CN102095200A - Double heat accumulation type high-temperature oxygen-deficient combustor with oxygen-enriched air supply - Google Patents
Double heat accumulation type high-temperature oxygen-deficient combustor with oxygen-enriched air supply Download PDFInfo
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- CN102095200A CN102095200A CN2011100645402A CN201110064540A CN102095200A CN 102095200 A CN102095200 A CN 102095200A CN 2011100645402 A CN2011100645402 A CN 2011100645402A CN 201110064540 A CN201110064540 A CN 201110064540A CN 102095200 A CN102095200 A CN 102095200A
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- oxygen
- enriched air
- gas
- flue gas
- spout
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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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
Abstract
The invention relates to a double heat accumulation type high-temperature oxygen-deficient combustor with oxygen-enriched air supply, belonging to the technical field of combustors. The combustor provided by the invention comprises a gas inlet/flue gas outlet, an oxygen-enriched air inlet/flue gas outlet, an oxygen-enriched air heat accumulator box, an oxygen-enriched air nozzle brick, a gas nozzle brick, a gas heat accumulator box, a gas nozzle, a flue gas circulating channel, an oxygen-enriched air and flue gas mixture nozzle, a flue gas reflux inlet and a flue gas reflux nozzle brick. The invention has the advantages that oxygen-enriched air is utilized to supply air, thereby reducing flue gas to bring waste heat and enhancing the heat transfer efficiency in a furnace; a heat accumulator is utilized to recycle the waste heat of the flue gas, thereby preheating combustion air and gas; simultaneously, high-temperature oxygen-deficient combustion conditions are realized through a special structural design; the oxidizing atmosphere in an industrial furnace is weakened to greatly reduce the oxidizing burn-out rate of a heated material, thereby solving the problems of high energy consumption, low yield and low emission of nitrogen oxides of the industrial furnace; and non-flammable fuel can be fully combusted.
Description
Technical field
The invention belongs to technical field of burner, a kind of double heat storage type High Temperature Air Combustion device of oxygen enrichment air feed is provided, thereby realize that burner reduces the discharging of oxynitrides again in the time of energy-saving and cost-reducing.
Background technology
Utilize air-breathing in the traditional combustion, about 79% nitrogen does not participate in burning in the combustion air, forms flue gas on the contrary and takes away a part of heat that burning produces.And oxygen enrichment and pure oxygen burning technology use oxygen-enriched air or pure oxygen are combustion-supporting, have reduced the nitrogen in the flue gas, have fundamentally reduced the waste heat that flue gas is taken away; Improved triatomic molecule (CO in the furnace gas simultaneously
2, H
2O) content makes that radiation heat transfer is strengthened in the stove, has improved furnace heat transfer efficient, has reduced fuel consumption, but simultaneously because the flame temperature height, makes the oxidization burning loss height, and heating power type oxynitrides growing amount rolls up.
The heat-storage type burner utilization is integrated into heat storage in the burner as intermediate medium, reclaim fume afterheat, warm-up combustion-supporting air and combustion gas, the temperature of preheated air is general only than advancing low 100～150 ℃ of heat storage flue-gas temperature, smog discharge temperature has only 150 ℃, maximum magnitude has reclaimed the waste heat in the flue gas, and has improved the ignition temperature of low calorie fuels.
It is combustion-supporting that oxygen enrichment is used for heat-storage type burner, on the one hand by reducing exhaust gas volumn to reduce the heat that flue gas is taken away, maximum magnitude has reclaimed the waste heat in the flue gas on the other hand, can further improve the thermal efficiency, but simultaneously because the raising of combustion air oxygen content and preheat temperature, the fuel combustion temperature further improves, and oxidization burning loss and oxynitrides production problem are further aggravated.
High Temperature Air Combustion mode that still can smooth combustion under the oxygen deprivation concentration conditions, oxygen concentration is low in the stove, burning evenly, furnace temperature evenly and be lower than the generation temperature of heating power type oxynitrides has reached the effect that oxidization burning loss is low, oxynitrides is low.
Therefore; invent a kind of oxygen enrichment air feed; heat storage preheated-combustion-supporting wind and combustion gas; reclaim fume afterheat; can realize simultaneously the burner of High Temperature Air Combustion; reduce being heated workpiece oxidization burning loss and oxynitrides discharging when maximum magnitude is improved the combustion system thermal efficiency, energy-saving and cost-reducing and environmental protection is significant to industrial production.
Summary of the invention
The double heat storage type High Temperature Air Combustion device that the purpose of this invention is to provide a kind of oxygen enrichment air feed, utilize the oxygen-enriched air air feed, reduce flue gas and take away waste heat, strengthen furnace heat transfer efficient, utilize heat storage to reclaim fume afterheat, warm-up combustion-supporting air and combustion gas, the while special structural design, realize the High Temperature Air Combustion condition, oxidizing atmosphere in the reduction industrial furnace is to reduce the material oxidization burning loss rate that is heated significantly, thereby solve the problem of industrial furnace high energy consumption, low lumber recovery and oxynitrides discharging, and make difficult combustion fuel combustion abundant.
The present invention includes fuel gas inlet/exhanst gas outlet 1, oxygen-enriched air import/exhanst gas outlet 2, oxygen-enriched air heat storage case 3, oxygen-enriched air spout brick 4, combustion gas spout brick 5, regenerator gas body case 6, combustion gas spout 7, flue gas recirculation passage 8, oxygen-enriched air and flue gas gaseous mixture spout 9, smoke backflow mouth 10, smoke backflow spout brick 11.Fuel gas inlet/exhanst gas outlet 1 is connected with the pipeline of the gas outlet/smoke inlet of reversal valve, oxygen-enriched air import/exhanst gas outlet 2 is connected with the pipeline of the oxygen-enriched air outlet/exhanst gas outlet of reversal valve, fuel gas inlet/exhanst gas outlet 1 is connected to burner side by side with oxygen-enriched air import/exhanst gas outlet 2, after oxygen-enriched air heat storage case 3 is positioned at oxygen-enriched air import/exhanst gas outlet 2, oxygen-enriched air heat storage case 3 is connected with oxygen-enriched air spout brick 4, flue gas recirculation passage 8, oxygen enrichment implication and flue gas gaseous mixture spout 9 are arranged in oxygen-enriched air spout brick 4, smoke backflow spout brick 11 is positioned at oxygen-enriched air spout brick 4 peripheries, the C shape passage that smoke backflow spout brick 11 and oxygen-enriched air spout brick are 4 constitutes smoke backflow mouth 10, after regenerator gas body case 6 is positioned at fuel gas inlet/exhanst gas outlet 1, regenerator gas body case 6 is connected with combustion gas spout brick 5, and combustion gas spout 7 is arranged in combustion gas spout brick 5.
Burner of the present invention utilizes oxygenized air combustion supporting, thereby reduces the content of nitrogen in the flue gas, reduces the waste heat that flue gas is taken away from the source, improves triatomic molecule (CO in the furnace gas simultaneously
2, H
2O) content improves the furnace gas blackness, strengthens radiation heat transfer, improves the efficiency of heating surface; Adopt two heat storage types, utilize fume afterheat preheating oxygen-enriched air and combustion gas, smog discharge temperature is reduced to about 150 ℃ (when flue-gas temperature was lower than 150 ℃, the water capacity in the flue gas was easily separated out with sulfur in smoke and formed sulfuric acid corrosion equipment), so maximum magnitude has reclaimed the waste heat in the flue gas; Inner flue gas of the stove refluxes, reduce the oxygen concentration of oxygen-enriched air, realize the furnace high-temperature combustion with meagre oxygen, ignition temperature is lower than the generation temperature of heating power type oxynitrides, and special structural design makes burner still can realize stable combustion with meagre oxygen under the condition of different oxygen content air feeds simultaneously.Under the control of reversal valve, burner divides two duties: fired state and smoke evacuation state.General 30s～45s, change once to.During fired state, oxygen-enriched air enters oxygen enrichment heat storage case 3 by import 2, with the heat storage heat exchange in the oxygen enrichment heat storage case 3, absorbs the fume afterheat that heat storage stores, and temperature improves, expanded by heating, and momentum increases.Under the oxygen-enriched air effect that obtains higher momentum, flue gas recirculation passage 8 places form negative pressure, entrainment inner flue gas of the stove by smoke backflow mouth 10.Inner flue gas of the stove is with after oxygen-enriched air mixes, and oxygen concentration reduces, high-temperature flue gas preheating oxygen-enriched air once more simultaneously, and the high temperature oxygen-deficient mixture sprays from oxygen-enriched air and flue gas gaseous mixture spout 9.Combustion gas enters the heat storage heat exchange in burner and the regenerator gas body case 6 from fuel gas inlet 1, improve temperature and momentum, from combustion gas spout 7 ejection at a high speed, with gaseous mixture mixed combustion gradually.Flue gas enters oxygen-enriched air heat storage case 3, regenerator gas body case 6 respectively by combustion gas spout 7 and gaseous mixture spout 9 during the smoke evacuation state, with heat storage heat exchange wherein, makes the waste heat in the heat storage storage flue gas.
Advantage of the present invention and good effect:
Special feature of the present invention is to adopt the oxygen enrichment air feed, has reduced the nitrogen content in the flue gas, has improved triatomic molecule (CO in the furnace gas simultaneously
2, H
2O) content, thus reduce the waste heat that flue gas takes away and improved heat exchange efficiency in the stove; The heat storage that employing is integrated in the burner carries out two accumulation of heats to oxygen-enriched air and combustion gas, and the limit reclaims the waste heat of flue gas, has improved the ignition temperature of low calorie fuels simultaneously; By the optimization on structural improvement and the parameter, improved the flow velocity of oxygen-enriched air, flue gas recirculation passage place has formed bigger negative pressuren zone, the backflow flue gas can need not any power set and enter the oxygen-enriched air passage under suction function, high-temperature flue gas enter the oxygen concentration that has greatly watered down on the one hand oxygen-enriched air, on the other hand to the preheating once more of high-temperature oxygen-enriched air, burning is carried out under the oxygen deprivation state, the oxidization burning loss rate and the oxynitrides growing amount that are heated material significantly reduce, combustion position is better, and size by control oxygen-enriched air pressure and change smoke backflow mouth, under the condition of different oxygen content air feeds, still can regulate the mixed proportion of oxygen-enriched air and flue gas, thereby make gaseous mixture reach required oxygen concentration; Repeatedly circulate by flue gas, difficulty is fired full combustion of fuel in the flue gas, has improved the utilization rate of fuel.The present invention improves the industrial furnace heat exchange efficiency, fuel savings, reduce oxidization burning loss, the discharging of reduction oxynitrides, economic benefit and obvious environment benefit.
Description of drawings
Fig. 1 is the burner general illustration.Wherein, fuel gas inlet/exhanst gas outlet 1, oxygen-enriched air import/exhanst gas outlet 2, oxygen-enriched air heat storage case 3, oxygen-enriched air spout brick 4, combustion gas spout brick 5, regenerator gas body case 6.
Fig. 2 is a burner flue gas recirculation access diagram.Wherein, the flue gas recirculation passage 8.
Fig. 3 is a spout brick structure schematic diagram.Wherein, oxygen-enriched air spout brick 4, combustion gas spout brick 5, combustion gas spout 7, flue gas recirculation passage 8, oxygen enrichment implication and flue gas gaseous mixture spout 9, smoke backflow mouth 10, smoke backflow spout brick 11.
The specific embodiment
The present invention includes fuel gas inlet/exhanst gas outlet 1, oxygen-enriched air import/exhanst gas outlet 2, oxygen-enriched air heat storage case 3, oxygen-enriched air spout brick 4, combustion gas spout brick 5, regenerator gas body case 6, combustion gas spout 7, flue gas recirculation passage 8, oxygen-enriched air and flue gas gaseous mixture spout 9, smoke backflow mouth 10, smoke backflow spout brick 11.Fuel gas inlet/exhanst gas outlet 1 is connected with the pipeline of the gas outlet/smoke inlet of reversal valve, oxygen-enriched air import/exhanst gas outlet 2 is connected with the pipeline of the oxygen-enriched air outlet/exhanst gas outlet of reversal valve, fuel gas inlet/exhanst gas outlet 1 is connected to burner side by side with oxygen-enriched air import/exhanst gas outlet 2, after oxygen-enriched air heat storage case 3 is positioned at oxygen-enriched air import/exhanst gas outlet 2, oxygen-enriched air heat storage case 3 is connected with oxygen-enriched air spout brick 4, flue gas recirculation passage 8, oxygen enrichment implication and flue gas gaseous mixture spout 9 are arranged in oxygen-enriched air spout brick 4, smoke backflow spout brick 11 is positioned at oxygen-enriched air spout brick 4 peripheries, the C shape passage that smoke backflow spout brick 11 and oxygen-enriched air spout brick are 4 constitutes smoke backflow mouth 10, after regenerator gas body case 6 is positioned at fuel gas inlet/exhanst gas outlet 1, regenerator gas body case 6 is connected with combustion gas spout brick 5, and combustion gas spout 7 is arranged in combustion gas spout brick 5.
Under the control of reversal valve, divide two duties: fired state and smoke evacuation state.During fired state, oxygen-enriched air enters burner by oxygen-enriched air import/exhanst gas outlet 2, and with the heat storage heat exchange in the oxygen-enriched air heat storage case 3, temperature improves, expanded by heating, and momentum increases.Oxygen-enriched air volume after the preheating expands rapidly, is obtaining under the higher momentum effect, and flue gas recirculation passage 8 places form negative pressure, entrainment inner flue gas of the stove by smoke backflow mouth 10.Inner flue gas of the stove is with after oxygen-enriched air mixes, and oxygen concentration reduces, high-temperature flue gas preheating oxygen-enriched air once more simultaneously, and the high temperature oxygen-deficient mixture is from spout 9 ejections.Combustion gas enters the heat storage heat exchange in burner and the regenerator gas body case 6 from fuel gas inlet/exhanst gas outlet 1, improve temperature and momentum, from combustion gas spout 7 ejection at a high speed, with gaseous mixture mixed combustion gradually.When the regenerator temperature in oxygen-enriched air heat storage case 3, the regenerator gas body case 6 drops to design temperature, transfer the smoke evacuation state to.Flue gas enters burner, with the heat storage heat exchange in oxygen-enriched air heat storage case 3, the regenerator gas body case 6 by combustion gas spout 7 and gaseous mixture spout 9 during the smoke evacuation state.When heat storage is preheating to design temperature, finish a work period, reenter the burning duty.
Claims (1)
1. the double heat storage type High Temperature Air Combustion device of an oxygen enrichment air feed, it is characterized in that, comprise fuel gas inlet/exhanst gas outlet (1), oxygen-enriched air import/exhanst gas outlet (2), oxygen-enriched air heat storage case (3), oxygen-enriched air spout brick (4), combustion gas spout brick (5), regenerator gas body case (6), combustion gas spout (7), flue gas recirculation passage (8), oxygen-enriched air and flue gas gaseous mixture spout (9), smoke backflow mouth (10), smoke backflow spout brick (11); Fuel gas inlet/exhanst gas outlet (1) is connected with the pipeline of the gas outlet/smoke inlet of reversal valve, oxygen-enriched air import/exhanst gas outlet (2) is connected with the pipeline of the oxygen-enriched air outlet/exhanst gas outlet of reversal valve, fuel gas inlet/exhanst gas outlet (1) is connected to burner side by side with oxygen-enriched air import/exhanst gas outlet (2), after oxygen-enriched air heat storage case (3) is positioned at oxygen-enriched air import/exhanst gas outlet (2), oxygen-enriched air heat storage case (3) is connected with oxygen-enriched air spout brick (4), flue gas recirculation passage (8), oxygen enrichment implication and flue gas gaseous mixture spout (9) are arranged in oxygen-enriched air spout brick (4), smoke backflow spout brick (11) is positioned at oxygen-enriched air spout brick (4) periphery, C shape passage between smoke backflow spout brick (11) and oxygen-enriched air spout brick (4) constitutes smoke backflow mouth (10), after regenerator gas body case (6) is positioned at fuel gas inlet/exhanst gas outlet (1), regenerator gas body case (6) is connected with combustion gas spout brick (5), and combustion gas spout (7) is arranged in combustion gas spout brick (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100645402A CN102095200B (en) | 2011-03-17 | 2011-03-17 | Double heat accumulation type high-temperature oxygen-deficient combustor with oxygen-enriched air supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100645402A CN102095200B (en) | 2011-03-17 | 2011-03-17 | Double heat accumulation type high-temperature oxygen-deficient combustor with oxygen-enriched air supply |
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| Publication Number | Publication Date |
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| CN102095200A true CN102095200A (en) | 2011-06-15 |
| CN102095200B CN102095200B (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100645402A Expired - Fee Related CN102095200B (en) | 2011-03-17 | 2011-03-17 | Double heat accumulation type high-temperature oxygen-deficient combustor with oxygen-enriched air supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140427A (en) * | 2018-09-30 | 2019-01-04 | 西安鑫顶天装备智能科技有限公司 | A kind of combustion gas fission device |
| CN109185881A (en) * | 2018-09-30 | 2019-01-11 | 西安鑫顶天装备智能科技有限公司 | A kind of multisection type oxygen-enriched combustion-supporting burner special |
| CN111174423A (en) * | 2020-02-05 | 2020-05-19 | 鞍钢集团工程技术有限公司 | High-temperature oxygen-enriched heating furnace for extracting vanadium and titanium from vanadium-titanium slag and operation method thereof |
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| US4923391A (en) * | 1984-08-17 | 1990-05-08 | American Combustion, Inc. | Regenerative burner |
| CN1337547A (en) * | 2001-09-21 | 2002-02-27 | 清华大学 | Industrial furnace with high-temperature low-oxygen air burner |
| CN2562078Y (en) * | 2002-08-16 | 2003-07-23 | 冶金工业部节能中心常熟喷嘴厂 | Heat stored burner |
| CN1959206A (en) * | 2006-10-11 | 2007-05-09 | 中南大学 | Air burning method in low oxygen and high temperature, and equipment |
| CN101650133A (en) * | 2009-09-01 | 2010-02-17 | 北京沃克能源科技有限公司 | Recycling system of smoke gas energy for realizing high-temperature and low-oxygen combustion |
| CN201973711U (en) * | 2011-03-17 | 2011-09-14 | 北京沃克能源科技有限公司 | Oxygen-enriched air supply double-heat accumulating type high temperature oxygen-poor burner |
-
2011
- 2011-03-17 CN CN2011100645402A patent/CN102095200B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4923391A (en) * | 1984-08-17 | 1990-05-08 | American Combustion, Inc. | Regenerative burner |
| CN1337547A (en) * | 2001-09-21 | 2002-02-27 | 清华大学 | Industrial furnace with high-temperature low-oxygen air burner |
| CN2562078Y (en) * | 2002-08-16 | 2003-07-23 | 冶金工业部节能中心常熟喷嘴厂 | Heat stored burner |
| CN1959206A (en) * | 2006-10-11 | 2007-05-09 | 中南大学 | Air burning method in low oxygen and high temperature, and equipment |
| CN101650133A (en) * | 2009-09-01 | 2010-02-17 | 北京沃克能源科技有限公司 | Recycling system of smoke gas energy for realizing high-temperature and low-oxygen combustion |
| CN201973711U (en) * | 2011-03-17 | 2011-09-14 | 北京沃克能源科技有限公司 | Oxygen-enriched air supply double-heat accumulating type high temperature oxygen-poor burner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140427A (en) * | 2018-09-30 | 2019-01-04 | 西安鑫顶天装备智能科技有限公司 | A kind of combustion gas fission device |
| CN109185881A (en) * | 2018-09-30 | 2019-01-11 | 西安鑫顶天装备智能科技有限公司 | A kind of multisection type oxygen-enriched combustion-supporting burner special |
| CN111174423A (en) * | 2020-02-05 | 2020-05-19 | 鞍钢集团工程技术有限公司 | High-temperature oxygen-enriched heating furnace for extracting vanadium and titanium from vanadium-titanium slag and operation method thereof |
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| CN102095200B (en) | 2012-08-08 |
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