CN204159174U - Metal-silicon furnace off-gas recovery utilizes system - Google Patents
Metal-silicon furnace off-gas recovery utilizes system Download PDFInfo
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- CN204159174U CN204159174U CN201420583191.4U CN201420583191U CN204159174U CN 204159174 U CN204159174 U CN 204159174U CN 201420583191 U CN201420583191 U CN 201420583191U CN 204159174 U CN204159174 U CN 204159174U
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- metal
- gas recovery
- sack cleaner
- silicon furnace
- storage tank
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Abstract
The utility model belongs to the improved filter and filter method field that are specifically designed to and dispersed granules is separated from gas or steam, be specifically related to a kind of metal-silicon furnace off-gas recovery and utilize system, comprise the cooling system connected in turn, cyclone dust collectors and sack cleaner, described cooling system and electric furnace flue gas outlet, described sack cleaner air outlet connects air-introduced machine, and connect chimney after air-introduced machine, wherein, also be provided with the ash conveying device connected successively by pipeline, pulping tank, slurry storage tank and slush pump, described slurry storage tank is connected with pulping tank by circulating pump, pulping tank also connects water pump, and this water pump connects external water source, described ash conveying device is communicated with the ash hole of sack cleaner, slurry in slurry storage tank pumps by described slush pump.The utility model metal-silicon furnace off-gas recovery utilizes system effectively to utilize SILICA FUME in metal-silicon furnace flue gas, and processing cost is lower, and can not cause secondary pollution.
Description
Technical field
The utility model the utility model belongs to the improved filter and filter method field that are specifically designed to and dispersed granules is separated from gas or steam, is specifically related to a kind of metal-silicon furnace off-gas recovery and utilizes system.
Background technology
With silica mineral and carbonaceous reducing agent etc. to be raw material through carbothermic method produce siliceous more than 97% product, be commonly referred to industrial silicon in China, in English, be called metallic silicon abroad, in Russian, be called silicon metal.Industrial silicon be widely used in metallurgy, electrically, aviation, machinery, chemical industry, medicine, national defence, the field such as building.
Because metal-silicon furnace is in smelting process, will a large amount of flue dust be produced, often produce lt industrial silicon and will produce about 300kg dust, SiO in dust
2content more than 95%, granularity be less than 1 micron account for 90%, if do not administered serious environment pollution.
The method of existing conventional process metal-silicon furnace flue gas is as follows: first by flue gas cool-down, adopt cyclone dust collectors by spark and the larger dust sedimentation from flue gas of particle subsequently, then adopt sack cleaner by SILICA FUME sedimentation, finally use encryption device to be encrypted dust.Wherein, SILICA FUME also cry silicon ash or claim cohesion silicon ash, be ferroalloy when smelting duriron and industrial silicon, produce the SiO that a large amount of volatility is very strong in ore-smelting electric furnace
2with Si gas, precipitate form after gas discharging with the condensation of air rapid oxidation, it is the accessory substance during industry is smelted, because quality comparation is light, also needs to be encrypted with encryption device.SILICA FUME pack after encryption is sold, but this processing mode Problems existing is, 1. usually will sell, so cause the cost of this processing mode higher through long-distance transport; 2. a large amount of SILICA FUME collected can waste a lot of packaging bag, and pile up like a mountain, because SILICA FUME is very thin, easily reveals and causes secondary pollution.
Utility model content
For the defect that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of SILICA FUME effectively utilized in metal-silicon furnace flue gas, and processing cost is lower, and the metal-silicon furnace off-gas recovery of secondary pollution can not be caused to utilize system.
For achieving the above object, the technical solution of the utility model is: metal-silicon furnace off-gas recovery utilizes system, comprise the cooling system connected in turn, cyclone dust collectors and sack cleaner, described cooling system and electric furnace flue gas outlet, described sack cleaner air outlet connects air-introduced machine, and connect chimney after air-introduced machine, wherein, also be provided with the ash conveying device connected successively by pipeline, pulping tank, slurry storage tank and slush pump, described slurry storage tank is connected with pulping tank by circulating pump, pulping tank also connects water pump, and this water pump connects external water source, described ash conveying device is communicated with the ash hole of sack cleaner, slurry in slurry storage tank pumps by described slush pump.
When adopting technique scheme, the electric furnace flue gas temperature of discharging from flue for electric furnace reaches more than 600 DEG C, direct process can affect the use of pipeline and separation equipment, so will by flue gas cool-down, flue gas is first after cooling system cooling, enter cyclone dust collectors, spark in flue gas, oarse-grained carbon granules, the magazins' layout such as iron oxide and calcium oxide out, and SILICA FUME cannot be separated by cyclone dust collectors, subsequently, flue gas enters sack cleaner, SILICA FUME in flue gas is separated by sack cleaner, dust in the flue gas of sack cleaner process is substantially separated to settle down, so sack cleaner air outlet connects air-introduced machine, and connect chimney after air-introduced machine by emptying for the flue gas after dedusting, in addition, sack cleaner ash hole connects ash conveying device, SILICA FUME is sent into pulping tank, water is pumped into by water pump in pulping tank, SILICA FUME is made pulpous state, the slurry initially entering slurry storage tank is rarer, by circulating pump by rarer size circulations, the concentration of slurry is raised, after slurrying completes, slurry is sent into slurry storage tank to store, slurry in slurry storage tank is pumped by slush pump and delivers to Commercial Concrete station to transportation tank car and make various particular/special requirement concrete.The utility model has additional the ash conveying device, pulping tank, slurry storage tank and the slush pump that are connected successively by pipeline, the SILICA FUME collected by sack cleaner sends into pulping tank slurrying, as the use preparing concrete, because concrete amount is large, and can use nearby, so often through short-distance transport, so the cost stacking, pack SILICA FUME and reprocessing SILICA FUME can be reduced in process metal-silicon furnace flue gas process, in addition, SILICA FUME is made slurry, SILICA FUME can not be revealed, and slurry is for the preparation of the use of concrete, can not produce secondary pollution.
Further, described cooling system is U-shaped chimney cooler.This type of cooling adopts Air flow, carries out heat exchange, make flue gas reach the object of cooling by natural radiation, and can saving resource.
Further, described ash conveying device is blower fan.Blower fan can produce negative pressure in sack cleaner, and the SILICA FUME that sack cleaner is settled down is discharged in time.
Further, described ash conveying device is drag conveyor.The SILICA FUME dropped out from sack cleaner ash hole can continue to send by the scraper plate of drag conveyor, and SILICA FUME can be avoided to accumulate in transport process.
Further, desulfurizing tower is connected with between described air-introduced machine and chimney.Containing SO in flue gas
2, directly discharge can to environment, and the flue gas that air-introduced machine is drawn, after desulfurizing tower desulfurization, enters in air, can effectively reduce the impact on environment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram that the utility model metal-silicon furnace off-gas recovery utilizes system embodiment 1;
Fig. 2 is the schematic diagram that the utility model metal-silicon furnace off-gas recovery utilizes system embodiment 2;
Fig. 3 is the schematic diagram that the utility model metal-silicon furnace off-gas recovery utilizes system embodiment 3.
Detailed description of the invention
As shown in Figure 1, a kind of metal-silicon furnace off-gas recovery utilizes system, comprise the cooling system connected in turn, cyclone dust collectors and sack cleaner, cooling system and electric furnace flue gas outlet, sack cleaner air outlet connects air-introduced machine, and connect chimney after air-introduced machine, wherein, also be provided with the ash conveying device connected successively by pipeline, pulping tank, slurry storage tank and slush pump, slurry storage tank is connected with pulping tank by circulating pump, pulping tank is common pond, shape can rectangle, circular, oval etc., shape in the utility model is rectangle, pulping tank also connects water pump, and this water pump connects external water source, ash conveying device is communicated with the ash hole of sack cleaner, slurry in slurry storage tank pumps by slush pump.
In the present embodiment, cooling system is U-shaped chimney cooler.This type of cooling adopts Air flow, carries out heat exchange, make flue gas reach the object of cooling by natural radiation, and can saving resource.
Ash conveying device is roots blower.Blower fan can produce negative pressure in sack cleaner, and the SILICA FUME that sack cleaner is settled down is discharged in time.
Desulfurizing tower is connected with between air-introduced machine and chimney.Containing SO in flue gas
2, directly discharge can to environment, and the flue gas that air-introduced machine is drawn, after desulfurizing tower desulfurization, enters in air, can effectively reduce the impact on environment.
Embodiment 2
As different from Example 1, cooling system is waste heat boiler.The temperature of flue gas can reach more than 600 DEG C, and the Energy harvesting of this part can get up by waste heat boiler, produces steam, for the use of other production.
Embodiment 3
As different from Example 1, ash conveying device is drag conveyor.The SILICA FUME dropped out from sack cleaner ash hole can continue to send by the scraper plate of drag conveyor, and SILICA FUME can be avoided to accumulate in transport process.
Specific works flow process:
Be described for embodiment 1 below.The electric furnace flue gas temperature of discharging from flue for electric furnace reaches more than 600 DEG C, direct process can affect the use of pipeline and separation equipment, so will by flue gas cool-down, flue gas is first after U-shaped chimney cooler cooling, temperature is down to about 200 DEG C, enter cyclone dust collectors subsequently, spark in flue gas, oarse-grained carbon granules, the magazins' layout such as iron oxide and change calcium out, and SILICA FUME cannot be separated by cyclone dust collectors, subsequently, flue gas enters sack cleaner, SILICA FUME in flue gas is separated by sack cleaner, dust in the flue gas of sack cleaner process is substantially separated to settle down, so sack cleaner air outlet connects air-introduced machine, flue gas after dedusting is introduced in desulfurizing tower and is sloughed SO by air-introduced machine
2then chimney is entered by emptying for the flue gas after purification, in addition, sack cleaner ash hole connects roots blower, utilizes strength that SILICA FUME is sent into pulping tank, water slurrying is pumped into by water pump in pulping tank, the slurry initially entering slurry storage tank is rarer, by circulating pump by rarer size circulations, the concentration of slurry is raised, after slurrying completes, concrete slurry is sent into slurry storage tank to store, the slurry in slurry storage tank is pumped to transportation tank car by slush pump.Be transported to the raw materials such as the pulpous state SILICA FUME in pulping tank adds water by Commercial Concrete station, cement, rubble, sand and be mixed to get special (high grade, wear-resisting, antiseepage etc.) commerical ready-mixed concrete.
Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (6)
1. metal-silicon furnace off-gas recovery utilizes system, comprise the cooling system connected in turn, cyclone dust collectors and sack cleaner, described cooling system and electric furnace flue gas outlet, described sack cleaner air outlet connects air-introduced machine, and connect chimney after air-introduced machine, it is characterized in that, also be provided with the ash conveying device connected successively by pipeline, pulping tank, slurry storage tank and slush pump, described slurry storage tank is connected with pulping tank by circulating pump, pulping tank also connects water pump, and this water pump connects external water source, described ash conveying device is communicated with the ash hole of sack cleaner, slurry in slurry storage tank pumps by described slush pump.
2. metal-silicon furnace off-gas recovery according to claim 1 utilizes system, it is characterized in that, described cooling system is U-shaped chimney cooler.
3. metal-silicon furnace off-gas recovery according to claim 1 utilizes system, it is characterized in that, described cooling system is waste heat boiler.
4. metal-silicon furnace off-gas recovery according to claim 1 utilizes system, it is characterized in that, described ash conveying device is blower fan.
5. metal-silicon furnace off-gas recovery according to claim 1 utilizes system, it is characterized in that, described ash conveying device is drag conveyor.
6. metal-silicon furnace off-gas recovery according to claim 1 utilizes system, it is characterized in that, is connected with desulfurizing tower between described air-introduced machine and chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583191.4U CN204159174U (en) | 2014-10-10 | 2014-10-10 | Metal-silicon furnace off-gas recovery utilizes system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583191.4U CN204159174U (en) | 2014-10-10 | 2014-10-10 | Metal-silicon furnace off-gas recovery utilizes system |
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| Publication Number | Publication Date |
|---|---|
| CN204159174U true CN204159174U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420583191.4U Expired - Fee Related CN204159174U (en) | 2014-10-10 | 2014-10-10 | Metal-silicon furnace off-gas recovery utilizes system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013765A (en) * | 2015-07-28 | 2015-11-04 | 湖南华电常德发电有限公司 | Dust removal method for boiler body of thermal power plant |
| CN108116892A (en) * | 2016-11-29 | 2018-06-05 | 中冶京诚工程技术有限公司 | Blast furnace dedusting ash conveying device and method |
-
2014
- 2014-10-10 CN CN201420583191.4U patent/CN204159174U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013765A (en) * | 2015-07-28 | 2015-11-04 | 湖南华电常德发电有限公司 | Dust removal method for boiler body of thermal power plant |
| CN108116892A (en) * | 2016-11-29 | 2018-06-05 | 中冶京诚工程技术有限公司 | Blast furnace dedusting ash conveying device and method |
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| Date | Code | Title | Description |
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| 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: 20150218 Termination date: 20181010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |