CN102100990A - New technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal - Google Patents
New technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal Download PDFInfo
- Publication number
- CN102100990A CN102100990A CN2009101029519A CN200910102951A CN102100990A CN 102100990 A CN102100990 A CN 102100990A CN 2009101029519 A CN2009101029519 A CN 2009101029519A CN 200910102951 A CN200910102951 A CN 200910102951A CN 102100990 A CN102100990 A CN 102100990A
- Authority
- CN
- China
- Prior art keywords
- silicon
- dust
- electric furnace
- enters
- silicon powder
- 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.)
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000011863 silicon-based powder Substances 0.000 title claims abstract description 24
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000011084 recovery Methods 0.000 title claims abstract description 5
- 238000000746 purification Methods 0.000 title abstract 3
- 239000000779 smoke Substances 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000000428 dust Substances 0.000 claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000012716 precipitator Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 235000012054 meals Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
In the new technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal, the equipment and the process are updated, the traditional double-stage cyclone duster in front of a cloth-bag duster is canceled, and a silicon micropowder classifier is added behind the cloth-bag duster. The new process applies the silicon micropowder classifier which is arranged behind the cloth-bag duster to collect dust first, and then classify the dust. In the process the new technology for electric furnace smoke purification and recovery of silicon powder is realized, and the new technology possesses substantial energy saving effect, can achieve classification and utilization of silicon micropowder, enhance economical benefits, requires fewer operators, and reduce labor intensity.
Description
Technical field
The invention belongs to the technical field of environmental protection, industrial flue gas cleaning dedusting, especially a kind of industrial silicon electric furnace flue gas purifies silicon powder and reclaims new technology.
Background technology
Purifying silicon powder for the industrial silicon electric furnace flue gas and reclaim, all is to adopt the front that the dual stage cyclone deduster is arranged on sack cleaner, as carbon granules and other impurity of removing in the flue dust, to improve the content of silica in the silicon powder at present both at home and abroad.Because the industrial silicon electric furnace is smash stove in smelting process and smoldering stage exhaust gas volumn changes greatly, in order to reduce the dust pelletizing system energy consumption, most enviromental protection enterprises adopt frequency conversion fan more, change the exhausting amount by changing motor speed, reach energy-conservation purpose.But the result who does like this to the corresponding change of its inlet velocity of dual stage cyclone deduster, has just destroyed the necessary condition of its work, has reduced and has removed carbon efficiencies and silicon powder quality.
Summary of the invention
In order to overcome the defective that above-described prior art exists, my company's research and design has gone out the industrial silicon electric furnace flue gas and has purified silicon powder recovery new technology, its objective is: should reach the saving energy, can improve the quality of silicon powder again.
The technical program at first is to upgrade the technology that the industrial silicon electric furnace flue gas purifies the silicon powder reclaimer, promptly cancels in the traditional handicraft, is positioned at the dual stage cyclone deduster of deduster front, and sets up the silicon powder grader behind fiber bag precipitator.Technological process in the new equipment operation of this kind is: its industrial silicon electric furnace flue gas aspirates through main induced draft fan, enter reducer pipe, enter fiber bag precipitator through triple valve, its pure qi (oxygen) passes the cloth bag discharge and enters atmosphere, dust is trapped within the cloth bag, its dust thickness is increased to filtration resistance to be increased, when filtering the air quantity minimizing, close the triple valve air inlet, open the back suction air port, high pressure positive blower pumps and forms back draught with all gas in the cloth bag, and cloth bag is flat to contract, dust is peeled off from the cloth bag inwall, by high pressure positive blower dust is sent into the dust grader with back draught, realize classification, meal dirt and carbon granules are regularly discharged from ash bucket, silicon powder enters the powder storehouse with air-flow, collects also to pack after the density; The gas that enters the powder storehouse with dust separates in the gas-solid separator on top, density storehouse, and silicon powder returns and enters the powder storehouse, and pure qi (oxygen) enters in the atmosphere.
Adopt the beneficial effect of present technique, cancelled the dual stage cyclone deduster, reduced SR 800pa, energy-saving effect is remarkable; Utilize the dust grader to realize the classification utilization of SILICA FUME, equipment volume is little, and the steel consumption is low, and cost is few, and silicon powder is all at pipeline, classifying equipoment, closed operation in the powder storehouse, and environment is good, efficient is high and save operating personnel, reduce labour intensity.The economic benefit obvious social benefit.
Description of drawings
Fig. 1 purifies the process chart that silicon powder reclaims new technology for industrial silicon electric furnace flue gas of the present invention;
Fig. 2 is conventional process flow figure.
The specific embodiment
The industrial silicon electric furnace flue gas under the suction of main induced draft fan after mechanical cooler cooling, enter the preceding air intake reducer pipe of deduster enters deduster again through triple valve ash bucket, ash-laden gas enters and passes in the cloth bag that card enters deduster, pure qi (oxygen) passes cloth bag and enters atmosphere from the top shutter of deduster, dust then is trapped within the cloth bag, when being increased to filtration resistance, powder layer thickness increases, filter and just close the triple valve air inlet when air quantity reduces, opening the back suction air port utilizes high pressure positive blower that gas in the cloth bag is all taken out to remove, cloth bag contracts flat, under the effect of back draught, dust strips down from the cloth bag inwall, by high pressure positive blower dust is sent into the dust grader with air-flow and realize classification, remove carbon granules and coarse granule in the silicon powder, carbon granules and coarse granule are regularly discharged from ash bucket, and silicon powder then enters the powder storehouse with air-flow, collect and pack outward transport after density.The gas that enters the powder storehouse with dust is behind the gas-solid separator on top, density storehouse, and pure qi (oxygen) is discharged, and enters atmosphere, and silicon powder returns the powder storehouse again.
Claims (1)
1. the industrial silicon electric furnace flue gas purifies silicon powder and reclaims new technology, it is characterized in that: the technology of updating the equipment, and promptly cancel the dual stage cyclone deduster that is positioned at the fiber bag precipitator front in the traditional handicraft, and behind fiber bag precipitator, set up the silicon powder grader; The industrial silicon electric furnace flue gas purifies silicon powder recovery technological process: its industrial silicon electric furnace flue gas enters reducer pipe through the main induced draft fan suction, enter fiber bag precipitator through triple valve, its pure qi (oxygen) passes the cloth bag discharge and enters atmosphere, dust is trapped within the cloth bag, dust thickness is increased to filtration resistance to be increased, when filtering the air quantity minimizing, close the triple valve air inlet, open the back suction air port, high pressure positive blower pumps and forms back draught with all gas in the cloth bag, cloth bag is flat to contract, dust is peeled off from the cloth bag inwall, by high pressure positive blower dust is sent into the dust grader with back draught and realizes classification, and meal dirt and carbon granules are regularly discharged from ash bucket, silicon powder enters the powder storehouse with air-flow, collects also to pack after the density; The gas that enters the powder storehouse with dust separates in the gas-solid separator on top, density storehouse; Silicon powder enters the powder storehouse, and pure qi (oxygen) enters in the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101029519A CN102100990A (en) | 2009-12-18 | 2009-12-18 | New technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101029519A CN102100990A (en) | 2009-12-18 | 2009-12-18 | New technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102100990A true CN102100990A (en) | 2011-06-22 |
Family
ID=44154177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101029519A Pending CN102100990A (en) | 2009-12-18 | 2009-12-18 | New technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102100990A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764579A (en) * | 2012-07-31 | 2012-11-07 | 遵义市贵科科技有限公司 | Dedusting and desulfurizing technique of industrial silicon metal furnace smoke |
| CN107744695A (en) * | 2017-11-23 | 2018-03-02 | 中山市君禾机电设备有限公司 | A waste powder recovery device |
| CN113457818A (en) * | 2021-08-05 | 2021-10-01 | 重庆齿轮箱有限责任公司 | Waste ceramic tile sand making and powder making integrated machine and sand making and powder making method |
| CN115155218A (en) * | 2022-07-18 | 2022-10-11 | 重庆市黔永硅业有限公司 | Industrial silicon preparation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133657A (en) * | 1976-03-17 | 1979-01-09 | Elkem-Spigerverket A/S | Apparatus for purification of gasses |
| CN1991249A (en) * | 2005-12-27 | 2007-07-04 | 遵义市华力环境工程有限责任公司 | Electric furnace smelting heat recovery and utilization method |
| CN101269813A (en) * | 2008-04-15 | 2008-09-24 | 北京民海艳科技有限公司 | Novel technique for purification recovery of tiny silica flour |
-
2009
- 2009-12-18 CN CN2009101029519A patent/CN102100990A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133657A (en) * | 1976-03-17 | 1979-01-09 | Elkem-Spigerverket A/S | Apparatus for purification of gasses |
| CN1991249A (en) * | 2005-12-27 | 2007-07-04 | 遵义市华力环境工程有限责任公司 | Electric furnace smelting heat recovery and utilization method |
| CN101269813A (en) * | 2008-04-15 | 2008-09-24 | 北京民海艳科技有限公司 | Novel technique for purification recovery of tiny silica flour |
Non-Patent Citations (2)
| Title |
|---|
| 余加耕，汤义武: "超微细粉的分级研究", 《轻金属》 * |
| 杨丽芳，张志凌，何家宁，王皓: "用于硅铁电炉烟气除尘的先进技术", 《环境工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764579A (en) * | 2012-07-31 | 2012-11-07 | 遵义市贵科科技有限公司 | Dedusting and desulfurizing technique of industrial silicon metal furnace smoke |
| CN107744695A (en) * | 2017-11-23 | 2018-03-02 | 中山市君禾机电设备有限公司 | A waste powder recovery device |
| CN113457818A (en) * | 2021-08-05 | 2021-10-01 | 重庆齿轮箱有限责任公司 | Waste ceramic tile sand making and powder making integrated machine and sand making and powder making method |
| CN115155218A (en) * | 2022-07-18 | 2022-10-11 | 重庆市黔永硅业有限公司 | Industrial silicon preparation system |
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| PB01 | Publication | ||
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Application publication date: 20110622 |