Single-tube multiple rotary static and mixed-piping reacotr with vinyl chlorination and method thereof

Abstract

A multi-rotary static mixed piping ethane chloride reaction producer with single tube and its reaction are disclosed. The producer consists of circulation dichloroethane and chlorine inlet pipeline, piping chlorine quick-dissolving mixer, chlorine dissolving liquid outlet pipeline, merged pipeline with chlorine dissolving liquid and ethane mixed liquid, piping ethane chlorine reactor and dichloroethane outlet pipeline. It has less investment and by-product, higher purity of product and production efficiency. It can be used for liquid phase discharge, gas phase discharge and gas-liquid mixture discharge.

Description

technical field [0001] The invention relates to a production device and a production method of chemical products, in particular to a production device and a production method for preparing ethylene dichloride by chlorination of ethylene. technical background [0002] Dichloroethane is an important raw material for the production of vinyl chloride monomer. The production of ethylene dichloride by direct contact of ethylene and chlorine in the presence of a catalyst is a relatively common technology in the world. [0003] Ethylene chlorination reactors can be divided into tower reactors, U-shaped reactors, and tubular reactors. The ethylene chlorination process can be divided into low temperature chlorination which operates at a temperature lower than the boiling point of dichloroethane and high temperature chlorination which operates at a temperature higher than the boiling point of dichloroethane. The difference is that low-temperature chlorination adopts liquid phase disc...

AI Technical Summary

Problems solved by technology

[0004] At present, a German company has developed a high-temperature direct chlorination technology using sodium ferrite tetrachloride as a catalyst. The reactor used is a bubble column reactor, which has poor mass transfer effect, low production capacity, and difficult product quality assurance. ; A Japanese company has developed a bubble column chlorination reactor with a special gas distributor and packing layer. The main defect of this technology is that the operation flexibility is small, and the gas distributor is easy to block; The technology of direct ethylene chlorination in the pipeline reactor with mixed internal components, the process flow is as follows image 3 , the reactor structure is as Figure 4 , the design idea and reactor structure of this technology are relatively novel. The published data shows that the reaction temperature is 83-90°C, which belongs to medium-temperature chlorination. The disadvantage is that the purity of the reactants is not high enough.

[0005] The current production technology and production equipment for producing ethylene dichloride by direct chlorination of ethylene are not ideal. Therefore, it is very meaningful to provide a new type of high-efficiency ethylene dichloride production equipment and production method

Images