CN202915735U - Specific equipment with steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting - Google Patents
Specific equipment with steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting Download PDFInfo
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- CN202915735U CN202915735U CN2012207104597U CN201220710459U CN202915735U CN 202915735 U CN202915735 U CN 202915735U CN 2012207104597 U CN2012207104597 U CN 2012207104597U CN 201220710459 U CN201220710459 U CN 201220710459U CN 202915735 U CN202915735 U CN 202915735U
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- waste heat
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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
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Abstract
The utility model provides specific equipment with a steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting. The equipment comprises a combustion settling chamber, a heat accumulation temperature-uniforming device, a flow equalization waste heat exchange chamber, a booster fan, a dust collector, a main fan and an exhaust cylinder. The equipment is characterized in that the combustion settling chamber is sequentially connected with the heat accumulation temperature-uniforming device, a flow equalization waste heat exchange chamber, the booster fan, the dust collector, the main fan and the exhaust cylinder; a heat exchanger is arranged in the flow equalization waste heat exchange chamber; a hot water outlet of the heat exchanger is connected with an evaporator; the evaporator is connected with a working medium circulating pump; the outlet end is connected with a steam drum; the steam drum is connected with a steam turbine; the steam turbine is connected with a condenser; the condenser is connected with a liquid storage tank; the storage tank is connected with the circulating pump; and the booster fan and an efflux pipeline which is connected with the upper side of the metallurgical furnace are connected with the dust collector. The equipment is characterized in that R152a is adopted as a circulating organic working medium. According to the waste heat power generation device, heat energy in flue gas can be recycled and converted into high-grade electric energy to the greatest extent, so that a good environment protection effect can be achieved, the device investment is low, and the operation energy consumption is low.
Description
Technical field
The utility model relates to a kind of device for generating power by waste heat, particularly with the metallurgical furnace flue gas cogeneration energy-saving dust removal special device of drum, belongs to flue gas ash removal and cogeneration technology field.
Background technology
The purifier of metallurgical furnace flue gas is that metallurgical furnace flue gas generation, UTILIZATION OF VESIDUAL HEAT IN facility, deduster connect successively by pipeline 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 large, and light water tubulation waste heat boiler is difficult to apply to the waste heat recovery of metallurgical furnace flue gas.At present, heat accumulating type waste-heat boiler has successfully applied in the electric furnace flue gas waste heat recovery, but because the inherent shortcoming of heat exchanger tube (cost is high, not freeze proof, non-refractory, service life short), so that heat accumulating type waste-heat boiler also faces a lot of problems at steel industry universal.
Simultaneously, because the metallurgical furnace flue gas temperature fluctuation is violent, wave amplitude is large, and residual heat system just must design enough greatly, guarantees that high-temperature flue gas also can effective cooling.But actual steam output the situation of low load with strong power occurs far below the evaporation capacity of residual heat system.The economic worth that this has just reduced residual heat system has relatively increased the investment of residual heat system.
Summary of the invention
For the problems referred to above, the utility model provides the metallurgical furnace flue gas cogeneration energy-saving dust removal special device with drum, it is cooling high temperature flue gas (850 ℃～80 ℃ of temperature ranges) efficiently, heat energy in the recovered flue gas is converted into the high-grade electric energy to greatest extent, drag dedusting fan, can reduce simultaneously the exhaust temperature of flue gas, improve dust collection capacity, and not affect the stable and continuous of metallurgical furnace production.
The technical scheme that its technical problem that solves the utility model adopts is: with the metallurgical furnace flue gas cogeneration energy-saving dust removal special device of drum, comprise combustion settling chamber, thermal storage temperature equalizer, the current-sharing residual heat exchanging chamber, booster fan, deduster, main air blower, aiutage, it is characterized in that: the described combustion settling chamber thermal storage temperature equalizer that is linked in sequence, the current-sharing residual heat exchanging chamber, booster fan, deduster, main air blower, aiutage, described thermal storage temperature equalizer comprises gas approach, manganess carbide composite heat storage, sound wave ash cleaner, exhanst gas outlet and ash bucket, described manganess carbide composite heat storage is arranged between gas approach and the exhanst gas outlet, described sound wave ash cleaner step-by-step arrangement is between heat storage, in the described current-sharing residual heat exchanging chamber heat-pipe heat exchanger is installed, the cooling water inlet of heat-pipe heat exchanger is connected with the heat exchanger feed pump, the hot water outlet of heat-pipe heat exchanger is taken over the hot water inlet of shell-type evaporimeter, the cooling water outlet of shell-and-tube evaporator connects circulating water pool, circulating water pool is connected with the heat-pipe heat exchanger feed pump, consists of 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 termination drum of shell-and-tube evaporator, drum is connected with the upper flange interface of low boiling working fluid steam turbine, the bottom interface of low boiling working fluid steam turbine is connected with the air inlet of shell-and-tube cooler by pipeline, the liquid-phase outlet of shell-and-tube cooler is connected with fluid reservoir by pipeline, fluid reservoir is connected with the low pressure inlet end of working medium circulating pump, the low boiling working fluid steam turbine is connected with threephase generator, an end flange interface of shell-and-tube cooler is connected with water circulating pump, another end of shell-and-tube cooler connects lithium-bromide absorption-type refrigerating machine, lithium-bromide absorption-type refrigerating machine is connected with water circulating pump, consists of another loop.Described booster fan is connected deduster in the lump with the outer discharge pipe that is connected to the metallurgical furnace top, and deduster connects main air blower by pipeline, and main air blower is connected with aiutage.
It is further characterized in that: adopting R152a is the circulation organic working medium.
In the said structure of the present utility model, the device combinations such as device for generating power by waste heat place of water tubulation waste heat boiler, heat accumulating type waste-heat boiler, both simplified system configuration, heat energy in the recovered flue gas is converted into the high-grade electric energy to greatest extent again, 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 effects of the utility model are: because device combinations such as device for generating power by waste heat place of water tubulation waste heat boiler, heat accumulating type waste-heat boilers, so plant area is economized, investment and operating cost are low; Heat energy in the recovered flue gas is converted into the high-grade electric energy to greatest extent, 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 80 ℃, the filtrate in the sack cleaner can be selected cheapest normal temperature cloth bag, has reduced investment and operating cost; Concentration of emission is low, can guarantee to discharge dust concentration 10mg/Nm
3
The utility model has the advantage of:
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. by the lithium-bromide absorption-type refrigerating machine cooling, the temperature of cooling water is down to 10～15 ℃, satisfies working substance steam and is condensed into saturated liquid to the requirement of cooling water;
4. heat exchanger dust stratification does not stop up;
5. service life of extension device;
6. improve device for generating power by waste heat efficient;
7. reduce the device for generating power by waste heat investment;
8. can reduce and sneak into cold blast rate, save the dedusting energy consumption.
Description of drawings
Fig. 1 is structural representation of the present utility model
Among the figure: 1. metallurgical furnace, 2. water-cooled sliding sleeve, 3. combustion settling chamber, 4. outer discharge pipe, 5. thermal storage temperature equalizer, 6. gas approach, 7. manganess carbide composite heat storage, 8. ash bucket, 9. sound wave ash cleaner, 10. exhanst gas outlet, 11. current-sharing residual heat exchanging chambers, 12. heat-pipe heat exchangers, 13. booster fan, 14. dedusters, 15. main air blowers, 16. aiutage, 17. heat exchanger feed pumps, 18. circulating water pools, 19. shell-and-tube evaporator, 20. working medium circulating pumps, 21. drums, 22. fluid reservoir, 23. the low boiling working fluid steam turbine, 24. threephase generators, 25. water circulating pumps, 26. shell-and-tube cooler, 27. lithium-bromide absorption-type refrigerating machines.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
In the utility model with the metallurgical furnace flue gas cogeneration energy-saving dust removal special device of drum, comprise combustion settling chamber 3, thermal storage temperature equalizer 5, current-sharing residual heat exchanging chamber 11, booster fan 13, deduster 14, main air blower 15, aiutage 16, it is characterized in that: described combustion settling chamber 3 thermal storage temperature equalizer 5 that is linked in sequence, current-sharing residual heat exchanging chamber 11, booster fan 13, deduster 14, main air blower 15, aiutage 16, described thermal storage temperature equalizer 5 comprises gas approach 6, manganess carbide composite heat storage 7, sound wave ash cleaner 9, exhanst gas outlet 10 and ash bucket 8, described manganess carbide composite heat storage 7 is arranged between gas approach 6 and the exhanst gas outlet 10, described sound wave ash cleaner 9 step-by-step arrangements are between manganess carbide composite heat storage 7, in the described current-sharing residual heat exchanging chamber 11 heat-pipe heat exchanger 12 is installed, the cooling water inlet of heat-pipe heat exchanger 12 is connected with heat exchanger feed pump 17, the hot water outlet of heat-pipe heat exchanger 12 is taken over the hot water inlet of shell-type evaporimeter 19, the cooling water outlet of shell-and-tube evaporator 19 connects circulating water pool 18, circulating water pool 18 is connected with heat-pipe heat exchanger feed pump 17, consists of a loop.The working medium entrance point of shell-and-tube evaporator 19 is connected with the high-pressure outlet end of working medium circulating pump 20, the sender property outlet termination drum 21 of shell-and-tube evaporator 19, drum 21 is connected with the upper flange interface of low boiling working fluid steam turbine 23, the bottom interface of low boiling working fluid steam turbine 23 is connected by the air inlet of pipeline with shell-and-tube cooler 26, the liquid-phase outlet of shell-and-tube cooler 26 is connected with fluid reservoir 22 by pipeline, fluid reservoir 22 is connected with the low pressure inlet end of working medium circulating pump 20, low boiling working fluid steam turbine 23 is connected with threephase generator 24, an end flange interface of shell-and-tube cooler 26 is connected with water circulating pump 25, another end of shell-and-tube cooler 26 connects lithium-bromide absorption-type refrigerating machine 27, lithium-bromide absorption-type refrigerating machine 27 is connected with water circulating pump 25, consists of another loop.Described booster fan 13 is connected deduster 14 in the lump with the outer discharge pipe 4 that is connected to metallurgical furnace 1 top, and deduster 14 connects main air blower 15 by pipeline, and main air blower 15 is connected with aiutage 16.
Described low boiling working fluid is R152a, the power pressure that enters the low boiling working fluid steam turbine is 2.05MPa, and when the power pressure after the acting of expanding was 0.25MPa, system's electromotive power output was 2500KW, Rankine cycle efficient is 23.5%, and the flue-gas temperature that system discharges is 80 ℃.
The course of work of the present utility model: 100t/h metallurgical furnace 1 interior smoke discharging flow 27 * 10
4Nm
3/ h, 850 ℃ of temperature, dust content 25g/Nm
3Discharged by the 4th hole, sneak into cold wind through water-cooled sliding sleeve 2, enter 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, flue gas through combustion settling chamber 3 enters thermal storage temperature equalizer 5, described thermal storage temperature equalizer 5 comprises gas approach 6, manganess carbide composite heat storage 7, sound wave ash cleaner 9, exhanst gas outlet 10 and ash bucket 8, described manganess carbide composite heat storage 7 is arranged between gas approach 6 and the exhanst gas outlet 10, described sound wave ash cleaner 9 step-by-step arrangements are between manganess carbide composite heat storage 7, after the heat-accumulating and temperature-equalizing effect by 7 pairs of high-temperature flue gas of manganess carbide composite heat storage in the thermal storage temperature equalizer 5, flue gas enters in the current-sharing residual heat exchanging chamber 11, high-temperature flue gas is emitted heat, temperature is down to about 80 ℃, flue gas through cooling is out mixed with outer discharge pipe 4 flue gas out that is connected to metallurgical furnace 1 top by booster fan 13 and enters in the lump deduster 14, dust concentration 10mg/Nm after dedusting
3, be pressed into aiutage 16 by main air blower 15 and enter atmosphere.Simultaneously, recirculated water drives by heat exchanger feed pump 17, enter the heat that absorbs flue gas in the heat-pipe heat exchanger 12 that is installed in the current-sharing residual heat exchanging chamber 11, form steam water interface, steam water interface is tried hard to recommend in Natural Circulation and is entered in the shell-and-tube evaporator 19 under moving, emits heat, becomes water at low temperature, water at low temperature flows into circulating water pool 18, the circulation of a beginning new round.The low boiling organic working medium drives by working medium circulating pump 20, absorbs the heat of steam water interface in shell-and-tube evaporator 19, becomes saturated vapor, enters drum 21, but supersaturation moisture content and impurity in the drum 21 filtering sources of the gas are guaranteed steam turbine 23 even runnings.Working substance steam in the 23 interior expansion actings of low boiling working fluid steam turbine, and drives threephase generator 24 generatings by behind the pressure regulator valve.The electric energy that system sends is three-phase alternating current, and rated voltage is 380V, can incorporate electrical network in the factory into through after the pressure regulation, or directly gives consumer and use.The working substance steam of discharging from low boiling working fluid steam turbine 23 is condensed into saturated liquid by shell-and-tube cooler 26, enter fluid reservoir 22, fluid reservoir 22 can be guaranteed working medium circulating pump 20 continuous pressures, and working medium circulating pump 20 is sent in the shell-and-tube evaporator 19 after worker quality liquid is pressurizeed, the circulation of a beginning new round.From shell-and-tube cooler 26 recirculated water out, by lithium-bromide absorption-type refrigerating machine 27 coolings, the temperature of cooling water is down to 10～15 ℃, satisfies working substance steam and is condensed into saturated liquid to the requirement of cooling water, send in the shell-and-tube cooler 26 circulation of a beginning new round through water pump 25.
Because thermal storage temperature equalizer 5 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 safely all kinds of waste heat power generation equipments.
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, cool off from shell-and-tube cooler recirculated cooling water out by lithium-bromide absorption-type refrigerating machine, the temperature of cooling water is down to 10～15 ℃, satisfy working substance steam and be condensed into saturated liquid to the requirement of cooling water, take the waste heat recovery of 100t/h metallurgical furnace and dust collecting process as example, dedusting relatively is described 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 utility model to greatest extent heat energy in the recovered flue gas is converted into the high-grade electric energy, can also reach good environment protecting.
Claims (2)
1. with the metallurgical furnace flue gas cogeneration energy-saving dust removal special device of drum, comprise combustion settling chamber, thermal storage temperature equalizer, the current-sharing residual heat exchanging chamber, booster fan, deduster, main air blower, aiutage, it is characterized in that: the described combustion settling chamber thermal storage temperature equalizer that is linked in sequence, the current-sharing residual heat exchanging chamber, booster fan, deduster, main air blower, aiutage, described thermal storage temperature equalizer comprises gas approach, manganess carbide composite heat storage, sound wave ash cleaner, exhanst gas outlet and ash bucket, described manganess carbide composite heat storage is arranged between gas approach and the exhanst gas outlet, described sound wave ash cleaner step-by-step arrangement is between heat storage, in the described current-sharing residual heat exchanging chamber heat-pipe heat exchanger is installed, the cooling water inlet of heat-pipe heat exchanger is connected with the heat exchanger feed pump, the hot water outlet of heat-pipe heat exchanger is taken over the hot water inlet of shell-type evaporimeter, the cooling water outlet of shell-and-tube evaporator connects circulating water pool, circulating water pool is connected with the heat-pipe heat exchanger feed pump, consist of 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 termination drum of shell-and-tube evaporator, drum is connected with the upper flange interface of low boiling working fluid steam turbine, the bottom interface of low boiling working fluid steam turbine is connected with the air inlet of shell-and-tube cooler by pipeline, the liquid-phase outlet of shell-and-tube cooler is connected with fluid reservoir by pipeline, fluid reservoir is connected with the low pressure inlet end of working medium circulating pump, the low boiling working fluid steam turbine is connected with threephase generator, an end flange interface of shell-and-tube cooler is connected with water circulating pump, another end of shell-and-tube cooler connects lithium-bromide absorption-type refrigerating machine, lithium-bromide absorption-type refrigerating machine is connected with water circulating pump, consist of another loop, described booster fan is connected deduster in the lump with the outer discharge pipe that is connected to the metallurgical furnace top, deduster connects main air blower by pipeline, and main air blower is connected with aiutage.
2. the metallurgical furnace flue gas cogeneration energy-saving dust removal special device with drum according to claim 1 is characterized in that: adopting R152a is the circulation organic working medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207104597U CN202915735U (en) | 2012-11-27 | 2012-11-27 | Specific equipment with steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207104597U CN202915735U (en) | 2012-11-27 | 2012-11-27 | Specific equipment with steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202915735U true CN202915735U (en) | 2013-05-01 |
Family
ID=48164044
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207104597U Expired - Fee Related CN202915735U (en) | 2012-11-27 | 2012-11-27 | Specific equipment with steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202915735U (en) |
-
2012
- 2012-11-27 CN CN2012207104597U patent/CN202915735U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Jiangnan High-Precision Cold-Drawn Pipe Co.,Ltd. Assignor: Wuxi Dongyou Environmental Science & Technology Co., Ltd. Contract record no.: 2014320000366 Denomination of utility model: Specific equipment with steam drum for metallurgical furnace flue gas waste heat power generation energy-saving dedusting Granted publication date: 20130501 License type: Exclusive License Record date: 20140430 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20161127 |