Chlorination method capable of controlling reaction process, and special apparatus thereof

Abstract

The present invention discloses a chlorination method capable of controlling a reaction process, wherein a raw material to be chlorinated and chlorine gas enter an illumination device through a spraying mixer, the material naturally outflows the illumination device after the reaction, and the reaction tail gas passes through a demister and then enters a tail gas absorption tower. According to the present invention, the good chlorination effect is provided; and the chlorine gas and the material to be chlorinated are mixed according to the ratio through the spraying reactor, and the rapid illumination reaction is performed, such that the production capacity is strong, and the side reaction is easy to control.

Description

technical field [0001] The invention relates to a chlorination method and a special device for controlling the reaction process. Background technique [0002] Domestic chlorine production exceeds 20 million tons / a, and it has a wide range of uses. In addition to being used for the preparation of hydrogen chloride, bleaching powder, and water disinfection, it is also one of the most important uses for the preparation of chemicals, such as for the preparation of benzyl chloride, Preparation of chloroacetic acid, polychloroacetic acid, chlorinated alkanes, etc. In the current production of chlorinated chemicals, the main method is to vaporize liquid chlorine and then pass it into multi-stage series reaction tanks containing materials to be chlorinated for chlorination. A free radical initiator such as benzoyl peroxide or azobisisobutylcyanide is usually added to catalyze the reaction. It is often seen that photocatalysis is used to replace free radical initiators, and kettle-...

AI Technical Summary

Problems solved by technology

This leads to the fact that photochlorination is currently very rare in industry.