CN203132373U - Special equipment for multi-stage organic rankine cycle cogeneration of electric furnace smoke - Google Patents
Special equipment for multi-stage organic rankine cycle cogeneration of electric furnace smoke Download PDFInfo
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- CN203132373U CN203132373U CN2013201734785U CN201320173478U CN203132373U CN 203132373 U CN203132373 U CN 203132373U CN 2013201734785 U CN2013201734785 U CN 2013201734785U CN 201320173478 U CN201320173478 U CN 201320173478U CN 203132373 U CN203132373 U CN 203132373U
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Abstract
The utility model discloses special equipment for multi-stage organic rankine cycle cogeneration of electric furnace smoke. The special equipment comprises a burning settling chamber, an afterheat exchange chamber, a booster fan, a dust remover, a main air blower and an exhaust funnel. The special equipment is characterized in that the burning settling chamber is sequentially connected with the afterheat exchange chamber, the booster fan, the dust remover, the main air blower and the exhaust funnel through a pipeline; a low-pressure level evaporator, a middle-pressure level evaporator and a high-pressure level evaporator are arranged inside the afterheat exchange chamber; one end of each evaporator is connected with a working medium pressurizing pump; the other end of the each evaporator is connected with an organic turbine with a filling port; one end of the organic turbine with the filling port is connected with a condenser; the other end of the organic turbine with the filling port is connected with a generator; and the outlet of the condenser is connected with a lithium bromide absorption refrigerator. The special equipment is further characterized in that R290 is adopted as a cyclic organic working medium; the afterheat generating equipment can recover heat energy in the smoke to the maximal extent to be directly converted into high-grade electric energy; the efficiency is improved by 31-36% in comparison with a single-stage organic rankine; and good environmental protection effect also can be achieved.
Description
Technical field
The utility model relates to a kind of waste heat power generation equipment, and particularly the multistage organic Rankine circulation of electric furnace flue gas cogeneration special equipment belongs to flue gas ash removal and cogeneration technology field.
Background technology
The purifier of electric furnace flue gas is that electric furnace flue gas generation equipment, UTILIZATION OF VESIDUAL HEAT IN facility, deduster connect successively by pipeline in the prior art.
The present UTILIZATION OF VESIDUAL HEAT IN facility that adopts usually: water row tube waste heat boiler, heat pipe-type waste-heat recovery device reclaim the waste heat of electric furnace flue gas, produce saturated vapor etc.Because the big ups and downs of electric furnace flue gas temperature, 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, the heat pipe-type waste-heat recovery device has successfully applied in the electric furnace flue gas waste heat recovery, but because the inherent shortcoming of heat pipe (cost height, not freeze proof, non-refractory, service life are short), make popularize also the face a lot of problems of heat pipe waste-heat recovery device at steel industry.
Simultaneously, because the electric 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
At the problems referred to above, the utility model provides the multistage organic Rankine circulation of electric furnace flue gas cogeneration special equipment, it is the cooling down high-temperature flue gas efficiently, 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 electric furnace steel making production.
The technical scheme that its technical problem that solves the utility model adopts is: the multistage organic Rankine circulation of electric furnace flue gas cogeneration special equipment, comprise combustion settling chamber, the waste heat switch room, booster fan, deduster, main air blower, aiutage, it is characterized in that: described combustion settling chamber is by the pipeline waste heat switch room that is linked in sequence, booster fan, deduster, main air blower, aiutage, described waste heat is equipped with the low-pressure stage evaporimeter in the switch room, the medium pressure grade evaporimeter, the hiigh pressure stage evaporimeter, the entrance point of low-pressure stage evaporimeter is connected with the high-pressure outlet end of low-pressure stage working medium force (forcing) pump, the port of export one tunnel of low-pressure stage evaporimeter is connected with the low pressure filling mouth of the organic turbine of band filling mouth behind pipeline, another road is connected with the entrance point of medium pressure grade working medium force (forcing) pump, the port of export of medium pressure grade working medium force (forcing) pump connects the medium pressure grade evaporimeter, the port of export one tunnel of medium pressure grade evaporimeter is connected with the middle pressure filling mouth of the organic turbine of band filling mouth behind pipeline, another road is connected with the entrance point of hiigh pressure stage working medium force (forcing) pump, the port of export of hiigh pressure stage working medium force (forcing) pump connects the hiigh pressure stage evaporimeter, the port of export of hiigh pressure stage evaporimeter is connected with the high-pressure admission cylinder of the organic turbine of band filling mouth behind pipeline, the bottom interface of the organic turbine of band filling mouth is connected by the air inlet of pipeline with cellular aluminium fin-plate type condenser, the liquid phase outlet of cellular aluminium fin-plate type condenser is connected with fluid reservoir by pipeline, fluid reservoir is connected with the low pressure inlet end of low-pressure stage working medium force (forcing) pump, the organic turbine of band filling mouth is connected with threephase generator, an end flange interface of cellular aluminium fin-plate type condenser is connected with water circulating pump, another end of cellular aluminium fin-plate type condenser connects lithium-bromide absorption-type refrigerating machine, lithium-bromide absorption-type refrigerating machine is connected with water circulating pump, constitute another loop, described booster fan is connected deduster in the lump with the outer discharge pipe that is connected the electric furnace top, deduster connects main air blower by pipeline, and main air blower is connected with aiutage.
It is further characterized in that: adopting R290 is the circulation organic working medium.
In the said structure of the present utility model, the combination of equipment such as device for generating power by waste heat place of water tubulation waste heat boiler, heat pipe-type waste-heat recovery device, both simplified system configuration, the heat energy that can reclaim to greatest extent in the flue gas is converted into the high-grade electric energy 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: the difference that this generating equipment and single-stage singly are pressed with machine Rankine cycle maximum is, this equipment adopts the measure of multistage evaporation, utilize the low-temperature zone heating of electric furnace flue gas waste heat to produce low-pressure steam, the low pressure filling mouth that enters organic turbine expands and does work, utilize the middle-temperature section heating of electric furnace flue gas waste heat to produce middle pressure steam, the middle pressure filling mouth that enters organic turbine expands and does work, utilize the high temperature section heating of electric furnace flue gas waste heat to produce high steam, enter the high pressure cylinder expansion acting of organic turbine, realize that the electric furnace flue gas waste heat is to the step dividing potential drop heating of organic working medium, so just in heating surfaces at different levels, reduced the lack of uniformity of the heat transfer temperature difference between residual heat stream and working medium, reduced because the entropy that the different transfer of heat irreversible loss brings increases, the comparable single-stage evaporation organic Rankine circulation of its thermal efficiency improves 31～36%, reduced the exhaust temperature of flue gas, because the exhaust temperature of flue gas can maintain 80 ℃, filtrate in the sack cleaner can be selected cheapest terylene Nomex cloth bag for use, has reduced investment and operating cost; Concentration of emission is low, can guarantee to discharge dust concentration at 10mg/Nm
3’
Advantage of the present utility model is:
1. adopt multistage evaporation organic Rankine circulation cogeneration to reclaim the waste heat of electric furnace flue gas, the comparable single-stage evaporation organic Rankine circulation of its thermal efficiency improves 31～36%;
2. 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;
3. the working medium fluid reservoir can guarantee that working medium circulating pump pressurizes continuously;
4. improve device for generating power by waste heat efficient;
5. reduce the device for generating power by waste heat investment;
6. operation energy consumption is low, good purification.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among Fig. 1: 1. electric furnace, 2. water-cooled sliding sleeve, 3. combustion settling chamber, 4. outer discharge pipe, 5. waste heat switch room, 6. hiigh pressure stage evaporimeter, 7. medium pressure grade evaporimeter, 8. low-pressure stage evaporimeter, 9. booster fan, 10. deduster, 11. main air blowers, 12. aiutage, 13. low-pressure stage working medium force (forcing) pump, 14. medium pressure grade working medium force (forcing) pumps, 15. hiigh pressure stage working medium force (forcing) pumps, 16. fluid reservoir, 17. the organic turbine of band filling mouth, 18. threephase generators, 19. water circulating pumps, 20. cellular aluminium fin-plate type condenser, 21. lithium-bromide absorption-type refrigerating machines.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The multistage organic Rankine circulation of electric furnace flue gas cogeneration special equipment in the utility model, comprise combustion settling chamber 3, waste heat switch room 5, booster fan 9, deduster 10, main air blower 11, aiutage 12, it is characterized in that: described combustion settling chamber 3 is by the pipeline waste heat switch room 5 that is linked in sequence, booster fan 9, deduster 10, main air blower 11, aiutage 12, in the described waste heat switch room 5 low-pressure stage evaporimeter 8 is installed, medium pressure grade evaporimeter 7, hiigh pressure stage evaporimeter 6, the entrance point of low-pressure stage evaporimeter 8 is connected with the high-pressure outlet end of low-pressure stage working medium force (forcing) pump 13, the port of export one tunnel of low-pressure stage evaporimeter 8 is connected with the low pressure filling mouth of the organic turbine 17 of band filling mouth behind pipeline, another road is connected with the entrance point of medium pressure grade working medium force (forcing) pump 14, the port of export of medium pressure grade working medium force (forcing) pump 14 connects medium pressure grade evaporimeter 7, the port of export one tunnel of medium pressure grade evaporimeter 7 is connected with the middle pressure filling mouth of the organic turbine 17 of band filling mouth behind pipeline, another road is connected with the entrance point of hiigh pressure stage working medium force (forcing) pump 15, the port of export of hiigh pressure stage working medium force (forcing) pump 15 connects hiigh pressure stage evaporimeter 6, the port of export of hiigh pressure stage evaporimeter 6 is connected with the high-pressure admission cylinder of the organic turbine 17 of band filling mouth behind pipeline, the bottom interface of the organic turbine 17 of band filling mouth is connected by the air inlet of pipeline with cellular aluminium fin-plate type condenser 20, the liquid phase outlet of cellular aluminium fin-plate type condenser 20 is connected with fluid reservoir 16 by pipeline, fluid reservoir 16 is connected with the low pressure inlet end of low-pressure stage working medium force (forcing) pump 13, the organic turbine 17 of band filling mouth is connected with threephase generator 18, an end flange interface of cellular aluminium fin-plate type condenser 20 is connected with water circulating pump 19, another end of cellular aluminium fin-plate type condenser 20 connects lithium-bromide absorption-type refrigerating machine 21, lithium-bromide absorption-type refrigerating machine 21 is connected with water circulating pump 19, constitute another loop, described booster fan 9 is connected deduster 10 in the lump with the outer discharge pipe 4 that is connected the electric furnace top, deduster 10 connects main air blower 11 by pipeline, and main air blower 11 is connected with aiutage 12.
Described low boiling organic working medium is R290, three grades of evaporations, the low-pressure stage evaporating pressure is 0.182MPa, the medium pressure grade evaporating pressure is 1.09MPa, the hiigh pressure stage evaporating pressure is 2.58MPa, and when the power pressure after the acting of expanding was 0.46MPa, system's electromotive power output was 2500KW, Rankine cycle efficient is 27.6%, and the flue-gas temperature that system discharges is 80 ℃.
The course of work of the present utility model: smoke discharging flow 18 * 10 in the 50t/h steel-smelting electric furnace 1
4Nm
3/ h, 1000 ℃ 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 in the waste heat switch room 5, and high-temperature flue gas is emitted heat, and temperature is down to 80 ℃, flue gas through cooling is mixed by the flue gas that booster fan 9 comes out with the outer discharge pipe 4 that is connected electric furnace 1 top comes out and enters deduster 10 in the lump, dust concentration 10mg/Nm after dedusting
3Be pressed into aiutage 12 by main air blower 11 and enter atmosphere, simultaneously, organic working medium liquid through condensation, driving through low-pressure stage working medium force (forcing) pump 13, absorb the heat of fume afterheat carrier earlier in the low-pressure stage evaporimeter 8 in being installed on waste heat switch room 5, become the low-pressure stage working substance steam, one the tunnel enters the low pressure filling mouth of band filling mouth organic turbine 17 through pipeline, another road is after 14 pressurizations of medium pressure grade working medium force (forcing) pump, enter the heat that absorbs the fume afterheat carrier in the medium pressure grade evaporimeter 7, become the medium pressure grade working substance steam, one the tunnel enters the middle pressure filling mouth of band filling mouth organic turbine 17 through pipeline, another road is after 15 pressurizations of hiigh pressure stage working medium force (forcing) pump, enter the heat that absorbs the fume afterheat carrier in the hiigh pressure stage evaporimeter 6, become the hiigh pressure stage working substance steam, enter the high-pressure admission cylinder of the organic turbine 17 of band filling mouth through pipeline, the working substance steam acting of in multistage organic turbine 17, expanding, and drive threephase generator 18 generatings, the electric energy that system sends is three-phase alternating current, rated voltage is 380V, can incorporate electrical network in the factory into through after the pressure regulation, or directly give consumer and use, the working substance steam of discharging from the organic turbine 17 of band filling mouth is condensed into saturated liquid by cellular aluminium fin-plate type condenser 20, enter fluid reservoir 16, fluid reservoir 16 can guarantee that low-pressure stage working medium force (forcing) pump 13 pressurizes continuously, send in the low-pressure stage evaporimeter 8 after by low-pressure stage working medium force (forcing) pump 13 worker quality liquid being pressurizeed again, the circulation of a beginning new round, the recirculated water that comes out from cellular aluminium fin-plate type condenser 20, by lithium-bromide absorption-type refrigerating machine 21 coolings, 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, send in the cellular aluminium fin-plate type condenser 20 circulation of a beginning new round through water circulating pump 19.
The maximum characteristics of this equipment are to adopt multistage evaporation organic Rankine circulation cogeneration to reclaim the waste heat of electric furnace flue gas, the recirculated cooling water that comes out from shell-and-tube cooler by 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.
Be example with the waste heat recovery of 50t/h steel-smelting electric furnace and dust collecting process, the utility model device and conventional equipment relatively are described 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, and its efficient improves 31～36% than the circulation of single-stage evaporation organic Rankine, can also reach good environment protecting.
Claims (2)
1. the multistage organic Rankine circulation of electric furnace flue gas cogeneration special equipment, comprise combustion settling chamber, the waste heat switch room, booster fan, deduster, main air blower, aiutage, it is characterized in that: described combustion settling chamber is by the pipeline waste heat switch room that is linked in sequence, booster fan, deduster, main air blower, aiutage, described waste heat is equipped with the low-pressure stage evaporimeter in the switch room, the medium pressure grade evaporimeter, the hiigh pressure stage evaporimeter, the entrance point of low-pressure stage evaporimeter is connected with the high-pressure outlet end of low-pressure stage working medium force (forcing) pump, the port of export one tunnel of low-pressure stage evaporimeter is connected with the low pressure filling mouth of the organic turbine of band filling mouth behind pipeline, another road is connected with the entrance point of medium pressure grade working medium force (forcing) pump, the port of export of medium pressure grade working medium force (forcing) pump connects the medium pressure grade evaporimeter, the port of export one tunnel of medium pressure grade evaporimeter is connected with the middle pressure filling mouth of the organic turbine of band filling mouth behind pipeline, another road is connected with the entrance point of hiigh pressure stage working medium force (forcing) pump, the port of export of hiigh pressure stage working medium force (forcing) pump connects the hiigh pressure stage evaporimeter, the port of export of hiigh pressure stage evaporimeter is connected with the high-pressure admission cylinder of the organic turbine of band filling mouth behind pipeline, the bottom interface of the organic turbine of band filling mouth is connected by the air inlet of pipeline with cellular aluminium fin-plate type condenser, the liquid phase outlet of cellular aluminium fin-plate type condenser is connected with fluid reservoir by pipeline, fluid reservoir is connected with the low pressure inlet end of low-pressure stage working medium force (forcing) pump, the organic turbine of band filling mouth is connected with threephase generator, an end flange interface of cellular aluminium fin-plate type condenser is connected with water circulating pump, another end of cellular aluminium fin-plate type condenser connects lithium-bromide absorption-type refrigerating machine, lithium-bromide absorption-type refrigerating machine is connected with water circulating pump, constitute another loop, described booster fan is connected deduster in the lump with the outer discharge pipe that is connected the electric furnace top, deduster connects main air blower by pipeline, and main air blower is connected with aiutage.
2. the multistage organic Rankine circulation of electric furnace flue gas according to claim 1 cogeneration special equipment is characterized in that: adopting R290 is the circulation organic working medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201734785U CN203132373U (en) | 2013-03-28 | 2013-03-28 | Special equipment for multi-stage organic rankine cycle cogeneration of electric furnace smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201734785U CN203132373U (en) | 2013-03-28 | 2013-03-28 | Special equipment for multi-stage organic rankine cycle cogeneration of electric furnace smoke |
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| Publication Number | Publication Date |
|---|---|
| CN203132373U true CN203132373U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201734785U Expired - Fee Related CN203132373U (en) | 2013-03-28 | 2013-03-28 | Special equipment for multi-stage organic rankine cycle cogeneration of electric furnace smoke |
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| Country | Link |
|---|---|
| CN (1) | CN203132373U (en) |
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2013
- 2013-03-28 CN CN2013201734785U patent/CN203132373U/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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170525 Address after: 226321, Nantong, Jiangsu Tongzhou District two a three communities Patentee after: Jiangsu barium Construction Engineering Co., Ltd. Address before: 214181, No. 99, middle Yu Yan Road, former Chau Street, Wuxi, Jiangsu Patentee before: Wuxi Dongyou Environmental Science & Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20200328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |