Technology for preparing tetrafluoroethylene through dilution and pyrolysis of difluorochloromethane and water vapor

A difluorochloromethane, dilute cracking technology, applied in the preparation of halogenated hydrocarbons, chemical instruments and methods, organic chemistry, etc., can solve problems such as pollution, and achieve the effect of solving environmental pollution problems, simple preparation, and high purity

Inactive Publication Date: 2011-02-16
天津东方宜信物流有限公司
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  • Abstract
  • Description
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Problems solved by technology

This technology not only has reasonable process and simple preparation, but also produces tetrafluoroethylene with high purity and solves the problem of environmental pollution

Method used

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  • Technology for preparing tetrafluoroethylene through dilution and pyrolysis of difluorochloromethane and water vapor
  • Technology for preparing tetrafluoroethylene through dilution and pyrolysis of difluorochloromethane and water vapor

Examples

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Embodiment Construction

[0010] refer to figure 1 , Difluorochloromethane preheater 1, steam preheater 2, reactor 3, quench cooler 4, graphite condenser 5, concentrated sulfuric acid dryer 6, left compressor 7, left cooler 16, middle compressor 8. Intermediate cooler 17, right compressor 9, right cooler 18, deaerator 10, left condenser 19, storage tank 11, dehydrogenation tower 12, rectification tower 13, right condenser 20, monomer storage tank 14. The difluorochloromethane recovery tower 15 is sequentially connected through the connecting pipeline 21, and is composed of an integrated assembly. When using the technology of the present invention, according to the operating procedures, chlorodifluoromethane is added to the chlorodifluoromethane preheater 1 of the technology of the present invention, and water vapor is added to the steam preheater 2 of the technology of the present invention. Heating to a certain temperature, the mixture of difluorochloromethane and water vapor enters the reactor 3 for...

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Abstract

The invention discloses technology for preparing tetrafluoroethylene through dilution and pyrolysis of difluorochloromethane and water vapor, which is characterized in that a difluorochloromethane preheater, a water vapor preheater, a reactor, a quencher, a graphite condenser, a concentrated sulfuric acid dryer, a left compressor, a left cooler, a middle compressor, a middle cooler, a right compressor, a right cooler, a deaerator, a left condenser, a reservoir, a dehydrogenation tower, a rectification tower, a right condenser, a monomer storage tank and a difluorochloromethane recovery tower are connected in sequence by connecting lines and are assembled as a whole. The technology is reasonable in process and simple in preparation, ensures the produced tetrafluoroethylene to have high purity and solves the problem of environmental pollution, thus being ideal.

Description

Technical field [0001] The invention relates to a synthesis and preparation technology of chemical products, in particular to a technology for preparing tetrafluoroethylene by dilution and cracking of difluorochloromethane and water vapor, which is suitable for chemical synthesis and preparation of tetrafluoroethylene. Background technique [0002] At present, the production technology of tetrafluoroethylene is still under research, and it is not yet possible to produce pure tetrafluoroethylene. Contents of the invention [0003] The problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a technology for preparing tetrafluoroethylene by difluorochloromethane and steam dilution cracking. This technology not only has reasonable process and simple preparation, but also produces tetrafluoroethylene with high purity and solves the problem of environmental pollution. [0004] The technical scheme adopted in the present inventi...

Claims

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Application Information

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IPC IPC(8): C07C21/185C07C17/269
Inventor 李中元
Owner 天津东方宜信物流有限公司
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