CN105457402A - New industrial silicon electric furnace flue gas purification silicon micro-powder recovery process - Google Patents
New industrial silicon electric furnace flue gas purification silicon micro-powder recovery process Download PDFInfo
- Publication number
- CN105457402A CN105457402A CN201410463372.8A CN201410463372A CN105457402A CN 105457402 A CN105457402 A CN 105457402A CN 201410463372 A CN201410463372 A CN 201410463372A CN 105457402 A CN105457402 A CN 105457402A
- Authority
- CN
- China
- Prior art keywords
- silicon
- dust
- powder
- cloth bag
- air
- 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.)
- Pending
Links
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to a new industrial silicon electric furnace flue gas purification silicon micro-powder recovery process, wherein the equipment process is updated, ie., the conventional two-stage cyclone dust collector arranged in front of the bag-type dust collector is eliminated and the silicon micro-plate powder grading machine is additionally arranged on rear of the bag-type dust collector. According to the present invention, the grading machine arranged on rear of the bag-type dust collector is used, the dust collection and the grading are sequentially performed, and the new process technology for the industrial silicon electric furnace flue gas purification silicon micro-powder recovery is achieved; and the new process has characteristics of significant energy saving effect, silicon micro-powder grading utilization achieving, economic benefit improving, staff saving, and labor intensity reducing.
Description
Technical field
The invention belongs to the technical field of environmental protection, industrial flue gas cleaning dedusting, especially a kind of metal-silicon furnace gas cleaning silicon powder new recovering technology.
Background technology
Metal-silicon furnace gas cleaning silicon powder is reclaimed, all adopts both at home and abroad at present and two-stage whirlwind ash separater is arranged on before sack cleaner, be used as the carbon granules in removing flue dust and other impurity, to improve the content of silica in silicon powder.Due to metal-silicon furnace smash in smelting process stove and the smoldering stage exhaust gas volumn change greatly, in order to reduce dust pelletizing system energy consumption, most enviromental protection enterprises many employings frequency conversion fan, by change motor speed change exhausting amount, reach energy-conservation object.But the result done like this, to the corresponding change of its inlet velocity of two-stage whirlwind ash separater, just destroys the necessary condition of its work, reduces except carbon efficiencies and silicon powder quality.
Summary of the invention
In order to overcome the defect that above-described prior art exists, my company's research and design has gone out metal-silicon furnace gas cleaning silicon powder new recovering technology, its objective is: should reach the saving energy, can improve again the quality of silicon powder.
First the technical program is the technique upgrading metal-silicon furnace gas cleaning silicon powder reclaimer, namely cancels in traditional handicraft, is positioned at the two-stage whirlwind ash separater before deduster, and after fiber bag precipitator, sets up silicon powder grader.This kind of new technological process of operation of establishing be: its metal-silicon furnace flue gas aspirates through main induced draft fan, enter reducer pipe, fiber bag precipitator is entered through triple valve, its pure qi (oxygen) is discharged through cloth bag and is entered air, dust is trapped within cloth bag, its dust thickness is increased to filtration resistance to be increased, when filtering air quantity minimizing, close triple valve air inlet, open back suction air port, all gas in cloth bag pumps and forms back draught by high pressure positive blower, the flat contracting of cloth bag, dust is peeled off from cloth bag inwall, by high pressure positive blower, dust is sent into dust grader with back draught, realize classification, meal dirt and carbon granules are regularly discharged from ash bucket, silicon powder enters powder storehouse with air-flow, collect and pack after density, the gas entering powder storehouse with dust is separated in the gas-solid separator on top, density storehouse, and silicon powder returns and enters powder storehouse, and pure qi (oxygen) enters in air.
Adopt the beneficial effect of this technology, eliminate two-stage whirlwind ash separater, reduce SR 800pa, energy-saving effect is remarkable; Utilize dust grader to realize the classified utilization of SILICA FUME, equipment volume is little, steel consumption low, cost is few, silicon powder all at pipeline, classifying equipoment, closed operation in powder storehouse, environment is good, efficiency is high and save operating personnel, reduce labour intensity.Economic benefit social benefit is remarkable.
Accompanying drawing explanation
Fig. 1 is the process chart of metal-silicon furnace gas cleaning silicon powder new recovering technology of the present invention;
Fig. 2 is conventional process flow figure.
Detailed description of the invention
Metal-silicon furnace flue gas under the suction of main induced draft fan through mechanical cooler cooling after, enter the air intake reducer pipe before deduster enters deduster again ash bucket through triple valve, ash-laden gas enters through card and enters in the cloth bag of deduster, pure qi (oxygen) enters air through cloth bag from the top shutter of deduster, dust is then trapped within cloth bag, increase when powder layer thickness is increased to filtration resistance, filter when air quantity reduces and just close triple valve air inlet, opening back suction air port utilizes high pressure positive blower all to be pumped by gas in cloth bag, cloth bag contracting is flat, under the effect of back draught, dust strips down from cloth bag inwall, by high pressure positive blower, dust is sent into dust grader with air-flow and realize classification, remove the carbon granules in silicon powder and coarse granule, carbon granules and coarse granule are regularly discharged from ash bucket, silicon powder then enters powder storehouse with air-flow, collect and pack outward transport after density.Enter the gas in powder storehouse with dust after the gas-solid separator on top, density storehouse, pure qi (oxygen) is discharged, and enter air, silicon powder returns to again powder storehouse.
Claims (1)
1. metal-silicon furnace gas cleaning silicon powder new recovering technology, is characterized in that: technique of updating the equipment, and namely cancels in traditional handicraft the two-stage whirlwind ash separater be positioned at before fiber bag precipitator, and after fiber bag precipitator, sets up silicon powder grader, metal-silicon furnace gas cleaning silicon powder recovery process flow process is: its metal-silicon furnace flue gas enters reducer pipe through main induced draft fan suction, fiber bag precipitator is entered through triple valve, its pure qi (oxygen) is discharged through cloth bag and is entered air, dust is trapped within cloth bag, dust thickness is increased to filtration resistance to be increased, when filtering air quantity minimizing, close triple valve air inlet, open back suction air port, all gas in cloth bag pumps and forms back draught by high pressure positive blower, the flat contracting of cloth bag, dust is peeled off from cloth bag inwall, by high pressure positive blower, dust is sent into dust grader with back draught and realize classification, meal dirt and carbon granules are regularly discharged from ash bucket, silicon powder enters powder storehouse with air-flow, collect and pack after density, the gas entering powder storehouse with dust is separated in the gas-solid separator on top, density storehouse, silicon powder enters powder storehouse, and pure qi (oxygen) enters in air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410463372.8A CN105457402A (en) | 2014-09-12 | 2014-09-12 | New industrial silicon electric furnace flue gas purification silicon micro-powder recovery process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410463372.8A CN105457402A (en) | 2014-09-12 | 2014-09-12 | New industrial silicon electric furnace flue gas purification silicon micro-powder recovery process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105457402A true CN105457402A (en) | 2016-04-06 |
Family
ID=55595827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410463372.8A Pending CN105457402A (en) | 2014-09-12 | 2014-09-12 | New industrial silicon electric furnace flue gas purification silicon micro-powder recovery process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105457402A (en) |
-
2014
- 2014-09-12 CN CN201410463372.8A patent/CN105457402A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201899951U (en) | Combined dust removal and environment protection equipment for flue gas of smelting furnace | |
| CN201676610U (en) | Inner-filter type big-bag dust collector | |
| CN104888571A (en) | Industrial flue gas dust removal device | |
| CN102100990A (en) | New technology for electric furnace smoke purification and recovery of silicon powder during production of silicon metal | |
| CN201988286U (en) | Bag-type dust collector for straw boiler | |
| CN203518640U (en) | Smoke collection and prevention and dust removal device for AOD smelting furnace and medium frequency smelting furnace | |
| CN202292442U (en) | Device for collecting ground powder produced by grinding steel rail | |
| CN207210461U (en) | Dedusting of blast furnace gas retracting device | |
| CN203540269U (en) | Composite dust remover | |
| CN202648450U (en) | Aluminium pig smelting furnace with dustless exhaust system | |
| CN201046374Y (en) | Macrotype combined duster system | |
| CN214050823U (en) | Negative pressure blowback silica fume recovery dust collector for ferrosilicon stove of coal industry | |
| CN105457402A (en) | New industrial silicon electric furnace flue gas purification silicon micro-powder recovery process | |
| CN205627475U (en) | Dust pelletizing system is handled to AOD stove steelmaking slag | |
| CN103055619A (en) | Ferroalloy electric furnace flue gas purifying and dust recovering novel technology and device thereof | |
| CN212731552U (en) | Portable dust purification device | |
| CN210410020U (en) | Dust removal and dust fall device | |
| CN209917461U (en) | Axial flow combined type dust removal system for high-temperature high-dust-content flue gas | |
| CN203591670U (en) | Efficient dedusting device for machining special steel | |
| CN201840958U (en) | Flue gas purifying device for graded recovery of expanded perlite in shaft kiln | |
| CN203295626U (en) | Cleaning device for prebaked anode carbon bowls | |
| CN203657503U (en) | Exhaust gas processing system of kiln | |
| CN202683001U (en) | Grading dedusting system | |
| CN202105544U (en) | High-temperature resistant dust remover | |
| CN201978612U (en) | Novel purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160406 |