Production method for co-production of chloroethylene carbonate and chloroethane
By reacting hydrogen chloride with ethanol under the action of a catalyst to form ethane chloride, and purifying it using the pressure swing adsorption separation process, the problem of hydrogen chloride by-production in the production of chlorinated vinyl carbonate is solved, and the resource utilization and economic benefits are improved.
CN119912423APending Publication Date: 2025-05-02江苏瀚康电子材料有限公司
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Patent Information
- Application Number
- CN202510116331.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-05-02
AI Technical Summary
Technical Problem
The hydrogen chloride produced by-products in the existing chlorinated vinyl carbonate production methods is difficult to effectively utilize, and there are problems of high environmental protection pressure and high treatment costs.
Method used
By reacting hydrogen chloride with ethanol under the action of a catalyst, ethane chloride is generated, and ethyl chloride is purified by using a pressure swing adsorption separation process to achieve closed-circulation cycle of chlorine and zero emissions in the reaction process.
Benefits of technology
It effectively reduces the cost of exhaust gas treatment, realizes the resource utilization of waste gas, has significant economic benefits, and improves the purity of ethane chloride.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of organic synthesis, in particular to a production method for co-production of chloroethylene carbonate and chloroethane, which comprises the following steps: chlorine and ethylene carbonate are used as raw materials to prepare a chloroethylene carbonate crude product under the illumination condition, and hydrogen chloride gas is produced as a byproduct; purifying the chloroethylene carbonate crude product to obtain a chloroethylene carbonate finished product; the method comprises the following steps: mixing hydrogen chloride gas with ethanol gas, and catalyzing under the action of a catalyst to generate crude chloroethane synthesis gas; and carrying out pressure swing adsorption separation on the chloroethane crude product synthesis gas, compressing the chloroethane gas to obtain a chloroethane liquid finished product, and recycling the surplus ethanol to the mixing process. According to the production method for co-production of chloroethylene carbonate and chloroethane, the byproduct hydrogen chloride in preparation of chloroethylene carbonate is used as a raw material for synthesis of chloroethane, so that resource utilization of waste gas is effectively realized, the treatment cost of tail gas is greatly reduced, and remarkable economic benefits are achieved.
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