CN212108384U - Heat-storage premixed biomass gas burner - Google Patents
Heat-storage premixed biomass gas burner Download PDFInfo
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- CN212108384U CN212108384U CN202020645164.0U CN202020645164U CN212108384U CN 212108384 U CN212108384 U CN 212108384U CN 202020645164 U CN202020645164 U CN 202020645164U CN 212108384 U CN212108384 U CN 212108384U
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- 238000005338 heat storage Methods 0.000 title claims abstract description 29
- 239000002028 Biomass Substances 0.000 title claims abstract description 25
- 238000002485 combustion reaction Methods 0.000 claims abstract description 84
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 239000006260 foam Substances 0.000 claims abstract description 16
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 65
- 238000009825 accumulation Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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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
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- Gas Burners (AREA)
Abstract
The utility model discloses a heat-accumulating premixed biomass gas burner, which comprises a porous medium heat-accumulating premixed pipeline, an inner combustion-supporting air pipeline, an outer gas pipeline, an outer combustion-supporting air pipeline, a first sleeve, an inner combustion-supporting air rotational flow adjusting pull rod, a second sleeve, an outer combustion-supporting air rotational flow adjusting pull rod, a plurality of inner combustion-supporting air axial rotational flow blades and a plurality of outer gas axial rotational flow blades; the porous medium heat storage premixing pipeline, the inner combustion-supporting air pipeline, the outer gas pipeline and the outer combustion-supporting air pipeline are sequentially distributed from inside to outside, a ceramic foam type porous medium is filled in an outlet of the porous medium heat storage premixing pipeline, a central gas pipeline and a central combustion-supporting air pipeline are coaxially communicated with an inlet of the porous medium heat storage premixing pipeline, and the combustor can achieve the purpose of efficient and low-pollution combustion of biomass gas.
Description
Technical Field
The utility model belongs to the technical field of combustion apparatus, a heat accumulation mixes living beings gas burner in advance is related to.
Background
Energy is a basic industry related to national civilization, energy consumption is accelerated gradually as the economic development of China enters a new normal state, the problems of energy utilization efficiency and development quality are increasingly prominent, the energy structure is diversified, a clean, low-carbon, safe and efficient modern energy system is built, and the energy system is a great historical mission for energy development and reformation. Therefore, the energy is saved, the available range of the energy is expanded, and the method is extremely important for the economic construction of China. The application of low-calorific-value fuel such as biomass gas can improve the comprehensive utilization efficiency of energy, solve the problem of treatment of domestic production garbage and waste, is beneficial to environmental purification and pollutant emission control, and is a research hotspot of energy industry in recent years.
Low calorific value gas, typically less than 6.28MJ/m3The biomass pyrolysis process mainly generates CO and CH4、C2H2The calorific value of the combustible gas is about 4-6 MJ/m3Belongs to a conventional low-heating value fuel gas. The low-heat value gas is difficult to ignite and control under the traditional direct combustion mode, and phenomena such as tempering, blow out can appear in the combustion process, and its burning of unable stable control, if regard it as the direct evacuation of waste gas, not only cause the serious waste of the energy, further can cause environmental pollution and lead to greenhouse effect, consequently need develop a clean efficient novel living beings gas burner, improve its availability factor, enlarge the energy utilization scope.
In recent years, researchers in the field of combustion have continuously researched and researched to develop a series of high-efficiency clean combustion technologies for gas fuels, such as pulsation, catalysis, oxygen enrichment, high-temperature preheating and porous medium combustion technologies, and on the basis of the technologies, different types of gas burners, such as high-speed, oxygen enrichment, high-temperature air combustion, radiant tube burners and the like, are generated. As a novel combustion mode, the porous medium combustion technology can give consideration to high-efficiency combustion and low pollutant emission, and is favored by students in the combustion field of various countries. Due to the specific physical structure of the porous medium, the porous medium combustion technology has the advantages of high combustion rate and combustion strength, wide combustion area, uniform heat load distribution, high combustion efficiency, low pollutant discharge, small equipment volume, compact structure and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a heat accumulation mixes biomass gas burner in advance, this combustor can reach the purpose that the high efficiency of biomass gas, low pollution burning.
In order to achieve the above object, the heat-accumulating premixed biomass gas-fuel burner of the present invention comprises a porous medium heat-accumulating premixed pipe, an inner combustion-supporting air pipe, an outer gas pipe, an outer combustion-supporting air pipe, a first sleeve, an inner combustion-supporting air swirl adjusting pull rod, a second sleeve, an outer combustion-supporting air swirl adjusting pull rod, a plurality of inner combustion-supporting air axial swirl vanes and a plurality of outer gas axial swirl vanes;
the porous medium heat storage premixing pipeline, the inner combustion-supporting air pipeline, the outer gas pipeline and the outer combustion-supporting air pipeline are sequentially distributed from inside to outside, a ceramic foam type porous medium is filled in an outlet of the porous medium heat storage premixing pipeline, and an inlet of the porous medium heat storage premixing pipeline is coaxially communicated with a central gas pipeline and a central combustion-supporting air pipeline;
each inner combustion air axial swirl vane is circumferentially arranged in an annular channel between the inner combustion air pipeline and the porous medium heat storage premixing pipeline, one end of a first sleeve is connected with each inner combustion air axial swirl vane, the other end of the first sleeve is connected with one end of an inner combustion air swirl adjusting pull rod, and the other end of the inner combustion air swirl adjusting pull rod penetrates out of the annular channel between the inner combustion air pipeline and the porous medium heat storage premixing pipeline;
each outer gas axial rotational flow blade is positioned in an annular channel between the inner combustion-supporting air pipeline and the outer gas pipeline, one end of the second sleeve is connected with each outer gas axial rotational flow blade, the other end of the second sleeve is connected with one end of the outer gas rotational flow adjusting pull rod, and the other end of the outer gas rotational flow adjusting pull rod penetrates out of the annular channel between the inner combustion-supporting air pipeline and the outer gas pipeline.
The first sleeve is connected with the inner combustion-supporting air rotational flow adjusting pull rod through a first lug plate;
the second sleeve is connected with the outer gas swirl adjusting pull rod through a second lug plate.
The first sleeve, the second sleeve and the porous medium heat storage premixing pipeline are coaxially arranged.
The ceramic foam type porous medium is made of alumina, silicon carbide or zirconia.
The utility model discloses following beneficial effect has:
heat accumulation mixes living beings gas burner in advance when concrete operation, adopt porous medium heat accumulation to mix burning mode in advance and fuel classification and air classification double-register wind whirl burning mode and combine organically, the multiple high-efficient low pollution burning mode of coupling. Particularly, the low-calorific-value biomass gas used for initial combustion and forming a flame core is communicated with combustion airThe gas pipeline passing through the center and the combustion-supporting air pipeline are respectively fed into the porous medium heat-storage premixing pipeline to be fully mixed, the porous medium heat-storage premixing pipeline is filled with ceramic foam type porous media, during the combustion process of the premixed gas in the porous media, due to the special physical structure of the porous medium, the premixed gas generates strong mixing disturbance in the internal pores of the porous medium, heat is conducted and strongly radiated through the porous medium framework after initial combustion to form heat backflow, preheating the upstream premixed gas, rapidly expanding a combustion reaction area, reducing the loss of incomplete combustion heat of the premixed gas, absorbing partial combustion heat to store heat due to higher specific heat capacity of the porous medium, thereby strengthening internal radiation heat exchange and reducing ignition heat at the initial stage of combustion, and forming a stable flame core at a nozzle of the porous medium heat storage premixing pipeline; the outer gas pipeline is axially cyclone-fed to improve the turbulence of gas, which is beneficial to the mixing and combustion of biomass gas and high-temperature flue gas; the rest combustion-supporting air is fed in by stages through the inner combustion-supporting air pipeline and the outer combustion-supporting air pipeline, the inner combustion-supporting air pipeline and the outer combustion-supporting air pipeline are respectively of an axial and tangential rotational flow air inlet double air adjusting structure, a stable backflow area can be formed at a nozzle of the combustor, and backflow high-temperature flue gas heats upstream biomass gas so as to improve the combustion efficiency; in addition, the porous medium has good heat exchange characteristics, so that the temperature gradient of a combustion area is gentle, the average temperature of the combustion area is relatively low, meanwhile, the air excess coefficient at the initial stage of combustion can be reduced by staged air supply, a reducing atmosphere is formed at a nozzle of a combustor, and NO is inhibited under the combined action of the lower combustion temperature and the reducing atmospherexThe aim of high-efficiency low-pollution combustion of the biomass gas is achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
Wherein, 1 is a porous medium heat accumulation premixing pipeline, 2 is a central gas pipeline, 3 is a central combustion air pipeline, 4 is an inner combustion air pipeline, 5 is an outer gas pipeline, 6 is an outer combustion air pipeline, 7 is an inner combustion air axial swirl blade, 8 is an outer combustion air axial swirl blade, 9 is an outer combustion air tangential swirl blade, 10 is an inner combustion air swirl adjusting pull rod, and 11 is an outer combustion air swirl adjusting pull rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the heat accumulating premixed biomass gas burner of the present invention includes a porous medium heat accumulating premixed pipe 1, an inner combustion air pipe 4, an outer gas pipe 5, an outer combustion air pipe 6, a first sleeve, an inner combustion air swirl adjusting pull rod 10, a second sleeve, an outer combustion air swirl adjusting pull rod 11, a plurality of inner combustion air axial swirl vanes 7 and a plurality of outer combustion air axial swirl vanes 8; the porous medium heat storage premixing pipeline 1, the inner combustion-supporting air pipeline 4, the outer gas pipeline 5 and the outer combustion-supporting air pipeline 6 are sequentially distributed from inside to outside, a ceramic foam type porous medium is filled in an outlet of the porous medium heat storage premixing pipeline 1, and a central gas pipeline 2 and a central combustion-supporting air pipeline 3 are coaxially communicated with an inlet of the porous medium heat storage premixing pipeline 1; each inner combustion air axial swirl vane 7 is circumferentially arranged in an annular channel between the inner combustion air pipeline 4 and the porous medium heat storage premixing pipeline 1, one end of a first sleeve is connected with each inner combustion air axial swirl vane 7, the other end of the first sleeve is connected with one end of an inner combustion air swirl adjusting pull rod 10, and the other end of the inner combustion air swirl adjusting pull rod 10 penetrates out of the annular channel between the inner combustion air pipeline 4 and the porous medium heat storage premixing pipeline 1; each outer gas axial swirl vane 8 is positioned in an annular channel between the inner combustion air pipeline 4 and the outer gas pipeline 5, one end of the second sleeve is connected with each outer gas axial swirl vane 8, the other end of the second sleeve is connected with one end of the outer gas swirl adjusting pull rod 11, and the other end of the outer gas swirl adjusting pull rod 11 penetrates out of the annular channel between the inner combustion air pipeline 4 and the outer gas pipeline 5.
The first sleeve is connected with the inner combustion-supporting air rotational flow adjusting pull rod 10 through a first lug plate; the second sleeve is connected with the outer gas swirl adjusting pull rod 11 through a second lug plate; the first sleeve, the second sleeve and the porous medium heat storage premixing pipeline 1 are coaxially arranged; the ceramic foam type porous medium is made of alumina, silicon carbide or zirconia.
The preheated direct-current biomass gas and the combustion-supporting air are respectively sent into an inlet of a porous medium heat-storage premixing pipeline 1 through a central gas pipeline 2 and a central combustion-supporting air pipeline 3 to be preliminarily premixed, and then are fully mixed through a ceramic foam type porous medium at an outlet of the porous medium heat-storage premixing pipeline 1, wherein the premixed gas generates strong mixing disturbance in pores inside the ceramic foam type porous medium, heat conduction and strong heat radiation are conducted through a porous medium framework after combustion to form heat backflow, the upstream premixed gas is preheated, a combustion reaction area is rapidly expanded, the heat loss caused by incomplete combustion of the premixed gas is reduced, the ceramic foam type porous medium absorbs part of combustion heat to store heat due to high specific heat capacity of the ceramic foam type porous medium, the radiation heat exchange inside the porous medium heat-storage premixing pipeline 1 is enhanced, and the initial ignition heat during combustion is reduced, the stable flame core is formed at the nozzle of the burner; the outer gas pipeline 5 is axially cyclone-fed, the biomass gas rotates through the outer gas axial cyclone blades 8 to improve the turbulence intensity of the biomass gas, the mixing and combustion of the biomass gas and high-temperature flue gas are facilitated, and the cyclone intensity can be adjusted by adjusting the front and rear positions of the outer gas axial cyclone blades 8 through the outer gas cyclone adjusting pull rod 11; the rest combustion air is fed in by stages through an inner combustion air pipeline 4 and an outer combustion air pipeline 6, the inner combustion air and the outer combustion air are respectively of a double air adjusting structure for feeding air in a swirling mode in the axial direction and the tangential direction, the double air adjusting structure can form a stable backflow area at a nozzle of the combustor, backflow high-temperature flue gas heats upstream biomass gas so as to improve the combustion efficiency, and the swirling strength is respectively adjusted by the position of an axial swirling vane 7 of the inner combustion air and the opening of a tangential swirling vane 9 of the outer combustion air; the good heat exchange characteristic of the ceramic foam type porous medium enables the temperature gradient of a combustion area to be smooth, the average temperature of the combustion area to be relatively low, meanwhile, the air excess coefficient at the initial stage of combustion can be reduced by staged air supply, a nozzle of a combustor forms and maintains a reducing atmosphere, and the NO can be reduced by the combined action of the twoxGenerating; heat storage premixed combustion mode and combustion through ceramic foam type porous mediumThe material grading and air grading double-air regulation cyclone combustion mode is organically combined, and the aim of high efficiency and low pollution of the biomass gas is fulfilled.
The utility model discloses it is difficult for burning to low heat value living beings gas under to traditional combustion mode, the shortcoming that pollutant discharge is high, this combustor can reach the purpose of the high-efficient low pollution burning of living beings gas, the ceramic foam type porous medium of porous medium heat accumulation premixing pipe 1 inside mixes the disturbance and provides good condition for the burning for the initial stage of low heat value living beings gas, the good heat transfer characteristic of ceramic foam type porous medium can reach the purpose of heat accumulation, improve the intensity of radiation heat transfer by a wide margin, fuel is hierarchical, the mode of air classification dual air register whirl burning can form and maintain stable backward flow district and reducing atmosphere at the combustor spout, be favorable to the backward flow of high temperature flue gas and restrain NOxThe utility model discloses to realizing the stable high-efficient low pollution burning of low calorific value living beings gas, enlarge the energy utilization scope and have the significance.
Claims (5)
1. A heat-accumulating premixed biomass gas-gas burner is characterized by comprising a porous medium heat-accumulating premixed pipeline (1), an inner combustion-supporting air pipeline (4), an outer gas pipeline (5), an outer combustion-supporting air pipeline (6), a first sleeve, an inner combustion-supporting air rotational flow adjusting pull rod (10), a second sleeve, an outer gas rotational flow adjusting pull rod (11), a plurality of inner combustion-supporting air axial rotational flow blades (7) and a plurality of outer gas axial rotational flow blades (8);
the porous medium heat storage premixing pipeline (1), the inner combustion-supporting air pipeline (4), the outer gas pipeline (5) and the outer combustion-supporting air pipeline (6) are sequentially distributed from inside to outside, a ceramic foam type porous medium is filled in an outlet of the porous medium heat storage premixing pipeline (1), and an inlet of the porous medium heat storage premixing pipeline (1) is coaxially communicated with the central gas pipeline (2) and the central combustion-supporting air pipeline (3);
each inner combustion-supporting air axial swirl blade (7) is arranged in an annular channel between the inner combustion-supporting air pipeline (4) and the porous medium heat-storage premixing pipeline (1) along the circumferential direction, one end of a first sleeve is connected with each inner combustion-supporting air axial swirl blade (7), the other end of the first sleeve is connected with one end of an inner combustion-supporting air swirl adjusting pull rod (10), and the other end of the inner combustion-supporting air swirl adjusting pull rod (10) penetrates out of the annular channel between the inner combustion-supporting air pipeline (4) and the porous medium heat-storage premixing pipeline (1);
each outer gas axial swirl vane (8) is positioned in an annular channel between the inner combustion air pipeline (4) and the outer gas pipeline (5), one end of the second sleeve is connected with each outer gas axial swirl vane (8), the other end of the second sleeve is connected with one end of the outer gas swirl adjusting pull rod (11), and the other end of the outer gas swirl adjusting pull rod (11) penetrates out of the annular channel between the inner combustion air pipeline (4) and the outer gas pipeline (5).
2. The heat accumulating premixed biomass gas burner as claimed in claim 1, wherein the first sleeve is connected to the inner combustion air swirl adjusting lever (10) through a first lug plate.
3. The heat accumulating premixed biomass gas burner as claimed in claim 2, wherein the second sleeve is connected to the outer gas swirl regulating rod (11) through a second lug plate.
4. The heat accumulating premixed biomass gas burner as claimed in claim 1, wherein the first sleeve, the second sleeve and the porous medium heat accumulating premixed pipe (1) are coaxially arranged.
5. The heat accumulating premixed biomass gas burner as claimed in claim 1, wherein the ceramic foam type porous medium is alumina, silicon carbide or zirconia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020645164.0U CN212108384U (en) | 2020-04-24 | 2020-04-24 | Heat-storage premixed biomass gas burner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020645164.0U CN212108384U (en) | 2020-04-24 | 2020-04-24 | Heat-storage premixed biomass gas burner |
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| CN212108384U true CN212108384U (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396873A (en) * | 2020-04-24 | 2020-07-10 | 华能国际电力股份有限公司 | Heat storage premixed biomass gas burner and use method thereof |
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- 2020-04-24 CN CN202020645164.0U patent/CN212108384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396873A (en) * | 2020-04-24 | 2020-07-10 | 华能国际电力股份有限公司 | Heat storage premixed biomass gas burner and use method thereof |
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