CN110195865A - A kind of even gas distribution formula premix burner - Google Patents
A kind of even gas distribution formula premix burner Download PDFInfo
- Publication number
- CN110195865A CN110195865A CN201910469506.XA CN201910469506A CN110195865A CN 110195865 A CN110195865 A CN 110195865A CN 201910469506 A CN201910469506 A CN 201910469506A CN 110195865 A CN110195865 A CN 110195865A
- Authority
- CN
- China
- Prior art keywords
- gas
- mixing chamber
- distribution formula
- gas distribution
- premix burner
- 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.)
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Links
- 238000012935 Averaging Methods 0.000 claims abstract description 24
- 229920000914 Metallic fiber Polymers 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 239000011819 refractory material Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 18
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 57
- 239000000567 combustion gas Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007323 disproportionation reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
A kind of even gas distribution formula premix burner, including along gas trend diffuser casing, mixing chamber, gas averaging board, metallic fiber surface and the flue for being equipped with premix gas entrance that sequentially arrangement fixed-link is integral；The premix gas entrance is set to diffuser casing underlying gas upstream end；The expansion chamber exit is connect with mixing chamber；The gas averaging board is between mixing chamber and metallic fiber surface；The flue is located at the outside on metallic fiber surface.The invention has the following advantages that enhancing the mixing uniformity of premix gas；Improve the gas distribution uniformity of burning surface；So that efficiency of combustion is reached the discharge of 99.99% or more, NOx lower than 15ppmv (with 3% oxymeter).
Description
Technical field
The present invention relates to full premix porous surface field of combustion technology more particularly to a kind of even gas distribution formula premixed combustions
Device, efficient, clean combustion suitable for organic exhaust gas.
Background technique
Since the heating conduction and radiance of gas are poor, traditional burning characterized by free flame can not be kept away
Have the shortcomings that temperature distributing disproportionation, combustion zone are narrow, pollutant emission is excessive with exempting from.And the premixed combustion in porous media
Mode be a kind of admixture of gas high temperature resistant, good heat conductivity special porous media material in the process burnt.Premix combustion
Burning mode premixes porous surface burning entirely has burning velocity fast, the short feature of flame, in the lesser condition of coefficient of excess air
Under, it can reach completely burned, the discharge amount very little of CO and NOx, and can equably conduct heat with convection current, radiation mode, thermal effect
Rate is higher.However in practical applications, the factors such as low pressure premixes the undercompounding of gas, the gas of burning surface is unevenly distributed
Significantly impact the efficiency of combustion and low NOx drainage performance of such burner.
Patent document 1 (201711007393.9) discloses a kind of mixed steam stove of the burning with even gas distribution device, burning
Chamber inlet is connect with combustion chamber, and even gas distribution device is between combustion chamber and mixing chamber, and even gas distribution fills again for qi-emitting hole setting
The periphery set.The reformation for generating high-temperature gas to combustion chamber is realized by even gas distribution device, adjusts the position of qi-emitting hole, is realized
The reinforcing of height warm air mixes.Another aspect even gas distribution device also can effectively keep the temperature combustion chamber, avoid putting out a fire.
Patent document 2 (201611043074.9) discloses a kind of three-dimensional mixing chamber of full premix of pressure, on nozzle uniformly
Several spray orifices are provided with, and the interconnecting piece of gas conduct pipe and nozzle is set as Curved structure.It is designed by reasonable structure
It is uniform, efficient to realize that combustion gas mixes with air, guarantees the burning gases requirement of full premix static surface combustion system.
However, 1 entry of combustion chamber of patent document is straight pipe, boundary layer flow caused by wall effect enters combustion chamber
There are velocity gradient on mouth radial section, the performance that this VELOCITY DISTRIBUTION is not for flat surface burning is affected.Specially
Sharp document 2 is reinforced the radial of two kinds of gases with primary air direction combustion gas injection direction and is mixed by way of at an angle,
But this mode requires the discharge velocity of combustion gas larger, can just there is preferable mixed effect, this requires combustion gas it is with higher into
Mouth pressure.
And in VOCs treatment field, the pressure of combustion gas is often lower, is not appropriate for infusing using the combustion gas of patent document 2
Enter mode, furthermore flowing of the flat surface burner to realize efficient, clean combustion, before combustion chamber is entered to premix gas
Speed, the consistency in direction and premix gas mixture homogeneity are more demanding.
Summary of the invention
In view of the above technical problems, the embodiment of the present invention is solved existing by providing a kind of even gas distribution formula premix burner
There is gas mixing in technology bad, the problem of burning surface temperature distributing disproportionation.
The purpose of the present invention is achieved through the following technical solutions:
A kind of even gas distribution formula premix burner, including along gas trend sequentially being equipped with of being integral of arrangement fixed-link
Premix diffuser casing, mixing chamber, gas averaging board, metallic fiber surface and the flue of gas entrance；The premix gas entrance is set to expansion
Dissipate room underlying gas upstream end；The expansion chamber exit is connect with mixing chamber；The gas averaging board is located at mixing chamber and metallic fiber
Between surface；The flue is located at the outside on metallic fiber surface.
Preferably, the diffusion chamber shape is frustum of a cone or butt rectangular pyramid, and cone angle is 5 ° -21 °.
Preferably, the mixing chamber shape is cylindrical or four prism type, with the diffuser casing frustum of a cone or butt
Rectangular pyramid matches.
Preferably, the mixing chamber cross-sectional area is 1.5 times -2 times of expansion chamber exit cross-sectional area.
Specifically, it is identical through stomata to be uniformly distributed diameter for the gas averaging board surface.
Preferably, described through stomata arrangement mode is equilateral triangle or regular quadrangle, and center is away from for 2mm-3mm, aperture
For 1mm-2mm.
Further, the flue is uniformly laid with refractory material layer along inner wall.
Specifically, the diffuser casing, mixing chamber and flue are equipped with the ring flange that is mutually permanently connected, on the ring flange
Bolt and nut connection through-hole is offered, the gas averaging board is fixed on mixing chamber upper end edge anchor ring, and the metallic fiber surface is set
It is placed on gas averaging board.
The invention has the following advantages that (1) enhances the mixing uniformity of premix gas；(2) gas of burning surface is improved
Body distributing homogeneity；(3) efficiency of combustion is made to reach the discharge of 99.99% or more, NOx lower than 15ppmv (with 3% oxymeter).
Detailed description of the invention
Fig. 1 is even gas distribution formula premix burner schematic diagram in the embodiment of the present invention.
Fig. 2 is conical butt diffuser casing and respective cylindrical mixing chamber schematic diagram in the embodiment of the present invention 1.
Fig. 3 is butt rectangular pyramid and corresponding four prism type mixing chamber schematic diagram in the embodiment of the present invention 2.
Wherein: 1- premixes gas entrance, 2- diffuser casing, 3- mixing chamber, 31- mixing chamber upper end edge anchor ring, 4- gas averaging board, 41-
Through stomata, 5- metallic fiber surface, 6- flue, 61- refractory material layer, 62- inner wall, 7- ring flange, the connection of 71- bolt and nut
Through-hole.
Arrow direction is gas (fuel gas and air) trend in Fig. 1.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention in involved technical characteristic can be combined with each other as long as they do not conflict with each other.
Embodiment 1:
As shown in Figure 1, the present invention include premix gas entrance, diffuser casing, mixing chamber, gas averaging board, metallic fiber surface and
Flue.
A kind of even gas distribution formula premix burner, including along gas trend sequentially being equipped with of being integral of arrangement fixed-link
Premix diffuser casing, mixing chamber, gas averaging board, metallic fiber surface and the flue of gas entrance；The premix gas entrance is set to expansion
Dissipate room underlying gas upstream end；The expansion chamber exit is connect with mixing chamber；The gas averaging board is located at mixing chamber and metallic fiber
Between surface；The flue is located at the outside on metallic fiber surface.
As shown in Fig. 2, the diffusion chamber shape is frustum of a cone, cone angle is 15 °.
The mixing chamber shape is cylinder, is matched with the diffuser casing frustum of a cone.
The mixing chamber cross-sectional area is 1.5 times of expansion chamber exit cross-sectional area.
It is identical through stomata that the gas averaging board surface has been uniformly distributed diameter.
Described through stomata arrangement mode is equilateral triangle or regular quadrangle, and center is away from for 2mm, aperture 1mm.
The flue is uniformly laid with refractory material layer along inner wall.
The diffuser casing, mixing chamber and flue are equipped with the ring flange being mutually permanently connected, and offer on the ring flange
Bolt and nut connects through-hole, and the gas averaging board is fixed on mixing chamber upper end edge anchor ring, and the metallic fiber surface is set to
On gas plate.Refractory material layer is arranged on gas averaging board and is fixed on mixing chamber upper end edge anchor ring by gas averaging board, such as Fig. 1 institute
Show.
Diffuser casing is entered by premix gas entrance after fuel gas and air mixing, diffuser casing cone angle is 15 ° of (another embodiments
In be 5 °), specific cone angle separates flow boundary layer, and so as to avoid fluid, there are biggish speed on axial cross section
Gradient keeps expansion chamber exit section fluid VELOCITY DISTRIBUTION uniform.Since expansion chamber exit sectional area only has mixing chamber cross-sectional area
1/2 (in another embodiment be 2/3), the sudden enlargement of runner further enhances the mixability of fuel gas and air.
It is equipped with gas averaging board between mixing chamber and metallic fiber surface, is dispersed with equilateral triangle or regular quadrangle through gas on gas averaging board
Hole, through the center of stomata away from for 2mm (being 3mm in another embodiment), aperture is 1mm (being 2mm in another embodiment),
For the fluid of turbulent condition after running through stomata, mixer velocity flow profile is uniform and direction is consistent is dispersed to metal fibre in mixing chamber
It burns in dimension table face.The material on the metallic fiber surface is refractory metal silk, is made up of woven or knitting type, this
In embodiment, the metallic fiber surface is Aludirome wire, and high-temperature resistant result is good.
Embodiment 2:
Difference from Example 1 is:
As shown in figure 3, the diffusion chamber shape is butt rectangular pyramid, cone angle is 21 °.
The mixing chamber shape is four prism type, is matched with the diffuser casing butt rectangular pyramid.
The mixing chamber cross-sectional area is 1.5 times of expansion chamber exit cross-sectional area.
Described through stomata arrangement mode is equilateral triangle or regular quadrangle, and center is away from for 3mm, aperture 2mm.
Remaining content is the same as embodiment 1.
Diffuser casing is entered by premix gas entrance after fuel gas and air mixing, diffuser casing cone angle is 21 °, and specific cone angle can
Flow boundary layer is separated, there are biggish velocity gradients on axial cross section so as to avoid fluid, cut expansion chamber exit
Surface current body VELOCITY DISTRIBUTION is uniform.Since expansion chamber exit sectional area only has the 2/3 of mixing chamber cross-sectional area, the sudden enlargement of runner
Further enhance the mixability of fuel gas and air.Gas averaging board, gas averaging board are equipped between mixing chamber and metallic fiber surface
On be dispersed with equilateral triangle or regular quadrangle through stomata, through the center of stomata away from for 3mm, aperture 2mm, in mixing chamber
The fluid of turbulent condition through after the stomata, mixer velocity flow profile is uniform and direction it is consistent be dispersed to metallic fiber surface into
Row burning.
The above is presently preferred embodiments of the present invention, but the present invention should not be limited to the embodiment and attached drawing institute
Disclosure.So all do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, guarantor of the present invention is both fallen within
The range of shield.
Claims (9)
1. a kind of even gas distribution formula premix burner, which is characterized in that including along gas trend, sequentially arrangement fixed-link is one
Whole diffuser casing, mixing chamber, gas averaging board, metallic fiber surface and the flue for being equipped with premix gas entrance；The premix gas enters
Mouth is set to diffuser casing underlying gas upstream end；The expansion chamber exit is connect with mixing chamber；The gas averaging board is located at mixing chamber
Between metallic fiber surface；The flue is located at the outside on metallic fiber surface.
2. even gas distribution formula premix burner according to claim 1, which is characterized in that the diffusion chamber shape is butt
Circular cone or butt rectangular pyramid, cone angle are 5 ° -21 °.
3. even gas distribution formula premix burner according to claim 2, which is characterized in that the mixing chamber shape is cylinder
Shape or four prism type are matched with the diffuser casing frustum of a cone or butt rectangular pyramid.
4. even gas distribution formula premix burner according to claim 3, which is characterized in that the mixing chamber cross-sectional area is
1.5 times -2 times of expansion chamber exit cross-sectional area.
5. even gas distribution formula premix burner described in any one of -4 according to claim 1, which is characterized in that the gas averaging board
It is identical through stomata that surface has been uniformly distributed diameter.
6. even gas distribution formula premix burner according to claim 5, which is characterized in that described to run through stomata arrangement mode
For equilateral triangle or regular quadrangle, center is away from for 2mm-3mm, aperture 1mm-2mm.
7. even gas distribution formula premix burner described in any one of -4,6 according to claim 1, which is characterized in that the flue
Refractory material layer is uniformly laid with along inner wall.
8. even gas distribution formula premix burner according to claim 5, which is characterized in that the flue is uniformly applied along inner wall
Equipped with refractory material layer.
9. even gas distribution formula premix burner according to claim 1, which is characterized in that the diffuser casing, mixing chamber with
And flue is equipped with the ring flange being mutually permanently connected, and bolt and nut connection through-hole, the gas averaging board are offered on the ring flange
It is fixed on mixing chamber upper end edge anchor ring, the metallic fiber surface is set on gas averaging board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469506.XA CN110195865A (en) | 2019-05-31 | 2019-05-31 | A kind of even gas distribution formula premix burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469506.XA CN110195865A (en) | 2019-05-31 | 2019-05-31 | A kind of even gas distribution formula premix burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110195865A true CN110195865A (en) | 2019-09-03 |
Family
ID=67753620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910469506.XA Withdrawn CN110195865A (en) | 2019-05-31 | 2019-05-31 | A kind of even gas distribution formula premix burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110195865A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121021A (en) * | 2019-12-18 | 2020-05-08 | 史星宇 | Low-nitrogen combustion device with free diffusion premixed combustion layer and combustion head thereof |
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| JPH07324703A (en) * | 1994-05-31 | 1995-12-12 | Matsushita Electric Ind Co Ltd | Catalyst combustion device |
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| JPH1151329A (en) * | 1997-08-01 | 1999-02-26 | Osaka Gas Co Ltd | Burner |
| KR19990085123A (en) * | 1998-05-14 | 1999-12-06 | 최수현 | Automatic BBQ cooker with natural gas-fired gas burner and ball / rotation function using porous heat-resistant metal fiber mat |
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| CN201628220U (en) * | 2010-04-23 | 2010-11-10 | 佛山市顺德区辉洋环保科技有限公司 | Complete-premixing infrared radiation gas combustor for metal fibre surface combustion |
| CN103292324A (en) * | 2012-02-23 | 2013-09-11 | 马清飞 | Premixed type blast combustion device |
| CN106642103A (en) * | 2016-10-21 | 2017-05-10 | 浙江大学 | Porous medium burner for gas fuel |
| WO2017177853A1 (en) * | 2016-04-14 | 2017-10-19 | 中国科学院大连化学物理研究所 | Catalysis flameless combustion device and combustion method producing extremely-low pollutant emission |
| CN108730975A (en) * | 2017-04-24 | 2018-11-02 | 上海诺特飞博燃烧设备有限公司 | Diffusion type all-premixing burner |
| CN210601608U (en) * | 2019-05-31 | 2020-05-22 | 武汉索克能源科技有限公司 | Gas uniform distribution type premixing burner |
-
2019
- 2019-05-31 CN CN201910469506.XA patent/CN110195865A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05172315A (en) * | 1991-12-24 | 1993-07-09 | Tokyo Gas Co Ltd | Surface combustion burner |
| JPH07324703A (en) * | 1994-05-31 | 1995-12-12 | Matsushita Electric Ind Co Ltd | Catalyst combustion device |
| JPH0972512A (en) * | 1995-09-08 | 1997-03-18 | Matsushita Electric Ind Co Ltd | Burner and burner port unit |
| JPH1151329A (en) * | 1997-08-01 | 1999-02-26 | Osaka Gas Co Ltd | Burner |
| KR19990085123A (en) * | 1998-05-14 | 1999-12-06 | 최수현 | Automatic BBQ cooker with natural gas-fired gas burner and ball / rotation function using porous heat-resistant metal fiber mat |
| JP2000186804A (en) * | 1998-12-21 | 2000-07-04 | Matsushita Electric Ind Co Ltd | Catalyst combusting device |
| KR20040040577A (en) * | 2002-11-07 | 2004-05-13 | 한국에너지기술연구원 | premix type knitted metal fiber mat gas burner |
| KR200363754Y1 (en) * | 2004-07-13 | 2004-10-11 | 동양매직 주식회사 | Gas Burner using Radiant Heat |
| KR100739541B1 (en) * | 2006-02-06 | 2007-07-18 | 엘지전자 주식회사 | Gas radiation burner |
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| KR20080074390A (en) * | 2007-02-08 | 2008-08-13 | 화이버텍 (주) | Porous metal fiber media for infra-red burner |
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| CN101806457A (en) * | 2010-04-23 | 2010-08-18 | 佛山市顺德区辉洋环保科技有限公司 | Fully-premixed metal fiber surface combustion infrared radiation type gas burner |
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| CN103292324A (en) * | 2012-02-23 | 2013-09-11 | 马清飞 | Premixed type blast combustion device |
| WO2017177853A1 (en) * | 2016-04-14 | 2017-10-19 | 中国科学院大连化学物理研究所 | Catalysis flameless combustion device and combustion method producing extremely-low pollutant emission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121021A (en) * | 2019-12-18 | 2020-05-08 | 史星宇 | Low-nitrogen combustion device with free diffusion premixed combustion layer and combustion head thereof |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200923 Address after: 430000 no.509 luojiadun, Qiaokou District, Wuhan City, Hubei Province Applicant after: Zhou Jicheng Address before: 430074 new technology development in East Lake, Wuhan, Hubei, No. 1, 269, 1, Optics Valley Chuang Jie street. Applicant before: WUHAN SUOKE ENERGY TECHNOLOGY Co.,Ltd. |
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Application publication date: 20190903 |