CN217221248U

CN217221248U - Trimethyl chlorosilane hydrolysis reaction device

Info

Publication number: CN217221248U
Application number: CN202123364557.8U
Authority: CN
Inventors: 初琳; 王凯辉; 李志刚
Original assignee: Xinyaqiang Silicon Chemistry Co ltd
Current assignee: Xinyaqiang Silicon Chemistry Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-19
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a trimethylchlorosilane hydrolysis reaction device, which comprises a premixer, a static mixer and a separator, wherein the inlet end of the premixer is communicated with a trimethylchlorosilane feeding pipe and a process water conveying pipe, the outlet end of the premixer is communicated with the static mixer through a pipeline, and the outlet end of the static mixer is communicated with the separator through a pipeline; the static mixer is arranged on the pipeline between the pre-mixer and the separator, which is beneficial to the rapid completion of the reaction, and in order to reduce the influence of the reaction heat release on the pipeline, the cooler is also arranged on the pipeline between the static mixer and the separator, so that the stability of the reaction temperature can be controlled; the whole process route is simple and practical, manual participation is not needed, and the capacity and the safety meet the requirements; and nitrogen is adopted for pressure maintaining in the separator, so that the safety risk of the production process caused by low flash point of the trimethyl hydrolysate is avoided.

Description

Trimethyl chlorosilane hydrolysis reaction device

Technical Field

The utility model relates to a trimethylchlorosilane field, concretely relates to trimethylchlorosilane hydrolysis reaction device.

Background

The traditional hexamethyldisiloxane production is mainly carried out in a kettle type intermittent mode, the operation condition is normal pressure, the main indexes of the product are unstable due to the limitation of process conditions, and the productivity is small. Hexamethyldisiloxane is an important silane functional auxiliary material, downstream application is wide, market demand is continuously expanded, and the current production process cannot meet the requirements of capacity and safety.

Therefore, how to solve the defects of the prior art is a subject of the present invention.

Disclosure of Invention

In order to solve the problem, the utility model discloses a trimethylchlorosilane hydrolysis reaction device.

In order to achieve the above purpose, the utility model provides a following technical scheme: a trimethylchlorosilane hydrolysis reaction device comprises a premixer, a static mixer and a separator, wherein the inlet end of the premixer is communicated with a trimethylchlorosilane feed pipe and a process water conveying pipe, the outlet end of the premixer is communicated with the static mixer through a pipeline, and the outlet end of the static mixer is communicated with the separator through a pipeline;

the lower layer separation outlet of the separator is communicated with the pre-mixer through a recovery pipeline, and the top of the separator is communicated with a nitrogen conveying pipeline.

In the scheme, the cooler is arranged on the pipeline between the static mixer and the separator.

In the above scheme, install the hydrolysis circulating pump on the pipeline between the premixer and the static mixer, carry the material after the internal mixing of premixer to the static mixer in through this hydrolysis circulating pump.

In the scheme, the nitrogen conveying pipeline is provided with the nitrogen regulating valve and the exhaust regulating valve in series.

In the scheme, flowmeters are respectively arranged on the trimethylchlorosilane feeding pipe and the process water conveying pipe.

In the scheme, the trimethylchlorosilane feeding pipe and the process water conveying pipe are respectively provided with a flow regulating valve.

The beneficial effects of the invention are as follows: the reaction device of the utility model is provided with the static mixer on the pipeline between the pre-mixer and the separator, which is favorable for the rapid completion of the reaction, and in order to reduce the influence of the reaction heat release on the pipeline, the cooler is arranged on the pipeline between the static mixer and the separator, which can control the stability of the reaction temperature; the whole process route is simple and practical, manual participation is not needed, and the capacity and the safety meet the requirements; and nitrogen is adopted for pressure maintaining in the separator, so that the safety risk of the production process caused by low flash point of the trimethyl hydrolysate is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the location of the nitrogen delivery line.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

Example (b): referring to fig. 1-2, a trimethylchlorosilane hydrolysis reaction device comprises a premixer 100, a static mixer 200 and a separator 300, wherein an inlet end of the premixer 100 is communicated with a trimethylchlorosilane feeding pipe 101 and a process water conveying pipe 102, the trimethylchlorosilane feeding pipe 101 and the process water conveying pipe 102 are both provided with a flowmeter and a flow regulating valve, the flowmeter is used for accurately metering materials, and the flow regulating valve is used for controlling the flow in the pipeline;

the outlet end of the pre-mixer 100 is communicated with the static mixer 200 through a pipeline, specifically, a hydrolysis circulating pump 500 is installed on the pipeline between the pre-mixer 100 and the static mixer 200, and the materials mixed in the pre-mixer 100 are conveyed into the static mixer 200 through the hydrolysis circulating pump 500;

the outlet end of the static mixer 200 is communicated with the separator 300 through a pipeline; a cooler 400 is installed on a pipeline between the static mixer 200 and the separator 300, and the cooler 400 is used for cooling the pipeline;

the lower layer separation outlet of the separator 300 is communicated with the pre-mixer 100 through a recovery pipeline 301, and the top of the separator 300 is communicated with a nitrogen conveying pipeline 302; the separator 300 is a conventional pressure-resistant container, and is kept standing for layering by utilizing the principle of different specific weights of materials;

trimethylchlorosilane feed pipe 101 and process water delivery pipe 102 are distributed to accurately measure trimethylchlorosilane and process water through a flowmeter and then enter premixer 100, the trimethylchlorosilane and the process water are delivered to separator 300 through hydrolysis circulating pump 500 after being primarily mixed, static mixer 200 is arranged on the pipeline between premixer 100 and separator 300, which is beneficial to the rapid completion of the reaction, and in order to reduce the influence of reaction heat release on the pipeline, cooler 400 is also arranged on the pipeline between static mixer 200 and separator 300, and the cooler 400 adopts the conventional cooler, so as to control the stability of the reaction temperature; the materials entering the separator 300 are mainly hexamethyldisiloxane and hydrochloric acid, and stay in the separator 300 for layering, the upper layer material enters the next process for refining treatment, and the lower layer material mainly containing hydrochloric acid returns to the premixer through a pipeline.

A nitrogen regulating valve and an exhaust regulating valve are installed on the nitrogen conveying pipeline 302 in series; the whole reaction device is protected by introducing nitrogen, and the nitrogen inlet regulating valve and the exhaust regulating valve are regulated in a cascade mode, so that the pressure of the reaction system is stably controlled within a required range.

It should be noted that the above-mentioned contents only illustrate the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and it will be apparent to those skilled in the art that several modifications and embellishments can be made without departing from the principle of the present invention, and these modifications and embellishments fall within the protection scope of the claims of the present invention.

Claims

1. A trimethylchlorosilane hydrolysis reaction device is characterized in that: the device comprises a premixer (100), a static mixer (200) and a separator (300), wherein the inlet end of the premixer (100) is communicated with a trimethylchlorosilane feeding pipe (101) and a process water conveying pipe (102), the outlet end of the premixer (100) is communicated with the static mixer (200) through a pipeline, and the outlet end of the static mixer (200) is communicated with the separator (300) through a pipeline;

the lower layer separation outlet of the separator (300) is communicated with the pre-mixer (100) through a recovery pipeline (301), and the top of the separator (300) is communicated with a nitrogen conveying pipeline (302).

2. The trimethylchlorosilane hydrolysis reaction device as claimed in claim 1, wherein the reaction device comprises: a cooler (400) is installed on the pipeline between the static mixer (200) and the separator (300).

3. The trimethylchlorosilane hydrolysis reaction device as claimed in claim 1, wherein the reaction device comprises: a hydrolysis circulating pump (500) is installed on a pipeline between the premixer (100) and the static mixer (200), and the material mixed in the premixer (100) is conveyed into the static mixer (200) through the hydrolysis circulating pump (500).

4. The trimethylchlorosilane hydrolysis reaction device as claimed in claim 1, wherein the reaction device comprises: and a nitrogen regulating valve and an exhaust regulating valve are installed on the nitrogen conveying pipeline (302) in series.

5. The trimethylchlorosilane hydrolysis reaction device as claimed in claim 1, wherein the reaction device comprises: flow meters are arranged on the trimethylchlorosilane feeding pipe (101) and the process water conveying pipe (102).

6. The trimethylchlorosilane hydrolysis reaction device as claimed in claim 5, wherein the reaction device comprises: the trimethylchlorosilane feed pipe (101) and the process water delivery pipe (102) are respectively provided with a flow regulating valve.