CN203255981U - Novel fluidized bed for trichlorosilane - Google Patents
Novel fluidized bed for trichlorosilane Download PDFInfo
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- CN203255981U CN203255981U CN 201320300193 CN201320300193U CN203255981U CN 203255981 U CN203255981 U CN 203255981U CN 201320300193 CN201320300193 CN 201320300193 CN 201320300193 U CN201320300193 U CN 201320300193U CN 203255981 U CN203255981 U CN 203255981U
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- settling section
- trichlorosilane
- fluidized bed
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a novel fluidized bed for trichlorosilane. The novel fluidized bed comprises a reacting section and a settling section, the reacting section is arranged at the lower portion of the fluidized bed, the settling section is arranged at the upper portion of the fluidized bed, the settling section comprises a seal tank body, a trichlorosilane outlet is arranged at the upper portion of the seal tank body, a built-in cyclone separator is fixedly arranged in the settling section, the built-in cyclone separator has a gas outlet and a solid particle outlet, the solid particle outlet of the built-in cyclone separator is open to the reacting section, and the gas outlet of the built-in cyclone separator is in seal communication with the trichlorosilane outlet at the upper portion of the seal tank body. The cyclone separator arranged at the settling section allows incompletely-reacted silicon powder to settle and continuously react, so the silicon powder conversion rate is improved, the consumption is reduced, and the pipeline obstruction is avoided; and additionally, the diameter of the settling section is increased, so the gas speed in the settling section is reduced, the rapid take-off of reaction heat is avoided, the temperature of the settling section is maintained, the silicon powder reaction is complete, and the raw material consumption is reduced.
Description
Technical field
The utility model belongs to the trichlorosilane synthetic furnace field, and it is novel fluidized bed to be specifically related to a kind of trichlorosilane.
Background technology
Trichlorosilane is the important source material of producing at present polysilicon, its preparation method is to utilize silicon and hydrogenchloride at high temperature to react synthetic, and trichlorosilane fluidized bed is the topmost production unit of preparation trichlorosilane, and there is following defective in existing trichlorosilane fluidized bed:
1) existing trichlorosilane fluidized bed settling section does not have cyclonic separator, and the silicon powder particle of complete reaction is not taken out of with air-flow, causes bed drain purge large, easy blocking pipe, and the comparatively high consumption of while silica flour, trichlorosilane per ton consumes the about 260kg of silica flour.
2) fluidized-bed top settling section diameter is less than normal, causes gas speed too fast, takes away easily heat of reaction, and the settling section temperature can only remain on 220 ℃, is unfavorable for the continuation reaction of silica flour, and it is high to cause silica flour to consume, and production capacity is affected simultaneously.In the situation that keeps production capacity, will certainly improve gas speed, finally can affect the transformation efficiency of settling section temperature of reaction and silica flour, cause production cost high.
Therefore, being necessary to work out a kind of trichlorosilane fluidized bed can effectively overcome existing trichlorosilane fluidized bed epimere silicon powder particle and overflow with air-flow, silica flour consumes high, easy blocking pipe, simultaneously because settling section gas speed is too fast, can not keep the effective temperature of reaction of epimere, cause the silica flour reaction not exclusively, the shortcoming that raw materials consumption is high.
The utility model content
In view of this, it is novel fluidized bed that the purpose of this utility model provides a kind of trichlorosilane, overcome defects of the prior art.
The purpose of this utility model is achieved through the following technical solutions:
A kind of trichlorosilane is novel fluidized bed, comprise conversion zone and settling section, described conversion zone is arranged on the fluidized-bed bottom, described settling section is arranged on fluidized-bed top, described settling section comprises a sealed shell of tank, the top of described sealed shell of tank is provided with the trichlorosilane outlet, be fixedly installed built-in cyclonic separator in the described settling section, described built-in cyclonic separator has pneumatic outlet and solid particulate outlet, conversion zone, the trichlorosilane exit seal UNICOM on the pneumatic outlet of described built-in cyclonic separator and sealed shell of tank top are led in the solid particulate outlet of described built-in cyclonic separator;
Further, described built-in cyclonic separator is the two stage cyclone separator;
Further, the diameter of described settling section sealed shell of tank is more than or equal to 3m.
The beneficial effects of the utility model are: the cyclonic separator that the utility model settling section is newly-increased, can be effectively not the silica flour of complete reaction settle down and continue reaction, improve the silica flour transformation efficiency, reduce consumption and avoid line clogging; In addition, increase the settling section diameter, can reduce settling section gas speed, avoid heat of reaction to be taken away fast, keep the settling section temperature, make the silica flour reaction more complete, reduce raw materials consumption.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can from practice of the present utility model, obtain instruction.Target of the present utility model and other advantages can realize and obtain by following specification sheets.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is the utility model settling section synoptic diagram.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection domain of the present utility model.
As shown in the figure, a kind of trichlorosilane is novel fluidized bed, comprise conversion zone and settling section, described conversion zone is arranged on the fluidized-bed bottom, described settling section is arranged on fluidized-bed top, described settling section comprises a sealed shell of tank 1, the top of described sealed shell of tank is provided with trichlorosilane outlet 1a, be fixedly installed built-in cyclonic separator 2 in the described settling section, described built-in cyclonic separator has pneumatic outlet 2a and solid particulate outlet 2b, the solid particulate outlet 2b of described built-in cyclonic separator leads to conversion zone, the pneumatic outlet 2a of described built-in cyclonic separator and the trichlorosilane on sealed shell of tank top outlet 1a sealing UNICOM.
In the present embodiment, the cyclonic separator 2 that settling section is newly-increased, can be effectively not the silica flour of complete reaction settle down and continue reaction, improve the silica flour transformation efficiency, reduce consumption and avoid line clogging.
In the present embodiment, described built-in cyclonic separator is the two stage cyclone separator; The two stage cyclone separator, separating effect is better.
In the present embodiment, the diameter of described settling section sealed shell of tank is more than or equal to 3m; In the present embodiment diameter of original sealed shell of tank is brought up to 3m by 1.2m, increased the diameter of settling section, can reduce settling section gas speed, avoid heat of reaction to be taken away fast, keep the settling section temperature, make the silica flour reaction more complete, reduce raw materials consumption.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. a trichlorosilane is novel fluidized bed, comprise conversion zone and settling section, described conversion zone is arranged on the fluidized-bed bottom, described settling section is arranged on fluidized-bed top, described settling section comprises a sealed shell of tank, the top of described sealed shell of tank is provided with the trichlorosilane outlet, it is characterized in that: be fixedly installed built-in cyclonic separator in the described settling section, described built-in cyclonic separator has pneumatic outlet and solid particulate outlet, conversion zone, the trichlorosilane exit seal UNICOM on the pneumatic outlet of described built-in cyclonic separator and sealed shell of tank top are led in the solid particulate outlet of described built-in cyclonic separator.
2. a kind of trichlorosilane according to claim 1 is novel fluidized bed, it is characterized in that: described built-in cyclonic separator is the two stage cyclone separator.
3. a kind of trichlorosilane according to claim 1 and 2 is novel fluidized bed, it is characterized in that: the diameter of described settling section sealed shell of tank is more than or equal to 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320300193 CN203255981U (en) | 2013-05-28 | 2013-05-28 | Novel fluidized bed for trichlorosilane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320300193 CN203255981U (en) | 2013-05-28 | 2013-05-28 | Novel fluidized bed for trichlorosilane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203255981U true CN203255981U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320300193 Expired - Fee Related CN203255981U (en) | 2013-05-28 | 2013-05-28 | Novel fluidized bed for trichlorosilane |
Country Status (1)
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| CN (1) | CN203255981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342524A (en) * | 2019-08-19 | 2019-10-18 | 新疆协鑫新能源材料科技有限公司 | A kind of fine silica powder subregion reaction fluidized bed and method |
-
2013
- 2013-05-28 CN CN 201320300193 patent/CN203255981U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342524A (en) * | 2019-08-19 | 2019-10-18 | 新疆协鑫新能源材料科技有限公司 | A kind of fine silica powder subregion reaction fluidized bed and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20210528 |