Technique and device for synthesizing methyl chlorosilane

The technology of methyl chlorosilane and process is applied in the field of simple devices for evaluating the reaction conditions of methyl chlorosilane, can solve the problems of large device investment, complicated operation, long process flow, etc., and achieves accurate experimental conclusion, good temperature stability, slow effect

Inactive Publication Date: 2017-01-04
HUBEI XINGRUI SILICON MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The device is very close to the actual industrial device, and the evaluation effect on various reaction conditions is good, but the process flow is long, the device investment is large, and many equipm

Method used

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  • Technique and device for synthesizing methyl chlorosilane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Turn on the sand bath temperature control device to raise the temperature in the stirred bed reactor to a set 360°C; mix silicon powder and catalyst (the catalyst is composed of a main catalyst and a co-catalyst, wherein the main catalyst is a ternary copper mixture, that is, a simple substance The mixture of copper powder, cupric oxide and cuprous oxide, elemental copper accounts for 50% by weight percentage, cupric oxide 30%, cuprous oxide 20%; Described cocatalyst is made up of zinc powder, tin powder, and zinc powder accounts for about 8% of the mass of the main catalyst, and tin powder accounts for 1% of the mass of the main catalyst.) Mix evenly at 50:1 (the particle size of the silicon powder is 30 μm), send it into the stirring bed through the feeding device, and start the magnetic stirring; take it from the industrial device The returned methyl chloride enters the stirred bed with a flow rate of 2L / h after being vaporized by the methyl chloride vaporizer, and th...

Embodiment 2

[0030] Other implementation conditions are the same as 1, when reaction temperature is 400 DEG C, silicon powder and catalyzer (the described catalyzer is made up of procatalyst and cocatalyst, wherein, procatalyst is ternary copper mixture, i.e. elemental copper powder, copper oxide and The mixture of cuprous oxide, elemental copper accounts for 30% by weight percentage, cupric oxide 40%, cuprous oxide 30%; Described cocatalyst is made up of zinc powder, tin powder, and zinc powder accounts for about 5% of main catalyst mass , tin powder accounted for 0% of the mass of the main catalyst.) According to 80:1 mixed evenly (silicon powder particle size is 50μm), the product component content is as follows: monomethyltrichlorosilane 49.073%, dimethyldichlorosilane 36.013% , trimethylchlorosilane 3.292%, other 11.622%.

Embodiment 3

[0032] Other implementation conditions are the same as 1. When the reaction temperature is 300°C, the product component content is as follows: 45.989% of monomethyltrichlorosilane, 42.117% of dimethyldichlorosilane, 4.518% of trimethylmonochlorosilane, and 7.376% of others .

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Abstract

The invention provides a technique and device for synthesizing methyl chlorosilane. The method comprises the following steps: a sand bath temperature control device is started to increase the temperature in a stirred bed reactor to the preset temperature; the weighed silicon powder and catalyst are uniformly mixed and pressed into the stirred bed under the action of nitrogen through a charging device on the upper part of the stirred bed reactor, and a magnetic stirring device is started; methyl chloride in a methyl chloride storage tank is vaporized by a methyl chloride vaporizer and enters the sand bath temperature control device through a fluidized bed inlet flowmeter to control the methyl chloride inlet reaction flow rate; and the reaction product is condensed by the product condenser and collected from the lower part of a product collector, and the uncondensed gas enters a tail gas buffer tank to be collected, is absorbed by an NaOH solution tank and discharged to the outside. The reaction temperature, reaction pressure, methyl chloride quality, silicon powder quality, catalyst quality and other reaction conditions in the methyl chlorosilane production process have favorable evaluation effects, thereby greatly lowering the industrial plant adjustment risks and enhancing the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical organic silicon production, and in particular relates to a simple device and method for evaluating reaction conditions of methylchlorosilane. Background technique [0002] Silicone material is a new type of material with unique functions and dual properties of inorganic and organic materials. It is widely used in aerospace, electronic appliances, daily chemicals, medical and health industries, and plays an important role in national production and life. Among the many organosilicon monomers used in the preparation of organosilicon materials, methylchlorosilane accounts for more than 90% (wt%). Therefore, the production technology level of methylchlorosilane is one of the important basis for measuring the level of a country's organosilicon production technology one. [0003] At present, organic silicon production enterprises at home and abroad use silicon powder and methyl chloride to directly re...

Claims

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Application Information

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IPC IPC(8): C07F7/16C07F7/20B01J8/10B01F13/08
CPCB01J8/10C07F7/16C07F7/20B01J2219/00087B01F33/453
Inventor 李书兵颜昌锐王文金胡伟明
Owner HUBEI XINGRUI SILICON MATERIAL CO LTD
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