CN217962561U - Silicon powder removing system for hydrogenation reaction - Google Patents
Silicon powder removing system for hydrogenation reaction Download PDFInfo
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- CN217962561U CN217962561U CN202222234865.7U CN202222234865U CN217962561U CN 217962561 U CN217962561 U CN 217962561U CN 202222234865 U CN202222234865 U CN 202222234865U CN 217962561 U CN217962561 U CN 217962561U
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Abstract
The utility model provides a hydrogenation removes silica flour system includes hydrogenation ware, multistage heat transfer system, online desiliconization powder device, useless touch body processing apparatus, the gas outlet at hydrogenation ware's top passes through the pipe connection with the air inlet of the originated tube side of multistage heat transfer system, and the gas outlet of the tube side of multistage heat transfer system passes through the pipe connection with the air inlet of online desiliconization powder device, and the gas outlet that removes silica flour device online passes through the pipeline intercommunication with the air inlet of the tube side of multistage heat transfer system's final section, and the discharge gate that removes the bottom of silica flour device online passes through the pipeline intercommunication with the feed inlet of useless touch body processing apparatus, and hydrogenation ware still is equipped with useless touch body export, and useless touch body export still passes through the pipeline intercommunication with the feed inlet of useless touch body processing apparatus. The hydrogenation removes silica flour system and removes silica flour in the gas that goes out of hydrogenation ware through setting up online silica flour device and detach, prevents that silica flour from blockking up the pipeline, and the silica flour that filters out simultaneously can the retrieval and utilization, reduces the use of silica flour.
Description
Technical Field
The utility model relates to a polycrystalline silicon production technical field especially relates to a hydrogenation removes silicon powder system.
Background
In the cold hydrogenation process, silicon tetrachloride, hydrogen, silicon powder, hydrogen chloride and the like react in a hydrogenation reactor to generate trichlorosilane, and after condensation separation and rectification purification are carried out on gaseous products, trichlorosilane is reduced to generate polycrystalline silicon. After the hydrogenation reaction, the product is subjected to impurity removal from the top of the hydrogenation reactor through a series of processes. Among them, the product contains a lot of silica powder, and if the silica powder is not removed in time, the problem of pipe blockage will be caused, and the usage amount of the silica powder will be increased.
Disclosure of Invention
In view of the above, it is desirable to provide a system for removing silicon powder by hydrogenation that can effectively remove silicon powder from the product after hydrogenation.
The utility model provides a hydrogenation removes silica flour system includes hydrogenation reactor, multistage heat transfer system, online desiliconization powder device, useless touch body processing apparatus, the gas outlet at hydrogenation reactor's top passes through the pipe connection with the air inlet of the originated tube side of multistage heat transfer system, and the gas outlet of the tube side of multistage heat transfer system's middle section passes through the pipe connection with the air inlet of online desiliconization powder device, and the gas outlet that removes silica flour device online passes through the pipeline intercommunication with the air inlet of the tube side of multistage heat transfer system's final section, and the discharge gate that removes the bottom of silica flour device online passes through the pipeline intercommunication with the feed inlet of useless touch body processing apparatus, and hydrogenation reactor still is equipped with useless touch body export, and useless touch body export still passes through the pipeline intercommunication with the feed inlet of useless touch body processing apparatus.
Preferably, the multistage heat exchange system comprises a first-stage heat exchanger, a second-stage heat exchanger, a third-stage heat exchanger and a fourth-stage heat exchanger, wherein the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger are connected in series, an air inlet of a tube side of the first-stage heat exchanger is connected with an air outlet at the top of the hydrogenation reactor through a pipeline, an air outlet of a tube side of the third-stage heat exchanger is communicated with an air inlet of the online silicon powder removing device through a pipeline, and an air outlet of the online silicon powder removing device is communicated with an air inlet of a tube side of the fourth-stage heat exchanger through a pipeline.
Preferably, the online silicon powder removing device comprises a first online silicon powder filter, a second online silicon powder filter and a silicon powder collecting tank, wherein the air inlets of the first online silicon powder filter and the second online silicon powder filter are communicated with the air outlet of the tube pass of the tertiary heat exchanger through a pipeline, the air outlets of the first online silicon powder filter and the second online silicon powder filter are communicated with the air inlet of the tube pass of the quaternary heat exchanger through a pipeline, the bottoms of the first online silicon powder filter and the second online silicon powder filter are communicated with the feed inlet of the silicon powder collecting tank through a pipeline, and the discharge outlet of the silicon powder collecting tank is communicated with the feed inlet of the waste contact body processing device through a pipeline.
Preferably, the first online silicon powder filter and the second online silicon powder filter have the same structure, the first online silicon powder filter comprises a sealing shell, a partition plate, a metal filter screen, a nylon filter screen and a metal support frame, the upper end of the sealing shell is hemispherical, the upper end of the sealing shell is provided with an air outlet, the middle end of the sealing shell is cylindrical, the middle end of the sealing shell is provided with an air inlet, the lower end of the sealing shell is conical, the bottom of the sealing shell is provided with a discharge outlet, the partition plate is arranged between the upper end and the middle end of the sealing shell, the partition plate is provided with a plurality of through holes, the metal filter screen is fixedly connected with the partition plate, the nylon filter screen is positioned on the inner side of the metal filter screen and connected with the metal filter screen in a sleeved mode, the metal support frame is positioned on the inner side of the nylon filter screen, and the metal support frame is connected with the partition plate in an erected mode.
Preferably, the useless processing apparatus that touches includes useless touch body jar, exhaust gas filter, the gas outlet that the useless touched the body jar passes through the pipeline intercommunication with exhaust gas filter's air inlet, and the discharge gate of exhaust gas filter's bottom passes through the pipeline intercommunication with the feed inlet that the useless touched the body jar, and the feed inlet that the useless touched the body jar still passes through the pipeline intercommunication with hydrogenation reactor's useless touch body export, and the feed inlet that the useless touched the body jar still passes through the pipeline intercommunication with the discharge gate of silica flour collection tank.
Has the advantages that: the utility model discloses a hydrogenation removes silica flour system removes silica flour device through setting up on line and can detach the silica flour in the gas of going out of hydrogenation ware, prevents that silica flour from blockking up the pipeline, and the silica flour that filters off simultaneously can the retrieval and utilization, reduces the use of silica flour. The waste contact body treatment device can store waste residues containing silicon powder and the like generated in the hydrogenation reactor, and can be recycled after treatment, so that the use of the silicon powder is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a system for removing silicon powder by hydrogenation reaction of the present invention.
Fig. 2 is a schematic structural view of a first on-line silica powder filter according to the present invention.
Fig. 3 is a schematic structural diagram of the metal filter screen, the nylon filter screen, and the metal support frame of the present invention.
In the figure: the system comprises a hydrogenation reaction silicon powder removing system 10, a hydrogenation reactor 20, a multistage heat exchange system 30, a first-stage heat exchanger 301, a second-stage heat exchanger 302, a third-stage heat exchanger 303, a fourth-stage heat exchanger 304, an online silicon powder removing device 40, a first online silicon powder filter 401, a sealing shell 4011, a partition plate 4012, a metal filter screen 4013, a nylon filter screen 4014, a metal support frame 4015, a second online silicon powder filter 402, a silicon powder collecting tank 403, a waste contact body processing device 50, a waste contact body tank 501 and a waste gas filter 502.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1 to 3, a silicon powder removing system 10 for hydrogenation reaction includes a hydrogenation reactor 20, a multi-stage heat exchange system 30, an on-line silicon powder removing device 40, and a waste contact body processing device 50, wherein an air outlet at the top of the hydrogenation reactor 20 is connected to an air inlet of an initial tube pass of the multi-stage heat exchange system 30 through a pipeline, an air outlet of a middle tube pass of the multi-stage heat exchange system 30 is connected to an air inlet of the on-line silicon powder removing device 40 through a pipeline, an air outlet of the on-line silicon powder removing device 40 is communicated to an air inlet of a final tube pass of the multi-stage heat exchange system 30 through a pipeline, a discharge outlet at the bottom of the on-line silicon powder removing device 40 is communicated to a feed inlet of the waste contact body processing device 50 through a pipeline, the hydrogenation reactor 20 is further provided with a waste contact body outlet, and the waste contact body outlet is further communicated to a feed inlet of the waste contact body processing device 50 through a pipeline.
The utility model discloses a hydrogenation removes silica flour system 10 when the operation, the material in hydrogenation reactor 20 is after the hydrogenation to the form of air current gets into multistage heat transfer system 30's head and middle section from the gas outlet at hydrogenation reactor 20's top, later enters into on line and removes silicon flour device 40, and the air current of detaching silica flour carries out the heat transfer through multistage heat transfer system 30's end again, later gets into next link. The waste residues generated during the hydrogenation reaction are introduced into the waste contact treating apparatus 50 through a pipe.
In a preferred embodiment, the multistage heat exchange system 30 includes a first-stage heat exchanger 301, a second-stage heat exchanger 302, a third-stage heat exchanger 303, and a fourth-stage heat exchanger 304, the first-stage heat exchanger 301, the second-stage heat exchanger 302, and the third-stage heat exchanger 303 are connected in series, a gas inlet of a tube side of the first-stage heat exchanger 301 is connected to a gas outlet of the top of the hydrogenation reactor 20 through a pipeline, a gas outlet of a tube side of the third-stage heat exchanger 303 is communicated with a gas inlet of the online silicon powder removing device 40 through a pipeline, and a gas outlet of the online silicon powder removing device 40 is communicated with a gas inlet of a tube side of the fourth-stage heat exchanger 304 through a pipeline.
Further, the online silicon powder removing device 40 includes a first online silicon powder filter 401, a second online silicon powder filter 402, and a silicon powder collecting tank 403, where air inlets of the first online silicon powder filter 401 and the second online silicon powder filter 402 are communicated with an air outlet of a tube pass of the tertiary heat exchanger 303 through a pipeline, air outlets of the first online silicon powder filter 401 and the second online silicon powder filter 402 are communicated with an air inlet of a tube pass of the quaternary heat exchanger 304 through a pipeline, bottoms of the first online silicon powder filter 401 and the second online silicon powder filter 402 are communicated with a feed inlet of the silicon powder collecting tank 403 through a pipeline, and a discharge port of the silicon powder collecting tank 403 is communicated with a feed inlet of the waste contact body processing device 50 through a pipeline.
In a preferred embodiment, first online silicon powder filter 401 is the same with online silicon powder filter 402's of second structure, and first online silicon powder filter 401 includes sealed casing 4011, baffle 4012, metal filters 4013, nylon filters 4014, metal support frame 4015, sealed casing 4011's upper end is hemispherical, and sealed casing 4011's upper end is equipped with the gas outlet, and sealed casing 4011's middle-end is cylindric, and sealed casing 4011's middle-end is equipped with the air inlet, and sealed casing 4011's lower extreme is coniform, and sealed casing 4011's bottom is equipped with the discharge gate, is equipped with baffle 4012 between sealed casing 4011's upper end and the middle-end, is equipped with a plurality of through-holes on the baffle 4012, and metal filters 4013 and baffle 4012 fixed connection, and nylon filters 4014 is located metal filters 4013's inboard and establishes with metal filters 4013 cover and is connected, and metal support frame 4015 is located nylon filters 4014's inboard, and metal support frame 4012 sets up with baffle and connects.
In a preferred embodiment, the inlet of seal housing 4011 enters seal housing 4011 tangentially to seal housing 4011. After the airflow enters the seal housing 4011, most of the silicon powder falls to the bottom of the seal housing 4011 from the inner wall of the seal housing 4011 under the action of centrifugal force, and a small part of the silicon powder is filtered when passing through the metal filter screen 4013 and the nylon filter screen 4014. Metal filters 4013 can play fine anti wear effect, and nylon filters 4014's porosity is higher, can play fine filter action, also is convenient for change simultaneously, and metal support frame 4015 can protect nylon filters 4014 well and take place the displacement under the air current effect, makes to produce the space between metal filters 4013 and the nylon filters 4014.
Further, the waste contact body treatment device 50 comprises a waste contact body tank 501 and a waste gas filter 502, wherein a gas outlet of the waste contact body tank 501 is communicated with a gas inlet of the waste gas filter 502 through a pipeline, a discharge hole in the bottom of the waste gas filter 502 is communicated with a feed inlet of the waste contact body tank 501 through a pipeline, the feed inlet of the waste contact body tank 501 is communicated with a waste contact body outlet of the hydrogenation reactor 20 through a pipeline, and the feed inlet of the waste contact body tank 501 is communicated with a discharge hole of the silicon powder collection tank 403 through a pipeline.
In a preferred embodiment, the structure of the off-gas filter 502 is the same as the structure of the in-line silicon powder filter, and will not be repeated. After the waste contact bodies enter the waste contact body tank 501 from the hydrogenation reactor 20, part of the waste contact bodies are influenced by kinetic energy to generate floating dust and go out from an air outlet of the waste contact body tank 501, air pollution is caused, the waste gas filter 502 can filter out dust generated in the part of the waste gas, and the final dust falls to the bottom of the waste gas filter 502 and enters the waste contact body tank 501 for waiting treatment.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (5)
1. A hydrogenation removes silica flour system which characterized in that: including hydrogenation reactor, multistage heat transfer system, online desiliconization device, useless touch body processing apparatus, the gas outlet at hydrogenation reactor's top passes through the pipe connection with the air inlet of multistage heat transfer system's originated tube side, the gas outlet of multistage heat transfer system's middle section's tube side passes through the pipe connection with the air inlet of online desiliconization device, the gas outlet of online desiliconization device passes through the pipeline intercommunication with the air inlet of multistage heat transfer system's end section's tube side, the discharge gate of online desiliconization device's bottom passes through the pipeline intercommunication with useless touch body processing apparatus's feed inlet, hydrogenation reactor still is equipped with useless touch body export, useless touch body export still passes through the pipeline intercommunication with useless touch body processing apparatus's feed inlet.
2. The system for removing silicon powder by hydrogenation according to claim 1, wherein: the multistage heat exchange system comprises a first-stage heat exchanger, a second-stage heat exchanger, a third-stage heat exchanger and a fourth-stage heat exchanger, wherein the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger are connected in series, an air inlet of a tube side of the first-stage heat exchanger is connected with an air outlet at the top of the hydrogenation reactor through a pipeline, an air outlet of the tube side of the third-stage heat exchanger is communicated with an air inlet of the online silicon powder removing device through a pipeline, and an air outlet of the online silicon powder removing device is communicated with an air inlet of the tube side of the fourth-stage heat exchanger through a pipeline.
3. The system for removing silicon powder by hydrogenation according to claim 1, wherein: the online silicon powder removing device comprises a first online silicon powder filter, a second online silicon powder filter and a silicon powder collecting tank, wherein air inlets of the first online silicon powder filter and the second online silicon powder filter are communicated with an air outlet of a tube pass of the tertiary heat exchanger through a pipeline, air outlets of the first online silicon powder filter and the second online silicon powder filter are communicated with an air inlet of a tube pass of the quaternary heat exchanger through a pipeline, the bottoms of the first online silicon powder filter and the second online silicon powder filter are communicated with a feed inlet of the silicon powder collecting tank through a pipeline, and a discharge port of the silicon powder collecting tank is communicated with a feed inlet of the waste contact body processing device through a pipeline.
4. The hydrogenation reaction silicon powder removal system according to claim 3, wherein: the structure of the first online silicon powder filter is the same as that of the second online silicon powder filter, the first online silicon powder filter comprises a sealing shell, a partition plate, a metal filter screen, a nylon filter screen and a metal support frame, the upper end of the sealing shell is hemispherical, the upper end of the sealing shell is provided with a gas outlet, the middle end of the sealing shell is cylindrical, the middle end of the sealing shell is provided with a gas inlet, the lower end of the sealing shell is conical, the bottom of the sealing shell is provided with a discharge port, the partition plate is arranged between the upper end and the middle end of the sealing shell, the partition plate is provided with a plurality of through holes, the metal filter screen is fixedly connected with the partition plate, the nylon filter screen is positioned on the inner side of the metal filter screen and is connected with the metal filter screen in a sleeved mode, the metal support frame is positioned on the inner side of the nylon filter screen, and the metal support frame is connected with the partition plate in an erected mode.
5. The system for removing silicon powder by hydrogenation according to claim 1, wherein: the waste contact body treatment device comprises a waste contact body tank and a waste gas filter, wherein a gas outlet of the waste contact body tank is communicated with a gas inlet of the waste gas filter through a pipeline, a discharge port at the bottom of the waste gas filter is communicated with a feed inlet of the waste contact body tank through a pipeline, a feed inlet of the waste contact body tank is communicated with a waste contact body outlet of the hydrogenation reactor through a pipeline, and a feed inlet of the waste contact body tank is communicated with a discharge port of the silicon powder collecting tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222234865.7U CN217962561U (en) | 2022-08-24 | 2022-08-24 | Silicon powder removing system for hydrogenation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222234865.7U CN217962561U (en) | 2022-08-24 | 2022-08-24 | Silicon powder removing system for hydrogenation reaction |
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| Publication Number | Publication Date |
|---|---|
| CN217962561U true CN217962561U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222234865.7U Active CN217962561U (en) | 2022-08-24 | 2022-08-24 | Silicon powder removing system for hydrogenation reaction |
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| CN (1) | CN217962561U (en) |
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2022
- 2022-08-24 CN CN202222234865.7U patent/CN217962561U/en active Active
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