CN211338823U - Cold hydrogenation dust removal slag slurry receiving device - Google Patents
Cold hydrogenation dust removal slag slurry receiving device Download PDFInfo
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- CN211338823U CN211338823U CN201921626004.5U CN201921626004U CN211338823U CN 211338823 U CN211338823 U CN 211338823U CN 201921626004 U CN201921626004 U CN 201921626004U CN 211338823 U CN211338823 U CN 211338823U
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Abstract
The utility model discloses a cold hydrogenation dust removal slag slurry receiving arrangement, including receiving tank, receiving tank's upper portion is convex, receiving tank's upper portion center is provided with the receiver tube, the right side of receiver tube is provided with the level measurement mounting bracket, the left side of receiver tube is provided with the gas circulation pipe, receiving tank's bottom center is provided with the slag slurry discharge pipe, the left side of gas circulation pipe is connected with the outlet duct, the outlet duct is the downward slope form, the below of outlet duct is provided with the gas temporary storage, the right side of gas temporary storage is provided with the pump gas device through the valve, the right side of pump gas device is provided with the intake pipe, the intake pipe keeps sealed through sealing device and receiving tank, the intake pipe stretches into receiving tank's inside, the intake pipe is the spiral inside receiving tank, be provided with; the utility model has the advantages of automatic balance, reduction system trouble.
Description
Technical Field
The utility model belongs to the technical field of polycrystalline silicon production facility, concretely relates to cold hydrogenation dust removal sediment thick liquid receiving arrangement.
Background
The current mainstream technical route for producing the polycrystalline silicon is to improve siemens, wherein about 20 kg of silicon tetrachloride is produced as a byproduct when one kg of polycrystalline silicon is produced, and the silicon tetrachloride as the byproduct is mainly converted by adopting a silicon tetrachloride cold hydrogenation technology; the conversion process is mainly carried out in a cold hydrogenation reactor, silicon powder is added into the reactor while the conversion is carried out, and the silicon powder is continuously reduced and carried out by reaction gas along with the reaction; the subsequent system generally adopts wet dedusting to wash the silicon powder, and the formed liquid slurry needs to be discharged out of the system periodically, otherwise, the washing effect is reduced, and the system is blocked.
The operating pressure of the cold hydrogenation reaction and washing system is about 2-3.5 MPaG generally, the pressure of the slag slurry receiving system is 0-0.5 MpaG generally, and the pressure difference between the two is 2-3 MPaG; at present, the slurry is generally discharged by arranging a disc valve in a washing system and opening the disc valve regularly, but because the slurry contains a large amount of silicon powder solids, the flow rate of the slurry in the valve and a pipeline is very high under the condition of large pressure difference, the superfine silicon powder and chloride crystals in the slurry easily cause the condition that the valve is not tightly sealed or even can not be closed under the condition of high-speed flow, once the valve is not tightly sealed or can not be closed, a large amount of chlorosilane liquid in a wet dust removal system is lost, so that the system is stopped; in order to solve the above problems, it is necessary to develop a cold hydrogenation dedusting slurry receiving device which can automatically balance and reduce system failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a cold hydrogenation dedusting slurry receiving device which has the advantages of automatic balance and system fault reduction.
The purpose of the utility model is realized like this: the utility model provides a cold hydrogenation dust removal sediment thick liquid receiving arrangement, including receiving the jar, the upper portion of receiving the jar is convex, the upper portion center of receiving the jar is provided with the receiver tube, the right side of receiver tube is provided with the level measurement mounting bracket, the left side of receiver tube is provided with the gas circulation pipe, the bottom center of receiving the jar is provided with the sediment thick liquid delivery pipe, the left side of gas circulation pipe is connected with the outlet duct, the outlet duct is the downward sloping form, the below of outlet duct is provided with the gas temporary storage device, the right side of gas temporary storage device is provided with the pump gas device through the valve, the right side of pump gas device is provided with the intake pipe, the intake pipe passes through sealing device and receives jar and keeps sealed, the intake pipe stretches into the inside of receiving.
Further, a valve is arranged at the upper part of the receiving pipe, and a temperature measuring device and a pressure measuring device are arranged at the upper part of the receiving tank.
Furthermore, a pressure relief valve is arranged on the gas circulating pipe.
Furthermore, the included angle between the air outlet pipe and the horizontal plane is 15-85 degrees.
Further, the gas buffer may be the same or similar to the receiving tank.
Further, the air pumping device takes air from the air temporary storage and pumps the air into the receiving tank.
Further, the air inlet pipe is spirally downward in the receiving tank, and the end part of the air inlet pipe is provided with a filtering device.
Further, the air pumping device and the liquid level measuring meter are electrically connected with an external control circuit through leads.
Since the technical scheme is used, the beneficial effects of the utility model are that:
(1) the pressure in the receiving tank is kept consistent with the pressure of a cold hydrogenation system when the receiving tank receives the slurry through the receiving tank, the gas temporary storage device and the gas pumping device, so that the slurry automatically flows into the receiving tank in a gravity mode, and meanwhile, the gas in the receiving tank is automatically discharged to the gas temporary storage device when the slurry flows into the receiving tank through the pressure relief valve arranged on the gas circulating pipe; when a certain amount of slurry is stored in the receiving tank, the slurry discharge pipe is opened, and only a small amount of gas exists in the receiving tank, so that the slurry is conveniently discharged, and meanwhile, the condition of internal gas pressure reduction caused by slurry discharge is filled up through the gas pumping device, so that the pressure balance of the gas and the slurry in the receiving tank is kept;
(2) the gas inlet pipe is arranged, so that when the slag slurry is discharged, gas drives the slag slurry to spin, the slag slurry is prevented from being adhered to the inner wall of the receiving tank, the discharge of the slag slurry is facilitated, meanwhile, the gas outlet pipe is arranged in a downward inclined shape, the backflow caused by the condensation of the inner wall of the wall pipe due to the temperature change is prevented, and the gas outlet pipe is prevented from being blocked;
(3) through the liquid level meter that sets up, when making the sediment thick liquid in the receiving tank reach the volume of setting for, start pump gas device and lower part sediment thick liquid delivery pipe, make entire system ability normal operating.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
In the figure: 1. the device comprises a receiving tank 11, a receiving pipe 12, a liquid level measuring mounting frame 13, a gas circulating pipe 14, a slurry discharging pipe 2, a gas outlet pipe 3, a gas temporary storage 4, a gas pumping device 5, a gas inlet pipe 6, a sealing device 7 and a liquid level measuring meter.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, a cold hydrogenation dedusting slag slurry receiving device comprises a receiving tank 1, wherein the upper part of the receiving tank 1 is arc-shaped, a receiving pipe 11 is arranged at the center of the upper part of the receiving tank 1, a valve is arranged at the upper part of the receiving pipe 11, a temperature measuring device and a pressure measuring device are arranged at the upper part of the receiving tank 1 and used for measuring the temperature and the pressure inside the receiving tank 1, a liquid level measuring mounting frame 12 is arranged at the right side of the receiving pipe 11, a gas circulating pipe 13 is arranged at the left side of the receiving pipe 11, and a pressure overflow valve is arranged on the gas circulating pipe 13 and is set to be the same as the system pressure under the condition that the gas pressure of a cold hydrogenation system is measured, so that when the gas pressure in the receiving tank 1 is too high, the gas is automatically discharged, and the pressure of the receiving; a slurry discharge pipe 14 is arranged at the center of the bottom of the receiving tank 1, an air outlet pipe 2 is connected to the left side of an air circulation pipe 13, the air outlet pipe 2 is inclined downwards, the included angle between the air outlet pipe 2 and the horizontal plane is 15-85 degrees, the blocking of the inner wall of the air outlet pipe 2 caused by the separation of water from the inner wall of the air outlet pipe 2 due to condensation and the like is prevented, an air temporary storage 3 is arranged below the air outlet pipe 2, the air temporary storage 3 adopts a tank which is the same as or similar to the receiving tank 1, an air pumping device 4 is arranged on the right side of the air temporary storage 3 through a valve, the air pumping device 4 is used for taking air from the air temporary storage 3 and pumping the air into the; the right side of pump gas device 4 is provided with intake pipe 5, intake pipe 5 passes through sealing device 6 and keeps sealed with receiving jar 1, intake pipe 5 stretches into the inside of receiving jar 1, intake pipe 5 is the downward shape of spiral inside receiving jar 1, its tip is provided with filter equipment, make the gas that gets into through intake pipe 5, can drive the sediment thick liquid and flow with rotatory mode, prevent that the sediment thick liquid from condensing at receiving jar 1 inner wall, and accelerate sediment thick liquid exhaust speed, be provided with liquid level meter 7 on the level measurement mounting bracket 12.
The pumping device 4 and the liquid level meter 7 are electrically connected with an external control circuit through leads.
When the utility model is used, firstly, the temperature and the pressure in the receiving tank 1 are measured by arranging the temperature measuring device and the pressure measuring device on the upper part of the receiving tank 1, and the pressure of the cold hydrogenation system is the same as the threshold value of the overflow valve, so that the slag slurry enters the receiving tank 1 through the receiving pipe 11; then, as the slurry enters the receiving tank 1, the pressure inside the receiving tank 1 gradually increases, and at the moment, the excess gas is discharged into the gas temporary storage 3 through the gas circulation pipe 13 and the gas outlet pipe 2 by the pressure relief valve until the slurry can be detected by the liquid level meter 7; finally, the valve on the receiving pipe 11 is closed, at this time, the slag slurry occupies most of the volume in the receiving tank 1, so that the gas amount in the receiving tank 1 is less at this time, the slag slurry is discharged in a normal pressure mode by opening the valve on the slag slurry discharge pipe 14, at this time, a small amount of gas in the receiving tank 1 can play a role in accelerating discharge of the slag slurry, the gas in the gas temporary storage 3 flows into the receiving tank 1 through the gas pumping device 4, and the slag slurry is discharged in a spiral downward mode under the action of the spiral downward gas inlet pipe 5, so that the slag slurry discharge speed is increased.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, and all such modifications and equivalent substitutions are intended to be encompassed by the scope of the following claims.
Claims (8)
1. The utility model provides a cold hydrogenation dust removal sediment thick liquid receiving arrangement, includes receiving jar (1), its characterized in that: the upper part of the receiving tank (1) is arc-shaped, the center of the upper part of the receiving tank (1) is provided with a receiving pipe (11), the right side of the receiving pipe (11) is provided with a liquid level measurement mounting frame (12), the left side of the receiving pipe (11) is provided with a gas circulation pipe (13), the center of the bottom of the receiving tank (1) is provided with a slurry discharge pipe (14), the left side of the gas circulation pipe (13) is connected with a gas outlet pipe (2), the gas outlet pipe (2) is downward inclined, a gas temporary storage device (3) is arranged below the gas outlet pipe (2), the right side of the gas temporary storage device (3) is provided with a gas pumping device (4) through a valve, the right side of the gas pumping device (4) is provided with a gas inlet pipe (5), the gas inlet pipe (5) is kept sealed with the receiving tank (1) through a sealing device (6), the gas inlet pipe (, a liquid level measuring meter (7) is arranged on the liquid level measuring mounting rack (12).
2. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the upper part of the receiving pipe (11) is provided with a valve, and the upper part of the receiving tank (1) is provided with a temperature measuring device and a pressure measuring device.
3. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the gas circulating pipe (13) is provided with a pressure relief valve.
4. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the angle between the air outlet pipe (2) and the horizontal plane is 15-85 degrees.
5. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the gas temporary storage device (3) adopts a tank which is the same as or similar to the receiving tank (1).
6. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the air pumping device (4) takes air from the air temporary storage device (3) and pumps the air into the receiving tank (1).
7. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the air inlet pipe (5) is spirally downward in the receiving tank (1), and the end part of the air inlet pipe is provided with a filtering device.
8. The cold hydrogenation dedusting slurry receiving apparatus as set forth in claim 1, wherein: the air pumping device (4) and the liquid level measuring meter (7) are electrically connected with an external control circuit through leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626004.5U CN211338823U (en) | 2019-09-27 | 2019-09-27 | Cold hydrogenation dust removal slag slurry receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626004.5U CN211338823U (en) | 2019-09-27 | 2019-09-27 | Cold hydrogenation dust removal slag slurry receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211338823U true CN211338823U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921626004.5U Active CN211338823U (en) | 2019-09-27 | 2019-09-27 | Cold hydrogenation dust removal slag slurry receiving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211338823U (en) |
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2019
- 2019-09-27 CN CN201921626004.5U patent/CN211338823U/en active Active
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