CN1821657A - Porous metal-ceramic medium gas fuel burner - Google Patents
Porous metal-ceramic medium gas fuel burner Download PDFInfo
- Publication number
- CN1821657A CN1821657A CN 200610045688 CN200610045688A CN1821657A CN 1821657 A CN1821657 A CN 1821657A CN 200610045688 CN200610045688 CN 200610045688 CN 200610045688 A CN200610045688 A CN 200610045688A CN 1821657 A CN1821657 A CN 1821657A
- Authority
- CN
- China
- Prior art keywords
- gas
- medium
- burner
- ceramic
- porous medium
- 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.)
- Granted
Links
Images
Landscapes
- Gas Burners (AREA)
Abstract
The porous metal-ceramic medium gas fuel burner consists of casing of refractory material, macroporous ceramic medium, small porous metal medium, burner casing, dedusting metal net or brush, furl gas pipeline, pre-mixing chamber and air pipeline. Inside the burner, there are macroporous ceramic medium of yttrium oxide based zirconium oxide in the upper part, small porous metal medium of stainless steel in the lower part, refractory material coated burning casing, dedusting metal net or brush set below the small porous metal medium. The burner of the present invention can burn fuel gas with heat value from 1000 kcal/cu m to 4000 kcal/cu m, such as blast furnace gas, coke furnace gas, mixed blast furnace gas and coke furnace gas and natural gas, and may be applied widely in metallurgical, chemical and other industry.
Description
Technical field
The present invention relates to a kind of burner, particularly a kind of porous metal-ceramic medium gas fuel burner.
Background technology
At present, the burning of gaseous fuel mainly is to be the space combustion of feature with the free flame in China's industrial production, near the steep and skewness of the thermograde this combustion system, flame front, and the existence in localized hyperthermia district has caused a large amount of NO
xGenerate, incomplete combustion and the thermal efficiency is low, combustion stability is relatively poor.Now, the technology that adds porous media in burner is now progressively paid attention to by people.Premixed combustion in the porous media has many good qualities: the less poor combustion limit, higher burn rate and stability, load regulation range is wide, combustion intensity is high, the burner volume is little etc., and the content of pollution such as nitride and sulfide composition is considerably less in the combustion product, therefore, the premixed combustion in the porous media has very big potentiality in real world applications.
In the burning of high heating value gaseous fuel, the material behavior aspect, characteristics such as that porous media must have is high temperature resistant, anti-oxidant, easy heat conduction, stainless steel, alloy, glass, pottery etc. all Ceng Zuowei research object are on probation by Chinese scholars.Configuration aspects, when the aperture was relatively large, radiation effects penetrated more far-reachingly, and temperature raises very fast; The aperture relatively hour, the optical thickness that porous media is relative is bigger, can radiation-screening and good accumulation of heat effect is arranged.In order effectively to utilize the influencing characterisitic of pore size to burning, people adopt the porous media of non-single aperture, homogenous material mostly.But still there is following defective in the use of present porous media combustor: the porous media material that adopt in great majority research (1) is a pottery, although have resistant to elevated temperatures characteristic, but thermal conduction characteristic is not as metal, resistance when the resistance ratios when combustion gas is flowed in pottery flows in metal is big, and pottery is frangible; Although and the stainless steel thermal conduction characteristic is good, high temperature resistant and anti-oxidant aspect is not as pottery.(2) the porous media aperture is very little, be very easy to block, the single pure gaseous fuel so great majority research is at present all only burnt, and need higher coal gas of combustion ash dust content or mixed gas in the actual production mostly, this makes troubles for the practical application of porous media combustor.
Summary of the invention
Weak point at existing high heating value gaseous fuel porous media combustor the invention provides a kind of porous metal-ceramic medium gas fuel burner.
Burner is made of 1 refractory material sleeve pipe, 2 big bore region ceramic porous mediums, the metal porous medium of 3 orifice region, 4 burner housings, 5 dedusting wire nettings or metallic brush, 6 gas pipelines, 7 premixers, 8 air ducts.Wherein, big bore region belongs to the combustion zone, and the porous media material of use is a pottery, to be applicable to high heating value gaseous fuel (ignition temperature can reach 1900 ℃ even more than).This is because pottery has good high-temperature stability, not easy burn-out; Orifice region is the preheating zone, can effectively store the heat that the combustion zone produces, and the temperature here generally is no more than 1400 ℃, and the porous media material of use is a high-temperature steel.In addition, the resistance when gas flows in the high-temperature steel hole is very little, adds the thermal conductivity that high-temperature steel is good, so be desirable porous media material.In order to guarantee good heat-conducting effect between big bore region ceramic porous medium 2, the metal porous medium 3 of orifice region, make the two tight contact when designing usually.
The material of combustion zone pottery can be with yttria-base zirconia or silicon nitride (when ignition temperature is no more than 1500 ℃), and average pore size is 3～5mm, and porosity is 80～85%, and the arrangement mode in hole is for straight-through.The material of preheating zone metal can be used stainless steel, and average pore size is 0.3～0.5mm, and porosity is 75%～83%, and the arrangement mode in hole is for straight-through.The refractory material shell material can be a high alumina refractories, and the burner housing material adopts high-temperature alloy steel, and wire netting or metallic brush material adopt stainless steel.
The geometry parameter value of burner of the present invention is as follows:
h
1 60～80mm；h
2 10～15mm；h
3 50～60mm；
h
4 50～60mm；h
5 50～60mm；h
6 50～60mm；
h
7 30～40mm；a 3～4mm； b 20～30mm；
Φ
1 180～250mm；Φ
2 50～60mm；Φ
3 80～120mm。
Burner gas flows and the axial cross section of burning can be circle shown in the drawings, also can be square or other polygon.
It is as follows to use the relevant technological parameter of burner of the present invention:
Burning gases: coke-stove gas, natural gas, high heating value gases such as liquefied gas;
Air mass flow: 1500～3000m
3/ h;
Gas flow: 800～2000m
3/ h;
Combustion efficiency: unburned hydrocarbon, nitride and sulfide content are lower than 10ppm, and carbon monoxide is lower than 20ppm.
Use the burner of the technology of the present invention can the combustion heat value excursion at 1000～4000kcal/m
3(4180～16720kJ/m
3) even above gaseous fuel, as blast furnace gas, coke-stove gas or height, burnt mixed gas, gaseous fuels such as natural gas.Burner of the present invention can be widely used in industries such as metallurgy, chemical industry.
Description of drawings
Fig. 1 is the axial section view of burner of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Among Fig. 1,2: 1 refractory material sleeve pipe, 2 big bore region ceramic porous mediums, the metal porous medium of 3 orifice region, 4 burner housings, 5 dedusting wire netting or metallic brush, 6 gas pipelines, 7 premixers, 8 air ducts.
φ 1-internal diameter of burner, φ 2-gas pipeline internal diameter, φ 3-air duct internal diameter, a-burner wall thickness, b-refractory material casing wall thickness, h
1-dedusting wire netting or metallic brush bottom and burner distance from bottom, h
2The height of-dedusting wire netting or metallic brush, h
3The metal porous medium of-orifice region bottom and dedusting wire netting or metallic brush distance from top, h
4The metal porous medium height of-orifice region, h
5-big bore region ceramic porous medium height, h
6-refractory material sleeve pipe top and big bore region ceramic porous medium distance from top, h
7-air duct bottom and burner distance from bottom.
The specific embodiment
As Fig. 1, shown in Figure 2, burner body is by 1 refractory material sleeve pipe, 2 big bore region ceramic porous mediums, the metal porous medium of 3 orifice region, 4 burner housings, 5 dedusting wire netting or metallic brush, 6 gas pipelines, 7 premixers, 8 air ducts constitute, in the cavity that constitutes by burner housing 4 and refractory material sleeve pipe 1, set gradually big bore region ceramic porous medium 2 from top to bottom, the metal porous medium 3 of orifice region, the material of big bore region ceramic porous medium 2 can be yttria-base zirconia or silicon nitride (when ignition temperature is no more than 1500 ℃), and the aperture metal material can be a stainless steel in the preheating zone.The top of aperture medium 3 is concordant with the top of burner housing 4 in the preheating zone, and big bore region ceramic porous medium 2 lower surfaces contact with metal porous medium 3 upper surfaces of orifice region, and preferred design becomes the some apertures of cover in the macropore.Begin to wrap up refractory material sleeve pipe 1 from burner outer wall 4 outsides on air duct top, the refractory material sleeve pipe extends to the certain distance on 2 tops, combustion zone, and the burner outer wall 4 usefulness refractory material sleeve pipes 1 of combustion zone 2 and above part thereof replace.At the cavity inside that burner housing 4 constitutes, the metal porous medium of orifice region 3 times, gas pipeline 6 tops are provided with dedusting wire netting or metallic brush 5, in the burner bottom air duct 8 are set, and sidewall is provided with gas pipeline 6.
Physical dimension can the according to the form below value:
| Group value (mm) | 1 | 2 | 3 | 4 | 5 |
| h 1 | 80 | 75 | 70 | 65 | 60 |
| h 2 | 10 | 11 | 12 | 14 | 15 |
| h 3 | 60 | 58 | 55 | 53 | 50 |
| h 4 | 60 | 58 | 56 | 54 | 50 |
| h 5 | 60 | 58 | 56 | 54 | 50 |
| h 6 | 60 | 58 | 56 | 54 | 50 |
| h 7 | 35 | 30 | 40 | 32 | 36 |
| a | 3.5 | 3 | 4 | 4 | 3 |
| b | 20 | 22 | 24 | 28 | 30 |
| φ1 | 180 | 200 | 210 | 220 | 240 |
| φ2 | 50 | 53 | 55 | 58 | 60 |
| φ3 | 80 | 90 | 100 | 110 | 120 |
| Combustion zone ceramic material average pore size mm | 4 (leading directly to) | 3 (leading directly to) | 5 (leading directly to) | 5 (leading directly to) | 4 (leading directly to) |
| Combustion zone ceramic material porosity % | 82 | 85 | 83 | 80 | 85 |
| Preheating zone metal material average pore size mm | (0.4 leading directly to) | (0.3 leading directly to) | (0.5 leading directly to) | (0.4 leading directly to) | (0.5 leading directly to) |
| Preheating zone metal material porosity % | 76 | 83 | 75 | 80 | 78 |
Use apparatus of the present invention, specifically be exemplified below:
Logical combustion gas, air in burner, after air and combustion gas enter from air duct 8 and gas pipeline 6 respectively, in premixer 7, mix, through entering aperture medium 3 in the preheating zone after dedusting wire netting or metallic brush 5 dedustings, the temperature of aperture medium 3 is lower in the preheating zone, enters macroporous matrix 2 internal combustion in the combustion zone then.
Relevant technological parameter is as follows:
Burning gases: coke-stove gas or natural gas or liquefied gas, ignition temperature is at 1700 ± 50 ℃;
Air mass flow: 2200m
3/ h;
Gas flow: 1500m
3/ h;
Combustion efficiency: air or gaseous fuel all can not be used in and enter the preceding preheating of burner, unburned hydrocarbon, and nitride, sulfide content are lower than 10ppm, and carbon monoxide is lower than 20ppm.
Claims (5)
1, a kind of porous metals-ceramic medium gas fuel burner, comprise burner housing (4), gas pipeline (6), air duct (8), it is characterized in that in the cavity that constitutes by burner housing (4) and refractory material sleeve pipe (1), set gradually big bore region ceramic porous medium (2) from top to bottom, the metal porous medium of orifice region (3), the material of big bore region ceramic porous medium (2) is the yttria-base zirconia, the metal porous medium of orifice region (3) material is a stainless steel, the top of the metal porous medium of orifice region (3) is concordant with the top of burner housing (4), big bore region ceramic porous medium (2) lower surface closely contacts with the metal porous medium of orifice region (3) upper surface, begin to wrap up refractory material sleeve pipe (1) from burner housing (4) outside on air duct (8) top, refractory material sleeve pipe (1) extends to the certain distance on big bore region ceramic porous medium (2) top, the burner housing (4) of big bore region ceramic porous medium (2) and above part thereof replaces with refractory material sleeve pipe (1), cavity inside in burner housing (4) formation, under the metal porous medium of orifice region (3), gas pipeline (6) top is provided with dedusting wire netting or metallic brush (5), in the burner housing (4), dedusting wire netting or metallic brush (5) side space down are premixer (7).
2, according to the described porous metals-ceramic medium gas fuel burner of claim 1, it is characterized in that big bore region ceramic porous medium (2) average pore size is 3～5mm, porosity is 80～85%, the arrangement mode in hole is straight-through or unordered; The metal porous medium of orifice region (3) average pore size is 0.3～0.5mm, and porosity is 75%～83%, and the arrangement mode in hole is for straight-through.
3, according to the described porous metal-ceramic medium gas fuel burner of claim 1, it is characterized in that refractory material sleeve pipe (1) material is a ceramic honey comb, burner housing (4) material adopts high-temperature alloy steel, and wire netting or metallic brush (5) material adopts stainless steel.
4,, it is characterized in that the geometric parameter value is as follows according to the described porous metal-ceramic medium gas fuel burner of claim 1:
h
1 100～120mm； h
2 10～15mm； h
3 30～40mm；
h
4 50～60mm； h
5 50～60mm； h
6 30～40mm；
h
7 30～40mm； a 3～4mm； b 15～20mm；
Φ
1 100～150mm；Φ
2 50～60mm； Φ
3 80～120mm。
5, according to the application of the described porous metal-ceramic medium gas fuel burner of claim 1, it is characterized in that being used to the high heat value gas that burns, comprise coke-stove gas, natural gas, liquefied gas; Air mass flow 1500～3000m
3/ h; Gas flow 800～2000m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100456880A CN100406802C (en) | 2006-01-20 | 2006-01-20 | Porous metal-ceramic medium gas fuel burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100456880A CN100406802C (en) | 2006-01-20 | 2006-01-20 | Porous metal-ceramic medium gas fuel burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1821657A true CN1821657A (en) | 2006-08-23 |
| CN100406802C CN100406802C (en) | 2008-07-30 |
Family
ID=36923162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100456880A Expired - Fee Related CN100406802C (en) | 2006-01-20 | 2006-01-20 | Porous metal-ceramic medium gas fuel burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100406802C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158469B (en) * | 2007-11-06 | 2010-06-02 | 东北大学 | Sectional type porous ceramic dielectric gas fuel combusting device |
| CN101929676A (en) * | 2010-08-05 | 2010-12-29 | 西安交通大学 | Catalytic porous medium burner |
| CN101737778B (en) * | 2009-12-08 | 2011-08-17 | 东北大学 | Diffusion type porous medium gas fuel combustor |
| CN103353166A (en) * | 2013-07-30 | 2013-10-16 | 中冶南方(武汉)威仕工业炉有限公司 | Porous medium flue gas hot blast stove capable of mixing cold air |
| CN104595897A (en) * | 2014-12-03 | 2015-05-06 | 武汉科技大学 | Single-layer porous foam ceramic plate partial pre-mixing fuel gas combustor |
| CN106382660A (en) * | 2016-08-31 | 2017-02-08 | 熊炜明 | Efficient oil-fume-removing cooker provided with porous oil-fume decomposer |
| CN108266726A (en) * | 2018-03-15 | 2018-07-10 | 沈阳工程学院 | A kind of porous media combustor of subsidiary heat exchange function |
| CN113991153A (en) * | 2021-09-30 | 2022-01-28 | 上海齐耀动力技术有限公司 | Tail gas combustor and solid oxide fuel cell system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6241510A (en) * | 1985-08-19 | 1987-02-23 | Tomoe Shokai:Kk | Nozzle for main mixing type gas burner |
| US5380192A (en) * | 1993-07-26 | 1995-01-10 | Teledyne Industries, Inc. | High-reflectivity porous blue-flame gas burner |
| JP2000283408A (en) * | 1999-03-31 | 2000-10-13 | Tokyo Gas Co Ltd | LOW NOx BURNER |
| CN2484481Y (en) * | 2001-06-06 | 2002-04-03 | 浙江大学 | Gradual-change porous-medium burner |
| JP2004011933A (en) * | 2002-06-03 | 2004-01-15 | Nissan Motor Co Ltd | Combustor, fuel reformer, and fuel cell system |
-
2006
- 2006-01-20 CN CN2006100456880A patent/CN100406802C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158469B (en) * | 2007-11-06 | 2010-06-02 | 东北大学 | Sectional type porous ceramic dielectric gas fuel combusting device |
| CN101737778B (en) * | 2009-12-08 | 2011-08-17 | 东北大学 | Diffusion type porous medium gas fuel combustor |
| CN101929676A (en) * | 2010-08-05 | 2010-12-29 | 西安交通大学 | Catalytic porous medium burner |
| CN103353166A (en) * | 2013-07-30 | 2013-10-16 | 中冶南方(武汉)威仕工业炉有限公司 | Porous medium flue gas hot blast stove capable of mixing cold air |
| CN104595897A (en) * | 2014-12-03 | 2015-05-06 | 武汉科技大学 | Single-layer porous foam ceramic plate partial pre-mixing fuel gas combustor |
| CN106382660A (en) * | 2016-08-31 | 2017-02-08 | 熊炜明 | Efficient oil-fume-removing cooker provided with porous oil-fume decomposer |
| CN108266726A (en) * | 2018-03-15 | 2018-07-10 | 沈阳工程学院 | A kind of porous media combustor of subsidiary heat exchange function |
| CN113991153A (en) * | 2021-09-30 | 2022-01-28 | 上海齐耀动力技术有限公司 | Tail gas combustor and solid oxide fuel cell system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100406802C (en) | 2008-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101158469B (en) | Sectional type porous ceramic dielectric gas fuel combusting device | |
| CN100406802C (en) | Porous metal-ceramic medium gas fuel burner | |
| CN100460756C (en) | Metal fiber and porous ceramic media surface burner | |
| CN101929676B (en) | Catalytic porous medium burner | |
| CN100404954C (en) | Porous metal medium burner capable of burning low heat value gas | |
| CN100394108C (en) | Flame length adjustable metal-ceramic porous medium gas fuel burner | |
| CN201827891U (en) | Anti-backfire premixing porous medium burner nozzle | |
| WO2016107383A1 (en) | Porous medium burner with stacked bed structure | |
| CN205535804U (en) | Fractional combustion flat flame formula regenerative burner | |
| WO2021022584A1 (en) | Angular porous medium burner | |
| CN1912460A (en) | Low NOx oil gun device heated by backheating | |
| CN102563639A (en) | Porous medium and heat pipe combustor for liquid fuel | |
| CN201331055Y (en) | External combustion type rich oxygen ignition and ultra low load stable combustion pulverized coal burner | |
| CN105674241A (en) | Constant volume type clean coal combustion device | |
| Ito et al. | Flameless Combustion of Premixed Gas Within Porous Radiant Burners using a Ceramic Fiber Mat as Burner Material | |
| CN102230630B (en) | Hot blast stove for burning waste gas | |
| CN203385194U (en) | Porous medium flue gas hot blast stove capable of burning inferior fuel | |
| CN203385195U (en) | Porous medium flue gas hot blast stove capable of mixing cold air | |
| CN106545853A (en) | It is a kind of that there is low NOXAnd the low calorific value coal gasification gas burner of steady combustion function | |
| CN2670752Y (en) | Direct coal powder burner | |
| CN2753968Y (en) | Controllable water-cooled pulverized-coal cyclone low-duct liquid slagging burner | |
| JP3638170B2 (en) | High temperature furnace oxygen gas burner | |
| CN205878145U (en) | Pulverized coal boiler | |
| CN215676370U (en) | Furnace for melting metal charge | |
| CN2793550Y (en) | Boiler with tailed gas of carbon black as fuel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080730 Termination date: 20110120 |