Technique for manufacturing tetrabromoethane and equipment thereof

Abstract

The invention provides a process preparing the tetrabromoethane, which solves the problems that explosion may happen due to the mixture of the acetylene and the air in the current process and the tetrabromoethane has low yield coefficient and low quality. The steps are that the bromine liquid is pumped in a tail gas reactor and then pumped in a synthesis reactor; the nitrogen exhausts the air in the synthesis reactor and the tail gas reactor; the acetylene gas is access to the synthesis reactor; the acetylene reacts with the bromine to generate the tetrabromoethane; the tail gas enters the tail gas reactor and the acetylene gas which does not react in the tail gas reacts with the bromine liquid in the tail gas reactor to generate tetrabromoethane, and the tail gas exhausts via a lye absorption bucket.

Description

technical field [0001] The invention relates to a process for preparing tetrabromoethane. Background technique [0002] Tetrabromoethane is produced by reacting acetylene gas with bromine solution. The process flow of the synthesis part is as follows: the bromine liquid in the raw material tank is sucked into the tail gas tank by vacuum, and then sucked into the synthesis tank. After venting to eliminate the vacuum, slowly inject acetylene gas into the synthesis kettle to start the synthesis. The tail gas enters the tail gas tank, and the unreacted acetylene gas in the tail gas continues to react with a small amount of bromine liquid in the tail gas tank. After that, the tail gas enters the alkaline water absorption tank through the tail gas discharge pipe and then is emptied. Then, the obtained tetrabromoethane is sucked to the concentration kettle and the decolorization kettle for further concentration and decolorization treatment. [0003] The problems that the above-m...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems of the existing tetrabromoethane preparation process, which may cause explosion due to the mixture of acetylene and air, low yield and low quality of tetrabromoethane

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