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Economical and efficient perfluoronitrile and perfluoroketone co-production process and device

A perfluoroketone and perfluoronitrile technology, which is applied in the field of insulating gas preparation, can solve the problems of inability to realize large-scale application, high production cost, harsh preparation conditions of perfluoronitrile and perfluoroketone, and achieve cheap and efficient catalysts , easy separation and purification, short reaction route

Inactive Publication Date: 2020-06-05
STATE GRID SHAANXI ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the preparation conditions of perfluoronitrile and perfluoroketone are harsh, and the production cost has been high, making it impossible to realize their large-scale application in the industry for a long time.

Method used

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  • Economical and efficient perfluoronitrile and perfluoroketone co-production process and device
  • Economical and efficient perfluoronitrile and perfluoroketone co-production process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The length of the first tubular fixed-bed reactor 5 is 80 cm, the pipe diameter is 1 inch, and the temperature of reaction is 150° C., and the silver oxide with a gac load of 5% is used as the catalyst, and the catalyst filling ratio in the first tubular fixed-bed reactor 5 is: 75%, the O 2 and hexafluoropropylene dimer in a molar ratio of 0.5:1 into the first tubular fixed-bed reactor 5 for reaction, the reaction pressure is 3 bar, and the reaction time is 60 s. As detected by gas chromatography, perfluoroisobutyryl fluoride accounts for 15.5% and trifluoroacetyl fluoride accounts for 16.3% in the product composition;

[0059] The length of the second tubular fixed bed reactor 10 is 80cm, the pipe diameter is 1 inch, and the reaction temperature is 100°C. The CsF with an activated carbon load of 5% is the catalyst, and the catalyst filling ratio in the second tubular fixed bed reactor 10 is 75% %, the obtained trifluoroacetyl fluoride and hexafluoropropylene are passe...

Embodiment 2

[0062] The length of the first tubular fixed-bed reactor 5 is 80 cm, the pipe diameter is 1 inch, and the temperature of reaction is 150° C., and the silver oxide with a gac load of 5% is used as the catalyst, and the catalyst filling ratio in the first tubular fixed-bed reactor 5 is: 75%, the O 2 and hexafluoropropylene dimer in a molar ratio of 1:1 into the first tubular fixed-bed reactor 5 for reaction, the reaction pressure is 3bar, and the reaction time is 60s. As detected by gas chromatography, perfluoroisobutyryl fluoride accounts for 21.3% and trifluoroacetyl fluoride accounts for 23.8% in the product composition;

[0063] The length of the second tubular fixed bed reactor 10 is 80cm, the pipe diameter is 1 inch, and the reaction temperature is 100°C. The CsF with an activated carbon load of 5% is the catalyst, and the catalyst filling ratio in the second tubular fixed bed reactor 10 is 75% %, the obtained trifluoroacetyl fluoride and hexafluoropropylene are passed in...

Embodiment 3

[0066] The length of the first tubular fixed-bed reactor 5 is 80 cm, the pipe diameter is 1 inch, and the temperature of reaction is 170 DEG C. With activated carbon loading, silver oxide of 5% is used as the catalyst. In the first tubular fixed-bed reactor 5, the catalyst filling ratio is: 75%, the O 2 and hexafluoropropylene dimer in a molar ratio of 1:1 into the first tubular fixed-bed reactor 5 for reaction, the reaction pressure is 3bar, and the reaction time is 60s. As detected by gas chromatography, perfluoroisobutyryl fluoride accounts for 26.2% and trifluoroacetyl fluoride accounts for 27.6% in the product composition;

[0067] The length of the second tubular fixed bed reactor 10 is 80 cm, the pipe diameter is 1 inch, and the reaction temperature is 120° C., and the CsF with an active carbon load of 5% is the catalyst, and the catalyst filling ratio in the second tubular fixed bed reactor 10 is 75 %, the obtained trifluoroacetyl fluoride and hexafluoropropylene are ...

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Abstract

The invention discloses an economical and efficient perfluoronitrile and perfluoroketone co-production process and a device. The economicaland efficient perfluoronitrile and perfluoroketone co-production process comprises the following steps: reacting oxygen with an asymmetric perfluoroolefin to generate two acyl fluoride gases or generate a perfluoroketone gas and an acyl fluoride gas; when the two kinds of acyl fluoride gas are generated, and the boiling point of the first acyl fluoride gas is higher than that of the second acyl fluoride gas, subjectingthe first acyl fluoride gas and ammoniagascontact reaction for conversion into a perfluoroamide, and dehydrating and convertingthe perfluoroamide is into a perfluoronitrile; mixing and reacting the second acyl fluoride gas with hexafluoropropylene to generate a perfluoroketone compound; when perfluoroketone gas and an acyl fluoride gas are generated, separating the perfluoroketone gas and the acyl fluoride gas, condensing and collecting the perfluoroketone gas, and subjecting the acyl fluoride gas and ammonia gastocontact reaction for conversion into perfluoroamide, anddehydrating and converting the perfluoroamideinto the perfluoronitrile. According to the method, the perfluoronitrileand the perfluoroketone can be prepared at the same time, the preparation conditions are simple, and the atom economy of the reaction route is high.

Description

technical field [0001] The invention belongs to the field of insulating gas preparation, in particular to an economical and efficient co-production process and device of perfluoronitrile and perfluoroketone. Background technique [0002] With the development of the global economy and the growth of population, the impact of various greenhouse gases produced by the combustion of fossil fuels and industrial production on the environment is increasing. In order to cope with global climate change, reducing the emission of greenhouse gases will be a dilemma for the global economic development for a long time to come. The greenhouse effect of sulfur hexafluoride insulating gas widely used in the power industry is 23,900 times that of carbon dioxide and is extremely difficult to degrade. In order to reduce the use of such greenhouse gases, weaken the impact on the atmospheric environment, and protect the natural environment on which human beings depend, Higher requirements are plac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/25C07C53/50C07C53/40C07C45/45C07C49/167C07C231/02C07C233/05C07C253/20C07C255/10B01J23/50B01J27/12B01J23/755B01J31/02B01J23/28
CPCC07C51/25C07C45/455C07C231/02C07C253/20B01J23/50B01J27/12B01J23/755B01J31/0254B01J23/28B01J31/0271
Inventor 吴健丁德陈殷吴跃伟白晓春吕平海郭安祥
Owner STATE GRID SHAANXI ELECTRIC POWER RES INST
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