Organosilicon slag slurry treatment method and apparatus thereof

A technology for organosilicon slag slurry and treatment method, which is applied in the fields of organic chemistry, organic silicon compounds, chemical instruments and methods, etc., can solve the problems of effective resource waste, hidden dangers, fire or explosion, etc., to solve environmental protection and safety problems, The effect of saving processing costs

Active Publication Date: 2009-03-18
ZHENJIANG JIANGNAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method not only fails to recycle a large amount of high boiling substances in the slurry, but causes a lot of waste of effective resources. More importantly,

Method used

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  • Organosilicon slag slurry treatment method and apparatus thereof
  • Organosilicon slag slurry treatment method and apparatus thereof
  • Organosilicon slag slurry treatment method and apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preheat the 1000kg slurry (solid content 37.64%, high boiling matter 62.36%) from the reboiler of the methyl chlorosilane monomer synthesis washing tower to 210°C through the preheater, add it to the conical evaporator, and start the single screw belt The speed of the stirrer was 12 rpm, the temperature in the kettle was controlled at 250-260°C, and the operation was carried out under normal pressure for 5 hours. The results are shown in Table 1.

[0017] Table 1 The obtained product weight

[0018]

Embodiment 2

[0020] The 2000kg slurry (solid content 35.34%, high boiler 64.66%) from the reboiler of the methyl chlorosilane monomer synthesis washing tower is preheated to 200°C by the preheater, added to the conical spiral evaporator, and the double screw evaporator is started. The speed of the agitator is 10 rpm, the temperature in the kettle is controlled at 230-240°C, and the operation is carried out under normal pressure for 5 hours. The results are shown in Table 2.

[0021] Table 2 The weight of the product obtained

[0022]

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PUM

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Abstract

The invention relates to the field of organosilicon production, in particular to a method and a device for processing organosilicon slurry. The method is characterized by pre-heating the organosilicon slurry, guiding the organosilicon slurry in a cone-shaped evaporator, evaporating high boiling materials through stirring, condensing and then collecting the high boiling materials to a storage tank, and discharging the residue. The invention also discloses a cone-shaped evaporator. The method for processing the organosilicon slurry overcomes the defect of the prior art of failing to recycle large amount of high boiling materials, the high boiling materials can be evaporated out to the maximum while ensuring no serious slurry conglomerates, and the recovery rate is more than or equal to 80 percent. The recycled high boiling materials are cracked to obtain a methyl chlorosilane monomer and the residue after evaporation can be recycled better. The method not only solves the problems of environmental protection and safety, but also saves the cost for processing the slurry.

Description

technical field [0001] The invention relates to the field of organic silicon production, in particular to a treatment method and a treatment device for organic silicon slurry. Background technique [0002] Organosilicon slurry is the waste produced during the synthesis of organosilicon monomers, especially methyl chlorosilane monomers. It is mainly composed of a large amount of high boilers and a small amount of unreacted silicon powder and copper powder brought out of the fluidized bed. , High boiler refers to the high boiling point polysilane mixture with silicon-silicon bond, silicon-carbon-silicon bond, silicon-oxygen-silicon bond, silicon-oxygen-silicon bond, silicon-silicon bond, silicon-carbon-silicon bond, silicon-oxygen-silicon bond, and a boiling range of 70.3-250 °C produced during the synthesis of methylchlorosilane monomer. . If this part of the material is exposed to the air, it will burn or form a strong acid mist or liquid. Therefore, if it is directly disch...

Claims

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Application Information

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IPC IPC(8): C07F7/20C07F7/12C07F7/18A62D3/00
Inventor 张友林朱德洪祝纪才朱恩俊
Owner ZHENJIANG JIANGNAN CHEM
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