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A kind of continuous production process of hexafluoropropylene oxide

A hexafluoropropylene oxide and production process technology, applied in the field of continuous production process of hexafluoropropylene oxide, can solve the problems of poor mixing effect, complex process and high energy consumption in tubular reactors, and achieve precise control of reaction conditions and process Simple process and good selectivity

Active Publication Date: 2018-05-15
中化蓝天氟材料有限公司 +1
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  • Abstract
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Problems solved by technology

However, the process of this method is relatively complicated, the energy consumption is high, and the mixing effect of the tubular reactor is poor, and local overheating may occur.

Method used

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  • A kind of continuous production process of hexafluoropropylene oxide
  • A kind of continuous production process of hexafluoropropylene oxide
  • A kind of continuous production process of hexafluoropropylene oxide

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Embodiment

[0026] The mixture of perfluorocycloalkane and fluorocarbon cyclic ether is used as the organic solvent. The hexafluoropropylene (18) coming out from the hexafluoropropylene storage tank (2) is first mixed with the oxygen (19) coming out from the oxygen cylinder (5), and then mixed with the organic solvent (17) coming out from the organic solvent intermediate tank 1 ) are mixed to form a mixed material (20) and enter the microchannel reactor (11). Hexafluoropropylene and oxygen fully react in the microchannel reactor (11), and the resulting reaction product (21) is cooled by the coaxial heat exchanger (12) and then enters the buffer tank (14) for simple separation, and the obtained product is mainly an organic solvent The liquid phase part (22) and the gas phase part (23) that is mainly hexafluoropropylene oxide, wherein: the liquid phase part (22) that is mainly the organic solvent is recycled to the organic solvent intermediate tank ( 1) Continue to use, mainly the gas phas...

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Abstract

The invention discloses a hexafluropropylene oxide continuous production technique by using a microchannel reactor. The technique can avoid the phenomena of temperature runaway and oxidative burst, implements smooth temperature control, and has the advantages of high reaction conversion rate and favorable selectivity.

Description

technical field [0001] The invention relates to a continuous production process of hexafluoropropylene oxide, in particular to a method for oxidizing hexafluoropropylene into hexafluoropropylene oxide in a microchannel reactor. Background technique [0002] Hexafluoropropylene oxide (C 3 f 6 O), also known as perfluoropropylene oxide, is an important fluorine-containing intermediate, which can be used to synthesize perfluorinated ion exchange resins, fluoroplastics, fluororubbers, fluorosurfactants, fluorinated lubricating oils, and advanced cleaning agents Such important fluorine-containing compounds are widely used in aerospace, electronics, medicine and other fields. [0003] In the prior art, hexafluoropropylene oxide is basically prepared by reacting hexafluoropropylene as a raw material with different oxidants. When oxygen is used as the oxidant, the choice of reactor is very important, and the following reports are currently available: [0004] (1) Most of the exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D301/06C07D303/48
CPCC07D301/06C07D303/48
Inventor 陈先进徐卫国张静天姜彬欧阳旭
Owner 中化蓝天氟材料有限公司
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