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Method and equipment for comprehensive recycling treatment on organic silicon slag slurry

A technology of organic silicon slag slurry, recycling and processing, applied in the direction of silicon organic compounds, silicon compounds, organic chemistry, etc., can solve the problems of cumbersome workload, environmental pollution, waste of resources, etc., to increase distillation effect, improve heat transfer efficiency, The effect of increasing the contact area

Active Publication Date: 2018-09-21
CHENGDU SILICON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing organic silicon slag processing method has cumbersome workload, high cost, or waste of resources, which will cause environmental pollution. The present invention provides an organic The method of comprehensive recovery and treatment of silicon slag can effectively recover copper and silicon resources in organic silicon slag, which is environmentally friendly and economical

Method used

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  • Method and equipment for comprehensive recycling treatment on organic silicon slag slurry
  • Method and equipment for comprehensive recycling treatment on organic silicon slag slurry

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Effect test

Embodiment 1

[0040] like figure 1 As shown, a method for comprehensive recovery and treatment of organic silicon slag, the specific operation is: the organic silicon slag is separated by a distiller to obtain a high-boiling gas phase and solid slag; the solid slag is dissolved by adding acid, and the dissolved liquid-solid ratio is 1:5 , the dissolution time is 10 hours, and the dissolution temperature is 20°C; after the dissolution is completed, filter and separate the copper-containing solution and filter residue, and the filter residue is washed and dried to obtain silicon powder; add zinc in an amount that is 1.1 times the theoretical amount of zinc powder required to replace copper with the copper-containing solution The powder was subjected to a replacement reaction, and metal copper powder was obtained by filtration; the gas phase of the high boiler separated by the distiller was condensed, and 400 g of the condensed material was added to a 500 mL round-bottomed three-necked flask, a...

Embodiment 2

[0042] A method for comprehensive recovery and treatment of organic silicon slag, the specific operation is: the organic silicon slag is separated by a distiller to obtain a high-boiling gas phase and solid slag; the solid slag is dissolved by adding acid, the dissolved liquid-solid ratio is 1:1, and the dissolution time 5h, the melting temperature is 60°C. After the dissolution is completed, filter to separate the copper-containing solution and filter residue, and the filter residue is washed and dried to obtain silicon powder; add zinc powder according to 1.3 times the theoretical amount of zinc powder required for copper-containing solution to replace copper for replacement reaction, and filter to obtain metal copper powder Condensate the gaseous phase of the high boilers obtained by the separation of the distiller, get 400g of material after condensation and join in a 500mL round-bottomed three-necked flask, add catalyst tri-n-butylamine 20g therein, and control the feed ra...

Embodiment 3

[0044] A method for comprehensive recovery and treatment of organic silicon slag, the specific operation is: the organic silicon slag is separated by a distiller to obtain a high-boiling gas phase and solid slag; the solid slag is dissolved by adding acid, the dissolved liquid-solid ratio is 5:1, and the dissolution time is 5:1. 0.5h, the melting temperature is 90°C. After the dissolution is completed, filter and separate the copper-containing solution and filter residue, and the filter residue is washed and dried to obtain silicon powder; add zinc powder according to 1.2 times the theoretical amount of zinc powder required for copper-containing solution to replace copper for replacement reaction, and filter to obtain metal copper powder Condensate the gaseous phase of the high boilers obtained by the separation of the distiller, get 400 g of the condensed material and add it to a 500 mL round-bottomed three-neck flask, add catalyst tri-n-butylamine 10 g therein, and control th...

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Abstract

The invention discloses a method and equipment for comprehensive recycling treatment on organic silicon slag slurry. The method comprises the following steps: 1, separating organic silicon slag slurryby using a distiller so as to obtain gas-phase high-boiling residues and solid residues; 2, dissolving the solid residues with an acid, and after dissolution is completed, carrying out filtration andseparation so as to obtain a copper-containing solution and filter residues; 3, washing the filter residues obtained in the step 2, and drying so as to obtain silicon powder; 4, putting zinc powder into the copper-containing solution separated in the step 2 to carry out replacement so as to obtain metallic copper powder; 5, condensing the gas-phase high-boiling residues obtained in the step 1 soas to obtain liquid high-boiling residues, and carrying out catalytic cracking on the liquid high-boiling residues with a catalyst; 6, carrying out fractionation on a gas phase obtained through catalytic cracking in the step 5, and collecting monomethyl trichlorolsilane, dimethyl diclorossilane, trimethylchlorosilane and monomethyl hydrosilane. By adopting the method and the equipment, copper andsilicon resources in organic silicon slag can be effectively recycled, thus being environmental-friendly and economic.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method and equipment for comprehensive recovery and treatment of organic silicon slag slurry. Background technique [0002] Organosilicon slurry is the waste generated during the synthesis of organosilicon monomers, accounting for about 3% of the monomer output. It is mainly composed of high boiling matter and a small amount of unreacted silicon powder, copper powder, and zinc powder brought out of the fluidized bed. Silicon-silicon bond, silicon-carbon-silicon bond, silicon-oxygen-silicon structure disilane mixture. It is easy to burn and form acid mist when exposed to the air, and must be treated in a pollution-free manner. At present, most organic silicon manufacturers treat organic silicon slurry by pouring it into the slurry tank for hydrolysis. During this process, a large amount of hydrogen chloride acid gas will be generated, which will corrode the surrounding envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/08C07F7/12C07F7/20C01B33/021
CPCC01B33/021C07F7/0896C07F7/12C07F7/20
Inventor 羊实周旭
Owner CHENGDU SILICON TECH CO LTD
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