CN202046888U - Device for cyclically drying silicon powder by hydrogen - Google Patents
Device for cyclically drying silicon powder by hydrogen Download PDFInfo
- Publication number
- CN202046888U CN202046888U CN2011200964511U CN201120096451U CN202046888U CN 202046888 U CN202046888 U CN 202046888U CN 2011200964511 U CN2011200964511 U CN 2011200964511U CN 201120096451 U CN201120096451 U CN 201120096451U CN 202046888 U CN202046888 U CN 202046888U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- hydrogen
- drying tower
- molecular sieve
- sieve dehydration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a device for cyclically drying silicon powder by hydrogen, which is provided with a drying tower, wherein the bottom of the drying tower is communicated with a hydrogen heating chamber through a pipeline, the top part of the drying tower is connected with a molecular sieve dehydration device through a pipeline, a filter and a cooling device are sequentially arranged on a pipeline between the drying tower and the molecular sieve dehydration device, the gas outlet end of the molecular sieve dehydration device is connected with a compressor through a pipeline, and the compressor is connected with the hydrogen heating chamber through a pipeline. The hydrogen is recycled in a closed circulation pipeline, therefore, the efficiency is high, the energy is saved, and the environment is protected.
Description
Technical field
The utility model relates to the production technology of a kind of polysilicon, silicon single crystal, the device of the dry silica flour of particularly a kind of hydrogen recycle.
Background technology
In the silica flour dewatering process of the prior art, use the nitrogen greater than 100 ℃ to feed in the drying tower earlier, because temperature surpasses the boiling point of water, so the water in the silica flour is gasified in the drying tower, water vapor generally per hour will consume 50m along with nitrogen is pulled away
3Nitrogen, behind dry the end, also need to remove to replace nitrogen in the silica flour with hydrogen, nitrogen that displaces and hydrogen partial have all directly been discharged, and have caused very big waste.
Summary of the invention
The technical problems to be solved in the utility model is at the deficiencies in the prior art, has proposed a kind of device of the dry silica flour of hydrogen recycle of energy-conserving and environment-protective.
The technical problems to be solved in the utility model is achieved through the following technical solutions, the device of the dry silica flour of a kind of hydrogen recycle, be characterized in: be provided with drying tower, bottom at drying tower communicates with the hydrogen heating chamber by pipeline, the top of drying tower joins by pipeline and molecular sieve dehydration device, drying tower is equipped with strainer and water cooler successively to the pipeline between the molecular sieve dehydration device, the outlet side of molecular sieve dehydration device joins by pipeline and compressor, and compressor joins by pipeline and hydrogen heating chamber.
The utility model is in an airtight circulation line, hydrogen is compressed earlier afterwards to carry out entering in the drying tower after heating chamber heats silica flour is carried out drying treatment, moisture in the silica flour is evaporated, taken away by hydrogen, the hydrogen that has water vapor is after overcooling, water recovery is a water, enters compressor cycle through the hydrogen behind the molecular sieve dehydration.Compared with prior art, hydrogen recycle utilization of the present utility model, efficient height, energy-conserving and environment-protective.
Description of drawings
Fig. 1 is a structure diagram of the present utility model.
Embodiment
The device of the dry silica flour of a kind of hydrogen recycle, be provided with drying tower 2, bottom at drying tower 2 communicates with hydrogen heating chamber 1 by pipeline, the top of drying tower 2 joins by pipeline and molecular sieve dehydration device 5, drying tower 2 is equipped with strainer 3 and water cooler 4 successively to the pipeline between the molecular sieve dehydration device 5, the outlet side of molecular sieve dehydration device 5 joins by pipeline and compressor 6, and compressor 6 joins by pipeline and hydrogen heating chamber 1.Molecular sieve dehydration device 5 is made of three dehydration column of vertical setting, and three dehydration column are used alternatingly, and can realize not shutting down running, one in dehydration cycle uses, one is in the regeneration stage, is in the cooling after the 3rd regeneration.Hydrogen heating chamber 1 adopts shell side indirect heating mode, can use thermal oil as heating medium, and the hydrogen heated temperatures is 150 ~ 200 ℃.
Claims (1)
1. the device of the dry silica flour of a hydrogen recycle, it is characterized in that: be provided with drying tower, bottom at drying tower communicates with the hydrogen heating chamber by pipeline, the top of drying tower joins by pipeline and molecular sieve dehydration device, drying tower is equipped with strainer and water cooler successively to the pipeline between the molecular sieve dehydration device, the outlet side of molecular sieve dehydration device joins by pipeline and compressor, and compressor joins by pipeline and hydrogen heating chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200964511U CN202046888U (en) | 2011-04-06 | 2011-04-06 | Device for cyclically drying silicon powder by hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200964511U CN202046888U (en) | 2011-04-06 | 2011-04-06 | Device for cyclically drying silicon powder by hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202046888U true CN202046888U (en) | 2011-11-23 |
Family
ID=44987206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200964511U Expired - Fee Related CN202046888U (en) | 2011-04-06 | 2011-04-06 | Device for cyclically drying silicon powder by hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202046888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857270A (en) * | 2017-12-15 | 2018-03-30 | 中石化南京工程有限公司 | A kind of silica powder drying and nitrogen gas recovering apparatus |
-
2011
- 2011-04-06 CN CN2011200964511U patent/CN202046888U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857270A (en) * | 2017-12-15 | 2018-03-30 | 中石化南京工程有限公司 | A kind of silica powder drying and nitrogen gas recovering apparatus |
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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 |
Granted publication date: 20111123 Termination date: 20180406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |