Unlock instant, AI-driven research and patent intelligence for your innovation.

A system and method for organochlorosilane hydrolysis and hydrochloric acid refining

An organochlorosilane and refining system technology, applied in chemical instruments and methods, inorganic chemistry, chlorine/hydrogen chloride, etc., can solve the problems affecting the synthesis process of methyl chloride, increasing the frequency of shutdown and maintenance, and reducing the yield of siloxane. Achieve the effect of alleviating the problem of equipment blockage, increasing the economic benefits of the enterprise, and prolonging the equipment cycle

Active Publication Date: 2021-06-15
SEDIN NINGBO ENG
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the HCl analysis process, part of the light oil phase will be taken out and follow the HCl gas to the HCl washing tower and HCl absorption tower. Over time, it will cause blockage of corresponding equipment and pipelines, which will increase the frequency of shutdown and maintenance, resulting in Lower siloxane yields and shorter start-up cycles
In addition, the presence of siloxane in HCl gas will also affect the synthesis process of methyl chloride

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A system and method for organochlorosilane hydrolysis and hydrochloric acid refining

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0033] Organogen hydrolyzate and hydrochloric acid purified system, such as figure 1 As shown, including the hydrolysis column 1, the primary phase separator 2, the secondary phase separator 3, the first hydrochloric acid purification column 4, a reduced tank 5, the second hydrochloric acid purification tower 6, the first extract tower 7, the second extraction The tower 8, the stripping tower 99 and the wire ring separation column 10, the side portion of the hydrolyzed column 1 is provided with a multi-segment feed port, the upper end of the hydrolyzed column 1 is connected to the feed port of the primary phase separator 2, level 1 The oil phase outlet of the phase separator 2 is connected to the feed port of the secondary phase separator 3, the top air phase outlet of the hydrolysis column 1, the gas phase outlet of the primary phase separator 2, and the air phase outlet of the secondary phase separator 3 are respectively connected. The top air phase outlet of the first hydrogera...

specific Embodiment 2

[0036] An organochlorosilane hydrolyzate and hydrochloric acid purification method, including the following steps:

[0037] (1) When 0-0.5 MpAg of the pressure-free diethylene dichlorosilane passes through the vaporizer 17 or after heating the liquid phase dimethyl dichloronilane, after heating through the heat exchanger 13, the segment is sent to the hydrolyzate tower 1 The hydrolysis reaction is performed, and the reaction temperature in the hydrolyzing tower 1 is controlled to 20-60 ° C, and the pressure is controlled to 0.5 MpAg, and the reaction is obtained to obtain a gas phase to the first condenser 11, and the reaction is obtained to obtain an oil phase to the primary phase separator. 2; the dimethyl dichlorosilane in the hydrolysis column 1 is used in a gas phase multi-segment feed, and the amount of dimethyl dichlorosily dichlorosily dichlorosilane is 40-90%, 40-5% and 20-5%;

[0038] (2) Control the primary phase separator 2 pressure to separate the oil and gas three-ph...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an organochlorosilane hydrolysis and hydrochloric acid refining system and method, which is characterized in that it comprises a hydrolysis tower, a primary phase separator, a secondary phase separator, a first hydrochloric acid purification tower, a decompression tank, and a second hydrochloric acid purification tower , the first extraction tower, the second extraction tower, the stripping tower and the wire-loop separation tower, the side of the hydrolysis tower is provided with multi-section feed ports, and the oil phase outlet at the upper end of the hydrolysis tower is connected to the feed port of the primary phase separator , the oil phase outlet of the primary phase separator is connected to the feed port of the secondary phase separator, the top gas phase outlet of the hydrolysis tower, the gas phase outlet of the primary phase separator and the gas phase outlet of the secondary phase separator are respectively connected to the first Condenser, the top gas phase outlet of the first condenser is connected with the feed port at the lower end of the first hydrochloric acid purification tower, the upper end of the first hydrochloric acid purification tower is provided with a fresh hydrochloric acid solution inlet, and the bottom oil phase outlet of the first hydrochloric acid purification tower, advantages The reaction conversion efficiency is high and the product purity is high.

Description

Technical field [0001] The present invention relates to an organochlorosilane hydrolyzate and hydrochloric acid purification system and method. Background technique [0002] Dimethyl dichlorosilanes were used through a series of hydrolyzed reactors during the silicone production process, and the organosiloxane is an important part of the silicone production process. The advantages and disadvantages of the process level of the process are directly related to the high quality of the silicone product and the high recovery efficiency of chlorine in the raw material, and excellent hydrolysis schemes can effectively reduce the production cost of the silicone product. [0003] After the conventional process dimethyl dichlorosilane passes through the pressurized hydrolysis, the resulting product is mainly a polysiloxane (hydrolyzate) and concentrated hydrochloric acid, and the hydrolyzed feed mode is liquid phase dimethyl chloride and hydrochloric acid. The hydrolyzate siloxane, the hydr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/04C08G77/06C01B7/07
CPCC01B7/0706C01B2210/0025C01B2210/0068C08G77/04C08G77/06
Inventor 李全李升大王宇光谷新春李国华袁小建彭永红厉相陶小钰李阳何欣蔚路怀良曹亮张志周剑李志柴新刚
Owner SEDIN NINGBO ENG