CN202145098U - Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace - Google Patents
Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace Download PDFInfo
- Publication number
- CN202145098U CN202145098U CN201120254742U CN201120254742U CN202145098U CN 202145098 U CN202145098 U CN 202145098U CN 201120254742 U CN201120254742 U CN 201120254742U CN 201120254742 U CN201120254742 U CN 201120254742U CN 202145098 U CN202145098 U CN 202145098U
- Authority
- CN
- China
- Prior art keywords
- waste heat
- flue gas
- heat
- electric furnace
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Abstract
Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of an electric furnace comprises a settling chamber, a thermal storage temperature equalizer, a waste heat exchange chamber, a dust remover, a main blower and an exhaust pipe, and is characterized in that the settling chamber is in sequential connection with the thermal storage temperature equalizer, the waste heat exchange chamber, the dust remover, the main blower and the exhaust pipe, the thermal storage temperature equalizer comprises a fume inlet, heat retainers, soot cleaning devices, a fume outlet and an ash hopper, the heat retainers is arranged between the fume inlet and the fume outlet, the soot cleaning devices are arranged among the heat retainers, an evaporator with one end connected with a working medium circulating pump and the other end connected with a steam turbine is mounted in the waste heat exchange chamber, one end of the steam turbine is connected with a condenser, the other end of the steam turbine is connected with a generator, and one end of the condenser is connected with the working medium circulating pump. The special equipment is characterized in that isobutane is adopted as the circulating organic working medium. In the utility model, the thermal storage temperature equalizer achieves peak load shifting of flue-gas temperature, reduces the temperature fluctuation range and can reclaim heat energy in flue gas to the utmost extent and convert the reclaimed heat energy into electric energy.
Description
Technical field
The utility model relates to a kind of device for generating power by waste heat, and particularly organic Rankine cogeneration of electric furnace high temperature alternation flue gas and dust-removing device special belong 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 the electric furnace steel making flue-gas temperature is very high, generally about 1250 ℃, dust concentration reaches 18g/Nm to the temperature of entering pipeline after capturing
3, accounting for more than 75% of dust total amount less than the ash of 8um, 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-pipe heat exchanger has successfully applied in the flue gas waste heat recovery of electric 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 electric 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 electric furnace flue gas temperature fluctuation amplitude is provided, and 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 simultaneously the exhaust temperature of flue gas; Improve dust collection capacity, obtain good dust removing effects, dust emission concentration is less than 5mg/Nm
3
The technical scheme that the utility model adopted is following: flue gas organic Rankine cogeneration of electric furnace high temperature alternation and dust-removing device special; Comprise combustion settling chamber, heat-accumulating and temperature-equalizing device, waste heat switch room, deduster, main air blower, aiutage; It is characterized in that: said combustion settling chamber is through pipeline be linked in sequence heat-accumulating and temperature-equalizing device, waste heat switch room, deduster, main air blower, aiutage; Said heat-accumulating and temperature-equalizing device comprises gas approach, carbon aluminium composite material heat storage, sound wave ash cleaner, exhanst gas outlet and ash bucket; Said carbon aluminium composite material heat storage is arranged between gas approach and the exhanst gas outlet, and said sound wave ash cleaner segmentation is arranged between the carbon aluminium composite material heat storage.Said waste heat is equipped with the one-time surface evaporimeter in the switch room; The entrance point of one-time surface evaporimeter is connected with the high-pressure outlet end of working medium circulating pump; The port of export of one-time surface evaporimeter 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 shell-and-tube cooler through pipeline, and the liquid phase outlet of shell-and-tube cooler 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 shell-and-tube cooler is connected with water pump; Another end of shell-and-tube cooler connects cooling tower, and cooling tower is connected with water pump, constitutes a loop.
It is further characterized in that: adopting iso-butane is the circulation organic working medium.
Because the electric 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 enters the waste heat switch room, 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. one-time surface evaporimeter 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. electric furnace, 2. water-cooled sliding sleeve, 3. combustion settling chamber, 4. heat-accumulating and temperature-equalizing device, 5. gas approach; 6. carbon aluminium composite material heat storage, 7. ash bucket, 8. sound wave ash cleaner, 9. exhanst gas outlet, 10. waste heat switch room; 11. the one-time surface evaporimeter, 12. low boiling working fluid steam turbines, 13. threephase generators, 14. working medium circulating pumps, 15. water pumps; 16. shell-and-tube cooler, 17. cooling towers, 18. dedusters, 19. main air blowers, 20. aiutages.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Flue gas organic Rankine cogeneration of electric furnace high temperature alternation and dust-removing device special comprise combustion settling chamber 3, heat-accumulating and temperature-equalizing device 4, waste heat switch room 10, deduster 18, main air blower 19, aiutage 20 in the utility model; It is characterized in that: said combustion settling chamber 3 is through pipeline be linked in sequence heat-accumulating and temperature-equalizing device 4, waste heat switch room 10, deduster 18, main air blower 19, aiutage 20; Said heat-accumulating and temperature-equalizing device 4 comprises gas approach 5, carbon aluminium composite material heat storage 6, sound wave ash cleaner 8, exhanst gas outlet 9 and ash bucket 7; Said carbon aluminium composite material heat storage 6 is arranged between gas approach 5 and the exhanst gas outlet 9, and said sound wave ash cleaner 8 segmentations are arranged between the carbon aluminium composite material heat storage 6.In the said waste heat switch room 10 one-time surface evaporimeter 11 is installed; The entrance point of one-time surface evaporimeter 11 is connected with the high-pressure outlet end of working medium circulating pump 14; The port of export of one-time surface evaporimeter 11 is connected with the upper flange interface of low boiling working fluid steam turbine 12 behind pipeline; The bottom interface of low boiling working fluid steam turbine 12 is connected with the air inlet of shell-and-tube cooler 16 through pipeline, and the liquid phase outlet of shell-and-tube cooler 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 shell-and-tube cooler 16 is connected with water pump 15; Another end of shell-and-tube cooler 16 connects cooling tower 17, and cooling tower 17 is connected with water pump 15, constitutes a loop.
Said low boiling working fluid is an iso-butane; The power pressure that gets into the low boiling working fluid steam turbine is 2.8MPa, and when the power pressure after the acting of expanding was 0.35MPa, system's electromotive power output was 3000KW; Rankine cycle efficient is 17.5%, and the flue-gas temperature that system discharges is 70 ℃.
The course of work of the utility model: 100t/h electric furnace 1 flue gas flow 28 * 10
4Nm3/h, 1250 ℃ of temperature, dust content 18g/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, after the heat-accumulating and temperature-equalizing effect through 6 pairs of high-temperature flue gas of carbon aluminium composite material heat storage in the heat-accumulating and temperature-equalizing device 4; Flue gas gets in the waste heat switch room 10, and high-temperature flue gas is emitted heat, and temperature is reduced to 70 ℃; Get into deduster 18, dust concentration is less than 5mg/Nm3 after dedusting.Be pressed into aiutage 20 by main air blower 19 and enter atmosphere.Simultaneously; Low boiling working fluid drives through working medium pump 14; Absorb the heat of fume afterheat carrier earlier in the one-time surface evaporimeter 11 in being installed on the waste heat switch room, become saturated vapor, behind pressure regulator valve; The working substance steam acting of in low boiling working fluid steam turbine 12, expanding, and drive threephase generator 13 generatings.The working substance steam of discharging from low boiling working fluid steam turbine 12 is condensed into saturated liquid by shell-and-tube cooler 16, sends in the one-time surface evaporimeter 11 circulation of a beginning new round after by working medium pump 14 worker quality liquid being pressurizeed again.From the recirculated water that shell-and-tube cooler 16 comes out,, send in the shell-and-tube cooler 16 circulation of a beginning new round through cooling tower 17 coolings through water pump 15.The electric energy that system sends is a three-phase alternating current, and rated voltage is 380V, incorporates electrical network in the factory into through after the 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 electric furnace flue gas.With cogeneration of 100t/h steel-smelting electric 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)
1. organic Rankine cogeneration of electric furnace high temperature alternation flue gas and dust-removing device special; Comprise combustion settling chamber, heat-accumulating and temperature-equalizing device, waste heat switch room, deduster, main air blower, aiutage, it is characterized in that: said combustion settling chamber is through pipeline be linked in sequence heat-accumulating and temperature-equalizing device, waste heat switch room, deduster, main air blower, aiutage.
2. electric furnace high temperature alternation flue gas organic Rankine cogeneration according to claim 1 and dust-removing device special; It is characterized in that: said heat-accumulating and temperature-equalizing device comprises gas approach, carbon aluminium composite material heat storage, sound wave ash cleaner, exhanst gas outlet and ash bucket; Said carbon aluminium composite material heat storage is arranged between gas approach and the exhanst gas outlet, and said sound wave ash cleaner segmentation is arranged between the carbon aluminium composite material heat storage.
3. electric furnace high temperature alternation flue gas organic Rankine cogeneration according to claim 1 and dust-removing device special; It is characterized in that: said waste heat is equipped with the one-time surface evaporimeter in the switch room; The entrance point of one-time surface evaporimeter is connected with the high-pressure outlet end of working medium circulating pump, and the port of export of one-time surface evaporimeter is connected with the upper flange interface of steam turbine behind pipeline, and the bottom interface of low boiling working fluid steam turbine is connected with the air inlet of shell-and-tube cooler through pipeline; The liquid phase outlet of shell-and-tube cooler is connected with the low pressure inlet end of working medium circulating pump through pipeline; The low boiling working fluid steam turbine is connected with threephase generator, and an end flange interface of shell-and-tube cooler is connected with water pump, and another end of shell-and-tube cooler connects cooling tower; Cooling tower is connected with water pump, constitutes a loop.
4. electric furnace high temperature alternation flue gas organic Rankine cogeneration according to claim 3 and dust-removing device special is characterized in that: adopting iso-butane is the circulation organic working medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254742U CN202145098U (en) | 2011-07-19 | 2011-07-19 | Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254742U CN202145098U (en) | 2011-07-19 | 2011-07-19 | Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202145098U true CN202145098U (en) | 2012-02-15 |
Family
ID=45581029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120254742U Expired - Fee Related CN202145098U (en) | 2011-07-19 | 2011-07-19 | Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202145098U (en) |
-
2011
- 2011-07-19 CN CN201120254742U patent/CN202145098U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202470793U (en) | Equipment special for using waste heat of high dust content flue gas of submerged arc furnace in cascade mode and removing dust | |
| CN202145097U (en) | Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace | |
| CN201844699U (en) | Electric furnace smoke waste heat power generation device with heat accumulation temperature equalization device | |
| CN103836987A (en) | Flue gas waste heat power-generation energy-conservation and dust-removal method for electric furnace with liquid storage tank | |
| CN103383195A (en) | Waste heat utilization and dust removing method for electric furnace flue gas with thermal storage soaking device | |
| CN103017553A (en) | Regenerative submerged arc furnace flue gas waste heat power generation method | |
| CN202470794U (en) | Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace | |
| CN201837260U (en) | Electric furnace flue gas organic Rankine cycle waste heat power generation and dust removing special device | |
| CN202145099U (en) | Flue-gas organic Rankine waste heat power generation device with thermal storage temperature equalizer for metallurgical furnace | |
| CN201837261U (en) | Special device for power generation by using high-temperature high-dust-content flue gas waste heat in metallurgical furnace | |
| CN202145098U (en) | Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace | |
| CN202747822U (en) | Special device for high-temperature alternating smoke gas residual heat power generation, energy conservation and dust removal of metallurgical furnace | |
| CN202915738U (en) | Special equipment for cogeneration, energy saving and dust removing of flue gas of semi-closed electric furnace | |
| CN202915733U (en) | Special energy-saving dust-removing equipment for generating power by using high-temperature flue gas from metallurgical furnace | |
| CN203116545U (en) | High-temperature flue gas waste heat power generation special-purpose device for cupola furnace | |
| CN202470792U (en) | Metallurgical furnace high-temperature flue afterheat step utilizing and dust-removing special equipment | |
| CN202149707U (en) | Electric furnace smoke temperature equalizing type organic Rankine waste heat generating dust removal special equipment | |
| CN202171401U (en) | Organic Rankine waste heat power-generating energy-saving dust-removing specialized equipment for high-temperature alternate flue gas of metallurgical furnace | |
| CN103017550A (en) | Power generation and dedusting method by utilizing waste heat of high-temperature alternating exhaust gas in electric furnace through organic rankine cycle | |
| CN104748562A (en) | Cupola smoke temperature uniformizing type waste heat power generation, energy conservation and dust removal method | |
| CN202915737U (en) | Special equipment for waste heat power generation, energy conservation and dust removal for high-temperature flue gas of electric furnace | |
| CN103836989A (en) | Flue gas waste heat power-generation energy-conservation and dust-removal method for electric furnace with thermal storage temperature evening device | |
| CN202171400U (en) | Energy-saving dust removal special device capable of generating power by waste heat of exhaust fume in electric furnace | |
| CN202747821U (en) | Metallurgical furnace smoke organic Rankine cycle waste heat power generation energy-saving dedusting special equipment | |
| CN203116541U (en) | High dust-content flue gas waste heat power generation device for submerged arc furnace |
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 |