Treatment method for pinacolone chloride production tail gas

Abstract

The invention discloses a treatment method for pinacolone chloride production tail gas, comprising the following steps: molecular capture: carrying out molecular capture on the tail gas by using an organic matter capture agent to obtain pinacolone chloride gas in the tail gas; falling film water absorption: absorbing hydrogen chloride gas in the tail gas by adopting a falling film water absorptionmethod to obtain a hydrogen chloride solution; alkali liquor absorption: carrying out alkali liquor absorption on the tail gas subjected to falling film water absorption, and removing unremoved hydrogen chloride gas in the tail gas; and activated carbon adsorption: physically adsorbing the tail gas by activated carbon to adsorb and remove harmful gases in the tail gas. The design is reasonable, and hydrogen chloride and organic gas are separated through molecular capture. Therefore, the difficulty of purifying the waste hydrochloric acid is greatly reduced. Resource reutilization is achievedthrough desorption regeneration, and the capture agent can be recycled, so that the waste gas treatment cost is saved. In addition, after the tail gas from pinacolone chloride production is fully absorbed and treated, the activated carbon treatment load is greatly reduced, and secondary pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to a method for treating tail gas produced by chlorinated pinatonone. Background technique [0002] Nowadays, the problem of organic matter mixed with hydrogen chloride waste gas in the production process of chlorinated pinatone has been plagued by manufacturers. After research and practical application, it is found that the effect of "falling film absorption + alkali absorption + activated carbon" is better, but it is not exhaustive, because the quality of hydrochloric acid obtained at the end of the process is often low and the content of organic matter exceeds the standard. The activated carbon originally used for adsorption needs to be replaced regularly, which increases the production capital burden of the enterprise, and the used activated carbon will cause secondary pollution, which has certain defects. Contents of the invention [0003] The purpose of the prese...

AI Technical Summary

Problems solved by technology

After research and practical application, it is found that the effect of "falling film absorption + alkali absorption + activated carbon" is better, but it is not exhaustive, because the quality of hydrochloric acid obtained at the end of the process is often low and the content of organic matter exceeds the standard

The activated carbon originally used for adsorption needs to be replaced regularly, which increases the production capital burden of the enterprise, and the used activated carbon will cause secondary pollution, which has certain defects.

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