CN103438743A - Phase change-dividing-wall-type combined heat exchange system and method for flue gas of heating furnace - Google Patents
Phase change-dividing-wall-type combined heat exchange system and method for flue gas of heating furnace Download PDFInfo
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- CN103438743A CN103438743A CN2013104066906A CN201310406690A CN103438743A CN 103438743 A CN103438743 A CN 103438743A CN 2013104066906 A CN2013104066906 A CN 2013104066906A CN 201310406690 A CN201310406690 A CN 201310406690A CN 103438743 A CN103438743 A CN 103438743A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention provides a phase change-dividing-wall-type combined heat exchange system and method for flue gas of a heating furnace. A shaft control reversing flue gate, a phase change air heat exchanger and a metal dividing-wall-type coal gas heat exchanger are connected in series in the flue channel of the heating furnace; the phase change air heat exchanger is divided into two heat exchange chambers through a baffle wall, and each heat exchange chamber is filled with a phase change heat storage material; high-temperature flue gas entering one heat exchange chamber releases heat to the phase change heat storage material, and after the phase change heat storage material is changed from the solid state to the liquid state, the flue gas enters the other heat exchange chamber through regulating the shaft control reversing flue gate for heat conversion; meanwhile, cold air enters the hot heat exchange chamber, and the phase change heat storage material is changed from the liquid state to the solid state and emits heat when being cooled; the temperature of the cold air rises to 600 DEG C above after the cold air absorbs heat and then the cold air is used for preheating combustion-supporting air of the heating furnace. According to the invention, the problem that the high-temperature side of an existing metal-air heat exchanger is easily burned is radically solved; the air preheating temperature can be improved greatly; the flue gas residual heat recovery efficiency can be improved; the preheating temperatures of air and coal gas can be stabilized; the service life of a heat exchanger system can be prolonged.
Description
Technical field
The invention belongs to the pre-heat recovery technology of industrial furnace field, relate in particular to a kind of phase transformation of the high-temperature flue gas for heater for rolling steel-dividing wall type combination heat-exchange system and heat-exchange method thereof.
Background technology
The heat that heater for rolling steel discharge flue gas is taken out of accounts for 35% left and right, accounts for the ratio maximum in heat loss.The flue gas waste heat recovery method generally adopted at present is: in stove tail flue, dividing wall type air heat exchanger and gas change heater are set, by flue gas waste heat recovery, the preheating simultaneously of the combustion air that the heating furnace for preheating burner is used or combustion air and coal gas, reduce the heating furnace burnup, saves the energy.Before the flue gas of discharging due to heating furnace enters air heat exchanger, temperature is generally 850 ℃ of left and right, a few row's heat exchanger tubes of heat exchanger high temperature side often are subject to that high temperature washes away, the hyperthermia radiation of stove tail walling of flue, and occur in actual motion that flue gas stream distributes unequal phenomenon, all can cause heat exchanger tube to damage.
For improving the heat exchanger life-span; generally take the air heat exchanger high temperature side adopt high temperature resistant containing Cr steel, crooked heat exchanger tube, heat exchanger tube on heat-resistant paint, change heat transfer structure inside and outside heat exchanger tube, increase the method such as cold wind protection tube group, dilution air is set simultaneously and in the flue gas of overtemperature, mixes cold wind.But heating furnace is after actual production operation a period of time, and being burned still appears in sky, gas change heater, preheat temperature does not reach some row problems such as design temperature.
The utility model patent of the patent No. 201020581040.7, disclosed is " gas change heater in heating furnace of steel rolling system ", takes to set up cool air hose, the blending flue gas reduces the discharge flue-gas temperature, solves gas preheater overtemperature prote problem.Although this method has solved the easy burning problems of heat exchanger, has lost flue gas heat, has reduced heat recovery efficiency.
In " energy supply for metallurgy " Vol24 No.3 " development of energy-efficient air heat exchanger for large-sized annular heating stove " literary composition in 2005, what propose is to adopt efficient cyclone and single distort belt insert material to replace light pipe in the air heat exchanger design of using at annular furnace, and the complex heat transfer coefficient of air heat exchanger is significantly improved.This heat exchanger structure complexity, increased air drag, can strengthen fan capacity, and this dividing wall type heat transfer rate is slow, defines heat transfer effect.
For the problems referred to above, the present invention proposes a kind of flue gas phase transformation-dividing wall type combination heat-exchange method, adopt the method for phase-change heat-exchange and two kinds of mode combinations of metal wall-type heat exchange, adopt the non-metallic inorganic salt phase-change material as heat absorption and heat release medium, utilize the latent heat of phase change of working media by the heat recovery of high-temperature flue gas, then by thermal release to cold air; Flue-gas temperature drops to below 450 ℃, then by metal dividing wall type heat exchanger preheating gas.Adopt this method, can cancel dilution air, when heating furnace discharge flue gas overtemperature reaches more than 900 ℃, also can directly reclaim heat.Reach and increase substantially flue gas waste heat recovery efficiency, improve the effect in the service life of gas change heater.
Summary of the invention
The invention provides a kind of flue gas of heating furnace phase transformation-dividing wall type combination heat-exchange system and method, its objective is and increase substantially the thermal efficiency that waste heat of flue gas of heating furnace reclaims, fundamentally solve conventional metals heat exchange of heat pipe easy burn-out, problem that organic efficiency is low.
The problem existed for prior art, the present invention proposes a kind of flue gas phase transformation-dividing wall type combination heat-exchange method, adopt the method for phase-change heat-exchange and two kinds of mode combinations of metal wall-type heat exchange, adopt the non-metallic inorganic salt phase-change material as heat absorption and heat release medium, utilize the latent heat of phase change of working media by the heat recovery of high-temperature flue gas, then by thermal release to cold air; Because latent heat of phase change is large, heat resisting temperature is high, and with the medium direct contact heat transfer, changed heat transfer heat exchange principle, heat exchange efficiency can increase substantially.900 ℃ of flue-gas temperatures can be dropped to below 450 ℃, then by metal dividing wall type heat exchanger preheating gas.Adopt this method, can cancel dilution air, when heating furnace discharge flue gas overtemperature reaches more than 900 ℃, also can directly reclaim heat.Reach and increase substantially flue gas waste heat recovery efficiency, improve the effect in the service life of gas change heater.Technical solution of the present invention is:
A kind of flue gas of heating furnace phase transformation-dividing wall type combination heat-exchange system, it is characterized in that, in the heating furnace flue, the flow of flue gas direction arranges a phase transformation air heat exchanger, an intermetallic wall type gas change heater of phase transformation air heat exchanger back series connection, be evenly equipped with the coal gas heat exchanger tube in intermetallic wall type gas change heater, the phase transformation air heat exchanger is divided into Heat Room A and the Heat Room B of two correspondences by partition wall, all be filled with phase change heat storage material in Heat Room A and Heat Room B, be provided with axle control commutation cigarette lock in phase transformation air heat exchanger front portion, form two exhaust gases passes by axle control commutation cigarette lock.
Described coal gas heat exchanger tube adopts the light pipe metallic heat exchanging tube.
A kind of flue gas of heating furnace phase transformation-dividing wall type combination heat-exchange method, its concrete heat transfer process is:
Be separated to form separately independently passage by fire-resisting partition between two Heat Rooms, flue gas can only enter in one of them Heat Room from one of them passage, the high-temperature flue gas of discharging from heating furnace, first flow into one of them Heat Room, the flue gas self heat is discharged to the phase change heat storage material in Heat Room, direct and phase change heat storage material carries out heat exchange, and the phase change heat storage material heat absorption reaches phase transition temperature and starts to be liquid state, heat is stored by Solid State Transformation; Through 9-11 minute, the temperature that goes out the phase transformation air heat exchanger drops to 450 ℃ of left and right; After heat exchange finishes, by regulating shaft control commutation cigarette lock, conversion flow of flue gas direction, make flue gas enter the another one Heat Room, carries out same heat conversion; Cold air enters in hot Heat Room simultaneously, phase change heat storage material runs into cold air and starts heat release, by liquid state, changed into solid-state, emit amount of heat in the phase change heat storage material phase transition process, after the cold air heat absorption, temperature is increased to more than 600 ℃, hot-air goes out the combustion air of phase transformation air heat exchanger for the heating furnace for preheating burner, and two Heat Rooms, by constantly alternately conversion, carry out the smoke pre-heating recovery continuously; And from the phase transformation air heat exchanger 450 ℃ of flue gases out, enter intermetallic wall type gas change heater, adopt metal tube wall-type heat exchange mode, flue gas is walked outside the coal gas heat exchanger tube, coal gas is walked in the coal gas heat exchanger tube, continuously flue gas heat is passed to cooled coal gas, makes gas temperature reach 280～300 ℃.
Described phase change heat storage material is sulfate Na
2sO
2, be with Al
2o
3, SiO
2ceramic material is carrier, adopts mixed-sintering method or spontaneous melting method of impregnation to make spherical or channel-type heat-storing material, and its phase transition temperature is 850～880 ℃, and latent heat of phase change is 83.73J.g
-1.
Compared with the prior art, beneficial effect of the present invention is:
The present invention discharges the characteristics of flue-gas temperature 850 ℃ of left and right in conjunction with heating furnace, arranged in series phase transformation air heat exchanger and dividing wall type gas change heater combination coupling in flue, adopt phase transformation air heat exchanger warm-up combustion-supporting air in the fume high-temperature side, be conducive to improve high-temperature flue gas waste heat recovery rate, fundamentally solved the problem that existing metallic air recuperator high temperature side easily is burned simultaneously.From the phase transformation air heat exchanger out, after flue-gas temperature drops to below 450 ℃, adopt intermetallic wall type gas change heater, further Mist heat recovering.Therefore the present invention can increase substantially air preheating temperature, improves flue gas waste heat recovery efficiency, and stable air and gas preheating temperature improve heat exchanger system service life.
The accompanying drawing explanation
Fig. 1 is flue gas phase transformation-dividing wall type combination heat-exchange system section of structure.
In figure: heating furnace flue 1, phase transformation air heat exchanger 2, intermetallic wall type gas change heater 3, Heat Room A4, Heat Room B5, partition wall 6, axle control commutation cigarette lock 7, phase change heat storage material 8, coal gas heat exchanger tube 9.
The specific embodiment
As seen from Figure 1, flue gas of heating furnace phase transformation of the present invention-dividing wall type combination heat-exchange system mainly is comprised of heating furnace flue 1, phase transformation air heat exchanger 2, intermetallic wall type gas change heater 3, Heat Room A4, Heat Room B5, partition wall 6, axle control commutation cigarette lock 7, phase change heat storage material 8, coal gas heat exchanger tube 9.
In heating furnace flue 1, along the flow of flue gas direction, a phase transformation air heat exchanger 2 is set, an intermetallic wall type gas change heater 3 of phase transformation air heat exchanger 2 back serial connections, be evenly equipped with coal gas heat exchanger tube 9 in intermetallic wall type gas change heater 3, coal gas heat exchanger tube 9 adopts the light pipe metallic heat exchanging tube.Phase transformation air heat exchanger 2 is divided into Heat Room A4 and the Heat Room B5 of two correspondences by partition wall 6, in Heat Room A4 and Heat Room B5, all be filled with phase change heat storage material 8, and phase change heat storage material 8 is sulfate Na
2sO
2, be with Al
2o
3, SiO
2ceramic material is carrier, adopts mixed-sintering method or spontaneous melting method of impregnation to make spherical or channel-type heat-storing material, and its phase transition temperature is 850～880 ℃, and latent heat of phase change is 83.73J.g
-1.Also be provided with axle control commutation cigarette lock 7 in the front portion of phase transformation air heat exchanger 2, by axle control commutation cigarette lock 7, form two exhaust gases passes.
Flue gas of heating furnace phase transformation of the present invention-dividing wall type combination heat-exchange method, its concrete heat transfer process is:
Be separated to form separately independently passage by fire-resisting partition 6 between Heat Room A4 and Heat Room B5, flue gas can only enter in one of them Heat Room from one of them passage, the high-temperature flue gas of discharging from heating furnace, first flow into one of them Heat Room, the flue gas self heat is discharged to the phase change heat storage material 8 in Heat Room, direct and phase change heat storage material 8 carries out heat exchange, and phase change heat storage material 8 heat absorptions reach phase transition temperature and start to be liquid state, heat is stored by Solid State Transformation, through 9-11 minute, the temperature that goes out phase transformation air heat exchanger 2 drops to 450 ℃ of left and right, after heat exchange finishes, by regulating shaft control commutation cigarette lock 7, conversion flow of flue gas direction, make flue gas enter the another one Heat Room, carries out same heat conversion, cold air enters in hot Heat Room simultaneously, phase change heat storage material 8 runs into cold air and starts heat release, by liquid state, changed into solid-state, emit amount of heat in phase change heat storage material 8 phase transition process, after the cold air heat absorption, temperature is increased to more than 600 ℃, hot-air goes out the combustion air of phase transformation air heat exchanger 2 for the heating furnace for preheating burner, two Heat Rooms are by constantly alternately conversion, carry out continuously the smoke pre-heating recovery, and from phase transformation air heat exchanger 2 450 ℃ of flue gases out, enter intermetallic wall type gas change heater 3, adopt metal tube wall-type heat exchange mode, flue gas is walked outside coal gas heat exchanger tube 9, coal gas is walked in coal gas heat exchanger tube 9, continuously flue gas heat is passed to cooled coal gas, make gas temperature reach 280～300 ℃.
More can find out implementation result of the present invention from actual comparing result.
One hot-rolling heating furnace actual heating capacity is 235t/h, former employing air, coal gas metal dividing wall type heat exchanger, it is 773 ℃ (after mixing cold wind) that flue gas enters the front temperature of heat exchanger, air preheating temperature is 452 ℃, the gas preheating temperature is 306 ℃, the air heat exchanger thermal efficiency 40.16%, temperature efficiency 58.47%; The gas change heater thermal efficiency 17.41%, temperature efficiency 53.68%, the overall heat exchange device thermal efficiency 52.57%.
After adopting phase transformation of the present invention-dividing wall type combination heat-exchange system, it is that 900 ℃ of (not mixing cold wind) air preheating temperatures can reach 700 ℃ that flue gas enters the front temperature of heat exchanger, and the gas preheating temperature reaches 263 ℃.Phase transformation air heat exchanger temperature efficiency can reach 78.65%, and the thermal efficiency is 56.33%, and dividing wall type gas change heater temperature efficiency is 58.50%, and the thermal efficiency is 15.20%, and the overall heat exchange device thermal efficiency is 65.10%.Table 1 improves front and back heat-exchange system index contrast for heating furnace:
Heat-exchange system index before and after table 1 improves
| The heat exchanger index | Original % | % of the present invention |
| The air heat exchanger temperature efficiency | 58.47 | 78.65 |
| The air heat exchanger thermal efficiency | 40.16 | 56.33 |
| The gas change heater temperature efficiency | 58.68 | 58.50 |
| The gas change heater thermal efficiency | 17.41 | 15.20 |
| The overall heat exchange device thermal efficiency | 52.57 | 65.10 |
From table 1, adopt heat-exchange system overall thermal efficiency of the present invention to improve 12.53%.After improving, due to flue gas, to advance heat exchange temperature unrestricted, therefore can improve the heat-exchange system life-span, and can cancel the flue dilution air, can also save the heating furnace investment cost thus simultaneously.
Claims (4)
1. flue gas of heating furnace phase transformation-dividing wall type combines heat-exchange system, it is characterized in that, in the heating furnace flue, the flow of flue gas direction arranges a phase transformation air heat exchanger, an intermetallic wall type gas change heater of phase transformation air heat exchanger back series connection, be evenly equipped with the coal gas heat exchanger tube in intermetallic wall type gas change heater, the phase transformation air heat exchanger is divided into Heat Room A and the Heat Room B of two correspondences by partition wall, all be filled with phase change heat storage material in Heat Room A and Heat Room B, be provided with axle control commutation cigarette lock in phase transformation air heat exchanger front portion, form two exhaust gases passes by axle control commutation cigarette lock.
2. flue gas of heating furnace phase transformation according to claim 1-dividing wall type combination heat-exchange system is characterized in that described coal gas heat exchanger tube adopts the light pipe metallic heat exchanging tube.
3. an application rights requires 1 described flue gas of heating furnace phase transformation-dividing wall type to combine the method for heat-exchange system, it is characterized in that, concrete heat transfer process is:
Be separated to form separately independently passage by fire-resisting partition between two Heat Rooms, flue gas can only enter in one of them Heat Room from one of them passage, the high-temperature flue gas of discharging from heating furnace, first flow into one of them Heat Room, the flue gas self heat is discharged to the phase change heat storage material in Heat Room, direct and phase change heat storage material carries out heat exchange, and the phase change heat storage material heat absorption reaches phase transition temperature and starts to be liquid state, heat is stored by Solid State Transformation; Through 9-11 minute, the temperature that goes out the phase transformation air heat exchanger drops to 450 ℃ of left and right; After heat exchange finishes, by regulating shaft control commutation cigarette lock, conversion flow of flue gas direction, make flue gas enter the another one Heat Room, carries out same heat conversion; Cold air enters in hot Heat Room simultaneously, phase change heat storage material runs into cold air and starts heat release, by liquid state, changed into solid-state, emit amount of heat in the phase change heat storage material phase transition process, after the cold air heat absorption, temperature is increased to more than 600 ℃, hot-air goes out the combustion air of phase transformation air heat exchanger for the heating furnace for preheating burner, and two Heat Rooms, by constantly alternately conversion, carry out the smoke pre-heating recovery continuously; And from the phase transformation air heat exchanger 450 ℃ of flue gases out, enter intermetallic wall type gas change heater, adopt metal tube wall-type heat exchange mode, flue gas is walked outside the coal gas heat exchanger tube, coal gas is walked in the coal gas heat exchanger tube, continuously flue gas heat is passed to cooled coal gas, makes gas temperature reach 280～300 ℃.
4. flue gas of heating furnace phase transformation according to claim 3-dividing wall type combination heat-exchange method is characterized in that described phase change heat storage material is sulfate Na
2sO
2, be with Al
2o
3, SiO
2ceramic material is carrier, adopts mixed-sintering method or spontaneous melting method of impregnation to make spherical or channel-type heat-storing material, and its phase transition temperature is 850～880 ℃, and latent heat of phase change is 83.73J.g
-1.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959032A (en) * | 2017-04-01 | 2017-07-18 | 中国科学院上海高等研究院 | A kind of high-temperature molten salt phase transformation stores heat-releasing device |
| CN109253451A (en) * | 2017-07-13 | 2019-01-22 | 鞍钢股份有限公司 | A kind of smoke backflow phase-change heat-exchange radiation pipe apparatus |
| CN109899123A (en) * | 2019-03-18 | 2019-06-18 | 上海电力学院 | A kind of gas turbine afterheat increasing efficiency device of phase-change temperature control |
| CN114777334A (en) * | 2022-05-25 | 2022-07-22 | 中冶赛迪工程技术股份有限公司 | Combined gas heating system and heating method |
| RU2786550C1 (en) * | 2022-04-19 | 2022-12-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" | Regenerative soaking pit |
| CN116182171A (en) * | 2023-03-23 | 2023-05-30 | 广东众大智能科技有限公司 | Waste gas incineration device and incineration control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066385U (en) * | 2011-03-29 | 2011-12-07 | 鞍钢股份有限公司 | Novel waste heat recovery and use device |
| CN102585775A (en) * | 2012-01-20 | 2012-07-18 | 中国科学院过程工程研究所 | High-temperature composite phase change heat storage material and preparation method thereof |
-
2013
- 2013-09-06 CN CN2013104066906A patent/CN103438743A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066385U (en) * | 2011-03-29 | 2011-12-07 | 鞍钢股份有限公司 | Novel waste heat recovery and use device |
| CN102585775A (en) * | 2012-01-20 | 2012-07-18 | 中国科学院过程工程研究所 | High-temperature composite phase change heat storage material and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959032A (en) * | 2017-04-01 | 2017-07-18 | 中国科学院上海高等研究院 | A kind of high-temperature molten salt phase transformation stores heat-releasing device |
| CN109253451A (en) * | 2017-07-13 | 2019-01-22 | 鞍钢股份有限公司 | A kind of smoke backflow phase-change heat-exchange radiation pipe apparatus |
| CN109899123A (en) * | 2019-03-18 | 2019-06-18 | 上海电力学院 | A kind of gas turbine afterheat increasing efficiency device of phase-change temperature control |
| RU2786550C1 (en) * | 2022-04-19 | 2022-12-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" | Regenerative soaking pit |
| CN114777334A (en) * | 2022-05-25 | 2022-07-22 | 中冶赛迪工程技术股份有限公司 | Combined gas heating system and heating method |
| CN116182171A (en) * | 2023-03-23 | 2023-05-30 | 广东众大智能科技有限公司 | Waste gas incineration device and incineration control method thereof |
| CN116182171B (en) * | 2023-03-23 | 2023-11-07 | 广东众大智能科技有限公司 | Waste gas incineration device and incineration control method thereof |
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Application publication date: 20131211 |