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Preparation method of phenyl chlorosilane

A technology of phenylchlorosilane and silicon tetrachloride, which is applied in the field of preparing silicon-containing carbocyclic compounds, to achieve the effects of increasing profit margins, reducing catalyst costs, and increasing production

Active Publication Date: 2013-02-20
ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the existing phenylchlorosilane production field, the purpose of the present invention is to provide a method for preparing phenylchlorosilane with a relatively high content of diphenyldichlorosilane in the product

Method used

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  • Preparation method of phenyl chlorosilane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Control the rotation speed of the star feeder at the bottom of the contact body, and use dry N 2 At a pressure 0.05MPa higher than the pressure at the top of the ebullated bed, the contact body is sent from the pusher horizontal tube into the reactor.

[0036] The reaction is continuous feeding and discharging, and a reaction cycle in the fluidized bed is 1000 hours. During this period, the mixed raw material gas of chlorinated benzene and silicon tetrachloride is continuously fed, and the silicon copper powder is added at an interval of 7-9 hours. 40-70Kg, the output is chlorinated benzene mixed raw material gas and silicon-copper powder react in the ebullating bed to form 1-phenyltrichlorosilane and diphenyldichlorosilane and by-products, then pass through the dust collector to remove dust, sleeve condenser After condensation, it enters the light component removal tower to remove most of the light components such as chlorinated benzene, silicon tetrachloride, and benz...

Embodiment 2

[0044] Control the rotation speed of the star feeder at the bottom of the contact body, and use dry N 2 At a pressure 0.05MPa higher than the pressure at the top of the ebullated bed, the contact body is sent from the pusher horizontal tube into the reactor.

[0045] During synthesis, the mixed raw material is sent from the metering tank to the raw material vaporizer by the metering pump at a rate of 120L / h. After heating and vaporizing, it is further preheated on the pipeline to 270°C and enters the bed from the bottom of the ebullating bed to react. The ebullated bed reaction temperature is 510°C, and the pressure difference between the inlet and outlet is 0.04MPa. The speed of the fluidized bed discharge is the same as the feed speed.

[0046] The synthetic gas is filtered by a dry dust collector, then water-cooled by a sleeve condenser and then sent to a vapor-liquid separator, the condensate enters the tank of the light removal tower, and the uncondensed vapor phase mate...

Embodiment 3

[0052] Control the rotation speed of the star feeder at the bottom of the contact body, and use dry N 2 At a pressure 0.05MPa higher than the pressure at the top of the ebullated bed, the contact body is sent from the pusher horizontal tube into the reactor.

[0053] During the synthesis, the mixed raw material is sent from the metering tank to the raw material vaporizer by the metering pump at a rate of 90L / h. After heating and vaporizing, it is further preheated on the pipeline to 240°C and enters the bed from the bottom of the ebullating bed to react. The ebullated bed reaction temperature is 530°C, and the pressure difference between the inlet and outlet is 0.055MPa. The speed of the fluidized bed discharge is the same as the feed speed.

[0054] The synthetic gas is filtered by a dry dust collector, then water-cooled by a sleeve condenser and then sent to a vapor-liquid separator, the condensate enters the tank of the light removal tower, and the uncondensed vapor phase ...

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Abstract

The invention provides a preparation method of phenyl chlorosilane. The preparation method comprises the following steps: (1) a mixture of 4-8 parts by weight of benzene chloride and 0-1 part by weight of silicon tetrachloride is added into a reactor; (2) a contact is added into the reactor; and (3) the temperature of the reactor is controlled at 510-530 DEG C, and a reaction is carried out. According to the method provided by the invention, the addition of silicon tetrachloride as a co-catalyst is eliminated, such that catalyst cost is reduced, and processes are simplified. The yield of high-economic-value diphenyl dichlorosilane in a product is improved, and product economic value is improved. With the method provided by the invention, the benefit of phenyl crude monomer can be improved by approximately 15,000 Yuan / ton, such that the yield of high-added-value product is improved, and device profit margin is improved.

Description

technical field [0001] The invention belongs to the field of silicon-containing carbocyclic compounds, in particular to a method for preparing silicon-containing carbocyclic compounds from silicon and chlorinated hydrocarbons. Background technique [0002] Phenylchlorosilane is one of the important monomers for the synthesis of silicone polymer materials. It is used in the production of silicone rubber, silicone oil, silicone resin, etc. to improve the heat resistance, weather resistance, and radiation resistance of materials. The product obtained by producing phenylchlorosilane contains diphenyldichlorosilane (colorless liquid at normal temperature, molecular formula (C 6 h 5 ) 2 SiCl 2 ) and a phenyltrichlorosilane (formula C 6 h 5 SiCl 3 ) These two compounds, among them, diphenyldichlorosilane can be used to manufacture diphenyldihydroxysilane, alcoholysis nucleophilic reaction with methanol to prepare DDS, and used as a structure control agent for silicone rubber,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/12
Inventor 李志超蒲文伦何剑秋赵猛飞
Owner ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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