CN202145101U - Organic rankine cycle waste heat power generating and dedusting special device for flue gas of metallurgical furnace - Google Patents
Organic rankine cycle waste heat power generating and dedusting special device for flue gas of metallurgical furnace Download PDFInfo
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- CN202145101U CN202145101U CN201120254791U CN201120254791U CN202145101U CN 202145101 U CN202145101 U CN 202145101U CN 201120254791 U CN201120254791 U CN 201120254791U CN 201120254791 U CN201120254791 U CN 201120254791U CN 202145101 U CN202145101 U CN 202145101U
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- heat
- waste heat
- flue gas
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- 239000002918 waste heat Substances 0.000 title claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000003546 flue gas Substances 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 9
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010248 power generation Methods 0.000 claims abstract 4
- 238000009835 boiling Methods 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 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
- 239000004744 fabric Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 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
一种冶金炉烟气有机朗肯循环余热发电及除尘专用设备，包括沉降室、余热换热室、除尘器、主风机、排气筒，其特征在于：所述沉降室顺序连接余热换热室、除尘器、主风机、排气筒，所述余热换热室内安装有热管换热器，热管换热器冷水进口与给水泵连接，热水出口接管壳式蒸发器。管壳式蒸发器工质进口端与工质循环泵连接，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，另一端与循环水泵连接，冷凝器出口接冷却塔。其进一步特征在于：采用R245fa为循环有机工质。本余热发电装置替代水列管余热锅炉等设备组合，既简化了系统配置，又最大限度地回收烟气中的热能转化为高品位电能。
A special equipment for metallurgical furnace flue gas organic Rankine cycle waste heat power generation and dust removal, including a settling chamber, a waste heat heat exchange chamber, a dust collector, a main fan, and an exhaust pipe, characterized in that the settling chamber is sequentially connected to the waste heat heat exchange chamber , Dust collector, main blower fan, exhaust tube, a heat pipe heat exchanger is installed in the waste heat heat exchange chamber, the cold water inlet of the heat pipe heat exchanger is connected to the feed water pump, and the hot water outlet is connected to the shell evaporator. The working fluid inlet port of the shell-and-tube evaporator is connected to the working fluid circulation pump, the outlet port 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, one end of the condenser is connected to the working fluid circulation pump, and the other end is connected to the circulation pump. The water pump is connected, and the condenser outlet is connected to the cooling tower. It is further characterized in that: R245fa is used as the circulating organic working fluid. This waste heat power generation device replaces the combination of water tube waste heat boiler and other equipment, which not only simplifies the system configuration, but also maximizes the recovery of heat energy in the flue gas and converts it into high-grade electric energy.
Description
Technical field
The utility model relates to circulation cogeneration of metallurgical furnace flue gas organic Rankine and dedusting technology field.
Background technology
The purifier of metallurgical furnace flue gas is that metallurgical furnace flue gas generation equipment, UTILIZATION OF VESIDUAL HEAT IN facility, deduster connect through pipeline successively in the prior art.
Usually the UTILIZATION OF VESIDUAL HEAT IN facility that adopts at present: water row tube waste heat boiler, heat accumulating type waste heat boiler reclaim the waste heat of metallurgical furnace flue gas, produce saturated vapor etc.Because the big ups and downs of metallurgical furnace flue gas temperature, dustiness is big, and light water tubulation waste heat boiler is difficult to apply to the waste heat recovery of metallurgical furnace flue gas.At present; The heat accumulating type waste heat boiler has successfully applied in the electric furnace flue gas waste heat recovery; But, make the heat accumulating type waste heat boiler also face a lot of problems at steel industry universal because the inherent shortcoming of heat exchanger tube (cost is high, not freeze proof, non-refractory, service life short).
Simultaneously, because the metallurgical furnace flue gas temperature fluctuation is violent, wave amplitude is big, and the waste heat system 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 system.The economic worth that this has just reduced the waste heat system has relatively increased the investment of waste heat system.
Summary of the invention
To the problems referred to above; The utility model provides circulation cogeneration of metallurgical furnace flue gas organic Rankine and dust-removing device special, and it is cooling down high-temperature flue gas (1250 ℃～100 ℃ of temperature ranges) efficiently, and the heat energy that can also reclaim to greatest extent in the flue gas is converted into the high-grade electric energy; Drag dedusting fan; Can reduce simultaneously the exhaust temperature of flue gas, improve dust collection capacity, and not influence the stable and continuous of metallurgical furnace production.
The utility model solves the technical scheme that its technical problem adopted: it comprises combustion settling chamber, waste heat Heat Room, deduster, main air blower, aiutage; It is characterized in that: said combustion settling chamber be linked in sequence waste heat Heat Room, deduster, main air blower, aiutage; In the said waste heat Heat Room heat exchange of heat pipe is installed; The cooling water inlet of heat exchange of heat pipe is connected with the heat exchanger feed pump, and the hot water outlet of heat exchange of heat pipe is taken over the hot water inlet of shell-type evaporimeter, and the cooling water outlet of shell-type evaporimeter connects circulating water pool; 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 condenser through pipeline, and the liquid phase outlet of 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 condenser is connected with water circulating pump; Another end of condenser connects cooling tower, and cooling tower is connected with water circulating pump, constitutes another loop.
It is further characterized in that: adopting R245fa is the circulation organic working medium.
In the said structure of the utility model; System configuration had both been simplified in the combination of equipment such as device for generating power by waste heat place of water tubulation waste heat boiler, heat accumulating type waste heat boiler, and the heat energy that can reclaim to greatest extent again in the flue gas is converted into the high-grade electric energy; Drag dedusting fan; Can reduce simultaneously the exhaust temperature of flue gas, improve dust collection capacity, reach the purpose that energy-conserving and environment-protective are produced.
The beneficial effect of the utility model is: because the combination of equipment such as device for generating power by waste heat place of water tubulation waste heat boiler, heat accumulating type waste heat boiler, so plant area is economized, investment and operating cost are low; The heat energy that can reclaim to greatest extent in the flue gas is converted into the high-grade electric energy, drags dedusting fan, has reduced system's operation energy consumption; Sensible heat is fully utilized, and has reduced the exhaust temperature of flue gas, because the exhaust temperature of flue gas can maintain below 90 ℃, the filtrate in the sack cleaner can be selected cheapest normal temperature cloth bag for use, has reduced investment and operating cost; Concentration of emission is low, can guarantee to discharge dust concentration at 10mg/Nm
3Below.
Description of drawings
Fig. 1 is the structural representation of the utility model
1. electric furnaces among the figure, 2. water-cooled sliding sleeve, 3. combustion settling chamber, 4. waste heat Heat Room, 5. deduster; 6. blower fan, 7. aiutage, 8. heat exchange of heat pipe, 9. heat exchanger feed pump; 10. circulating water pool, 11. shell-and-tube evaporators, 12. low boiling working fluid steam turbines, 13. threephase generators; 14. working medium circulating pump, 15. water circulating pumps, 16. shell-and-tube coolers, 17. cooling towers.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Circulation cogeneration of metallurgical furnace flue gas organic Rankine and dust-removing device special comprise combustion settling chamber 3, waste heat Heat Room 4, deduster 5, main air blower 6, aiutage 7 in the utility model; Said combustion settling chamber 3 be linked in sequence waste heat Heat Room 4, deduster 5, main air blower 6, aiutage 7; In the said waste heat Heat Room 4 heat exchange of heat pipe 8 is installed; The cooling water inlet of heat exchange of heat pipe 8 is connected with heat exchanger feed pump 9, and the hot water outlet of heat exchange of heat pipe 8 is taken over the hot water inlet of shell-type evaporimeter 11, and the cooling water outlet of shell-and-tube evaporator 11 connects circulating water pool 10; Circulating water pool 10 is connected with heat exchanger feed pump 9, constitutes a loop.The working medium entrance point of shell-and-tube evaporator 11 is connected with the high-pressure outlet end of working medium circulating pump 14; The sender property outlet end of shell-and-tube evaporator 11 is connected with the upper flange interface of steam turbine 12 behind pipeline; The bottom interface of low boiling working fluid steam turbine 12 is connected with the air inlet of condenser 16 through pipeline, and the liquid phase outlet of condenser 16 is connected with the low pressure inlet end of working medium circulating pump 14 through pipeline, and low boiling working fluid steam turbine 12 is connected with threephase generator 13; An end flange interface of condenser 16 is connected with water circulating pump 15; Another end of condenser connects cooling tower 17, and cooling tower 17 is connected with water circulating pump 15, constitutes another loop.
Said low boiling working fluid is R245fa; 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 0.35MPa, system's electromotive power output was 2500KW; Rankine cycle efficient is 15.9%, and the flue-gas temperature that system discharges is 90 ℃.
The course of work of the utility model: smoke discharging flow 25 * 10 in the 100t/h steel-smelting electric furnace 1
4Nm
3/ h, 1250 ℃ of temperature, dust content 35g/Nm
3Discharge by the 4th hole, sneak into cold wind, get into combustion settling chamber 3 behind the burning CO gas through water-cooled sliding sleeve 2; 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; Flue gas through combustion settling chamber 3 gets into waste heat Heat Room 4, and high-temperature flue gas is emitted heat, and temperature is reduced to about 90 ℃; Get into deduster 5, dust concentration is less than 10mg/Nm3 after dedusting.Be pressed into aiutage 7 by main air blower 6 and enter atmosphere.Simultaneously, recirculated water drives through heat exchanger feed pump 9, gets into the heat that absorbs flue gas in the heat exchange of heat pipe 8 that is installed in the waste heat Heat Room 4; Form steam water interface; Steam water interface gets in the shell-and-tube evaporator 11 under the Natural Circulation force urges, emits heat, becomes water at low temperature; Water at low temperature flows into circulating water pool 10, the circulation of a beginning new round.
Low boiling working fluid drives through working medium pump 14, in shell-and-tube evaporator 11, 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 12 in, expanding, and drive threephase generator 13 generates electricity.The working substance steam of discharging from low boiling working fluid steam turbine 12 is condensed into saturated liquid by condenser 16, sends in the shell-and-tube evaporator 11 circulation of a beginning new round after by working medium pump 14 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.
The maximum characteristics of this equipment are to adopt low boiling working fluid organic Rankine circulation cogeneration to reclaim the waste heat of metallurgical furnace flue gas.With waste heat recovery of 100t/h steel-smelting electric furnace and dust collecting process is example, and dedusting is relatively explained as follows after the utility model flow process and the conventional UTILIZATION OF VESIDUAL HEAT IN:
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 (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254791U CN202145101U (en) | 2011-07-19 | 2011-07-19 | Organic rankine cycle waste heat power generating and dedusting special device for flue gas of metallurgical furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254791U CN202145101U (en) | 2011-07-19 | 2011-07-19 | Organic rankine cycle waste heat power generating and dedusting special device for flue gas of metallurgical furnace |
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| Publication Number | Publication Date |
|---|---|
| CN202145101U true CN202145101U (en) | 2012-02-15 |
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| CN201120254791U Expired - Fee Related CN202145101U (en) | 2011-07-19 | 2011-07-19 | Organic rankine cycle waste heat power generating and dedusting special device for flue gas of metallurgical furnace |
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| CN (1) | CN202145101U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628652A (en) * | 2012-03-08 | 2012-08-08 | 江苏沙钢集团有限公司 | Method for preventing blockage of smoke system of metallurgical solid waste treatment rotary hearth furnace |
| CN102851420A (en) * | 2012-09-12 | 2013-01-02 | 首钢总公司 | Steelmaking residual heat step recycling method |
| CN105089729A (en) * | 2015-09-06 | 2015-11-25 | 东南大学 | System and method for recycling waste heat of two-stage efficient circulation evaporation organic Rankine cycle coal-fired flue gas |
-
2011
- 2011-07-19 CN CN201120254791U patent/CN202145101U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628652A (en) * | 2012-03-08 | 2012-08-08 | 江苏沙钢集团有限公司 | Method for preventing blockage of smoke system of metallurgical solid waste treatment rotary hearth furnace |
| CN102851420A (en) * | 2012-09-12 | 2013-01-02 | 首钢总公司 | Steelmaking residual heat step recycling method |
| CN105089729A (en) * | 2015-09-06 | 2015-11-25 | 东南大学 | System and method for recycling waste heat of two-stage efficient circulation evaporation organic Rankine cycle coal-fired flue gas |
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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 |