CN104633657A - Porous media burner with taper type bluff bodies - Google Patents
Porous media burner with taper type bluff bodies Download PDFInfo
- Publication number
- CN104633657A CN104633657A CN201410745933.3A CN201410745933A CN104633657A CN 104633657 A CN104633657 A CN 104633657A CN 201410745933 A CN201410745933 A CN 201410745933A CN 104633657 A CN104633657 A CN 104633657A
- Authority
- CN
- China
- Prior art keywords
- burner
- gas
- taper type
- tapered
- porous media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/10—Burner material specifications ceramic
- F23D2212/101—Foam, e.g. reticulated
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The invention relates to the technical field of thermal power engineering. The porous media burner with taper type bluff bodies comprises a burner shell, taper type bluff bodies, an igniter, ceramic balls, a foamed ceramic, a flow equalizing plate, a premixing chamber, a fuel gas inlet, an air inlet and a flue gas outlet. The porous media burner with the taper type bluff bodies uses the taper type bluff bodies to eliminate boundary effect influences and introduces premixing gas to an axis area of the burner to burn, a temperature field lowers gradually from the axis to the side wall, the heat dissipation of the wall surface is reduced, and the thermal efficiency of the burner is improved; the premixing gas is introduced into a high-temperature burning area through the taper type bluff bodies, and the stability of low heating value gas burning is improved; the taper type bluff bodies guide high-temperature flue gas into the axis area, a high-temperature heat storage area concentrated on the axis is formed, inclination and breakage in the flame transferring process are avoided, and the stability of burning is improved. The porous media burner with the taper type bluff bodies can burn conventional fuels such as liquefied petroleum gas and natural gas and the like, and low heating value gas fuels with heating value close to 4000kJ/m3 can also be burned.
Description
Technical field
The present invention designs a kind of porous media combustor, belongs to Thermal Power Engineering technical field.
Background technology
China is faced with that energy supply and demand is particularly thorny, environmental pollution is on the rise and ecology suffers the series of problems such as sustaining breakdown; Rapid economic development needs to consume a large amount of energy, will take into account environmental protection simultaneously, but current wherein energy resource supply anxiety may become the weak link of China's economic development; Therefore, widen the low-grade or low-calorie energy of the variation of energy resource supply channel, excavation and application, seek to be conducive to the high performance clean burning technology of environmental protection simultaneously, providing powerful support for of solving the problem can be become undoubtedly.
The burning of premixed gas in porous media, has advantage applied widely, power-adjustable scope is large, pollutant emission is low etc., worldwide becomes an emerging study hotspot and is just being subject to studying more and more widely and paying close attention to; Utilize multi-hole medium combustion technology can also realize the extremely low organic or industrial waste gas of calorific value from the smooth combustion maintained, fuel reforming, coal gasification, the research and development of burning-heat exchanger and the exploitation etc. of superadiabatic engine, there is wide range of application and development prospect; Research multi-hole medium combustion technology, will contribute to China's economize energy, raising energy level, and alleviate the contradiction of energy supply and demand, can alleviate environmental pollution simultaneously.
Multi-hole medium combustion technology application is in the market a lot, and publication number is the patent of invention " a kind of catalytic porous medium burner " of 101929676A, its combustion chamber placement foamed ceramics and catalytic metal fibrofelt, and premixed gas is by metal fiber felt catalytic combustion.Publication number is the patent of invention " expanding premixing porous medium combustor of biomass burning gasification gas " of 102418927A, cone burner shell is adopted in its structure, porous media cross section increases from the bottom to top gradually, flame can maintain in porous media, and its hot reflux is mainly accumulation of heat and the radiation heat transfer of porous media; Publication number is the patent of invention " a kind of diffusion type porous medium gas fuel combustor " of 101737778A, macropore porous media, aperture porous media and lower metal fiber is provided with from top to bottom, combustion gas and air diffusion combustion in little porous media in burner.
In the application of above multi-hole medium combustion technology, porous media and burner inner wall contact position are without specially treated, and near burner inner wall, porosity is higher, and gas flow is large, and wall thermic load is higher, and heat radiation is large; Flame kernel is concentrated not, easily occurs combustion instability phenomenon.The present invention devises a kind of porous media combustor with tapered bluff body, use premixed gas, its tapered bluff body eliminates wall effect impact, premixed gas is introduced burner axis zonal combustion, temperature field is reduced to limit wall gradually by axis, decrease the heat radiation of wall, improve the burner thermal efficiency; Premixed gas introduces the combustion zone of high temperature by tapered bluff body, improves the stability of low heat value gas burning; High-temperature flue gas is imported axis region by tapered bluff body, forms the high-temperature heat accumulation district concentrating on axis, avoids the inclination in flame propagation process and break, improve the stability of burning.
In sum, the porous media combustor with tapered bluff body is a kind of new method that multi-hole medium combustion technology utilizes.
Summary of the invention
The present invention designs a kind of porous media combustor with tapered bluff body, and this burner comprises burner housing, tapered bluff body, burning torch, Ceramic Balls, foamed ceramics, homogenizing plate, premixer, fuel gas inlet, air intake and exhanst gas outlet.Ceramic Balls is arranged in its combustion zone, and anti-backfire district arranges foamed ceramics, and Ceramic Balls adopts aluminium oxide material, and foamed ceramics adopts silicon carbide material.Burner of the present invention is while realizing porous medium super-thermal insulating burning, wall effect impact is eliminated by tapered bluff body, realize concentrating on the preheating zone of burner axis, combustion zone and heat-accumulating area, decrease burner wall thermic load, reduce heat loss, improve efficiency of combustion, enhance premixed combustion gas stability, expanded poor Flammability limits greatly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the porous media combustor being with tapered bluff body; In figure, 1, exhanst gas outlet, 2, shell, 3, tapered bluff body, 4, Ceramic Balls, 5, igniter, 6, foamed ceramics, 7, set bolt, 8, homogenizing plate, 9, premixer, 10, fuel gas inlet, 11, air intake.
Detailed description of the invention
Concrete structure of the present invention is described in detail according to Fig. 1.
This burner comprises burner housing, tapered bluff body, burning torch, Ceramic Balls, foamed ceramics, homogenizing plate, premixer, fuel gas inlet, air intake and exhanst gas outlet.Ceramic Balls is arranged in its combustion zone, and anti-backfire district arranges foamed ceramics, and Ceramic Balls adopts aluminium oxide material, and foamed ceramics adopts silicon carbide material.
Claims (4)
1. this burner comprises burner housing, tapered bluff body, burning torch, Ceramic Balls, foamed ceramics, homogenizing plate, premixer, fuel gas inlet, air intake and exhanst gas outlet; Ceramic Balls is arranged in its combustion zone, and anti-backfire district arranges foamed ceramics, and Ceramic Balls adopts aluminium oxide material, and foamed ceramics adopts silicon carbide material.
2. the porous media combustor of the tapered bluff body of band according to claim 1, it is characterized in that: tapered bluff body changes burner flow field, eliminate wall effect, the premixed gas of burner near wall is imported burner axis zonal combustion, reduce the heat radiation of burner wall, be conducive to improving the burner thermal efficiency.
3. the porous media combustor of the tapered bluff body of band according to claim 1, it is characterized in that: high-temperature flue gas is imported burner axis region by tapered bluff body, formed and concentrate on the high-temperature heat accumulation district of axis, avoid in flame propagation process inclination and break, improve the stability of burning.
4. the porous media combustor of the tapered bluff body of band according to claim 1, is characterized in that: premixed gas is imported axis high temperature combustion zone by tapered bluff body, improves the stability of low heat value gas burning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745933.3A CN104633657A (en) | 2014-12-09 | 2014-12-09 | Porous media burner with taper type bluff bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745933.3A CN104633657A (en) | 2014-12-09 | 2014-12-09 | Porous media burner with taper type bluff bodies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104633657A true CN104633657A (en) | 2015-05-20 |
Family
ID=53212704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410745933.3A Pending CN104633657A (en) | 2014-12-09 | 2014-12-09 | Porous media burner with taper type bluff bodies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104633657A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841191A (en) * | 2016-03-30 | 2016-08-10 | 中国科学院工程热物理研究所 | Tail edge structure of V-shaped flame stabilizer |
| CN108180475A (en) * | 2018-01-10 | 2018-06-19 | 沈阳工程学院 | A kind of premixed gas porous media combustor axially and radially surely fired |
| CN110440617A (en) * | 2018-05-02 | 2019-11-12 | 中国科学院理化技术研究所 | A kind of heat-pipe heat exchanger |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013395A (en) * | 1971-05-11 | 1977-03-22 | Wingaersheek, Inc. | Aerodynamic fuel combustor |
| JPH08145315A (en) * | 1994-07-18 | 1996-06-07 | Toyota Motor Corp | Low nox burner |
| US5551869A (en) * | 1995-03-07 | 1996-09-03 | Brais, Martres Et Associes Inc. | Gas staged burner |
| CN2253800Y (en) * | 1995-08-18 | 1997-05-07 | 哈尔滨锅炉有限责任公司 | Concentration type self-stabilizing coal powder burner |
| CN1804461A (en) * | 2006-01-20 | 2006-07-19 | 东北大学 | Porous metal medium burner capable of burning low heat value gas |
| CN101158469A (en) * | 2007-11-06 | 2008-04-09 | 东北大学 | Sectional type porous ceramic dielectric gas fuel combusting device |
| CN101556040A (en) * | 2009-05-15 | 2009-10-14 | 大连理工大学 | Porous medium combustion apparatus of combustion use liquid fuel |
| CN201827891U (en) * | 2010-09-26 | 2011-05-11 | 宝山钢铁股份有限公司 | Anti-backfire premixing porous medium burner nozzle |
| CN102418927A (en) * | 2011-12-20 | 2012-04-18 | 沈阳工程学院 | Gradually-expanding premixing porous medium combustor for combusting biomass gasified gas |
| CN103868055A (en) * | 2014-01-28 | 2014-06-18 | 中国科学院过程工程研究所 | Regenerative combustion device applicable to stable combustion of compounded tangent-flow and direct-flow gas with low calorific value |
-
2014
- 2014-12-09 CN CN201410745933.3A patent/CN104633657A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013395A (en) * | 1971-05-11 | 1977-03-22 | Wingaersheek, Inc. | Aerodynamic fuel combustor |
| JPH08145315A (en) * | 1994-07-18 | 1996-06-07 | Toyota Motor Corp | Low nox burner |
| US5551869A (en) * | 1995-03-07 | 1996-09-03 | Brais, Martres Et Associes Inc. | Gas staged burner |
| CN2253800Y (en) * | 1995-08-18 | 1997-05-07 | 哈尔滨锅炉有限责任公司 | Concentration type self-stabilizing coal powder burner |
| CN1804461A (en) * | 2006-01-20 | 2006-07-19 | 东北大学 | Porous metal medium burner capable of burning low heat value gas |
| CN101158469A (en) * | 2007-11-06 | 2008-04-09 | 东北大学 | Sectional type porous ceramic dielectric gas fuel combusting device |
| CN101556040A (en) * | 2009-05-15 | 2009-10-14 | 大连理工大学 | Porous medium combustion apparatus of combustion use liquid fuel |
| CN201827891U (en) * | 2010-09-26 | 2011-05-11 | 宝山钢铁股份有限公司 | Anti-backfire premixing porous medium burner nozzle |
| CN102418927A (en) * | 2011-12-20 | 2012-04-18 | 沈阳工程学院 | Gradually-expanding premixing porous medium combustor for combusting biomass gasified gas |
| CN103868055A (en) * | 2014-01-28 | 2014-06-18 | 中国科学院过程工程研究所 | Regenerative combustion device applicable to stable combustion of compounded tangent-flow and direct-flow gas with low calorific value |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841191A (en) * | 2016-03-30 | 2016-08-10 | 中国科学院工程热物理研究所 | Tail edge structure of V-shaped flame stabilizer |
| CN105841191B (en) * | 2016-03-30 | 2018-07-06 | 中国科学院工程热物理研究所 | A kind of V-flame stabilizer trailing edge structures |
| CN108180475A (en) * | 2018-01-10 | 2018-06-19 | 沈阳工程学院 | A kind of premixed gas porous media combustor axially and radially surely fired |
| CN108180475B (en) * | 2018-01-10 | 2023-08-22 | 沈阳工程学院 | Premixed gas porous medium burner capable of stabilizing combustion axially and radially |
| CN110440617A (en) * | 2018-05-02 | 2019-11-12 | 中国科学院理化技术研究所 | A kind of heat-pipe heat exchanger |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |