Silicone slurry residue treatment system and treatment technology thereof

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...

AI Technical Summary

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 and slag treatment system and treatment process, which can treat organic silicon waste pulp and slag Reduction, harmless treatment, and recovery of silane substances and valuable components such as copper and silicon in pulp residue

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