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Process and apparatus for continuous photooxidation preparing polyperfluoromethylethyl ether oil

A technology of methyl ethyl ether and photooxidation, which is applied in the field of preparation of polyperfluoromethyl ethyl ether oil, can solve problems such as peroxide explosion, and achieve a safe and stable reaction effect

Inactive Publication Date: 2003-03-12
CHINA PETROLEUM & CHEM CORP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The invention solves the problem of explosion caused by the existence of peroxide, and makes the reaction safe and stable

Method used

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  • Process and apparatus for continuous photooxidation preparing polyperfluoromethylethyl ether oil
  • Process and apparatus for continuous photooxidation preparing polyperfluoromethylethyl ether oil

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Embodiment Construction

[0015] see figure 1 . The temperature of the photopolymerizer used in this example is -35~-45°C, and the low temperature environment is provided by two 13Kw cascade refrigeration units. The structure of the photopolymerizer is the same as that of the traditional batch reactor, the power of the ultraviolet lamp is 2Kw, and the effective wavelength is 3000mm. Using F12 as a solvent, 3 L / min of tetrafluoroethylene and 4-5 L / min of oxygen are smoothly passed into the photopolymerization tank, and the reaction product is discharged into the photopolymerization tank at an average speed of 0.2 kg / h.

[0016] In fact, the light kettle is a known device, and its structure and working principle will not be described in detail. In the light kettle, the temperature is controlled at 50-65°C, and the synthetic product is irradiated with a 2Kw ultraviolet lamp for 24 hours. Fluoromethyl ethyl ether. The synthesized product is then released for storage for post-processing. In this way, o...

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Abstract

A process for continuously preparing polyperfluoromethylethyl ether oil by optical oxidizing method includes continuously flowing tetrafluoro ethene and O2 gas into optical polymerizer containing bifluorodichloro methane, providing low temp environment by refrigerator set, continuous optical oxidizing-polymerizing reaction at -60 - -20 deg.C under radiation of ultraviolet lamp, dischargint the resultant to radiating reactor, radiating and heating by ultraviolet lamp, and returning the bifluorodichloro methane, low-molecular polymer and unreacted substance back to said polymerizer.

Description

technical field [0001] The invention relates to a preparation method of polyperfluoromethyl ether oil, in particular to a continuous photooxidative preparation method of polyperfluoromethyl ether oil. [0002] The invention also relates to a device for the above-mentioned preparation method. Background technique [0003] Polyperfluoromethyl ether oil is made of tetrafluoroethylene and oxygen as raw materials. The function of ultraviolet light is to activate oxygen at low temperature to form ozone, and ozone oxidizes tetrafluoroethylene to form polymethylethyl ether and peroxidized polymer. The content of peroxidized polymer exceeds 0.1%. Such substances are very prone to explosion when they are hit or heated, which brings great safety hazards to the post-processing work of the reaction products. Contents of the invention [0004] The object of the present invention is to provide a continuous photooxidative preparation method of polyperfluoromethyl ether oil. [0005] An...

Claims

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Application Information

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IPC IPC(8): C08F116/14
Inventor 王军阎葆中刘建芳叶元凯
Owner CHINA PETROLEUM & CHEM CORP
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