Dechloridation device and process in chlorinated paraffin production process

Abstract

The invention relates to a dechloridation device and process in a chlorinated paraffin production process. The dechloridation process comprises the following steps: connecting a tail gas discharge pipe of a chlorination reaction kettle with a dechloridation kettle; introducing the chlorination tail gas produced by the chlorination reaction into hot liquid wax to perform a dechloridation reaction;eliminating the gas after the dechloridation reaction from a hydrogen chloride outlet; and eliminating the generated liquid material containing the liquid wax and using the eliminated liquid materialcontaining the liquid wax as a raw material for continuous chlorination reactions. The process provided by the invention is a gas-gas two-phase material separation technology, can improve the chlorine utilization rate and the hydrogen chloride purity and remove impurities in the liquid wax and improve the product quality of chlorinated paraffin, and has tremendous economical benefits and practicability. By adopting the technology, the chlorine content in hydrogen chloride is less than or equal to 0.1%, the hydrogen chloride purity is improved to satisfy the use of a chlorosulfonic acid device; and meanwhile, the quality of liquid wax is improved, and the improvement of comprehensive quality of the product is facilitated.

Description

Technical field: [0001] The invention relates to a device and a process for removing chlorine in hydrogen chloride gas during the production process of chlorinated paraffin. Background technique: [0002] During the chlorination reaction of chlorinated paraffin, some chlorine gas is excessive. First, it causes a large consumption of chlorine gas. Second, the reaction chlorination tail gas needs to be absorbed by liquid caustic soda, which increases the production cost. Third, it pollutes the surrounding environment. Hydrogen chloride can be sent to chlorine gas. The sulfonic acid plant produces chlorosulfonic acid, but it has high requirements on the purity and chlorine content of chlorine gas. The hydrogen chloride produced by the conventional chlorinated paraffin production method cannot meet the production of chlorosulfonic acid. Invention content: [0003] The purpose of the present invention is to overcome above-mentioned technical deficiency, and provide a kind of li...

AI Technical Summary

Problems solved by technology

[0002] During the chlorination reaction of chlorinated paraffin, some chlorine gas is excessive. First, it causes a large consumption of chlorine gas. Second, the reaction chlorination tail gas needs to be absorbed by liquid caustic soda, which increases the production cost. Third, it pollutes the surrounding environment. Hydrogen chloride can be sent to chlorine gas. The sulfonic acid plant produces chlorosulfonic acid, but it has high requirements on the purity and chlorine content of chlorine gas. The hydrogen chloride produced by the conventional chlorinated paraffin production method cannot meet the production of chlorosulfonic acid.

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