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Method for preparing phenylethyl phenyl ethane capacitor insulating oil by using solid acid catalyst

A technology catalyzed by phenylethylphenylethane and solid acid, which is applied in base materials, organic chemistry, petroleum industry, etc. It can solve the problems of complex catalyst regeneration process, inability to recycle, catalyst deactivation, etc., and achieve catalyst activity maintenance The effect of constant, high selectivity and high catalytic activity

Active Publication Date: 2013-09-25
SICHUAN DONGFANG INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and solve the technical problem that styrene is easily polymerized into styrene oligomers on the surface of the solid acid catalyst in the existing solid acid catalyst method to cause catalyst deactivation, which cannot be recycled , there are still the shortcomings of complex catalyst regeneration process and high cost. To provide a catalyst that can be recycled, with simple process and low cost, using ethylbenzene and chlorine as raw materials and solid acid catalysis to prepare phenylethylphenylethane capacitor insulating oil Methods

Method used

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  • Method for preparing phenylethyl phenyl ethane capacitor insulating oil by using solid acid catalyst
  • Method for preparing phenylethyl phenyl ethane capacitor insulating oil by using solid acid catalyst

Examples

Experimental program
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Effect test

Embodiment 1-1

[0025] Add 4 mol of ethylbenzene to reactor A, and under the action of stirring, 120°C and ultraviolet light irradiation, feed 1 mol of chlorine gas into reactor A at a constant speed for 3 hours. The hydrogen chloride gas generated in the process is absorbed by water to obtain the by-product hydrochloric acid to be discharged, and cooled to room temperature to obtain a mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene;

[0026] Add the mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene in the reactor A to a mixture of 5mol ethylbenzene and 10g JHSK-8 gel-type strong acid cation at 60°C at one time Reaction was carried out in the reactor B of exchange resin, 6g mordenite mixture; After mixing, continue to react at 80 ℃ for 4 hours, after gas chromatography detection α-chloroethylbenzene and β-chloroethylbenzene are completely consumed, Stop the reaction, absorb the hydrogen chloride gas generated in the reaction process with water, get ...

Embodiment 1-2

[0029] Add 5 mol of ethylbenzene into reactor A, and under stirring, 110°C and 5 g of azobisisobutyronitrile, 1 mol of chlorine gas is passed into reactor A at a constant speed for 3 hours. After the chlorine gas is passed through, continue the reaction for 2 hour, the hydrogen chloride gas generated in the reaction process is absorbed by water to obtain the discharge of by-product hydrochloric acid, and is down to room temperature, and the mixed material of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene obtained;

[0030]Add the mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene in the reactor A to the reactor B containing the mixture of 5mol ethylbenzene and 20g zeolite β at 60°C at one time Carry out the reaction; after the mixing is completed, continue the reaction at 70°C for 8 hours, and stop the reaction after the gas chromatography detects that α-chloroethylbenzene and β-chloroethylbenzene are completely consumed, and absorb the hydrogen...

Embodiment 1-3

[0033] Add 6 mol of ethylbenzene into reactor A, and under stirring, 130°C and ultraviolet light irradiation, 1 mol of chlorine gas is passed into reactor A at a constant speed for 4 hours. After the chlorine gas is passed through, continue to react for 1 hour. The hydrogen chloride gas generated in the process is absorbed by water to obtain the by-product hydrochloric acid and discharged, and kept warm to obtain a mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene;

[0034] Add the mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene in Reactor A to a mixture containing 10mol ethylbenzene, 5g L-type zeolite, 10g ZSM-12 at 100°C at one time The mixture was reacted in Reactor B; after the mixing was completed, the reaction was continued at 100°C for 8 hours, and after the complete consumption of α-chloroethylbenzene and β-chloroethylbenzene was detected by gas chromatography, the reaction was stopped. During the reaction The generated hydro...

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Abstract

The invention discloses a method for preparing a phenylethyl phenyl ethane capacitor insulating oil by using a solid acid catalyst. The method is characterized by comprising the following steps of: enabling 2-10 mol of ethylbenzene to react with 1 mol of chlorine to generate alpha-chloro-ethylbenzene and beta-chloro-ethylbenzene at 110-150 DEG C and under the action of ultraviolet irradiation or an initiation action of a radical initiator; directly mixing the mixture generated by reaction without separating with a mixture of 1-20g of solid acid catalyst and 2-10mol of ethylbenzene at 60-150 DEG C and reacting to obtain phenylethyl phenyl ethane. By adopting the method, the phenylethyl phenyl ethane capacitor insulating oil prepared by using the method has the excellent properties of normal-temperature insulating oil, namely phenyl ditolyl ethane, has the condensation point being greatly lower than that of the phenyl ditolyl ethane, has the unique low-temperature resistance and is especially suitable for being used as low-temperature capacitor insulating oil.

Description

technical field [0001] The invention belongs to a preparation method of a compound containing only carbon and hydrogen, and relates to a method for preparing phenylethylphenylethane capacitor insulating oil by solid acid catalysis. The phenylethylphenylethane (PEPE for short) product prepared by the invention is mainly used as insulating oil for capacitors, and is especially suitable for insulating oil for low-temperature capacitors. Background technique [0002] Capacitor insulating oil is one of the key materials for manufacturing high-performance power capacitors, and its quality determines the reliability of safe and efficient operation of high-voltage power grids. At present, all-film power capacitors use diarylethane type [including: phenylxylylethane (PXE for short) and phenylethylphenylethane (PEPE for short)] and benzyltoluene type capacitor insulating oil. The synthetic method of preparing phenylethylphenylethane is similar to that of phenylxylylethane, both of wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C15/18C07C2/88C10M105/06C10N40/16
Inventor 杨玉川唐安斌黄杰马庆柯赵宝祥
Owner SICHUAN DONGFANG INSULATING MATERIAL
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