CN214915913U - Gas-liquid continuous reaction device for producing vinyl silane - Google Patents
Gas-liquid continuous reaction device for producing vinyl silane Download PDFInfo
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- CN214915913U CN214915913U CN202121401398.1U CN202121401398U CN214915913U CN 214915913 U CN214915913 U CN 214915913U CN 202121401398 U CN202121401398 U CN 202121401398U CN 214915913 U CN214915913 U CN 214915913U
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Abstract
The utility model discloses a gas-liquid continuous reaction device for producing vinyl silane relates to vinyl silane's apparatus for producing field. The device comprises a first packed tower, a reaction kettle, a circulating pump, a Venturi mixer, a solvent recovery kettle, a second packed tower and a crude product receiving tank, wherein the top of the first packed tower is connected with the Venturi mixer, and the lower end of the Venturi mixer is connected with the upper port of the reaction kettle; the upper port of the Venturi mixer is connected with the lower port of the solvent recovery kettle, the upper end of the solvent recovery kettle is connected with a second packed tower, the middle part of the second packed tower is connected with a circulating pump, and the circulating pump is connected with the lower port of the reaction kettle; the second packed tower is connected with a crude product receiving tank. The device adopts a venturi and tower kettle combination mode to realize continuous feeding and discharging and reduce secondary participation of products in reaction; the circulation of acetylene gas is realized through the venturi, the flow rate of the acetylene in the tower is improved, and the circulation frequency of the gas in the device is increased, so that the gas-liquid contact area is increased, and the reaction time is shortened.
Description
Technical Field
The utility model relates to a production device field of vinyl silane especially relates to a gas-liquid continuous reaction device for producing vinyl silane.
Background
The production raw materials of the vinyl silane are silane and acetylene, at present, a tower type reaction is mostly adopted, a reaction solvent and the raw materials are added into a kettle at one time and then the acetylene is introduced for slow reaction, and the product is transferred to the next procedure until the raw materials are completely consumed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a gas-liquid continuous reaction device for producing vinyl silane realizes the continuous reaction and discharges the material in succession, reduces the product side reaction and takes place, shortens reaction time.
In order to realize the technical purpose, the utility model adopts the following scheme: the gas-liquid continuous reaction device for producing the vinyl silane comprises a first packed tower, a reaction kettle, a circulating pump, a Venturi mixer, a solvent recovery kettle, a second packed tower, a condenser and a crude product receiving tank, wherein the lower end of the first packed tower is fixedly connected with the upper end of the reaction kettle; the side surface of the top of the first packed tower is connected with a venturi mixer, and the lower outlet of the venturi mixer is connected with the upper port of the reaction kettle; the upper port of the Venturi mixer is connected with the lower port of the solvent recovery kettle, the upper end of the solvent recovery kettle is fixedly connected with a second packed tower, the middle part of the second packed tower is connected with a circulating pump, and the inlet of the circulating pump is connected with the lower port of the reaction kettle; the top of the second packed tower is connected with a condenser, and the condenser is connected with a crude product receiving tank.
Compared with the prior art, the beneficial effects of the utility model reside in that: the device adopts a mode of combining a Venturi and a packed tower kettle, realizes continuous feeding and discharging, reduces secondary participation reaction of products, and further reduces the generation of high-boiling-point substances; through venturi mixer gas-liquid mixture, realize acetylene gas circulation, improve the velocity of flow of acetylene in the tower, increase the circulation number of times of gas in the device to increase gas-liquid area of contact, shorten reaction time.
Furthermore, the circulating pump is provided with three outlets, one outlet is connected with the middle part of the packed tower, the other outlet is connected with the top of the first packed tower, and the other outlet is connected with the upper port of the venturi mixer.
Further, the middle part of first filled tower and/or reation kettle's upper end is connected with the acetylene inlet pipe, and first filled tower top of the tower is provided with the feeding shower nozzle, and the feeding shower nozzle outer end is connected with the silane inlet pipe, and the feeding shower nozzle makes the better dispersion of silane liquid, increase and acetylene gas's area of contact, and the reaction is more abundant.
Further, a discharge pump is connected to an outlet at the lower end of the crude product receiving tank.
Drawings
FIG. 1 is a schematic structural diagram of a gas-liquid continuous reaction device for producing ethynyl silane according to an embodiment of the present invention;
labeled as: 1. a first packed column; 2. a reaction kettle; 3. a venturi mixer; 4. a circulation pump; 5. a solvent delivery pump; 6. a solvent recovery kettle; 7. a second packed column; 8. a condenser; 9. a crude product receiving tank; 10. a discharge pump; 11. a feed nozzle; 12. a silane feed pipe; 13. acetylene feed pipe.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and functions of the present invention, but the present invention is not limited thereto.
As shown in figure 1, the utility model provides a pair of a gas-liquid continuous reaction device for producing vinyl silane comprises first packed tower 1, reation kettle 2, circulating pump 4, venturi mixer 3, solvent recovery cauldron 6, second packed tower 7, condenser 8 and crude product receiving tank 9. The lower extreme and 2 upper ends fixed connection of reation kettle of first packed tower 1, the 1 top of the tower lateral wall of first packed tower pass through the pipeline and link to each other with 3 lateral wall imports of venturi mixer, and the lower extreme export of venturi mixer 3 is connected with reation kettle 2's last port, forms the acetylene gas return circuit. The lower port of the reaction kettle 2 is connected with the middle part of a second packed tower 7 through a pipeline and a circulating pump 4. The circulating pump 4 is provided with three outlets (a first outlet, a second outlet and a third outlet), wherein the first outlet is connected with the middle part of the second packed tower 7 through a pipeline, the second outlet is connected with the upper end of the top of the first packed tower 1 through a pipeline, the third outlet is connected with the upper end inlet of the venturi mixer 3 through a pipeline, and a loop is adjusted according to the product condition. The upper end import of venturi mixer 3 still links to each other through pipeline and solvent delivery pump 5 and solvent recovery cauldron 6's lower extreme export, solvent recovery cauldron 6's upper end and 7 lower extremes fixed connection of second packed tower, and the upper end of second packed tower 7 passes through the pipeline and links to each other with condenser 8, and condenser 8 links to each other with crude product receiving tank 9, and a discharge pump 10 is connected to the port under crude product receiving tank 9, takes the product out reaction system.
The inside feed nozzle 11 that is fixed with in 1 top of the tower of first filled tower, the outer port of feed nozzle 11 is connected with silane inlet pipe 12, makes the increase of silane liquid dispersion area through feed nozzle 11, and then has increased with the area of contact of acetylene gas, and the reaction is more abundant. The middle part of the first packed tower 1 and/or the upper end of the reaction kettle 2 is connected with an acetylene feeding pipe 13.
The working process is as follows: the reaction raw materials are silane and acetylene gas, a carrier solvent which does not participate in the reaction needs to be added in the reaction, and the carrier solvent is recycled through a second packed tower 7 and a solvent recovery kettle 6. Silane continuously enters the first packed tower 1 from the top of the first packed tower 1, and acetylene enters the first packed tower 1 from the middle part or the tower kettle of the first packed tower 1 (adjusted according to the content of products in the kettle). Using a carrier solvent as a circulating liquid in the first packed tower 1 and the reaction kettle 2, gradually adding silane and acetylene, when the product content in the carrier solvent reaches a certain amount after reacting for a certain time, conveying the product to the second packed tower 7 and the solvent recovery kettle 6 by using the circulating pump 4 to separate the carrier solvent from a crude product, returning the separated carrier solvent to the reaction kettle 2 through the Venturi mixer 3 to continue to participate in the reaction, and condensing the crude product through the condenser 8 to flow into the crude product receiving tank 9.
The venturi mixer 3 is used for returning the solvent and the acetylene gas to the system, and the acetylene in the system is lifted to effectively contact and react with the materials through negative pressure (the negative pressure is generated on the side surface when the first outlet is circulated).
The device adopts a mode of combining a Venturi and a packed tower kettle, realizes continuous feeding and discharging, reduces secondary participation reaction of products, and further reduces the generation of high-boiling-point substances; through 3 gas-liquid mixtures of venturi mixer, realize acetylene gas circulation, improve the velocity of flow of acetylene in the tower, increase the circulation number of times of gas in the device to increase gas-liquid area of contact, shorten reaction time.
Finally, it is noted that: the preferred embodiments of the present invention have been shown and described, and it will be understood that modifications and variations may be made by those skilled in the art without departing from the scope of the invention.
Claims (4)
1. A gas-liquid continuous reaction device for producing vinyl silane comprises a first packed tower, a reaction kettle, a circulating pump, a Venturi mixer, a solvent recovery kettle, a second packed tower, a condenser and a crude product receiving tank, wherein the lower end of the first packed tower is fixedly connected with the upper end of the reaction kettle; the device is characterized in that the side surface of the top of the first packed tower is connected with a Venturi mixer, and the lower outlet of the Venturi mixer is connected with the upper port of a reaction kettle; the upper port of the Venturi mixer is connected with the lower port of the solvent recovery kettle, the upper end of the solvent recovery kettle is fixedly connected with a second packed tower, the middle part of the second packed tower is connected with a circulating pump, and the inlet of the circulating pump is connected with the lower port of the reaction kettle; the top of the second packed tower is connected with a condenser, and the condenser is connected with a crude product receiving tank.
2. The gas-liquid continuous reaction apparatus for producing vinylsilane according to claim 1, wherein the circulating pump has three outlets, one of the outlets is connected to the middle of the packed tower, the other outlet is connected to the top of the first packed tower, and the other outlet is connected to the upper port of the venturi mixer.
3. The gas-liquid continuous reaction device for producing vinylsilane according to claim 1, wherein an acetylene feeding pipe is connected to the middle part of the first packed tower and/or the upper end of the reaction kettle, a feeding nozzle is arranged at the top of the first packed tower, and a silane feeding pipe is connected to the outer end of the feeding nozzle.
4. The continuous gas-liquid reaction apparatus for producing vinylsilane according to claim 1, wherein a discharge pump is connected to an outlet at the lower end of the crude product receiving tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401398.1U CN214915913U (en) | 2021-06-23 | 2021-06-23 | Gas-liquid continuous reaction device for producing vinyl silane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401398.1U CN214915913U (en) | 2021-06-23 | 2021-06-23 | Gas-liquid continuous reaction device for producing vinyl silane |
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| CN214915913U true CN214915913U (en) | 2021-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409694A (en) * | 2022-03-11 | 2022-04-29 | 新疆晶硕新材料有限公司 | Method and device for preparing vinyl trichlorosilane |
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2021
- 2021-06-23 CN CN202121401398.1U patent/CN214915913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409694A (en) * | 2022-03-11 | 2022-04-29 | 新疆晶硕新材料有限公司 | Method and device for preparing vinyl trichlorosilane |
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