CN219502708U - Gas-liquid reaction device for continuous synthesis process of long carbon chain octyl trichlorosilane - Google Patents
Gas-liquid reaction device for continuous synthesis process of long carbon chain octyl trichlorosilane Download PDFInfo
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- CN219502708U CN219502708U CN202320929889.6U CN202320929889U CN219502708U CN 219502708 U CN219502708 U CN 219502708U CN 202320929889 U CN202320929889 U CN 202320929889U CN 219502708 U CN219502708 U CN 219502708U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a gas-liquid reaction device for a continuous synthesis process of long carbon chain octyl trichlorosilane, and relates to the technical field of gas-liquid reaction devices for synthesis processes. The gas-liquid reaction device of the continuous synthesis process of the long carbon chain octyl trichlorosilane comprises a venturi mixer, a reaction kettle, a packing tower and a circulating pump, wherein the reaction kettle is positioned below the packing tower and communicated with the packing tower; the upper end inlet of the reaction kettle is communicated with a venturi mixer, the lower end outlet of the reaction kettle is communicated with a circulating pump, the circulating pump is respectively communicated with the inlet of the venturi mixer and the inlet of the packing tower, and the venturi mixer is also connected with a silane feeding pipe. The utility model adopts a mode of combining a Venturi mixer and a tower kettle, increases the gas-liquid contact area, shortens the reaction time, realizes continuous reaction and continuous discharge, and improves the yield.
Description
Technical Field
The utility model relates to the technical field of gas-liquid reaction devices of synthesis processes, in particular to a gas-liquid reaction device of a continuous synthesis process of long carbon chain octyl trichlorosilane.
Background
In the prior art, a gas-liquid reaction device for synthesis reaction mostly uses a reaction kettle, but the production efficiency of a common reaction kettle is low, the reaction time is long, and in order to improve the production efficiency, the reaction kettle and a packing tower are assembled to form a tower kettle structure. Publication No. CN114478610A discloses a production process of vinyl silane, which adopts a tower kettle structure to carry out gas-liquid synthesis reaction, and the scheme aims at the production process of vinyl silane, so that the problem of discomfort exists in the process of preparing octyl trichlorosilane by using the vinyl silane. Specifically, in the continuous synthesis reaction of octene and trichlorosilane, intermittent dropwise addition production mode is adopted in production, because octene and trichlorosilane cannot be fully contacted and reacted, more isomers and other unknown substances are produced, the reaction process is slow, repeated kettle opening and discharging are needed, the cost is increased, and the yield of crude products is low.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a gas-liquid reaction device for a continuous synthesis process of long-carbon-chain octyl trichlorosilane, which increases the gas-liquid contact area, shortens the reaction time and improves the yield.
In order to achieve the technical purpose, the utility model adopts the following scheme: the gas-liquid reaction device of the continuous synthesis process of the long carbon chain octyl trichlorosilane comprises a venturi mixer, a reaction kettle, a packing tower and a circulating pump, wherein the reaction kettle is positioned below the packing tower and communicated with the packing tower; the upper end inlet of the reaction kettle is communicated with a venturi mixer, the lower end outlet of the reaction kettle is communicated with a circulating pump, the circulating pump is respectively communicated with the inlet of the venturi mixer and the inlet of the packing tower, and the venturi mixer is also connected with a silane feeding pipeline.
Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts a mode of combining a Venturi mixer and a tower kettle, increases the gas-liquid contact area, shortens the reaction time, realizes continuous reaction and continuous discharge, ensures the synthesis rate of crude products, omits the intermediate dead time, thereby improving the yield and easily realizing automatic control.
Further, the outside of the reaction kettle is provided with a jacket, an upper inlet of the jacket is connected with a steam pipeline, and a lower outlet of the jacket is connected with a steam condensing pipeline.
Further, the device also comprises a preheater and a raw material pipeline, wherein the raw material pipeline is communicated with the preheater, and the preheater is communicated with the inlet of the packed tower.
Drawings
FIG. 1 is a schematic diagram of a gas-liquid reaction device for a continuous synthesis process of long carbon chain octyl trichlorosilane provided by the embodiment of the utility model;
marked in the figure as: 1. a packed tower; 11. a tail gas transfer line; 2. a reaction kettle; 21. a steam line; 22. a steam condensate line; 3. a circulation pump; 31. an output line; 32. a circulation line; 4. a venturi mixer; 41. a silane feed line; 5. a preheater; 51. octene feed line.
Detailed Description
The present utility model will be described in detail with reference to the following embodiments for a full understanding of the objects, features and effects of the present utility model, but the present utility model is not limited thereto.
As shown in figure 1, the gas-liquid reaction device of the continuous synthesis process of long carbon chain octyl trichlorosilane provided by the utility model consists of a reaction kettle 2, a packing tower 1, a preheater 5, a venturi mixer 4, a circulating pump 3 and the like. The upper end of the reaction kettle 2 is communicated with the lower end of the packing tower 1, the top of the packing tower 1 is connected with a tail gas conveying pipeline 11, the upper part of the packing tower 1 is provided with feed inlets, one of the feed inlets is connected with an octene feed pipeline 51, and a preheater 5 is arranged on the octene feed pipeline 51; the other feed inlet is connected with a circulating pipeline 32, the circulating pipeline 32 is connected with a circulating pump 3, and the circulating pump 3 is also communicated with an outlet at the bottom of the reaction kettle 2 through a pipeline. The upper end of the reaction kettle 2 is also connected with a venturi mixer 4 through a pipeline, one inlet of the venturi mixer 4 is communicated with a circulating pipeline 32, and the other inlet of the venturi mixer 4 is communicated with a silane feeding pipeline 41. The recycle line 32 is also connected to the deesterification system via an output line 31.
The reaction kettle 2 is a jacketed reaction kettle, a jacket is fixedly connected to the outer side of the reaction kettle 2, the upper end of the jacket is connected with a steam pipeline 21, the lower end of the jacket is connected with a steam condensate pipeline 22, hot steam is conveyed into the jacket by the steam pipeline 21, and condensed steam condensate returns to a steam system through the steam condensate pipeline 22 to prepare the hot steam again.
Control valves are arranged on pipelines involved in the gas-liquid reaction device, so that the operation and the overhaul are convenient.
The working process comprises the following steps: the octene is preheated by a preheater and then enters the tower to contact and react with unreacted vaporized silane in the tower kettle, the trichlorosilane reacts with unreacted octene in the tower kettle, and the octene enters the kettle to be quickly separated, so that the long-time boiling process is reduced; unreacted trichlorosilane raw materials are extracted from the top of the tower, condensed and collected, and then continuously used as raw materials to return to venturi reaction, and crude products of tower kettle reaction are extracted and then enter a post-system for treatment.
The original process adopts a kettle type dropwise feeding mode, each kettle reacts for 10 to 12 hours, the synthesized crude product is about 3.5 tons, and the rectification purity of the product is more than 98 percent; the feeding amount of the prior art is 500 to 1000kg per hour, and the rectification purity of the product is about 98.5 percent.
Finally, it should be noted that: the above list is only a preferred embodiment of the present utility model, and it is understood that those skilled in the art can make modifications and variations thereto, and it is intended that the present utility model be construed as the scope of the appended claims and their equivalents.
Claims (2)
1. A gas-liquid reaction device of a continuous synthesis process of long carbon chain octyl trichlorosilane comprises a venturi mixer, a reaction kettle, a filler tower and a circulating pump, wherein the reaction kettle is positioned below the filler tower and communicated with the filler tower; the reactor is characterized in that an inlet at the upper end of the reactor is communicated with a venturi mixer, an outlet at the lower end of the reactor is communicated with a circulating pump, the circulating pump is respectively communicated with an inlet of the venturi mixer and an inlet of a packing tower, and the venturi mixer is also connected with a silane feeding pipeline;
the device also comprises a preheater and a raw material pipeline, wherein the raw material pipeline is communicated with the preheater, and the preheater is communicated with the inlet of the packed tower.
2. The gas-liquid reaction device for continuous synthesis process of long carbon chain octyl trichlorosilane according to claim 1, wherein a jacket is arranged on the outer side of the reaction kettle, a steam pipeline is connected to an upper inlet of the jacket, and a steam condensing pipeline is connected to a lower outlet of the jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320929889.6U CN219502708U (en) | 2023-04-23 | 2023-04-23 | Gas-liquid reaction device for continuous synthesis process of long carbon chain octyl trichlorosilane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320929889.6U CN219502708U (en) | 2023-04-23 | 2023-04-23 | Gas-liquid reaction device for continuous synthesis process of long carbon chain octyl trichlorosilane |
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| Publication Number | Publication Date |
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| CN219502708U true CN219502708U (en) | 2023-08-11 |
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| CN202320929889.6U Active CN219502708U (en) | 2023-04-23 | 2023-04-23 | Gas-liquid reaction device for continuous synthesis process of long carbon chain octyl trichlorosilane |
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| CN (1) | CN219502708U (en) |
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2023
- 2023-04-23 CN CN202320929889.6U patent/CN219502708U/en active Active
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