CN102425574A - Treatment method for air for nitrogen preparing braking fan of polycrystalline silicon system - Google Patents
Treatment method for air for nitrogen preparing braking fan of polycrystalline silicon system Download PDFInfo
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- CN102425574A CN102425574A CN2011103204473A CN201110320447A CN102425574A CN 102425574 A CN102425574 A CN 102425574A CN 2011103204473 A CN2011103204473 A CN 2011103204473A CN 201110320447 A CN201110320447 A CN 201110320447A CN 102425574 A CN102425574 A CN 102425574A
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- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a treatment method for air for a nitrogen preparing braking fan of a polycrystalline silicon system, relating to the field of manufacturing of gas for braking fans. The method comprises the following steps of: (1) compressing air to 0.05-2 MPa, cooling to 0-50 DEG C, and separating free water out; and (2) continually cooling the gas obtained in the step (1) to 0-20 DEG C, and separating condensed water out. In the method, the prepared gas instead of air is taken as charged air for the braking fan, so that the application time can be prolonged, a filter core is prevented from being blocked easily, the service life of equipment is prolonged, the filter core is not required to be cleaned and maintained frequently, the maintenance cost of the equipment is saved simultaneously, normal running of the production can be ensured, and the aims of saving energy, lowering consumption and reducing cost are fulfilled.
Description
Technical field
The present invention relates to a kind of braking blower and make the field with gas, especially a kind of polysilicon system system nitrogen braking blower is with the processing method of air.
Background technique
Air separation column system nitrogen is an important method; Mainly be utilize to expand in externally acting reduces can and reach the purpose of refrigeration; Thereby make airborne nitrogen and other gas separation, braking blower is an indispensable part in the turbo-expander, because the braking blower impeller directly links to each other with expander shaft; When decompressor turns round, drive the braking blower wheel rotation.The size of the drag effects braking force of blower fan pipe-line system, system resistance is big more, and more little through the air quantity of blower fan, braking force is also more little.Since there is air to get into system all the time, operation for a long time, and airborne dust and fragment cause air inlet position to filter mesh easily and stop up, and system resistance is increased, and air quantity is reduced, thereby reduced braking force, rotating speed is raise, and cause driving.Must often clear up the filter core at suction port place, cause unnecessary waste, increase cost to a certain extent, influence is produced normally.
Summary of the invention
The technical problem that the present invention will solve provides the processing method of a kind of polysilicon system system nitrogen braking blower with air, the air after the present invention handles can be in system the long period use, prolong service life of equipment, the saving cost.
The technological scheme that the present invention taked is: polysilicon system system nitrogen braking blower is with the preparation method of gas; May further comprise the steps: polysilicon system system nitrogen braking blower is with the processing method of air; May further comprise the steps: (1) is with air compression to 0.05～2MPa; Be cooled to 0～50 ℃ again, separate and remove free water;
(2) gas that (1) step was obtained continues to be cooled to 0～20 ℃, separates and removes condensed water.
Preferred polysilicon system system nitrogen braking blower is with the processing method of air, after step (2) (3) in steps: and gas removal water, carbon dioxide and hydrocarbon with (2) step obtained, adsorb through molecular sieve adsorber again.
Preferred polysilicon system system nitrogen braking blower is with the processing method of air, and may further comprise the steps: (1) is cooled to 20～45 ℃ again with air compression to 0.4～0.9MPa, separates and removes free water;
(2) gas that (1) step was obtained continues to be cooled to 2～8 ℃, separates and removes condensed water;
Preferred polysilicon system system nitrogen braking blower is with the processing method of air, and may further comprise the steps: (1) to 0.8MPa, is cooled to 40 ℃ with air compression again, separates and removes free water;
(2) gas that (1) step was obtained continues to be cooled to 5 ℃, separates and removes condensed water;
Adopt the beneficial effect that technique scheme produced to be: replace air to do the air inlet of braking blower with the prepared gas of the present invention, can prolong the application time, filter core is not easy blocked; Prolonged the working life of equipment; Need not be frequent go cleaning and keep in repair filter core also practiced thrift the apparatus maintenance expense simultaneously, more can guarantee the normal operation of producing; Accomplish to save energy and reduce the cost, reduce cost.The air that the present invention handled has been removed hydrocarbon increases the nitrogen gas purity of preparation, does not influence subsequent product, and system is favourable to polysilicon.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is the structural representation of polysilicon system system nitrogen system blower fan system;
1 is intake grill and filter, and 2 is braking blower, and 3 is turbo-expander, and 4 is coupling shaft, and 5 is degree adjustment valve, 6 exhaust outlets.
Embodiment
Embodiment 1:
Polysilicon system system nitrogen braking blower is with the processing method of air, may further comprise the steps (1) utilize compressor with air compression to 0.8MPa, be cooled to 40 ℃ through cooler again, free water is removed in separation;
(2) gas that (1) step was obtained continues to be cooled to 5 ℃ through handpiece Water Chilling Units, separates and removes condensed water;
(3) gas that utilizes purifying machine that (2) step was obtained is removed water, carbon dioxide and hydrocarbon, adsorbs through molecular sieve adsorber again.
Embodiment 2:
Polysilicon system system nitrogen braking blower is with the preparation method of gas, may further comprise the steps (1) utilize compressor with air compression to 0.9MPa, be cooled to 20 ℃ through cooler again, free water is removed in separation;
(2) gas that (1) step was obtained continues to be cooled to 2 ℃ through handpiece Water Chilling Units, separates and removes condensed water;
(3) gas that utilizes purifying machine that (2) step was obtained is removed water, carbon dioxide and hydrocarbon, adsorbs through molecular sieve adsorber again.
Embodiment 3:
Polysilicon system system nitrogen braking blower is with the preparation method of gas, may further comprise the steps (1) utilize compressor with air compression to 0.4MPa, be cooled to 45 ℃ through cooler again, free water is removed in separation;
(2) gas that (1) step was obtained continues to be cooled to 8 ℃ through handpiece Water Chilling Units, separates and removes condensed water;
(3) gas that utilizes purifying machine that (2) step was obtained is removed water, carbon dioxide and hydrocarbon, adsorbs through molecular sieve adsorber again.
Embodiment 4:
Polysilicon system system nitrogen braking blower is with the processing method of air, may further comprise the steps (1) utilize compressor with air compression to 0.05MPa, be cooled to 50 ℃ through cooler again, free water is removed in separation;
(2) gas that (1) step was obtained continues to be cooled to 20 ℃ through handpiece Water Chilling Units, separates and removes condensed water.
Embodiment 5:
Polysilicon system system nitrogen braking blower is with the processing method of air, may further comprise the steps (1) utilize compressor with air compression to 2MPa, be cooled to 10 ℃ through cooler again, free water is removed in separation;
(2) gas that (1) step was obtained continues to be cooled to 0 ℃ through handpiece Water Chilling Units, separates and removes condensed water;
(3) gas that utilizes purifying machine that (2) step was obtained is removed water, carbon dioxide and hydrocarbon, adsorbs through molecular sieve adsorber again.
Claims (4)
1. polysilicon system system nitrogen braking blower is characterized in that with the processing method of air may further comprise the steps: (1) is cooled to 0～50 ℃ again with air compression to 0.05～2MPa, separates and removes free water;
(2) gas that (1) step was obtained continues to be cooled to 0～20 ℃, separates and removes condensed water.
2. the polysilicon system makes the processing method of nitrogen braking blower with air according to claim 1; It is characterized in that; After step (2) (3) in steps: the gas that (2) step obtained is removed water, carbon dioxide and hydrocarbon, adsorb through molecular sieve adsorber again.
3. polysilicon system system nitrogen braking blower is with the processing method of air according to claim 1 or claim 2, and it is characterized in that: (1) is cooled to 20～45 ℃ again with air compression to 0.4～0.9MPa, separates and removes free water;
(2) gas that (1) step was obtained continues to be cooled to 2～8 ℃, separates and removes condensed water.
4. like the processing method of the said polysilicon of claim 3 system system nitrogen braking blower with air, it is characterized in that: (1) to 0.8MPa, is cooled to 40 ℃ with air compression again, separates and removes free water;
(2) gas that (1) step was obtained continues to be cooled to 5 ℃, separates and removes condensed water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103204473A CN102425574A (en) | 2011-10-20 | 2011-10-20 | Treatment method for air for nitrogen preparing braking fan of polycrystalline silicon system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103204473A CN102425574A (en) | 2011-10-20 | 2011-10-20 | Treatment method for air for nitrogen preparing braking fan of polycrystalline silicon system |
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| Publication Number | Publication Date |
|---|---|
| CN102425574A true CN102425574A (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103204473A Pending CN102425574A (en) | 2011-10-20 | 2011-10-20 | Treatment method for air for nitrogen preparing braking fan of polycrystalline silicon system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014219A (en) * | 2014-06-12 | 2014-09-03 | 鞍钢股份有限公司 | Method for removing water in air by expansion and cooling |
| CN106936158A (en) * | 2017-04-24 | 2017-07-07 | 江苏密斯欧智能科技有限公司 | A kind of liquid expander intelligent control method |
Citations (6)
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|---|---|---|---|---|
| US4746343A (en) * | 1985-10-30 | 1988-05-24 | Hitachi, Ltd. | Method and apparatus for gas separation |
| US5137548A (en) * | 1990-05-09 | 1992-08-11 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for purifying air to be distilled by adsorption |
| CN1133964A (en) * | 1994-12-23 | 1996-10-23 | 乔治·克劳德方法的研究开发空气股份有限公司 | Process for separation of gas mixture by cryogenic distillation |
| CN1220386A (en) * | 1997-11-26 | 1999-06-23 | 北京市奥达石化新技术开发中心 | Process for separating high pure nitrogen from air |
| CN1436994A (en) * | 2002-02-07 | 2003-08-20 | 北京燕化高新技术股份有限公司 | Air-purifying method during separating air |
| CN101632890A (en) * | 2009-08-18 | 2010-01-27 | 武汉市天虹仪表有限责任公司 | Zero gas generator |
-
2011
- 2011-10-20 CN CN2011103204473A patent/CN102425574A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746343A (en) * | 1985-10-30 | 1988-05-24 | Hitachi, Ltd. | Method and apparatus for gas separation |
| US5137548A (en) * | 1990-05-09 | 1992-08-11 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for purifying air to be distilled by adsorption |
| CN1133964A (en) * | 1994-12-23 | 1996-10-23 | 乔治·克劳德方法的研究开发空气股份有限公司 | Process for separation of gas mixture by cryogenic distillation |
| CN1220386A (en) * | 1997-11-26 | 1999-06-23 | 北京市奥达石化新技术开发中心 | Process for separating high pure nitrogen from air |
| CN1436994A (en) * | 2002-02-07 | 2003-08-20 | 北京燕化高新技术股份有限公司 | Air-purifying method during separating air |
| CN101632890A (en) * | 2009-08-18 | 2010-01-27 | 武汉市天虹仪表有限责任公司 | Zero gas generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014219A (en) * | 2014-06-12 | 2014-09-03 | 鞍钢股份有限公司 | Method for removing water in air by expansion and cooling |
| CN106936158A (en) * | 2017-04-24 | 2017-07-07 | 江苏密斯欧智能科技有限公司 | A kind of liquid expander intelligent control method |
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Application publication date: 20120425 |