arranged at the lower part of the absorption tower body and comprises a liquid separation part and a circulation part; the liquid separation part comprises a baffle plate, a liquid guide plate, a liquid storage ring and a liquid separation tank, and the circulation part comprises circulation pipes and chemical pumps. The circulation pipes comprise a first circulation pipe, a second circulation pipe, a third circulation pipe and a fourth circulation pipe, and the chemical pumps comprise a first chemical pump and a second chemical pump. The waste gas in the coal tar processing process can be comprehensively treated by using one set of equipment, the number of treatment equipment is reduced, the occupied area is reduced, and the cost and capital investment are reduced.

Description

technical field [0001] The invention relates to the technical field of absorption towers, in particular to a waste gas treatment device in the process of coal tar processing. Background technique [0002] Coal tar is an organic mixture mainly composed of polycyclic and heterocyclic compounds. Coal tar processing and refining is an important branch of modern coal chemical industry. Due to the disorderly development of the coking industry in recent years, it has brought huge pressure on environmental protection and energy. Due to the support of national industrial policies and the increase in coal tar production, coal tar chemical industry has developed rapidly in recent years. In the process of coal tar chemical industry The impact of the waste gas produced on the environment has also attracted more and more attention. [0003] Coal tar waste gas generation points mainly include the release pipe of the oil tank, the discharge pipe of the condensation cooling equipment, the a...

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Problems solved by technology

[0005] In order to solve the waste gas in the existing coal tar processing process, multiple absorption towers need to use different absorption liquids to absorb different waste gases separately, which not only has low absorption efficiency, but also has many equipment, high cost, large area occupation, and waste of funds. The invention provides a waste gas treatment device in the process of coal tar processing. The purpose is to use a set of equipment to comprehensively treat the waste gas in the process of coal tar processing, reduce the number of processing equipment, reduce the occupied area, and reduce the cost and capital investment.

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