CN201828161U - Complementary energy recovery device of silicon smelting furnace - Google Patents
Complementary energy recovery device of silicon smelting furnace Download PDFInfo
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- CN201828161U CN201828161U CN2010205525520U CN201020552552U CN201828161U CN 201828161 U CN201828161 U CN 201828161U CN 2010205525520 U CN2010205525520 U CN 2010205525520U CN 201020552552 U CN201020552552 U CN 201020552552U CN 201828161 U CN201828161 U CN 201828161U
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- smelting furnace
- waste heat
- heat boiler
- silicon smelting
- silicon
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a complementary energy recovery device of a silicon smelting furnace, which mainly comprises a membrane-type water cooled wall heating surface, a fan, a waste heat boiler, a steam turbine, a generator set and the like, and a radiation heating surface is arranged in a two-layer hearth clearance area; a blower is connected with an air inlet at the lower part of the two-layer hearth clearance area via a pipeline; the waste heat boiler is connected with a fume outlet of a bonnet via the pipeline; and an exhaust pipeline of the waste heat boiler is connected with a deduster. Because the radiation heating surface is arranged, the exhaust temperature of the hearth of the silicon smelting furnace is reduced, an electrode of the silicon smelting furnace is protected, and the exhaust heat of the silicon smelting furnace is partially recycled; the fume temperature of the hearth is reduced again by blowing cold air into the lower part of the two-layer space of the silicon smelting furnace, and the electrode is protected; the exhaust waste heat of a smelting furnace system is recycled by the waste heat boiler to further reduce heat loss of exhaust fume of the smelting furnace; and the steam turbine and the generator set are adopted to realize power generation by recycling system waste heat.
Description
Technical field
The utility model relates to new forms of energy and high-efficiency energy-saving technology field, particularly relates to a kind of silicon smelting furnace complementary energy retracting device.
Background technology
Metallic silicon is the core material of solar energy power generating industry.Metallic silicon is the product that is carried out reduction reaction by quartz sand (silica) in electric arc furnaces with carbon (materials such as cleaned coal, timber) under hot conditions.The production technology of metallic silicon is by raw materials such as coal, charcoal, silica being dropped in the electric arc furnaces, by arc discharge provide moment high temperature, silica is melted, make it reduction with carbon or graphite and form.
The metallic silicon production of China starts from nineteen fifty-seven, has only tens production units in early days, and production capacity is very little; In recent years, along with the application of large scale integrated circuit and the development of solar energy power generating industry, the production scale of metallic silicon is expanded rapidly, and the industrial silicon producer that the whole nation has been constructed and put into operation has reached family more than 600, has formed the above production capacity of 100WT/a.At present, the production capacity of China's industrial silicon, output and export volume all occupy first place in the world.
Metallic silicon production is the high energy consumption industry.China's metallic silicon is in workshop-based production status for many years always, have small scale, energy consumption big, produce unordered, the low inferior problem of benefit.At present, China enterprise produces the average power consumption of metallic silicon per ton more than 13000KWh; And the power consumption level of external advanced enterprise is about 11000KWh; The power consumption of China's metallic silicon production has exceeded 10～20% than external advanced level, and energy-saving potential is huge!
Causing China's high main cause of metallic silicon energy consumption is that the utilization efficiency of heat energy of China's smelting industrial silicon stove is generally lower.Current, China metallic silicon smelting enterprise takes artificial batching mostly, adopts the electric arc furnaces of burner hearth open type to come metal smelting silicon.In the reduction reaction process that electric arc furnaces carries out, there is a large amount of heat energy to open wide from burner hearth and directly has been lost in the ambient atmosphere by the mode of radiation and convection current; In addition, smelt fuel gas such as product CO also the mode by natural drainage directly be drained into the atmosphere from the chimney of smelting furnace, its chemical energy that carries also fails to be utilized effectively, and causes the heat energy utilization rate of silicon smelting furnace entire system low.According to measuring and calculating, the heat energy utilization rate of low capacity industrial silicon furnace is generally only about 50%～65% in present China.
Therefore; design and develop a silicon smelting furnace complementary energy retracting device; reclaim silicon and smelt the heat-carrying energy of reaction generation gas CO and the chemical energy that carries thereof; in guard electrode with do not influence on the basis of smelting process; the exhaust complementary energy and the utilization of generating electricity by radiation heating-surface and waste heat boiler recovery silicon smelting furnace; realize the comprehensive utilization of energy and the energy-saving and emission-reduction of metallic silicon smelting process, will have wide market application prospect.
The utility model content
A purpose of the present utility model is to provide a kind of heat energy utilization rate height, widely applicable silicon smelting furnace complementary energy retracting device.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of silicon smelting furnace complementary energy retracting device, and described silicon smelting furnace comprises one deck raw material reaction district, two floor kiln thorax headroom district, three layers of bonnet; It mainly is made up of radiation heating-surface (smelting furnace upper cavity fin panel casing heating surface), air blast, waste heat boiler, steam turbine and generating set;
Described radiation heating-surface is installed on two floor kiln thorax headroom district; Blower inlet is offered in bottom in two floor kiln thorax headroom district, and air blast connects this air inlet by pipeline; Waste heat boiler is connected with the exhanst gas outlet of bonnet by pipeline; The discharge duct of waste heat boiler connects deduster, and deduster is connected with air-introduced machine by pipeline; Waste heat boiler produces steam and connects steam turbine, drives the generating set generating that is connected with steam turbine.
Described radiation heating-surface is arranged in burner hearth headroom district, and sealing of burner hearth headroom district or semi-enclosed being surrounded.
Described radiation heating-surface is made up of some fin panel casings and NULL; Some fin panel casings connect in regular turn, adopting NULL between the sheet fin panel casing at interval in twos, to avoid producing electromagnetic eddy.
After adopting such scheme, because the utility model by radiation heating-surface is installed, makes the delivery temperature of silicon smelting furnace burner hearth descend, protection silicon smelting furnace electrode and partially recycled smelting furnace exhaust gas heat; Advance cold air by two sheaf space bottom drums at the silicon smelting furnace, the CO in the burning and gas-exhausting also reduces chamber flue gas temperature, guard electrode once more; Utilize waste heat boiler to reclaim smelting furnace system exhaust waste heat, further reduce the heat loss of smelting furnace smoke evacuation; And adopt the steam turbine generating set to realize the generating utilization of system's waste heat recovery.
By above-mentioned technology and the design of structural utility model, feasible energy-saving and emission-reduction, the heat energy utilization rate effect of sufficient that the utlity model has guard electrode, the heat-carrying energy of recovery smelting furnace generation gas CO and the also generating utilization of chemical energy of carrying thereof, realization metallic silicon smelting process.The utility model can be taked different version according to the difference of silicon smelting furnace power, and is widely applicable.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of silicon smelting furnace;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is first embodiment of the present utility model;
Fig. 4 is second embodiment of the present utility model;
Fig. 5 is the 3rd embodiment of the present utility model;
Fig. 6 A is the front view of the utility model radiation heating-surface;
Fig. 6 B is the cutaway view of the utility model radiation heating-surface.
The specific embodiment
The utility model is technology and the device that proposes at as shown in Figure 1 silicon smelting furnace.Described silicon smelting furnace comprises one deck raw material reaction district 10,20, the three layers of bonnet 30 in two floor kiln thorax headroom district.
As Fig. 2, with reference to shown in Figure 1, the utility model is a kind of silicon smelting furnace complementary energy retracting device, and it mainly is made up of radiation heating-surface 1 (smelting furnace upper cavity fin panel casing heating surface), air blast 2, waste heat boiler 3, steam turbine 4 and generating set 5.
Described radiation heating-surface 1 is installed on two floor kiln thorax headroom district 20 and the sealing of burner hearth headroom district is surrounded, and shown in figure 6A, Fig. 6 B, radiation heating-surface 1 is made up of some fin panel casings 11 and NULL; Some fin panel casings 11 connect in regular turn, adopt NULL 12 at interval between two fin panel casings 11, to avoid producing electromagnetic eddy.
Described waste heat boiler 3 is made up of drum, evaporimeter, economizer etc.Because furnace outlet gas temperature is lower, the waste heat boiler of being arranged 3 adopts heat pipe waste heat boiler 3 to carry out heat exchange.Waste heat boiler 3 produces vapours, adopts steam turbine 4 acting generatings.
The utility model can be regulated the arrangement areas of fin panel casing 11 and the air quantity of air blast 2 according to the requirement of smelting furnace system outlet flue-gas temperature.
Concrete mounting means:
The air blast 2 of described air inlet 201 correspondences is the adjustable large fan of air quantity, can regulate air quantity according to the temperature information of stove internal feedback; Fin panel casing 11 is loaded on around the burner hearth headroom district 20; Heat pipe waste heat boiler 3 is installed on the air exit place of smelting furnace system, the generator 5 that waste heat boiler 3 backs are installed steam turbine 4 and are complementary with it, and cooled smoke is taken out toward chimney 8 dischargings by air-introduced machine 7 by deduster 6.
As shown in Figure 3,, can adopt and only pass through air blast 2 air-blast cooled mode cooled flue gas, guard electrode, then reclaim flue gas complementary energy by mode at silicon smelting furnace disposed outside waste heat boiler 3 according to the concrete power situation of silicon smelting furnace.
As shown in Figure 4, according to the concrete power situation of silicon smelting furnace, can adopt only by arranging mode cooled flue gas, the guard electrode of radiation heating-surface 1, then by hot stove disposed outside waste heat boiler 3 reclaims flue gas complementary energy in the ore deposit.
As shown in Figure 5,, can both arrange that the reaction of radiation heating-surface 1 absorption portion generated the waste heat of gas,, then absorb the exhaust complementary energy of submerged arc furnace system again by waste heat boiler 3 simultaneously again by air blast 2 air blast cooling according to the hot hotplate body power situation in ore deposit.
Emphasis of the present utility model just is: in burner hearth headroom district radiation heating-surface is installed; Arrange waste heat boiler at smelting furnace system exhanst gas outlet.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (3)
1. silicon smelting furnace complementary energy retracting device, described silicon smelting furnace comprises one deck raw material reaction district, two floor kiln thorax headroom district, three layers of bonnet; It is characterized in that: it mainly is made up of radiation heating-surface, air blast, waste heat boiler, steam turbine and generating set;
Described radiation heating-surface is installed on two floor kiln thorax headroom district; Blower inlet is offered in bottom in two floor kiln thorax headroom district, and air blast connects this air inlet by pipeline; Waste heat boiler is connected with the exhanst gas outlet of bonnet by pipeline; The discharge duct of waste heat boiler connects deduster, and deduster is connected with air-introduced machine by pipeline; The other end of air-introduced machine connects chimney; Waste heat boiler produces steam and connects steam turbine, drives the generating set generating that is connected with steam turbine.
2. silicon smelting furnace complementary energy retracting device according to claim 1, it is characterized in that: described radiation heating-surface is arranged in burner hearth headroom district, and sealing of burner hearth headroom district or semi-enclosed being surrounded.
3. silicon smelting furnace complementary energy retracting device according to claim 1 and 2, it is characterized in that: described radiation heating-surface is made up of some fin panel casings and NULL; Some fin panel casings connect in regular turn, adopt NULL at interval between two fin panel casings, to avoid producing electromagnetic eddy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205525520U CN201828161U (en) | 2010-09-17 | 2010-09-17 | Complementary energy recovery device of silicon smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205525520U CN201828161U (en) | 2010-09-17 | 2010-09-17 | Complementary energy recovery device of silicon smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201828161U true CN201828161U (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205525520U Expired - Lifetime CN201828161U (en) | 2010-09-17 | 2010-09-17 | Complementary energy recovery device of silicon smelting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936666A (en) * | 2010-09-17 | 2011-01-05 | 集美大学 | Process and device for recovering complementary energy of silicon smelting furnace |
| CN103047871A (en) * | 2012-12-28 | 2013-04-17 | 北京世纪源博科技股份有限公司 | Comprehensive iron alloy submerged arc furnace waste heat recovery and utilization system |
-
2010
- 2010-09-17 CN CN2010205525520U patent/CN201828161U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936666A (en) * | 2010-09-17 | 2011-01-05 | 集美大学 | Process and device for recovering complementary energy of silicon smelting furnace |
| CN103047871A (en) * | 2012-12-28 | 2013-04-17 | 北京世纪源博科技股份有限公司 | Comprehensive iron alloy submerged arc furnace waste heat recovery and utilization system |
| CN103047871B (en) * | 2012-12-28 | 2015-10-14 | 北京世纪源博科技股份有限公司 | A kind of In The Sub-mergedfurnace of The Ferroalloys waste heat recovery utilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20120627 |