Silicone slurry residue treatment system and treatment technology thereof

A processing system and organosilicon technology, applied in the direction of organic chemistry, process efficiency improvement, inorganic chemistry, etc., can solve the problems of secondary pollution, effective resources, waste, etc., and achieve the effect of saving investment, improving utilization efficiency, and mild operating conditions

Inactive Publication Date: 2019-06-18
TIANJIN UNIV +1
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Problems solved by technology

[0008] Aiming at technical problems such as secondary pollution and waste of effective resources in the existing organic silicon pulp and slag treatment process, the present invention discloses an effective organic silicon pulp an

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  • Silicone slurry residue treatment system and treatment technology thereof

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[0034] The present invention will be further described in detail below through specific embodiments. The following embodiments may enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention in any way.

[0035] Such as figure 1 As shown, this embodiment discloses for the first time an organic silicon slurry treatment system integrating evaporation, rectification, cracking and other processes, which mainly includes slurry tank 1, azeotropic solvent tank 2, mixing tank 3, azeotropic evaporation kettle 4. Product distillation tower 12, high boiling cracking device 13, residue filter 5, solid drying tower 6, waste powder deactivation device 8.

[0036] The silicone slurry tank 1 and the azeotropic solvent tank 2 are respectively connected to the two inlets of the mixing tank 3. The mixing tank 3 is used to store the silicone slurry raw materials and the azeotropic solvent, and is also used to stir the silicone slurry...

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Abstract

The invention belongs to the technical field of waste treatment, and discloses a silicone slurry residue treatment system and a treatment technology thereof. The inlet of an azeotropic evaporation kettle device is connected with a mixing tank for mixing a silicone slurry residue source and an azeotropic solvent, a silane substance in the slurry residue is azeotropically evaporated together with the solvent, the obtained evaporated product enters an evaporated product rectification tower, a silicone high-boiling liquid phase monomer product is obtained from the bottom of the tower, and is sentinto a high-boiling cracking device to recover effective components, and an azeotropic solvent obtained from the top of the tower can be reused; and a residual liquid in the azeotropic evaporation kettle device, is filtered and dried, and then enters a waste powder deactivation device to extract and recover valuable components such as copper and silicon. The silicone slurry residue which is difficult to treat is evaporated and rectified to recover the valuable monomers and produce high-boiling methylchlorosilane, so the useful high-boiling methylchlorosilane in the slurry residue is recycled,the reduction treatment of the silicone slurry residue is achieved, the production cost is greatly reduced, and good economic benefits are obtained.

Description

technical field [0001] The invention belongs to the technical field of waste treatment, and in particular relates to a treatment system and a treatment process for organic silicon pulp and slag. Background technique [0002] Organosilicon waste slurry refers to a fluid liquid-solid mixture produced during the synthesis of methyl chlorosilane monomer, mainly composed of high boilers with a boiling point exceeding 70°C and a small amount of fine silicon powder and copper powder. Organosilicon slurry residues are hazardous wastes. The high boiling substances in its composition are flammable, explosive, and highly volatile. If exposed to the air, they will burn or react with air to form strong acid mist or strong acid liquid. In addition, the silicon powder in the pulp residue is also a flammable substance. If the copper powder is not recycled, it will easily pollute water resources. If this type of organic silicon waste pulp residue is discharged directly, it will cause serious...

Claims

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Application Information

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IPC IPC(8): C07F7/12C01B33/037C22B15/14
CPCY02P10/20
Inventor 张东辉汪亚燕何东荣张殿宇赵昕
Owner TIANJIN UNIV
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