CN202770234U - Waste heat power generation system for silicon-smelting electric furnace - Google Patents
Waste heat power generation system for silicon-smelting electric furnace Download PDFInfo
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- CN202770234U CN202770234U CN2012204227152U CN201220422715U CN202770234U CN 202770234 U CN202770234 U CN 202770234U CN 2012204227152 U CN2012204227152 U CN 2012204227152U CN 201220422715 U CN201220422715 U CN 201220422715U CN 202770234 U CN202770234 U CN 202770234U
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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
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Abstract
The utility model discloses a waste heat power generation system for a silicon-smelting electric furnace. The system comprises an electric furnace, a smoke system and an aerated water system, wherein the electric furnace is communicated with the smoke system, the smoke system comprises a waste heat boiler, a dust collecting device, a fan and a chimney, and the waste heat boiler is communicated with the dust collecting device, the fan and the chimney. The aerated water system comprises a water pump, a boiler coal-saving device, a boiler barrel, an evaporator, a superheater, a cold silicon vehicle heat exchanger, a flash evaporator, a steam turbine and a deoxidizing device, wherein the evaporator can change deoxygenated water in the boiler barrel into saturated steam, the superheater changes the saturated steam in the boiler barrel into superheated steam, and the flash evaporator flashes the saturated steam and saturated hot water. The system achieves the aims of step utilization, high quality and high efficiency of waste heat resources of the large silicon-smelting electric furnace, shortens cooling time of industrial silicon, and greatly improves utilization efficiency and economical benefits of the waste heat resources of the silicon-smelting electric furnace.
Description
Technical field
The utility model belongs to the residual heat resources of refining ferrosilicon furnace and utilizes the field, relates in particular to a kind of afterheat generating system that utilizes large-scale refining silicon electric furnace.
Background technology
Silicon is used in a large number smelting into Antaciron and makes the steel and iron industry alloying element, makes reducing agent in a variety of metal smelts.Good constituent element in silicon or the aluminium alloy, most Birmasils all contain silicon.The advantages such as silicon is the raw material of electronics industry hyperpure silicon, and the electronic device that ultrapure single crystal silicon semiconductor is done has that volume is little, lightweight, good reliability and life-span are long.Silicon is to utilize electrode to provide energy to carry out reduction reaction generation elementary silicon by quartzy in electric furnace with carbonaceous material (coke, coke powder etc.).Along with state macro-control, progressively eliminate at the small-sized eaf process of metallurgy refining silicon industry at present, replacement all be the above Large Electric Furnace smelting process of 25000kVA.
Small-sized electric furnace smelting principle and Large Electric Furnace metal smelting silicon principle are basic identical, all are by throat-fed, generate silicon water, CO and material under the effect of electrode paste.CO and the air reaction burning that enters in the electric furnace produce fume emission and reclaim silicon powder (main component SiO2) through dust-precipitator to heat transmission equipments, last cleaning flue gases by chimney discharged to atmosphere.Difference is that small-sized electric furnace cannot discharge hot silicon water continuously, need to discharge within a certain period of time silicon water rear enclosed dewatering outlet, and large-scale refining silicon electric furnace can be arranged silicon water continuously.The discontinuity of small-sized electric furnace silicon water can't be utilized the sensible heat of silicon water, and Large Electric Furnace can realize reclaiming silicon water sensible heat.
Summary of the invention
For solving the problem and blemish of above-mentioned middle existence, the utility model provides a kind of refining silicon electric furnace waste heat power generation system.Described technical scheme is as follows:
A kind of refining silicon electric furnace waste heat power generation system comprises:
Electric furnace (1), flue gas system and boiler circuit, described electric furnace is communicated with described flue gas system;
Described flue gas system comprises waste heat boiler (4), dust-precipitator (5), blower fan (6) and chimney (7), and described waste heat boiler (4) is communicated with described dust-precipitator (5), blower fan (6) and chimney (7);
Described boiler circuit comprise feed pump (8), boiler economizer (45), drum (41), with deaerated water in the drum become saturated vapor evaporimeter (44), saturated steam in the drum is become superheater (43), the cool silicon car heat exchanger (3) of superheated steam, the flash vessel (9) that flashes off saturated vapor and saturated hot-water, steam turbine (10) and oxygen-eliminating device (14), described feed pump (8) is communicated with described drum (41) and cool silicon car heat exchanger (3) respectively by boiler economizer (45);
Described drum (41) also is communicated with the evaporimeter (44) that deaerated water in the drum is become saturated vapor and with the superheater (43) that saturated steam in the drum becomes superheated steam respectively;
Described cool silicon car heat exchanger (3) also is communicated with the flash vessel that flashes off saturated vapor and saturated hot-water (9); The described flash vessel (9) that flashes off saturated vapor and saturated hot-water is communicated with described steam turbine (10) and oxygen-eliminating device (14) respectively by valve.
The beneficial effect of the technical scheme that the utility model provides is:
Realized the target of " cascade utilization, high-quality high the using " of large-scale refining silicon electric furnace residual heat resources, this system is by the characteristics of flash distillation, fluctuation and the unstable row that can adapt to residual heat resources, reduce simultaneously the cool time of industrial silicon, significantly improved utilization ratio and the economic worth of refining ferrosilicon furnace residual heat resources.
Description of drawings
Fig. 1 is the schematic diagram of refining silicon electric furnace waste heat power generation system architecture.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, namely realize fume afterheat resource " ladder utilization, high-quality high using " principle, the utility model provides a kind of refining silicon electric furnace waste heat power generation system, limited utilization ratio and the economic worth that has improved large-scale refining silicon electric furnace residual heat resources of this system.Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:
As shown in Figure 1, showed refining silicon electric furnace waste heat power generation system architecture, electric furnace 1, flue gas system and boiler circuit, described electric furnace is communicated with described flue gas system;
Described flue gas system comprises waste heat boiler 4, dust-precipitator 5, blower fan 6 and chimney 7, and described waste heat boiler 4 is communicated with described dust-precipitator 5, blower fan 6 and chimney 7;
Described boiler circuit comprise feed pump 8, boiler economizer 45, drum 41, with deaerated water in the drum become saturated vapor evaporimeter 44, saturated steam in the drum is become the superheater 43 of superheated steam, cool silicon car heat exchanger 3, the flash vessel 9 that flashes off saturated vapor and saturated hot-water, steam turbine 10 and oxygen-eliminating device 14, described feed pump is communicated with described drum and cool silicon car heat exchanger respectively by boiler economizer;
Described drum also is communicated with the evaporimeter that deaerated water in the drum is become saturated vapor and with the superheater that saturated steam in the drum becomes superheated steam respectively;
Described cool silicon car heat exchanger also is communicated with the flash vessel that flashes off saturated vapor and saturated hot-water; The described flash vessel that flashes off saturated vapor and saturated hot-water is communicated with described steam turbine and oxygen-eliminating device respectively by valve.
Above-mentioned drum, superheater, evaporimeter, boiler economizer are arranged in the described waste heat boiler.
Also be provided with ash handling equipment 42 in the above-mentioned waste heat boiler.
Above-mentioned electric furnace connection is provided with silicon water bag 2, and this silicon water bag connects with described cool silicon car heat exchanger.Electric furnace produces the continuous inflow silicon water bag of silicon water, and silicon water bag flows into cool silicon car with silicon water, after the moulding of silicon water cooling, carries out the fragmentation pack.
The high-temperature flue gas that produces in the electric furnace at first enters residual heat boiler for exchanging heat, and flue gas enters the silicon powder that contains in the dust-precipitator recovered flue gas after the heat exchange, and pure flue gas is sent into chimney discharged to atmosphere through blower fan.
Deaerated water is fed through boiler economizer via feed pump, control divides two parts to boiler economizer water out through valve: first enters drum, enter evaporimeter via drum, become saturated vapor and get back to drum, saturated vapor enters superheater and becomes superheated steam, and superheated steam enters the steam turbine acting; Second portion water becomes HTHP hot water after sending into cool silicon car heat exchanger, HTHP hot water enters to flash vessel, flash off saturated vapor and saturated hot-water, saturated vapor has valve control, first enters the acting of steam turbine filling mouth, second portion enters oxygen-eliminating device, and for deoxygenation provides thermal source, saturated hot-water enters to oxygen-eliminating device.
Above-mentioned steam turbine is connected with condenser 12, and is connected with condensing pump 13 by this condenser.Above-mentioned afterheat generating system also comprises generator 11, and this generator is connected with described steam turbine.After saturated vapor entered the steam turbine acting, the generator that steam turbine drives the back produced electric energy, and the exhaust steam after the acting becomes condensate water via the condenser heat exchange, and condensate water is pumped into to oxygen-eliminating device by condensing.Condensate water, part flash distillation saturated vapor, flash distillation saturated hot-water, chemistry filled water are arranged in oxygen-eliminating device, after reaching the deoxygenation requirement, send into boiler by feed pump, finish a circulation.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and is all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. refine silicon electric furnace waste heat power generation system, it is characterized in that described system comprises: electric furnace (1), flue gas system and boiler circuit, described electric furnace is communicated with described flue gas system;
Described flue gas system comprises waste heat boiler (4), dust-precipitator (5), blower fan (6) and chimney (7), and described waste heat boiler (4) is communicated with described dust-precipitator (5), blower fan (6) and chimney (7);
Described boiler circuit comprise feed pump (8), boiler economizer (45), drum (41), with deaerated water in the drum become saturated vapor evaporimeter (44), saturated steam in the drum is become superheater (43), the cool silicon car heat exchanger (3) of superheated steam, the flash vessel (9) that flashes off saturated vapor and saturated hot-water, steam turbine (10) and oxygen-eliminating device (14), described feed pump (8) is communicated with described drum (41) and cool silicon car heat exchanger (3) respectively by boiler economizer (45);
Described drum (41) also is communicated with the evaporimeter (44) that deaerated water in the drum is become saturated vapor and with the superheater (43) that saturated steam in the drum becomes superheated steam respectively;
Described cool silicon car heat exchanger (3) also is communicated with the flash vessel that flashes off saturated vapor and saturated hot-water (9); The described flash vessel (9) that flashes off saturated vapor and saturated hot-water is communicated with described steam turbine (10) and oxygen-eliminating device (14) respectively by valve.
2. refining silicon electric furnace waste heat power generation according to claim 1 system is characterized in that described drum (41), superheater (43), evaporimeter (44), boiler economizer (45) are arranged in the described waste heat boiler (4).
3. refining silicon electric furnace waste heat power generation according to claim 1 system is characterized in that, also is provided with ash handling equipment (42) in the described waste heat boiler.
4. refining silicon electric furnace waste heat power generation according to claim 1 system is characterized in that, described electric furnace (1) connects and is provided with silicon water bag (2), and this silicon water bag (2) connects with described cool silicon car heat exchanger (3).
5. refining silicon electric furnace waste heat power generation according to claim 1 system is characterized in that described steam turbine (10) is connected with condenser (12), and is connected with condensing pump (13) by this condenser (12).
6. refining silicon electric furnace waste heat power generation according to claim 1 system is characterized in that described system also comprises generator (11), and this generator (11) is connected with described steam turbine (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204227152U CN202770234U (en) | 2012-08-23 | 2012-08-23 | Waste heat power generation system for silicon-smelting electric furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204227152U CN202770234U (en) | 2012-08-23 | 2012-08-23 | Waste heat power generation system for silicon-smelting electric furnace |
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| CN202770234U true CN202770234U (en) | 2013-03-06 |
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| CN2012204227152U Expired - Lifetime CN202770234U (en) | 2012-08-23 | 2012-08-23 | Waste heat power generation system for silicon-smelting electric furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438591A (en) * | 2013-08-30 | 2013-12-11 | 华北电力大学 | Novel trench-type solar recirculating heat collection system |
| CN103900392A (en) * | 2014-04-21 | 2014-07-02 | 中冶赛迪工程技术股份有限公司 | Method and system for carrying out waste heat utilization, efficient filtration and unified purification on electric furnace flue gas |
| WO2017113537A1 (en) * | 2015-12-31 | 2017-07-06 | 广东工业大学 | Silica mineral fusion power generation system |
-
2012
- 2012-08-23 CN CN2012204227152U patent/CN202770234U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438591A (en) * | 2013-08-30 | 2013-12-11 | 华北电力大学 | Novel trench-type solar recirculating heat collection system |
| CN103900392A (en) * | 2014-04-21 | 2014-07-02 | 中冶赛迪工程技术股份有限公司 | Method and system for carrying out waste heat utilization, efficient filtration and unified purification on electric furnace flue gas |
| WO2017113537A1 (en) * | 2015-12-31 | 2017-07-06 | 广东工业大学 | Silica mineral fusion power generation system |
| AU2016380382B2 (en) * | 2015-12-31 | 2019-01-17 | Guangdong University Of Technology | Silica mineral fusion power generation system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171107 Address after: 100096, 18, 5, 518, East Building Road, Xisanqi, Beijing, Haidian District Patentee after: BEIJING BESTPOWER INTELCONTROL TECHNOLOGY Co.,Ltd. Address before: 100096, Beijing Haidian District Xisanqi building materials East Road, No. 18, can Bai building Patentee before: BEIJING BESTPOWER ELECTRICAL TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee after: BEIJING BESTPOWER INTELCONTROL CO.,LTD. Address before: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee before: BEIJING BESTPOWER INTELCONTROL TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |