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A device, process and application of tetrafluoroethylene co-production of hexafluoropropylene

A technology of tetrafluoroethylene and hexafluoropropylene, which is applied in the field of tetrafluoroethylene preparation, can solve problems such as limited economic benefits, and achieve the effects of reducing production pollution, improving utilization rate, and solving environmental protection pressures

Active Publication Date: 2022-05-27
聊城氟尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventor believes that: the technical idea in this patent mainly reflects how to recover the by-product octafluorocyclobutane in the tetrafluoroethylene raffinate, the economic benefits it can produce are limited, and there is room for further improvement

Method used

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  • A device, process and application of tetrafluoroethylene co-production of hexafluoropropylene
  • A device, process and application of tetrafluoroethylene co-production of hexafluoropropylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A device for tetrafluoroethylene co-production of hexafluoropropylene, reference figure 1 , including: tetrafluoroethylene reactor 1, tetrafluoroethylene separation device 2, octafluorocyclobutane recovery device 3, crude hexafluoropropylene storage device 4, light removal tower 5, rectification tower 6, hexafluoropropylene finished product condenser 7. Hexafluoropropylene product storage device 8, light component compression device 9 and incineration device 10, in which:

[0039] The tetrafluoroethylene reactor 1, the tetrafluoroethylene separation unit 2, and the octafluorocyclobutane recovery unit 3 are sequentially connected, and the octafluorocyclobutane recovery unit 3 is connected to the tetrafluoroethylene reactor 1; the crude six After the fluoropropylene storage device 4 is connected with the tetrafluoroethylene separation device 2, it is then sequentially connected with the light removal tower 5, the rectification tower 6, the hexafluoropropylene finished produ...

Embodiment 2

[0041] A device for tetrafluoroethylene co-production of hexafluoropropylene, the same as embodiment 1, the difference is: reference figure 2 , the rectification column 6 is made up of a tower top condenser 11, a tower body 12, a tower body filler 13, a tower still 14 and a tower still reboiler 15, and the tower top condenser 11 is arranged on the top of the tower body 12, The tower body filler 13 is arranged in the tower body 12, the tower kettle 14 is arranged at the lower part of the tower body 12, and the tower kettle reboiler 15 is arranged on the outer surface of the tower kettle 14; the hexafluoropropylene finished product is condensed The device 7 communicates with the top condenser 11, and the incinerator 10 communicates with the bottom of the tower kettle 14.

Embodiment 3

[0043] A device for the co-production of tetrafluoroethylene with hexafluoropropylene, the same as in Example 2, the difference is that the tower body filler 13 is a Z-shaped wire mesh filler, and the Z-shaped wire mesh filler is made of 316L stainless steel, and the 316L material is resistant to The corrosion resistance is stronger than 304L, and it is also more corrosion-resistant at high temperature; the wire mesh packing enhances the separation effect of the light removal tower, improves the analysis efficiency, and reduces the liquid holding capacity and start-up time of the tower. The specific surface area of ​​the Z-shaped wire mesh filler is greater than 750㎡ / m 3 ; The components are sealed and connected through corrosion-resistant delivery pipelines, and the corrosion-resistant delivery pipelines are stainless steel pipelines.

[0044] Example 3

[0045] A device for the co-production of hexafluoropropylene with tetrafluoroethylene, the same as in Example 3, the diff...

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Abstract

The invention belongs to the technical field of tetrafluoroethylene preparation, and in particular relates to a device, process and application for tetrafluoroethylene co-production of hexafluoropropylene. The device includes: tetrafluoroethylene reactor, tetrafluoroethylene separation device, octafluorocyclobutane recovery device, crude hexafluoropropylene storage device, light removal tower, rectification tower, hexafluoropropylene finished product condenser, etc., among which: Tetrafluoroethylene reactor, tetrafluoroethylene separation unit, and octafluorocyclobutane recovery unit are connected sequentially, and the octafluorocyclobutane recovery unit is connected to the tetrafluoroethylene reactor; the crude hexafluoropropylene storage unit is separated from the tetrafluoroethylene After the device is connected, it is connected to the light removal tower, rectification tower, and hexafluoropropylene product condenser in sequence. The present invention utilizes octafluorocyclobutane and tetrafluoroethylene in by-products to co-produce hexafluoropropylene to obtain high-value-added hexafluoropropylene products, realizes resource utilization of rectification residual liquid, and reduces environmental pressure at the same time.

Description

technical field [0001] The invention belongs to the technical field of tetrafluoroethylene preparation, and in particular relates to a device, process and application for tetrafluoroethylene co-production of hexafluoropropylene. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and it is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Hexafluoropropylene is a colorless, odorless, poisonous gas, non-combustible, difficult to self-polymerize, but can be copolymerized with other monomers. It is mainly used as raw materials for the preparation of fluoropolymers, fluorosulfonic acid ion exchange membranes, fluorocarbon oils and perfluoropropylene oxide, etc., and has great market value and economic benefits. In the ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C21/185C07C21/18C07C17/26C07C17/383
CPCC07C17/26C07C17/383C07C21/18C07C21/185
Inventor 程传兴朱好言邢立军
Owner 聊城氟尔新材料科技有限公司
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