Continuous preparation method of chlorosulfonate

A technology for chlorosulfonate and chloride salt, which is applied in the field of continuous preparation of chlorosulfonate, can solve the problems of waste of energy consumption, large area of ​​equipment, long production cycle, etc., so as to avoid the possibility of material leakage , Improve the production site environment, the effect of small footprint

Inactive Publication Date: 2018-12-07
SHANDONG RUNBO BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Continuous preparation method of chlorosulfonate

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Experimental program
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Effect test

Embodiment 1

[0029] Sodium chloride is stably and continuously input from the equipment inlet at a speed of 10Kg / min, sulfur trioxide is sprayed out through the dripping port on the equipment at a speed of 13.68Kg / min, the cooling water flow rate is 8m3 / h, and the cooling water temperature is 50°C, keep the reaction stable at 110-130°C, the frequency of the auger is 35HZ, and the reaction time is 15min to obtain sodium chlorosulfonate with a purity of 99.7% and a yield of 97.64%.

Embodiment 2

[0031] Sodium chloride is stably and continuously input from the equipment inlet at a rate of 15Kg / min, sulfur trioxide is sprayed out through the dripping port on the equipment at a rate of 20.51Kg / min, the cooling water flow rate is 7m3 / h, and the cooling water temperature is 45°C, keep the reaction stable at 110-130°C, the frequency of the auger is 30HZ, and the reaction time is 18min to obtain sodium chlorosulfonate with a purity of 99.5% and a yield of 98.37%.

Embodiment 3

[0033] Potassium chloride is stably and continuously input from the equipment inlet at a rate of 15Kg / min, sulfur trioxide is sprayed out at a rate of 20.51Kg / min through the dripping port on the equipment, the cooling water flow rate is 7m3 / h, and the cooling water temperature is 47°C, keep the reaction stable at 110-130°C, the frequency of the auger is 32HZ, and the reaction time is 17min to obtain potassium chlorosulfonate with a purity of 99.8% and a yield of 98.12%.

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/46C01D13/00
CPCC01B17/46C01B17/466C01D13/00C01P2006/80
Inventor 孙国庆侯永生许立卫李盼盼陈帅谭建国胡义山刘超梁倩杨海龙
Owner SHANDONG RUNBO BIOTECH CO LTD
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