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Method and device for synthesizing phenyl chlorosilane

A technology of phenylchlorosilane and synthesis method, which is applied in the direction of silicon organic compounds, chemical methods for reacting gas medium with gas medium, chemical instruments and methods, etc., which can solve the problems of tail gas system blockage, low reaction efficiency, poor selectivity, etc. , to avoid system blockage, high conversion rate and low cost

Pending Publication Date: 2020-08-18
江西宏柏新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention designs a synthesis method and device for phenylchlorosilane, so as to avoid the problems of system blockage, low reaction efficiency, poor selectivity, and tail gas system blockage caused by carbon deposits generated during the production of phenylchlorosilane by heat shrinkage , to achieve the purpose of continuous and stable production, convenient operation, high conversion rate and low cost

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  • Method and device for synthesizing phenyl chlorosilane
  • Method and device for synthesizing phenyl chlorosilane

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preparation example Construction

[0036] The invention provides a kind of synthetic method of phenylchlorosilane, comprising steps:

[0037] S1, raw material mixing and vaporization: After mixing hydrochlorosilane and chlorobenzene in a certain proportion, heat the mixture to vaporize;

[0038] S2, thermal condensation reaction: the vaporized mixture is heated together with the initiator to a certain temperature and then enters the reactor for thermal condensation reaction to generate a mixed gas containing phenylchlorosilane;

[0039] S3, cooling and washing the product: cooling and washing the mixed gas containing phenylchlorosilane;

[0040] S4, Separation of phenylchlorosilane: Condensate and lower the temperature of the mixed gas containing phenylchlorosilane after cooling and washing. Part of the components in the mixed gas are liquefied to obtain crude phenylchlorosilane, and the remaining non-condensable gas is sent to the hydrogen-containing chlorine Silane synthesis furnace;

[0041] S5: Purificati...

Embodiment 1

[0097] The synthetic method of phenylchlorosilane described in this embodiment is carried out according to the following steps:

[0098] S1, raw material mixing and vaporization: After mixing trichlorosilane and chlorobenzene in a molar ratio of 2:1, heat to 100°C to vaporize the mixture;

[0099] S2, Thermal condensation reaction: The vaporized mixture is heated together with cumene hydroperoxide to 200°C and then enters the reactor for thermal condensation reaction. It reacts for 50s at a temperature of 400°C and a pressure of 0.01MPaG to generate phenyl chloride Mixed gas of silane;

[0100] S3, cooling and washing the product: cooling and washing the mixed gas containing phenylchlorosilane to 80 °C by using a circulating cooling liquid with a temperature of 50 °C;

[0101] S4, Separation of phenylchlorosilane: Condensate and lower the temperature of the mixed gas containing phenylchlorosilane after cooling and washing. Part of the components in the mixed gas are liquefied...

Embodiment 2

[0106] The synthetic method of phenylchlorosilane described in this embodiment is carried out according to the following steps:

[0107] S1, raw material mixing and vaporization: after mixing dichlorodihydrosilane and chlorobenzene in a molar ratio of 0.9:1, heat to 150°C to vaporize the mixture;

[0108] S2, thermal condensation reaction: the vaporized mixture is heated together with chloroform to 500°C and enters the reactor for thermal condensation reaction, and reacts for 100s at a temperature of 600°C and a pressure of 0.08MPaG to generate a mixed gas containing phenylchlorosilane;

[0109] S3, cooling and washing the product: cooling and washing the mixed gas containing phenylchlorosilane to 180 °C by using a circulating cooling liquid with a temperature of 150 °C;

[0110] S4, Separation of phenylchlorosilane: Condensate and lower the temperature of the mixed gas containing phenylchlorosilane after cooling and washing. Part of the components in the mixed gas are liquefi...

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Abstract

The invention provides a method and a device for synthesizing phenyl chlorosilane. The method comprises the following steps: S1, mixing and vaporizing raw materials; S2, carrying out a thermal condensation reaction; S3, cooling and washing a product; S4, separating phenyl chlorosilane; and S5, purifying the phenyl chlorosilane crude product. Through the synthesis method and device of phenyl chlorosilane, carbon deposits in a reactor and a tail gas system can be removed in time; the problems of system blockage, low reaction efficiency, poor selectivity and tail gas system blockage caused by carbon deposition in the production process are effectively solved, and then the purposes of continuous and stable production, convenient operation, high conversion rate and low cost are achieved.

Description

technical field [0001] The invention relates to the preparation of organochlorosilane, in particular to a synthesis method and device of phenylchlorosilane. Background technique [0002] Phenylchlorosilane is an important raw material for the synthesis of phenylalkoxysilane, phenylsilanol, phenyl silicone oil, phenyl silicone resin and phenyl silicone rubber. [0003] At present, the main preparation methods of phenylchlorosilane include Grignard reagent method, direct method and thermal shrinkage method. in: [0004] The Grignard reagent method generally uses chlorobenzene and trichlorosilane or methyldichlorosilane as raw materials, uses Grignard reagent as a catalyst, and adds a certain amount of solvent to control a certain temperature and pressure reaction to obtain phenylchlorosilane products. The main disadvantages of this method are the need to use organic solvents, high requirements for the preparation process, improper control during the reaction process, easy to...

Claims

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Application Information

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IPC IPC(8): C07F7/12C07F7/20B01J12/00B01J19/24
CPCC07F7/122C07F7/20B01J12/005B01J19/0053B01J19/249B01J2219/00081
Inventor 胡成发叶科文蒋鑫黄克生彭长生
Owner 江西宏柏新材料股份有限公司
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