An organochlorosilane saturated acid hydrolysis device and process

Abstract

The invention relates to the field of organosilicon, and discloses an organochlorosilane saturated acid hydrolysis device and a process. The device includes a hydrolysis unit, an acid washing unit and a dechlorination purification unit. The hydrolysis unit includes a hydrolysis tower, a pre-separator, a first phase separator and a first hydrolyzate intermediate tank; the pickling water washing unit includes a pickling tower, a second hydrolyzate intermediate tank, a water washing tower, a second phase separator and a third Hydrolyzate intermediate tank. The dechlorination purification unit includes a sand filter and a dechlorination rectification tower. The organic silicon saturated acid hydrolysis chlorine content is low (can be reduced to below 2ppm), can reduce the amount of by-product acid and water usage, can effectively reduce the viscosity of the hydrolyzate, and at the same time, the reaction temperature and pressure can be adjusted in a large range .

Description

technical field [0001] The invention relates to the field of organosilicon, in particular to an organochlorosilane saturated acid hydrolysis device and process. Background technique [0002] Organosilicon, that is, organosilicon compound, refers to a compound that contains Si-C bonds and at least one organic group is directly connected to a silicon atom. Linked compounds are also known as organosilicon compounds. Among them, the polysiloxane composed of silicon-oxygen bond (-Si-O-Si-) as the skeleton is the most numerous, the deepest researched and the most widely used class of organosilicon compounds, accounting for more than 90% of the total amount. . [0003] Silicone materials can be divided into: silane coupling agent (organosilicon chemical reagent), silicone oil (silicone grease, silicone emulsion, silicone surfactant), high temperature vulcanized silicone rubber, liquid silicone rubber, silicone resin, compound etc. Due to the unique structure of silicone, it com...

AI Technical Summary

Problems solved by technology

[0014] ①The chlorine content in the product hydrolyzate is relatively high, the viscosity is relatively high, and the relevant requirements cannot be met;

[0015] ②In the stage of washing the hydrolyzate, the original washing device needs a lot of water for washing, resulting in cost increase and waste of resources;

[0016] ③The water washing stage produces a large amount of by-product acid, which contains a small amount of siloxane, which is difficult to process and recycle

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