Continuous preparation method of chlorosulfonate

Abstract

The invention provides a continuous preparation method of chlorosulfonate, wherein the preparation method comprises the following steps: carrying out reaction of chloride salt and liquid sulfur trioxide in a gas-solid continuous reactor, and making the mixed material continuously pushed forward by a motor, a speed reducer and a differential speed machine. A continuous liquid-solid reaction deviceis used for continuous production of sodium chlorosulfonate; the solid material sodium chloride makes full contact with liquid sulfur trioxide under the mixing and shearing action of a stirrer, the two materials are subjected to reaction by controlling the heating temperature, the material is continuously pushed forward during the reaction, and the reaction time is controlled by the material pushing speed in the device, so as to ensure that the two materials are subjected to total overall reaction to produce sodium chlorosulfonate when the material is pushed out from the other end of the device.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a continuous preparation method of chlorosulfonate. Background technique [0002] In the traditional process of preparing chlorosulfonate by reaction of chloride salt and sulfur trioxide, the production equipment adopts a mixer, so it can only be produced intermittently, with long production cycle, low production capacity, complicated operation, large workload, and equipment footprint It consumes a lot of energy, and it is easy to produce irritating gas when it comes into contact with air during the material circulation process. And because the reaction needs to be carried out at high temperature, the materials need to be additionally heated to initiate the reaction in the front stage of each batch of reaction, and the materials need to be cooled after the reaction to keep them within a certain temperature range, which results in extremely high energy consumption. Big ...

AI Technical Summary

Problems solved by technology

[0002] In the traditional process of preparing chlorosulfonate by reaction of chloride salt and sulfur trioxide, the production equipment adopts a mixer, so it can only be produced intermittently, with long production cycle, low production capacity, complicated operation, large workload, and equipment footprint High energy consumption, and easy contact with air during material flow to generate irritating gas

And because the reaction needs to be carried out at high temperature, the materials need to be additionally heated to initiate the reaction in the front stage of each batch of reaction, and the materials need to be cooled after the reaction to keep them within a certain temperature range, which results in extremely high energy consumption. big waste

In addition, the seal of the equipment is poor, and the powder material is easy to leak out through the shaft seal, and a material leakage accident will damage the equipment and pollute the environment.

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