CN202470794U - Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace - Google Patents
Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace Download PDFInfo
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- CN202470794U CN202470794U CN2012200932089U CN201220093208U CN202470794U CN 202470794 U CN202470794 U CN 202470794U CN 2012200932089 U CN2012200932089 U CN 2012200932089U CN 201220093208 U CN201220093208 U CN 201220093208U CN 202470794 U CN202470794 U CN 202470794U
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- 239000003517 fume Substances 0.000 title claims abstract description 14
- 239000002918 waste heat Substances 0.000 title abstract description 23
- 239000000428 dust Substances 0.000 title abstract description 19
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000009835 boiling Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 238000005338 heat storage Methods 0.000 claims description 8
- 230000035939 shock Effects 0.000 claims description 7
- 239000007791 liquid phase Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 44
- 239000003546 flue gas Substances 0.000 description 44
- 238000011084 recovery Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 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
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses equipment special for waste heat cascade utilization and dust removal of the high-temperature alternation fume of an electric furnace. The equipment comprises a settling chamber, a heat accumulating temperature equalizer, a high-temperature heat pipe evaporator, a medium and low temperature waste heat exchange chamber, a dust remover, a main fan and an exhaust cylinder. The equipment is characterized in that the settling chamber is sequentially connected with the heat accumulating temperature equalizer, the high-temperature heat pipe evaporator, the medium and low temperature waste heat exchange chamber, the dust remover, the main fan and the exhaust cylinder; the heat accumulating temperature equalizer comprises heat accumulators, an ash removal device and an ash hopper; the ash removal device is arranged between the heat accumulators; the high-temperature heat pipe evaporator is connected with a steam pocket through a pipeline; the steam pocket is connected with a steam heat accumulator; an evaporator is arranged in the medium and low temperature waste heat exchange chamber; one end of the evaporator is connected with a working medium circulating pump, and the other end of the evaporator is connected with a steam turbine; and one end of the steam turbine is connected with a condenser, and the other end of the steam turbine is connected with a generator. The equipment is characterized in that a circulating organic working medium employs R245fa. By the equipment, the waste heat cascade utilization of the fume of the electric furnace can be realized, and heat energy in the fume is recovered to the greatest extent and converted into high-grade electric energy.
Description
Technical field
The utility model relates to a kind of residual heat using device, and particularly electric furnace high temperature alternation fume afterheat cascade utilization 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 exhaust heat stepped use device 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/Nm3.
The technical scheme that the utility model adopted is following: electric furnace high temperature alternation fume afterheat cascade utilization and dust-removing device special; Comprise combustion settling chamber, heat-accumulating and temperature-equalizing device, high-temperature heat pipe evaporimeter, middle-low temperature 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, high-temperature heat pipe evaporimeter, middle-low temperature heat switch room, deduster, main air blower, aiutage; Said heat-accumulating and temperature-equalizing device comprises carbon ceramic composite material heat storage, shock wave deashing device and ash bucket; The segmentation of said shock wave deashing device is arranged between the carbon ceramic composite material heat storage; Said high-temperature heat pipe evaporimeter connects drum through pipeline, and drum connects steam accumulator through pipeline.Said middle-low temperature 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 R245fa 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 advances the high-temperature heat pipe evaporimeter, because the flue-gas temperature peak value reduces, the investment of high-temperature heat pipe evaporimeter is reduced; The flue-gas temperature fluctuating range reduces, and then helps improving the stability of high-temperature heat pipe evaporimeter, increases the service life.
The advantage of the utility model is:
1. adopt the high-temperature heat pipe evaporimeter to reclaim the waste heat of electric furnace high-temperature flue gas, the waste heat that low-temperature flue gas in the electric furnace is reclaimed in low boiling working fluid organic Rankine circulation cogeneration, realize the exhaust heat stepped utilization of electric furnace flue gas;
2. can alleviate the rapid drawdown that rises sharply of flue-gas temperature, 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. high-temperature heat pipe evaporimeter; 6. middle-low temperature heat switch room, 7. deduster, 8. main air blower, 9. aiutage, 10. carbon ceramic composite material heat storage, 11. shock wave deashing devices; 12. ash bucket, 13. drums, 14. steam accumulators, 15. one-time surface evaporimeters, 16. low boiling working fluid steam turbines; 17. threephase generator, 18. working medium circulating pumps, 19. water pumps, 20. shell-and-tube coolers, 21. cooling towers.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Electric furnace high temperature alternation fume afterheat cascade utilization and dust-removing device special comprise combustion settling chamber 3, heat-accumulating and temperature-equalizing device 4, high-temperature heat pipe evaporimeter 5, middle-low temperature heat switch room 6, deduster 7, main air blower 8, aiutage 9 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, high-temperature heat pipe evaporimeter 5, middle-low temperature heat switch room 6, deduster 7, main air blower 8, aiutage 9; Said heat-accumulating and temperature-equalizing device 4 comprises carbon ceramic composite material heat storage 10, shock wave deashing device 11 and ash bucket 12, and said shock wave deashing device 11 segmentations are arranged between the carbon ceramic composite material heat storage 10.Said high-temperature heat pipe evaporimeter 5 connects drum 13 through pipeline, and drum 13 connects steam accumulator 14 through pipeline.In the said middle-low temperature heat switch room 6 one-time surface evaporimeter 15 is installed; The entrance point of one-time surface evaporimeter 15 is connected with the high-pressure outlet end of working medium circulating pump 18; The port of export of one-time surface evaporimeter 15 is connected with the upper flange interface of low boiling working fluid steam turbine 16 behind pipeline; The bottom interface of low boiling working fluid steam turbine 16 is connected with the air inlet of shell-and-tube cooler 20 through pipeline, and the liquid phase outlet of shell-and-tube cooler 20 is connected with the low pressure inlet end of working medium circulating pump 18 through pipeline, and low boiling working fluid steam turbine 16 is connected with threephase generator 17; An end flange interface of shell-and-tube cooler 20 is connected with water pump 19; Another end of shell-and-tube cooler 20 connects cooling tower 21, and cooling tower 21 is connected with water pump 19, constitutes a loop.
Said low boiling working fluid is R245fa; The power pressure that gets into the low boiling working fluid steam turbine is 1.8MPa, and when the power pressure after the acting of expanding was 0.25MPa, system's electromotive power output was 1000KW; 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
4Nm
3/ h, 1250 ℃ of temperature, dust content 18g/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; 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 10 pairs of high-temperature flue gas of carbon ceramic composite material heat storage in the heat-accumulating and temperature-equalizing device 4, flue gas gets into high-temperature heat pipe evaporimeter 5, and the water in the drum 13 produces steam entering drum 13 after in high-temperature heat pipe evaporimeter 5, absorbing the high-temperature flue gas waste heat; Steam in the drum 13 gets into steam accumulator 14 through pipeline, supplies to stablize outward through regulating the back, steam continuous, the parameter The profile is used for generating electricity.High-temperature flue gas becomes middle low-temperature flue gas after 5 heat exchange of high-temperature heat pipe evaporimeter, get in the middle-low temperature heat switch room 6, and middle low-temperature flue gas is emitted heat, and temperature is reduced to 70 ℃, gets into deduster 7, dust concentration 5mg/Nm after dedusting
3, be pressed into aiutage 9 by main air blower 8 and enter atmosphere.Simultaneously; Low boiling working fluid drives through working medium pump 18; Absorb the heat of fume afterheat carrier earlier in the one-time surface evaporimeter 15 in being installed on the middle-low temperature heat switch room, become saturated vapor, behind pressure regulator valve; The working substance steam acting of in low boiling working fluid steam turbine 16, expanding, and drive threephase generator 17 generatings.The working substance steam of discharging from low boiling working fluid steam turbine 16 is condensed into saturated liquid by shell-and-tube cooler 20, sends in the one-time surface evaporimeter 15 circulation of a beginning new round after by working medium pump 18 worker quality liquid being pressurizeed again.From the recirculated water that shell-and-tube cooler 20 comes out,, send in the shell-and-tube cooler 20 circulation of a beginning new round through cooling tower 21 coolings through water pump 19.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 exhaust heat stepped use device, improve the stability of exhaust heat stepped use device, and can dispose all kinds of UTILIZATION OF VESIDUAL HEAT IN equipment safely.
The maximum characteristics of this device are to adopt the high-temperature heat pipe evaporimeter to reclaim the waste heat of electric furnace high-temperature flue gas, the waste heat that low-temperature flue gas in the electric furnace is reclaimed in low boiling working fluid organic Rankine circulation cogeneration, realize the exhaust heat stepped utilization of electric furnace flue gas.With 100t/h steel-smelting electric furnace UTILIZATION OF VESIDUAL HEAT IN 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 utility model can be realized the exhaust heat stepped utilization of electric furnace flue gas, and the heat energy that reclaims to greatest extent in the flue gas is converted into the high-grade electric energy, can also reach good environment protecting.
Claims (5)
1. electric furnace high temperature alternation fume afterheat cascade utilization and dust-removing device special; Comprise combustion settling chamber, heat-accumulating and temperature-equalizing device, high-temperature heat pipe evaporimeter, middle-low temperature 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, high-temperature heat pipe evaporimeter, middle-low temperature heat switch room, deduster, main air blower, aiutage.
2. electric furnace high temperature alternation fume afterheat cascade utilization according to claim 1 and dust-removing device special; It is characterized in that: said heat-accumulating and temperature-equalizing device comprises carbon ceramic composite material heat storage, shock wave deashing device and ash bucket, and the segmentation of said shock wave deashing device is arranged between the carbon ceramic composite material heat storage.
3. electric furnace high temperature alternation fume afterheat cascade utilization according to claim 1 and dust-removing device special is characterized in that: said high-temperature heat pipe evaporimeter connects drum through pipeline, and drum connects steam accumulator through pipeline.
4. electric furnace high temperature alternation fume afterheat cascade utilization according to claim 1 and dust-removing device special; It is characterized in that: said middle-low temperature 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.
5. electric furnace high temperature alternation fume afterheat cascade utilization according to claim 4 and dust-removing device special is characterized in that: adopting R245fa is the circulation organic working medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200932089U CN202470794U (en) | 2012-03-08 | 2012-03-08 | Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200932089U CN202470794U (en) | 2012-03-08 | 2012-03-08 | Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace |
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| Publication Number | Publication Date |
|---|---|
| CN202470794U true CN202470794U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200932089U Expired - Lifetime CN202470794U (en) | 2012-03-08 | 2012-03-08 | Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace |
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| CN (1) | CN202470794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941959A (en) * | 2022-07-21 | 2022-08-26 | 秦皇岛信能能源设备有限公司 | Waste heat island system based on wheel hub production line |
-
2012
- 2012-03-08 CN CN2012200932089U patent/CN202470794U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941959A (en) * | 2022-07-21 | 2022-08-26 | 秦皇岛信能能源设备有限公司 | Waste heat island system based on wheel hub production line |
| CN114941959B (en) * | 2022-07-21 | 2022-10-04 | 秦皇岛信能能源设备有限公司 | Waste heat island system based on wheel hub production line |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUXI DONGYOU ENVIRONMENTAL PROTECTION TECHNOLOGY C Free format text: FORMER OWNER: WANG ZHENGXIN Effective date: 20121023 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214021 WUXI, JIANGSU PROVINCE TO: 214181 WUXI, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20121023 Address after: 214181, No. 99, middle Yu Yan Road, former Chau Street, Wuxi, Jiangsu Patentee after: Wuxi Dongyou Environmental Science & Technology Co., Ltd. Address before: 214021 Jiangnan New South District, Jiangsu City, Wuxi province 58-402 Patentee before: Wang Zhengxin |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |