Preparation device of octafluorocyclopentene and use method thereof

By designing an octafluorocyclopentene preparation device that includes a pyrolysis furnace, filter, water washing and alkali washing units, and using non-highly toxic raw material, perfluorocyclohexene, high-purity octafluorocyclopentene was prepared. This solved the problems of insufficient raw material supply and numerous hazardous chemical operations, and reduced process risks and equipment requirements.

CN121944918APending Publication Date: 2026-05-01ZHEJIANG RUIHENG ELECTRONIC MATERIALS CO LTD
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Patent Information

Application Number
CN202511797224.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-02
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing methods for synthesizing octafluorocyclopentene suffer from insufficient raw material supply, high prices, numerous hazardous chemical operations, and many byproduct impurities, making industrial-scale production difficult.

Method used

Design a preparation apparatus including a pyrolysis furnace, filter, condenser, water washing device, alkali washing device, polymerization inhibition device, water removal device, and cryogenic device. Use non-highly toxic raw material, perfluorocyclohexene, as the raw material, and obtain high-purity octafluorocyclopentene through composite catalyst pyrolysis, multi-stage heat exchange, water washing, alkali washing, and cryogenic treatment.

Benefits of technology

The preparation of high-purity octafluorocyclopentene has been achieved, reducing process risks and equipment requirements, minimizing toxicity to operators, and lowering industrialization investment costs.

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Abstract

The invention relates to an octafluorocyclopentene preparation device and a use method thereof.The device comprises a pyrolyzing furnace, a filter, a condenser, a water washing device, an alkali washing device, a water removing device and a deep cooling device which are connected through pipelines, a pyrolyzing pipe is arranged in the pyrolyzing furnace, a composite catalyst is placed in the pyrolyzing pipe, and the filter is arranged in the filter; the front end of the distillation tower is connected with a raw material gas tank and a purging gas tank through a three-way pipe, the rear part of the distillation tower is sequentially connected to a filter, a condenser, a water washing device, an alkali washing device, a polymerization inhibition device, a water removal device and a cryogenic device, and finally collected condensate is distilled. The device is simple and reasonable in overall structure, simple in preparation process, efficient and safe.
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