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Disposal method of organic silicon copper-containing waste catalyst

Inactive Publication Date: 2012-07-04
ZHANGJIAGANG KAINA INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above-mentioned traditional process oxidation method and deep conversion method have the disadvantages of difficult acid treatment, large equipment investment, serious environmental pollution, and high temperature and high energy consumption in the smelting method.
The deactivation method only deactivates the spent catalyst without recycling it

Method used

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  • Disposal method of organic silicon copper-containing waste catalyst
  • Disposal method of organic silicon copper-containing waste catalyst
  • Disposal method of organic silicon copper-containing waste catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1 ton of organic copper-containing waste catalyst is pulverized in a pulverizer, and then immersed in a leaching kettle filled with 4 tons of ammonium carbonate solution with a concentration of 1.2 mol / liter, and the solution in the leaching kettle is constantly stirred, and the leaching kettle The temperature of the solution is controlled at 40 degrees, soaked for 8 hours, the centrifuge is used to separate the leaching liquid from solid to liquid, and the separated solid phase is cleaned and dried to form a silicon-containing raw material (silicon powder). The solution is introduced into a distillation kettle with a pressure of 0.2Mpa to carry out negative pressure ammonia distillation for 4 hours, and absorb the ammonia and carbon dioxide produced in the process of negative pressure ammonia distillation with water; filter the solution obtained after negative pressure ammonia distillation, filter 80 kilograms of the filter residue that obtains afterward, wherein contai...

Embodiment 2

[0031] 1 ton of organic copper-containing waste catalyst is pulverized in a pulverizer, and then immersed in a leaching kettle filled with 5 tons of ammonium carbonate solution with a concentration of 1.25 mol / liter, and the solution in the leaching kettle is continuously stirred, and the leaching kettle The temperature of the solution is controlled at 50 degrees, soaked for 6 hours, the leachate is separated from the solid and liquid by a centrifuge, the separated solid phase is cleaned and dried to form a silicon-containing raw material (silicon powder), and the separated copper ammonia The solution is introduced into a distillation kettle with a pressure of 0.3Mpa to carry out negative pressure ammonia distillation for 3 hours, and absorb the ammonia and carbon dioxide produced in the process of negative pressure ammonia distillation with water; the solution obtained after negative pressure ammonia distillation is filtered and filtered 82 kilograms of the filter residue that...

Embodiment 3

[0033] 1 ton of organic copper-containing waste catalyst is pulverized in a pulverizer, then immersed in a leaching kettle filled with 6 tons of ammonium carbonate solution with a concentration of 2 mol / liter, and the solution in the leaching kettle is constantly stirred, and the leaching kettle The temperature of the solution is controlled at 60 degrees, soaked for 4 hours, the leachate is separated from the solid and liquid by a centrifuge, and the separated solid phase is cleaned and dried to form a silicon-containing raw material (silicon powder). The solution is introduced into a distillation kettle with a pressure of 0.4Mpa to carry out negative pressure ammonia distillation for 2 hours, and absorb the ammonia and carbon dioxide produced in the process of negative pressure ammonia distillation with water; filter the solution obtained after negative pressure ammonia distillation, filter 84 kilograms of filter residues obtained afterward, wherein contain basic copper carbon...

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Abstract

The invention discloses a disposal method of an organic silicon copper-containing waste catalyst, which has the advantages of less investment, low cost and environment protection and is simple for operation. The disposal method comprises the following steps of: immersing the organic copper-containing waste catalyst into an ammonium carbonate or ammonium hydrogen carbonate solution with the concentration of 1.2-2.0 molar / liter according to the solid to liquid ratio of 1 to 4-6; stirring continuously; immersing for 4-8 hours at 40-60 DEG C; carrying out solid-liquid separation to the immersed liquid; cleaning and drying the separated solid phase to form a silicon-containing raw material; carrying out negative pressure ammonia still to the separated ammonium copper solution; recycling ammonia and carbon dioxide generated in the process of the negative pressure ammonia still; filtering the solution obtained by carrying out the negative pressure ammonia still; filtering to obtain filter residues containing alkali copper carbonate and copper oxide; and calcining the filter residues for 2-4 hours at 200-400 DEG C to obtain a raw material of copper oxide used as a main component. The disposal method is suitable for comprehensive utilization of devitalization waste catalyst in the process of producing organic silicon monomer by using a direct method and particles discharged from a fluidized bed during gas-solid separation.

Description

technical field [0001] The invention belongs to the organic silicon industry to process the waste catalyst containing copper as a by-product so as to extract the copper and silicon for comprehensive utilization. Comprehensive utilization of particles discharged from gas-solid separation. Background technique [0002] With the rapid development of the organic silicon industry, more than a thousand kinds of organic silicon products are widely used in various fields of the national economy, and have become one of the fastest-growing varieties of new chemical materials. In the production process of organosilicon, the most important and most complicated part is the synthesis of monomers. Among various monomer synthesis methods, the "direct method" has simple process, high yield, no solvent, low risk and easy realization. Continuous large-scale production, so it has become the only industrial production method of organosilicon methyl monomer. Methylchlorosilane monomer is repres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02C01B33/021C01C1/02B09B3/00
Inventor 张春宇
Owner ZHANGJIAGANG KAINA INFORMATION TECH