CN101907296B - Effective dimethyl ether/air low NOx high-temperature burning system - Google Patents
Effective dimethyl ether/air low NOx high-temperature burning system Download PDFInfo
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- CN101907296B CN101907296B CN2010102237390A CN201010223739A CN101907296B CN 101907296 B CN101907296 B CN 101907296B CN 2010102237390 A CN2010102237390 A CN 2010102237390A CN 201010223739 A CN201010223739 A CN 201010223739A CN 101907296 B CN101907296 B CN 101907296B
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- Prior art keywords
- air
- pantographic
- flue gas
- dimethyl ether
- burner
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- 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.)
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 35
- 239000003546 flue gas Substances 0.000 claims description 35
- 238000002485 combustion reaction Methods 0.000 claims description 32
- 238000005338 heat storage Methods 0.000 claims description 13
- 239000003517 fume Substances 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Classifications
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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 provides an effective dimethyl ether/air low NOx high-temperature burning system. Smoke gas from a furnace hearth and cold air are mixed in a wall honeycomb-type heat storing device of a heat accumulator embedded in an inner wall, heat exchange between the cooling air and the smoke gas are carried out and the temperature rises, thereby the sensible heat of the cold air is more, the heat efficiency of the system is higher, and the smoke-gas recirculation is realized to reduce oxygen concentration in air jet current and inhibit the generation of NOx. The air and the smoke gas subjected to primary mixing pass through a pipeline (7) to enter a scale burner for secondary mixing to further fully mix, and the mixture and fuels are subjected to dispersion burning when the mixture is ejected, and the burned smoke gas is recycled to enter the heat storing device to circulate in such a way so as to realize a smokeless system. The invention realizes low NOx high-temperature burning with high burning efficiency, environment protection, simple method and easy implementation.
Description
Technical field
The present invention relates to a kind of effective dimethyl ether/air low NOx high-temperature burning system.
Background technology
Should realize efficient burning at dimethyl ether and air burning process, reduce the discharging of pollutant again, be the key issue place of learning gas fuel combustion; But it is good these two issue handlings; Really be a problem that is not easy to solve, a lot of research work personnel have done a large amount of work in this respect, draw and adopt the way of preheated air can realize efficient burning; But along with the air themperature of sending into burner hearth improves; Certainly will improve the theoretical temperature combustion of fuel combustion, the discharge capacity that makes heating power type NOx is sharply increased, run in the opposite direction with requirement on environmental protection.How solving this contradiction is again pendulum another problem that must tackle key problems in face of the heat energy worker.Passed through extensive work personnel experimental study repeatedly afterwards and found to adopt flue gas recirculation, can realize that high-temp combustion reduced the discharging of NOx again.Because inner flue gas of the stove recirculation can reduce oxygen concentration in the air-spray, suppress the generation of NOx, and in recycling the process of flue gas, can come the preheating cold air with the waste heat of flue gas, improve efficiency of combustion.How to implement and improve combustion system, mention efficiency of combustion the highest, pollutant emission drops to the problem that the minimum researcher of being constantly inquires into.
Summary of the invention
Main purpose of the present invention is to solve technological existing deficiency at present, thereby proposes a kind of raising efficiency of combustion and reduce NOx obvious results highly effective combustion system.
The present invention is directed to above-mentioned technical problem mainly is to be able to further improvement through following technical proposals:
Effective dimethyl ether/air low NOx high-temperature burning system is characterized in that: this combustion system comprises flue gas (1), cold air (2), burner hearth (3), pantographic storage heater (4), the heat storage (5) that embeds storage heater inwall honeycomb fashion, dimethyl ether fuel (6), mixing air inlet duct (7), pantographic burner inlet (8), pantographic burner pipe shaft (9), fuel nozzle (10), pantographic burner outlet (11) and fuel nozzle outlet (12); In the heat storage (5) that embeds storage heater inwall honeycomb fashion, carry out mixed once from flue gas in the burner hearth and cold air; Air and flue gas through mixed once get into the pantographic burner through piping (7), carry out secondary at this and mix, and air and flue gas are further mixed fully; When spraying then and fuel carry out diffusion combustion; Gas fume after burning reclaims again, feeds pantographic storage heater (4), reciprocation cycle.
Burner hearth (3) is provided with two exhanst gas outlets.
Heat storage with embedding storage heater inwall honeycomb fashion reclaims fume afterheat, and its waste heat is used for adding hot-air, realizes flue gas recirculation.
Adopted two Rafael nozzles can make air and flue gas carry out secondary and mixed, made air and flue gas, realized fully burning as much as possible mixing before fully with fuel combustion.
Said pantographic storage heater (4) is two, and the heat storage (5) that embeds storage heater inwall honeycomb fashion is two.
Therefore, the beneficial effect of patent of the present invention is:
1, through adopting the flue gas that reclaims to come the heats cold air and reducing oxygen concentration in the air, can improve efficiency of combustion and the generation that reduces NOx to a great extent.
2, adopt two Rafael nozzles can make air and flue gas carry out secondary and mixed, air and flue gas are mixed with fuel combustion the time fully, realized fully burning as much as possible.
3, adopt two pantographic storage heaters, can realize that two are equipped with one, also can use simultaneously, can realize that like this work operating mode is changeable, and improve the production safety coefficient.
4, adopting the advantage of this invention combustion system is that safety coefficient is high, and efficiency of combustion is high, can be regarded as smokeless system.
Description of drawings
Further specify flesh and blood of the present invention below in conjunction with accompanying drawing with instance, but content of the present invention is not limited to this.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the export structure sketch map of burner.
Fig. 3 is the structural representation of pantographic storage heater.
Fig. 4 is the structural representation of pantographic burner.
Among Fig. 1; Flue gas (1), cold air (2), burner hearth (3), pantographic storage heater (4), the heat storage (5) that embeds storage heater inwall honeycomb fashion, dimethyl ether fuel (6), mixing air inlet duct (7), pantographic burner inlet (8), pantographic burner pipe shaft (9), fuel nozzle (10), pantographic burner outlet (11), fuel nozzle outlet (12), air outlet slit hole (13), dimethyl ether fuel gas outlet opening (14).
The specific embodiment
The invention provides a kind of effective dimethyl ether/air low NOx high-temperature burning system, it comprises flue gas 1, cold air 2, burner hearth (3), pantographic storage heater 4, the heat storage 5 that embeds storage heater inwall honeycomb fashion, dimethyl ether fuel 6, mixing air inlet duct 7, pantographic burner inlet 8, pantographic burner pipe shaft (9), jet pipe 10, pantographic burner outlet 11, fuel nozzle outlet 12.
Dimethyl ether and air burning system improve the method for efficiency of combustion: return the inner flue gas of the stove waste heat recovery and the cold air mixing, carry out heat exchange, make the cold air heating; Temperature raises; The sensible heat of cold air the more, then system's efficiency of combustion is higher, thereby reaches the purpose that improves efficiency of combustion.
Dimethyl ether and air burning system reduce the method for the discharging of NOx pollutant: mix inner flue gas of the stove with air, thereby reduce the oxygen concentration in the air-spray, suppress the generation of NOx, thereby realize the discharging of low NOx.
A kind of effective dimethyl ether/air low NOx high-temperature burning system:
It is characterized in that: 1. reclaim fume afterheat with the heat storage that embeds storage heater inwall honeycomb fashion, its waste heat is used for the heats cold air, and the cold air temperature is raise; Increase its sensible heat; Sensible heat the more, then system's efficiency of combustion is higher, thereby reaches the purpose that improves efficiency of combustion.2. adopt flue gas recirculation, thereby reduce the oxygen concentration in the air-spray, suppress the generation of NOx.3. adopted two Rafael nozzles can make air and flue gas carry out secondary and mixed, air and flue gas are mixed with fuel combustion the time fully.4. adopt two pantographic storage heaters, can realize that two are equipped with one, also can use simultaneously, can realize that like this work operating mode is changeable, and improve the production safety coefficient.
As shown in Figure 1, extract the flue gas that has uniform temperature in the burner hearth with cold air and in inwall is embedded with the heat storage storage heater of wall honeycomb fashion, to mix, the cooling air has carried out heat exchange at this and flue gas; Its temperature raises, and visible, the sensible heat of cold air the more; Then system thermal efficiency is higher; And realized flue gas recirculation at this, thereby reduced the oxygen concentration in the air-spray, suppressed the generation of NOx.Air and flue gas through mixed once get into the pantographic burner through piping (7); Carry out secondary at this and mix, it is abundant that air and flue gas are further mixed, when spraying then and fuel carry out diffusion combustion; Gas fume after burning reclaims again; Feed storage heater, reciprocation cycle forms smokeless system like this.
The heat storage that pantographic storage heater inwall embeds honeycomb fashion reclaims fume afterheat, is used for adding hot-air with its waste heat, and the cold air temperature is raise, and increases its sensible heat, sensible heat the more, then system's efficiency of combustion is higher, thereby reaches the purpose of raising efficiency of combustion.
Air and flue gas are entrainmented by the pantographic storage heater and get in the pipe, because of having certain speed disturbance take place in pipe, mix each other, carry out mixed once at this, and the mist that comes out is the empty cigarette mixture with certain speed and temperature.
Empty cigarette mixture with certain speed and temperature gets into the pantographic burner to carry out second time and mixes, and makes mixing through two-stage before with fuel gas buring air and flue gas are fully mixed, and can reach abundant burning at last.
Adopt two pantographic storage heaters, can realize that two are equipped with one, also can use simultaneously, can realize that like this work operating mode is changeable, and improve the production safety coefficient.
Effective dimethyl ether/air low NOx high-temperature burning system of the present invention is useful in the very little combustion system of dust after the gas combustion, is particularly suitable for not having after the gas combustion combustion system of black smoke and residue.
Claims (5)
1. effective dimethyl ether/air low NOx high-temperature burning system is characterized in that: this combustion system comprises that flue gas (1), cold air (2), burner hearth (3), pantographic storage heater (4), the heat storage (5) that embeds storage heater inwall honeycomb fashion, dimethyl ether fuel (6), mixing air inlet duct (7), pantographic burner inlet (8), pantographic burner pipe shaft (9), fuel nozzle (10), pantographic burner outlet (11) and fuel nozzle export (12); In the heat storage (5) that embeds storage heater inwall honeycomb fashion, carry out mixed once from flue gas in the burner hearth and cold air; Air and flue gas through mixed once get into the pantographic burner through piping (7), carry out secondary at this and mix, and air and flue gas are further mixed fully; When spraying then and fuel carry out diffusion combustion; Gas fume after burning reclaims again, feeds pantographic storage heater (4), reciprocation cycle.
2. effective dimethyl ether/air low NOx high-temperature burning system according to claim 1 is characterized in that: burner hearth (3) is provided with two exhanst gas outlets.
3. effective dimethyl ether/air low NOx high-temperature burning system according to claim 1 is characterized in that: the heat storage with embedding storage heater inwall honeycomb fashion reclaims fume afterheat, and its waste heat is used for adding hot-air, realizes flue gas recirculation.
4. effective dimethyl ether/air low NOx high-temperature burning system according to claim 1; It is characterized in that: adopted pantographic storage heater (4) and pantographic burner can make air and flue gas carry out secondary and mixed; Make air and flue gas mixing before fully, realize fully burning as much as possible with fuel combustion.
5. effective dimethyl ether/air low NOx high-temperature burning system according to claim 2 is characterized in that: said pantographic storage heater (4) is two, and the heat storage (5) that embeds storage heater inwall honeycomb fashion is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102237390A CN101907296B (en) | 2010-07-12 | 2010-07-12 | Effective dimethyl ether/air low NOx high-temperature burning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102237390A CN101907296B (en) | 2010-07-12 | 2010-07-12 | Effective dimethyl ether/air low NOx high-temperature burning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101907296A CN101907296A (en) | 2010-12-08 |
| CN101907296B true CN101907296B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102237390A Expired - Fee Related CN101907296B (en) | 2010-07-12 | 2010-07-12 | Effective dimethyl ether/air low NOx high-temperature burning system |
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| Country | Link |
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| CN (1) | CN101907296B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434881B (en) * | 2011-09-21 | 2014-03-05 | 长沙理工大学 | Multi-section self-preheating burner |
| RU2689654C2 (en) * | 2014-04-10 | 2019-05-28 | Софинтер С.П.А. | Burner |
| CN108613182A (en) * | 2018-07-09 | 2018-10-02 | 河北科技大学 | A kind of double injection low nitrogen burning systems of recuperative heater |
| CN112902171B (en) * | 2021-02-03 | 2023-07-11 | 沈阳理工大学 | Double-rotation burner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043522A (en) * | 1988-12-15 | 1990-07-04 | 欧伊坦佩尔拉公司 | Reduce the combustion method and the device thereof of formation of nitrogen oxides |
| US5201650A (en) * | 1992-04-09 | 1993-04-13 | Shell Oil Company | Premixed/high-velocity fuel jet low no burner |
| EP1217297A1 (en) * | 2000-12-22 | 2002-06-26 | ALSTOM Power N.V. | Burner with increased flame stability |
| US7104784B1 (en) * | 1999-08-16 | 2006-09-12 | Nippon Furnace Kogyo Kaisha, Ltd. | Device and method for feeding fuel |
| CN101545677A (en) * | 2009-05-13 | 2009-09-30 | 阜新汇丰资源开发有限公司 | Thick oil heating furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5685614A (en) * | 1979-12-14 | 1981-07-11 | Matsushita Electric Ind Co Ltd | Burner |
-
2010
- 2010-07-12 CN CN2010102237390A patent/CN101907296B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043522A (en) * | 1988-12-15 | 1990-07-04 | 欧伊坦佩尔拉公司 | Reduce the combustion method and the device thereof of formation of nitrogen oxides |
| US5201650A (en) * | 1992-04-09 | 1993-04-13 | Shell Oil Company | Premixed/high-velocity fuel jet low no burner |
| US7104784B1 (en) * | 1999-08-16 | 2006-09-12 | Nippon Furnace Kogyo Kaisha, Ltd. | Device and method for feeding fuel |
| EP1217297A1 (en) * | 2000-12-22 | 2002-06-26 | ALSTOM Power N.V. | Burner with increased flame stability |
| CN101545677A (en) * | 2009-05-13 | 2009-09-30 | 阜新汇丰资源开发有限公司 | Thick oil heating furnace |
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| Publication number | Publication date |
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| CN101907296A (en) | 2010-12-08 |
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