CN202145097U - Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace - Google Patents
Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace Download PDFInfo
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- CN202145097U CN202145097U CN201120254714U CN201120254714U CN202145097U CN 202145097 U CN202145097 U CN 202145097U CN 201120254714 U CN201120254714 U CN 201120254714U CN 201120254714 U CN201120254714 U CN 201120254714U CN 202145097 U CN202145097 U CN 202145097U
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- heat
- flue gas
- waste heat
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- condenser
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000003546 flue gas Substances 0.000 title claims abstract description 52
- 239000002918 waste heat Substances 0.000 title claims abstract description 41
- 238000010248 power generation Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000005338 heat storage Methods 0.000 claims abstract description 16
- 238000009825 accumulation Methods 0.000 claims abstract 6
- 230000001172 regenerating effect Effects 0.000 claims abstract 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 15
- 229910052748 manganese Inorganic materials 0.000 claims description 15
- 239000011572 manganese Substances 0.000 claims description 15
- 238000009835 boiling Methods 0.000 claims description 12
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 claims description 10
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 abstract description 14
- 239000000779 smoke Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 7
- 238000013459 approach Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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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)
Abstract
冶金炉烟气蓄热式余热发电专用设备，包括沉降室、蓄热均温器、余热集聚室、除尘器、主风机、排气筒，其特征在于：所述沉降室顺序连接蓄热均温器、余热集聚室、除尘器、主风机、排气筒。所述蓄热均温器包括烟气进口、蓄热体、清灰装置、烟气出口、灰斗，所述蓄热体设置于烟气进、出口之间，所述清灰装置装于蓄热体之间。所述余热集聚室装有等流速热管换热器，换热器冷水进口与给水泵连接，热水出口接蒸发器。蒸发器工质进口端与循环泵连接，出口端与汽轮机连接，汽轮机一端与冷凝器连接，另一端与发电机连接，冷凝器一端与工质循环泵连接。采用R134a为循环有机工质。本实用新型具有削峰填谷，减小温度的波动幅度，又能最大限度地回收烟气中的热能转化为高品位电能。
Special equipment for metallurgical furnace flue gas regenerative waste heat power generation, including a settling chamber, a heat storage homogenizer, a waste heat accumulation chamber, a dust collector, a main fan, and an exhaust pipe, and is characterized in that: the settling chamber is sequentially connected to a heat storage uniform temperature Device, waste heat accumulation chamber, dust collector, main fan, exhaust pipe. The heat storage homogenizer includes a flue gas inlet, a heat storage body, a dust removal device, a smoke gas outlet, and an ash hopper. The heat storage body is arranged between the smoke gas inlet and outlet, and the dust removal device is installed in the between hot bodies. The waste heat accumulation chamber is equipped with a constant flow rate heat pipe heat exchanger, the cold water inlet of the heat exchanger is connected to the feed water pump, and the hot water outlet is connected to the evaporator. The inlet end of the working medium of the evaporator is connected to the circulating pump, the outlet end is connected to the steam turbine, one end of the steam turbine is connected to the condenser, the other end is connected to the generator, and one end of the condenser is connected to the working medium circulating pump. R134a is used as the circulating organic working fluid. The utility model has the functions of cutting peaks and filling valleys, reducing the fluctuation range of temperature, and being able to recover the heat energy in the flue gas to the greatest extent and transform it into high-grade electric energy.
Description
Technical field
The utility model relates to a kind of device for generating power by waste heat, and particularly metallurgical furnace flue gas heat accumulating type cogeneration special equipment belongs to flue gas ash removal and cogeneration technology field.
Background technology
The annual mass energy that consumes of steel and iron industry, the high-temperature flue gas and the equipment cooling that produce in the smelting process have been taken away significant amount of energy.Because metallurgical furnace steel-making flue-gas temperature is very high, generally about 1150 ℃, dust concentration reaches 22g/Nm to the temperature of entering pipeline after capturing
3, accounting for more than 72% of dust total amount less than the ash of 6um, Dust Capacity is big, and sticking and thin.And the flue-gas temperature big ups and downs, dustiness is big, and light water tubulation waste heat boiler is difficult to apply to the waste heat recovery of electric furnace flue gas.At present; Heat exchange of heat pipe has successfully applied in the flue gas waste heat recovery of metallurgical furnace; But, make the heat pipe waste-heat recovery device also face a lot of problems at steel industry universal because the inherent shortcoming of heat pipe (cost is high, not freeze proof, non-refractory, service life short).
Owing to contain amounts of dust in the flue gas; Dust stratification, clogging appear in sticking and thin dust on heat exchange element, not only influence heat exchange efficiency, cause the waste heat boiler steam production not enough; Even more serious is because the stifled ash of waste heat boiler; System's fluctuation of service causes to smelt to produce and can't normally carry out the maintenance of being forced to stop production.
Simultaneously, because the metallurgical furnace flue gas temperature fluctuation is violent, wave amplitude is big, and waste-heat recovery device just must design enough greatly, guarantees that high-temperature flue gas also can effectively cool off.But actual steam output the situation of low load with strong power occurs far below the evaporation capacity of waste-heat recovery device.The economic worth that this has just reduced waste-heat recovery device has relatively increased the investment of waste-heat recovery device.
Summary of the invention
The utility model is to the problem that exists in the prior art; A kind of device for generating power by waste heat that has the heat-accumulating and temperature-equalizing device that can effectively reduce metallurgical furnace flue gas temperature fluctuation amplitude is provided; The heat energy that this device can not only reclaim in the flue gas to greatest extent is converted into the high-grade electric energy, drags dedusting fan, can reduce the exhaust temperature of flue gas simultaneously; Obtain good environment protecting, dust emission concentration is less than 6mg/Nm
3
The technical scheme that the utility model adopted is following: metallurgical furnace flue gas heat accumulating type cogeneration special equipment; Comprise that combustion settling chamber, heat-accumulating and temperature-equalizing device, waste heat gather chamber, deduster, main air blower, aiutage; It is characterized in that: said combustion settling chamber gathers chamber, deduster, main air blower, aiutage through be linked in sequence heat-accumulating and temperature-equalizing device, waste heat of pipeline; Said heat-accumulating and temperature-equalizing device comprises gas approach, carbon carbon composite heat storage, ash removal equipment for flapping, exhanst gas outlet and ash bucket; Said carbon carbon composite heat storage is arranged between gas approach and the exhanst gas outlet, and said ash removal equipment for flapping segmentation is arranged between the heat storage.Said waste heat gathers the indoor uniform flow heat exchange of heat pipe that is equipped with; The cooling water inlet of uniform flow heat exchange of heat pipe is connected with the heat exchanger feed pump; The hot water outlet of uniform flow heat exchange of heat pipe is taken over the hot water inlet of shell-type evaporimeter; The cooling water outlet of shell-and-tube evaporator connects circulating water pool, and circulating water pool is connected with the heat exchanger feed pump, constitutes a loop.The working medium entrance point of shell-and-tube evaporator is connected with the high-pressure outlet end of working medium circulating pump; The sender property outlet end of shell-and-tube evaporator is connected with the upper flange interface of steam turbine behind pipeline; The bottom interface of low boiling working fluid steam turbine is connected with the air inlet of manganese fin-plate type condenser through pipeline, and the liquid phase outlet of manganese fin-plate type condenser is connected with the low pressure inlet end of working medium circulating pump through pipeline, and the low boiling working fluid steam turbine is connected with threephase generator; An end flange interface of manganese fin-plate type condenser is connected with water circulating pump; Another end of manganese fin-plate type condenser connects cooling tower, and cooling tower is connected with water circulating pump, constitutes another loop.
It is further characterized in that: adopting R134a is the circulation organic working medium.
Because the metallurgical furnace flue gas temperature fluctuation is violent, the flue-gas temperature peak value is high, and after flue gas was handled through the heat-accumulating and temperature-equalizing device of the utility model, the flue-gas temperature fluctuating range can greatly reduce, and has also reduced the peak value of flue-gas temperature simultaneously.Flue gas through the heat-accumulating and temperature-equalizing device advances the uniform flow heat exchange of heat pipe, because the flue-gas temperature peak value reduces, the device for generating power by waste heat investment is reduced; The flue-gas temperature fluctuating range reduces, and then helps improving the stability of device for generating power by waste heat, increases the service life.
The advantage of the utility model is:
1. can alleviate the rapid drawdown that rises sharply of flue-gas temperature;
2. solve the problem of expanding with heat and contract with cold;
3. uniform flow heat exchange of heat pipe dust stratification does not stop up;
4. prolong the service life of equipment;
5. improve device for generating power by waste heat efficient;
6. reduce the device for generating power by waste heat investment;
7. can reduce and sneak into cold blast rate, practice thrift the dedusting energy consumption.
Description of drawings
Fig. 1 is the apparatus structure sketch map of the utility model.
Among the figure, 1. metallurgical furnace, 2. water-cooled sliding sleeve, 3. combustion settling chamber, 4. heat-accumulating and temperature-equalizing device; 5. gas approach, 6. carbon carbon composite heat storage, 7. ash bucket, 8. ash removal equipment for flapping, 9. exhanst gas outlet, 10. waste heat gathers the chamber; 11. the uniform flow heat exchange of heat pipe, 12. heat exchanger feed pumps, 13. circulating water pools, 14. shell-and-tube evaporators, 15. low boiling working fluid steam turbines; 16. threephase generator, 17. working medium circulating pumps, 18. water circulating pumps, 19. manganese fin-plate type condensers; 20. cooling tower, 21. dedusters, 22. main air blowers, 23. aiutages.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Metallurgical furnace flue gas heat accumulating type cogeneration special equipment comprises that combustion settling chamber 3, heat-accumulating and temperature-equalizing device 4, waste heat gather chamber 10, deduster 21, main air blower 22, aiutage 23 in the utility model; It is characterized in that: said combustion settling chamber 3 gathers chamber 10, deduster 21, main air blower 22, aiutage 23 through be linked in sequence heat-accumulating and temperature-equalizing device 4, waste heat of pipeline; Said heat-accumulating and temperature-equalizing device 4 comprises gas approach 5, carbon carbon composite heat storage 6, ash removal equipment for flapping 8, exhanst gas outlet 9 and ash bucket 7; Said carbon carbon composite heat storage 6 is arranged between gas approach 5 and the exhanst gas outlet 9, and said ash removal equipment for flapping 8 segmentations are arranged between the carbon carbon composite heat storage 6.Said waste heat gathers uniform flow heat exchange of heat pipe 11 is installed in the chamber 10; The cooling water inlet of uniform flow heat exchange of heat pipe 11 is connected with heat exchanger feed pump 12; The hot water outlet of uniform flow heat exchange of heat pipe 11 is taken over the hot water inlet of shell-type evaporimeter 14; The cooling water outlet of shell-and-tube evaporator 14 connects circulating water pool 13, and circulating water pool 13 is connected with heat exchanger feed pump 12, constitutes a loop.The working medium entrance point of shell-and-tube evaporator 14 is connected with the high-pressure outlet end of working medium circulating pump 17; The sender property outlet end of shell-and-tube evaporator 14 is connected with the upper flange interface of steam turbine 15 behind pipeline; The bottom interface of low boiling working fluid steam turbine 15 is connected with the air inlet of manganese fin-plate type condenser 19 through pipeline; The liquid phase outlet of manganese fin-plate type condenser 19 is connected with the low pressure inlet end of working medium circulating pump 17 through pipeline; Low boiling working fluid steam turbine 15 is connected with threephase generator 16, and an end flange interface of manganese fin-plate type condenser 19 is connected with water circulating pump 18, and another end of manganese fin-plate type condenser connects cooling tower 20; Cooling tower 20 is connected with water circulating pump 18, constitutes another loop.
Said low boiling working fluid is R134a; The power pressure that gets into the low boiling working fluid steam turbine is 2.15MPa, and when the power pressure after the acting of expanding was 0.25MPa, system's electromotive power output was 2500KW; Rankine cycle efficient is 20.5%, and the flue-gas temperature that system discharges is 75 ℃.
The course of work of the utility model: 150t/h metallurgical furnace 1 flue gas flow 30 * 10
4Nm3/h, 1150 ℃ of temperature, dust content 22g/Nm3 is discharged by the 4th hole, sneaks into cold wind through water-cooled sliding sleeve 2, gets into combustion settling chamber 3 behind the burning CO gas; The effect of combustion settling chamber 3 is: reduce flue gas flow rate, make the big dust particle sedimentation of carrying in the flue gas, and suitably sneak into cold wind; Finally burn CO gas; The flue gas that is come out by combustion settling chamber 3 gets into heat-accumulating and temperature-equalizing device 4, and after the heat-accumulating and temperature-equalizing effect through 6 pairs of high-temperature flue gas of carbon carbon composite heat storage in the heat-accumulating and temperature-equalizing device 4, flue gas gets into waste heat and gathers in the chamber 10; High-temperature flue gas is emitted heat; Temperature is reduced to about 75 ℃, gets into deduster 21, and dust concentration is less than 6mg/Nm3 after dedusting.Be pressed into aiutage 23 by main air blower 22 and enter atmosphere.Simultaneously, recirculated water drives through heat exchanger feed pump 12, gets into to be installed on the heat that waste heat gathers absorption flue gas in the uniform flow heat exchange of heat pipe 11 in the chamber 10; Form steam water interface; Steam water interface gets in the shell-and-tube evaporator 14 under the Natural Circulation force urges, emits heat, becomes water at low temperature; Water at low temperature flows into circulating water pool 13, the circulation of a beginning new round.
Low boiling working fluid drives through working medium pump 17, in shell-and-tube evaporator 14, absorbs the heat of steam water interface, becomes saturated vapor, behind pressure regulator valve, and the working substance steam acting of low boiling working fluid steam turbine 15 in, expanding, and drive threephase generator 16 generates electricity.The working substance steam of discharging from low boiling working fluid steam turbine 15 is condensed into saturated liquid by manganese fin-plate type condenser 19, sends in the shell-and-tube evaporator 14 circulation of a beginning new round after by working medium pump 17 worker quality liquid being pressurizeed again.The electric energy that system sends is a three-phase alternating current, and rated voltage is 380V, incorporates electrical network in the factory into after can passing through pressure regulation, or directly gives consumer and use.
Because heat-accumulating and temperature-equalizing device 4 can be to the flue-gas temperature peak load shifting; Reduce flue gas maximum temperature, reduce the fluctuating range of flue-gas temperature; Alleviate the rapid drawdown that rises sharply of flue-gas temperature; Thereby can reduce the investment of device for generating power by waste heat, improve the stability of device for generating power by waste heat, and can dispose all kinds of waste heat power generation equipments safely.
The maximum characteristics of this device are to adopt low boiling working fluid organic Rankine circulation cogeneration to reclaim the waste heat of metallurgical furnace flue gas.With cogeneration of 150t/h metallurgical furnace and dust collecting process is example, and the utility model device and conventional equipment are relatively explained as follows:
Annotate: work per year and calculated in 330th.
This shows that the utility model smoke dust discharge concentration is low, plant investment is low, operation energy consumption is low, good purification.
The heat energy that the utility model can reclaim in the flue gas to greatest extent is converted into the high-grade electric energy, can also reach good environment protecting.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254714U CN202145097U (en) | 2011-07-19 | 2011-07-19 | Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254714U CN202145097U (en) | 2011-07-19 | 2011-07-19 | Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace |
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| Publication Number | Publication Date |
|---|---|
| CN202145097U true CN202145097U (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120254714U Expired - Fee Related CN202145097U (en) | 2011-07-19 | 2011-07-19 | Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050338A (en) * | 2016-07-05 | 2016-10-26 | 北京中智信息技术股份有限公司 | Afterheat intelligent self-adaption turbine power generation system |
| CN108798813A (en) * | 2018-09-10 | 2018-11-13 | 技新（浙江）节能技术有限公司 | A kind of steel mill's flue gas waste heat power generation device |
-
2011
- 2011-07-19 CN CN201120254714U patent/CN202145097U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050338A (en) * | 2016-07-05 | 2016-10-26 | 北京中智信息技术股份有限公司 | Afterheat intelligent self-adaption turbine power generation system |
| CN108798813A (en) * | 2018-09-10 | 2018-11-13 | 技新（浙江）节能技术有限公司 | A kind of steel mill's flue gas waste heat power generation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120215 Termination date: 20140719 |
|
| EXPY | Termination of patent right or utility model |