CN104964281A - Fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner - Google Patents
Fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner Download PDFInfo
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- CN104964281A CN104964281A CN201510382015.3A CN201510382015A CN104964281A CN 104964281 A CN104964281 A CN 104964281A CN 201510382015 A CN201510382015 A CN 201510382015A CN 104964281 A CN104964281 A CN 104964281A
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- brick layer
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- fire brick
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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
- F23D14/12—Radiant burners
- F23D14/18—Radiant burners using catalysis for flameless combustion
-
- 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
Abstract
The invention discloses a fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner, and relates to burners. The burner comprises a burner body, an inner refractory brick layer and an outer refractory brick layer; the outer refractory brick layer is internally provided with a gas inlet channel and a gas outlet channel, the inner refractory brick layer is internally provided with a pre-mixed gas diffusion chamber, a perforated plate, a pre-mixed gas voltage-sharing chamber, a flame-resistant protective screen plate and a foamed ceramic plate; the pre-mixed gas diffusion chamber is communicated with a pre-mixed gas supply pipe, and the outer refractory brick layer arranged on the foamed ceramic plate is provided with high-temperature-resistant infrared silica glass which blocks a burning opening; an upper compressing plate is arranged above the high-temperature-resistant infrared silica glass, a lower compressing plate is arranged on the lower end face of the burner body, and the upper compressing plate is connected with the lower compressing plate through a fastening piece. According to the fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner, during burning, smoke and flames are not generated, the heating efficiency is high, heating is even, the emission of NOX can be reduced, the burner can be used for an annealing technology where burner atmosphere needs to be ensured, and during the burning, the radiation intensity is high; the fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner has the advantages that the installation is convenient, the service life is long, the energy is saved, the environment is protected, and the application range is wide; the burner is easy to use and popularize.
Description
Technical field
The present invention relates to a kind of burner, particularly a kind of gas catalysis nonflame near-infrared indirect porous media combustor.
Background technology
At present, in China's industrial production, the burning of gaseous fuel is mainly the space combustion of feature with free flame, and the steep and temperature distributing disproportionation of thermograde near the flame front of this combustion system, the existence in district of localized hyperthermia causes a large amount of NO
xgenerate, simultaneously, also there is the problems such as incomplete combustion, the thermal efficiency is low, combustion stability is poor, burning pollutant discharge is higher, public number of mandate is that namely the patent of CN101929676B discloses a kind of catalytic porous medium burner, this burner effectively can reduce burning pollutant discharge, but because its premixed gas directly enters catalytic metal fibrofelt and ceramic foam burning from premixer through porous plate, the distribution of premixed gas is still even not, thus it is also even not to make heating-up temperature distribute, its efficiency of heating surface is still lower.In addition, the heater of some annealing furnaces is as the heater of stainless steel band bright annealing furnace, and the waste gas produced when requiring that it burns must not directly enter in stove, to ensure that the atmosphere in annealing furnace is not subject to external influence, prevent stainless steel band to be oxidized when high-temperature heating, reach the effect of light.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of gas catalysis nonflame near-infrared indirect porous media combustor, to improve the efficiency of heating surface, improve the uniformity of heating simultaneously, reduces NO
xdischarge, also can be used for needing the annealing process ensureing furnace atmosphere.
The technical scheme solved the problems of the technologies described above is: a kind of gas catalysis nonflame near-infrared indirect porous media combustor, comprise burner body, heat-insulation layer, fire brick layer, described fire brick layer is positioned at burner body, described fire brick layer comprises the outer fire brick layer set gradually from outside to inside, interior fire brick layer, be provided with described heat-insulation layer between this outer fire brick layer and interior fire brick layer, in outer fire brick layer, be respectively equipped with inlet channel and outlet passageway; Premixed gas diffuser casing, perforated plate, the equal pressure chamber of premixed gas, resistance flame shield plates, foamed ceramic panel is disposed with by bottom to top in described interior fire brick layer, the bottom of described premixed gas diffuser casing is communicated with premixed gas air supply pipe, is provided with heat-preservation cotton between the periphery of premixed gas diffuser casing and interior fire brick layer; Be provided with port in the middle part of outer fire brick layer above foamed ceramic panel, the end face of this outer fire brick layer is provided with the high temperature resistant infrared quartz glass that one piece is blocked port; The top of high temperature resistant infrared quartz glass is also provided with pressure strip, and the lower surface of burner body is provided with lower pressure strip, and this lower pressure strip and upper pressure strip compress link together by being connected securing member.
Further technical scheme of the present invention is: bonded together by adhesive sheet A between resistance flame shield plates and foamed ceramic panel; Described foamed ceramic panel comprises macrocellular foam ceramic wafer and aperture foamed ceramic panel, and aperture foamed ceramic panel is positioned at the bottom of macrocellular foam ceramic wafer, is bonded together between aperture foamed ceramic panel and macrocellular foam ceramic wafer by adhesive sheet B.
Further technical scheme more of the present invention is: the porosity of described macrocellular foam ceramic wafer is 80 ~ 90%, and aperture is 10 ~ 20PPI, and thickness of slab is 10 ~ 50mm; On macrocellular foam ceramic wafer, also load has the rare metal catalytic combustion agent with fire-resistant oxidation resistant through high temperature sintering; The porosity of described aperture foamed ceramic panel is 80 ~ 90%, and aperture is 50 ~ 65PPI, and thickness of slab is 5 ~ 50mm.
Further technical scheme more of the present invention is: the material of described macrocellular foam ceramic wafer is: foam silicon carbide ceramics or silicon-carbon-silicon carbide foamed ceramics, or the foamed ceramics to be mixed by carborundum and alundum (Al2O3) bi-material, or the foamed ceramics to be mixed by carborundum and alundum (Al2O3) and silica three kinds of materials, or the foamed ceramics mixed by carborundum and alundum (Al2O3) and zirconia three kinds of materials; The material of described aperture foamed ceramic panel is alundum (Al2O3) foamed ceramics, or the foamed ceramics mixed by alundum (Al2O3) and zirconia bi-material.
Further technical scheme of the present invention is: the thickness of described resistance flame shield plates is 5 ~ 50mm, and resistance flame shield plates is evenly arranged the hole that diameter is 0.5 ~ 3mm, and pitch of holes is 3 ~ 20mm.
Further technical scheme of the present invention is: described resistance flame shield plates material is: alundum (Al2O3) porous ceramic film material, or zircite porous ceramic material, or the porous ceramic film material mixed by alundum (Al2O3) and zirconia bi-material.
Further technical scheme of the present invention is: the plate thickness of described perforated plate is 1 ~ 4mm, perforated plate is evenly arranged the hole that diameter is 0.5 ~ 3mm, and pitch of holes is 3 ~ 20mm; The infrared light transmission of described high temperature resistant infrared quartz glass is greater than 85%, and thickness of slab is 5 ~ 10mm.
Further technical scheme more of the present invention is: the refractory brick of described inside and outside fire brick layer is high temperature resistant fire-resistant casting brick, and the material of this refractory brick is diamond spar or zirconia.
Further technical scheme of the present invention is: described heat-insulation layer is high density aluminum oxide high-temperature fibre pad, high-density and high-temperature-resistant alumina fiber mat is also provided with between described outer fire brick layer and high temperature resistant infrared quartz glass, between high temperature resistant infrared quartz glass and upper pressure strip, be provided with high-density and high-temperature-resistant alumina fiber blanket, described heat-preservation cotton is alumina fibre heat-preservation cotton.
Of the present invention more further technical scheme be: described resistance flame shield plates, between foamed ceramic panel with interior fire brick layer inwall, high temperature resistant infrared quartz glass with all seal bonding clay by flexible high-temperature resistant between burner body inwall and be bonded together.
Owing to adopting said structure, the gas catalysis nonflame near-infrared indirect porous media combustor of the present invention compared with prior art, has following beneficial effect:
1. the efficiency of heating surface is high:
The present invention includes burner body, outer fire brick layer, interior fire brick layer, between outer fire brick layer and interior fire brick layer, heat-insulation layer is set, the outer wall of outer fire brick layer and the inwall of burner body closely cooperate, and are respectively equipped with inlet channel and outlet passageway in outer fire brick layer; Premixed gas diffuser casing, perforated plate, the equal pressure chamber of premixed gas, resistance flame shield plates, foamed ceramic panel is disposed with by bottom to top in interior fire brick layer, the bottom of premixed gas diffuser casing is communicated with premixed gas air supply pipe, be provided with port in the middle part of outer fire brick layer above foamed ceramic panel, this outer fire brick layer be provided with the high temperature resistant infrared quartz glass that one piece is blocked port.During use, premixed gas enters into burner body through the import of premixed gas air supply pipe, being worn long after orifice plate, the equal pressure chamber of premixed gas by premixed gas diffuser casing makes premixed gas be evenly distributed through resistance flame shield plates, and then enter in foamed ceramic panel and burn, be flameless combustion during burning, flame is only in foamed ceramic panel combustion.
Due to the effect of resistance flame shield plates, premixed gas can be made to distribute more even, thus make foamed ceramic panel highest face temperature ignition temperature at 1350 ~ 1400 ° of C, and the near-infrared radiation line of high Strong degree can be produced.Therefore, the efficiency of heating surface of the present invention is very high.
2. sufficient combustion:
Because foamed ceramic panel of the present invention also comprises macrocellular foam ceramic wafer and aperture foamed ceramic panel, wherein aperture foamed ceramic panel can play the effect of first preheating, therefore, premixed gas after resistance flame shield plates is evenly distributed enters in aperture foamed ceramic panel again, pre-heat effect can be played in advance to premixed gas, last premixed gas enters into macrocellular foam ceramic wafer combustion, thus it is more abundant that premixed combustion gas is obtained, and combustion product is only water and carbon dioxide.
3. improve the uniformity of heating simultaneously, reduce NO
xdischarge:
Because the present invention can make foamed ceramic panel produce more uniform high temperature, therefore, while the raising efficiency of heating surface, can improve the uniformity of heating, greatly reduce NO
xdischarge, make combustion product be only water and carbon dioxide, simultaneously combustion noise is low, also can be used for the heating process of dangerous gas and atmosphere furnace.
4. can be used for the annealing process needing to ensure furnace atmosphere:
Because the techniques such as stainless steel band bright annealing need to ensure that atmosphere in annealing furnace is not by external influence, to prevent stainless steel band to be oxidized when high-temperature heating, thus reach the effect of light.And the present invention is respectively equipped with inlet channel and outlet passageway due in fire brick layer outside, and outside fire brick layer is also provided with the high temperature resistant infrared quartz glass that one piece has more than 85% high-penetrability.Gentle breeze can be sent in inlet channel mouth pressure fan during burning, gentle breeze is taken out again at outlet passageway mouth high temperature air exhauster, the air pressure air flow of the row's of sending gentle breeze keeps balance, thus the steam that burning can be made to produce and CO 2 waste gas, the outlet passageway through outer fire brick layer is discharged.Therefore, the present invention can be used for as stainless steel band bright annealing etc. needs to ensure the annealing process of furnace atmosphere.
5. can prevent tempering, the security reliability of burner can be ensured:
Because the present invention has installed resistance flame shield plates between perforated plate and foamed ceramic panel, premixed gas current-sharing is delivered to except foamed ceramic panel except ensureing by this resistance flame shield plates, also can stop tempering, can ensure that the structural safety of burner is reliable.
6. during burning, surface temperature is stablized, and radiation efficiency is high:
When the present invention is burnt, capacity is considerably less, and during burning, surface temperature is stablized, and macrocellular foam ceramic wafer highest face temperature ignition temperature can at 1350 ~ 1400 DEG C, and can 800 ~ 1400 DEG C of adjustments; During burning, radiation efficiency is up to 46%, and radiation efficiency is adjustable, and during burning, power adjusting ratio can reach 1:20, and during burning, power density reaches 2500kw/m
2.
7. easy for installation, flexible:
The present invention can arrange arbitrarily according to the shape of outside, square, circular, level, is arranged vertically, and it is easy for installation, flexible, and the low use safety of operating cost, easy to maintenance.
8. control accurately, noise is little, long service life, energy-conserving and environment-protective.
9. applied range:
The present invention can be widely used in following aspect:
(1) surface of the work process: hot water storgae, Degreasing Area Stage 1, degreasing bath, Phosphating Slot etc.; (2) various Industrial Boiler;
(3) heating furnace of various black steel and iron industry, heat-treatment furnace, annealing furnace;
(4) heating furnace of various industrial non-ferrous metals industry, heat-treatment furnace, annealing furnace, changes aluminium stove;
(5) forge furnace, finish cast die framework calcinatory;
(6) glass processing;
(7) textile, glass fibre;
(8) plastic bag product thermoforming, the vulcanization of rubber.
Below, in conjunction with the accompanying drawings and embodiments the technical characteristic of the gas catalysis nonflame near-infrared indirect porous media combustor of the present invention is further described.
Accompanying drawing explanation
Fig. 1: the structural representation of the gas catalysis nonflame near-infrared indirect porous media combustor of the present invention described in embodiment one,
In figure, each label declaration is as follows:
1-premixed gas air supply pipe, 2-premixed gas diffuser casing, pressure strip under 3-, fire brick layer in 4-,
5-heat-insulation layer, 6-inlet channel, 7-fire brick layer, 8-burner body, 9-connects securing member,
10-high-density and high-temperature-resistant alumina fiber mat, the upper pressure strip of 11-, 12-high-density and high-temperature-resistant alumina fiber blanket,
13-is high temperature resistant infrared quartz glass, 14-macrocellular foam ceramic wafer, 15-aperture foamed ceramic panel, 16-adhesive sheet B,
17-adhesive sheet A, 18-hinder flame shield plates, and 19-flexible high-temperature resistant seals bonding clay, the equal pressure chamber of 20-premixed gas, 21-perforated plate, 22-outlet passageway, 23-heat-preservation cotton.
Arrow a in figure is the direction of premixed gas flowing, and arrow b is the direction of air flowing,
Arrow c is the direction of burnt gas flowing, and arrow d is the direction of burnt gas and air mixed flow,
Arrow e is the direction of infrared radiation.
Detailed description of the invention
Embodiment one:
A kind of gas catalysis nonflame near-infrared indirect porous media combustor (see Fig. 1), comprise burner body 8, fire brick layer, described fire brick layer is positioned at burner body 8, described fire brick layer comprises the outer fire brick layer 7, the interior fire brick layer 4 that set gradually from outside to inside, heat-insulation layer 5 is provided with between this outer fire brick layer 7 and interior fire brick layer 4, the outer wall of outer fire brick layer 7 and the inwall of burner body 8 closely cooperate, and are respectively equipped with inlet channel 6 and outlet passageway 22 in outer fire brick layer 7; Premixed gas diffuser casing 2, perforated plate 21, the equal pressure chamber 20 of premixed gas, resistance flame shield plates 18, foamed ceramic panel is disposed with by bottom to top in described interior fire brick layer 4, the bottom of described premixed gas diffuser casing 2 is communicated with premixed gas air supply pipe 1, be provided with heat-preservation cotton 23 between the periphery of premixed gas diffuser casing 2 and interior fire brick layer 4, bonded together by adhesive sheet A17 between resistance flame shield plates 18 and foamed ceramic panel; Be provided with port in the middle part of outer fire brick layer 7 above foamed ceramic panel, the end face of this outer fire brick layer 7 is provided with the high temperature resistant infrared quartz glass 13 that one piece is blocked port; The top of high temperature resistant infrared quartz glass 13 is also provided with pressure strip 11, and the lower surface of burner body 8 is provided with lower pressure strip 3, and this lower pressure strip 3 and upper pressure strip 11 compress link together by being connected securing member 9-screw kit.
Above-mentioned foamed ceramic panel comprises macrocellular foam ceramic wafer 14 and aperture foamed ceramic panel 15, aperture foamed ceramic panel 15 is positioned at the bottom of macrocellular foam ceramic wafer 14, is bonded together between aperture foamed ceramic panel 15 and macrocellular foam ceramic wafer 14 by adhesive sheet B16; Wherein the porosity of macrocellular foam ceramic wafer 14 is 80%, and aperture is 10PPI, and thickness of slab is 10mm; On macrocellular foam ceramic wafer 15, also load has the rare metal catalytic combustion agent with fire-resistant oxidation resistant through high temperature sintering; The material of described macrocellular foam ceramic wafer 15 is: foam silicon carbide ceramics or silicon-carbon-silicon carbide foamed ceramics, or the foamed ceramics to be mixed by carborundum and alundum (Al2O3) bi-material, or the foamed ceramics to be mixed by carborundum and alundum (Al2O3) and silica three kinds of materials, or the foamed ceramics mixed by carborundum and alundum (Al2O3) and zirconia three kinds of materials.This macrocellular foam ceramic wafer can the high temperature of resistance to 1550 DEG C for a long time, and heat-conducting system is high, and thermal shock resistance is excellent.
The porosity of described aperture foamed ceramic panel 15 is 80%, and aperture is 50PPI, and thickness of slab is 5mm; The material of this aperture foamed ceramic panel 15 is alundum (Al2O3) foamed ceramics, or the foamed ceramics mixed by alundum (Al2O3) and zirconia bi-material.This aperture foamed ceramic panel can the high temperature of resistance to 1750 DEG C for a long time, and its heat-conducting system is low, and thermal shock resistance is excellent.
The thickness of described resistance flame shield plates 18 is 5mm, and resistance flame shield plates is evenly arranged the hole that diameter is 0.5mm, and pitch of holes is 3mm; This resistance flame shield plates 18 material is: alundum (Al2O3) porous ceramic film material, or zircite porous ceramic material, or the porous ceramic film material mixed by alundum (Al2O3) and zirconia bi-material.This resistance flame shield plates can the high temperature of resistance to 1850 DEG C for a long time, and heat-conducting system is low, and thermal shock resistance is excellent.
At resistance flame shield plates 18, all seal bonding clay 19 by flexible high-temperature resistant between foamed ceramic panel with interior fire brick layer 4 inwall, between high temperature resistant infrared quartz glass 13 with burner body 8 inwall and be bonded together, this flexible high-temperature resistant seals bonding clay 19 can the high temperature of resistance to more than 1550 DEG C for a long time, and thermal conductivity factor is low.
The plate thickness of described perforated plate 21 is 1mm, perforated plate 21 is evenly arranged the hole that diameter is 0.5mm, and pitch of holes is 3mm, and this perforated plate is high temperature resistant stainless steel plate, can the high temperature of resistance to more than 1150 DEG C for a long time, oxidation resistant.
Described upper pressure strip 11, the material of burner body 8 are high temperature resistant stainless steel plate, and plate thickness is 3mm, can the high temperature of resistance to more than 1250 DEG C for a long time, oxidation resistant.
The refractory brick of described inside and outside fire brick layer is high temperature resistant fire-resistant casting brick, and the material of this refractory brick is diamond spar or zirconia, can the high temperature of resistance to more than 1750 DEG C for a long time, and thermal conductivity factor is low, and hardness is high, and thermal shock resistance is excellent.
Described heat-insulation layer 5 is high density aluminum oxide high-temperature fibre pad, high-density and high-temperature-resistant alumina fiber mat 10 is also provided with between described outer fire brick layer 7 and high temperature resistant infrared quartz glass 13, between high temperature resistant infrared quartz glass 13 and upper pressure strip 11, be provided with high-density and high-temperature-resistant alumina fiber blanket 12, described heat-preservation cotton 23 is alumina fibre heat-preservation cotton.This high density aluminum oxide high-temperature fibre pad, high-density and high-temperature-resistant alumina fiber blanket, alumina fibre heat-preservation cotton all can the high temperature of resistance to more than 1550 DEG C for a long time, and thermal conductivity factor is low.
The present invention is when burning, premixed gas enters into burner body through the import of premixed gas air supply pipe, being worn long after orifice plate, the equal pressure chamber of premixed gas by premixed gas diffuser casing makes premixed gas be evenly distributed through resistance flame shield plates, and then enter in foamed ceramic panel and burn, be flameless combustion during burning, flame is only in foamed ceramic panel combustion.Due to the effect of resistance flame shield plates, premixed gas can be made to distribute more even, thus make foamed ceramic panel produce more uniform high temperature, macrocellular foam ceramic wafer highest face temperature ignition temperature at 1350 ~ 1400 DEG C, and can produce the near-infrared radiation line of higher Strong degree.Simultaneously due on fire brick layer outside, the high temperature resistant infrared quartz glass that one piece has more than 85% high-penetrability is installed, by sending gentle breeze in inlet channel mouth pressure fan, gentle breeze is taken out again at outlet passageway mouth high temperature air exhauster, the air pressure air flow of the row's of sending gentle breeze keeps balance, thus the steam that burning can be made to produce and CO 2 waste gas, the outlet passageway through outer fire brick layer is discharged.
The present invention is smokeless nonflame when burning, energy-efficient, environmental protection, and power adjusting ratio reaches 1:20, and adjustable radiant power, burning gases are: full premixed gas, natural gas, liquefied gas, propane, coal gas, biogas etc.
Embodiment two:
A kind of gas catalysis nonflame near-infrared indirect porous media combustor, the basic structure of this burner is with embodiment one, and institute's difference is: the porosity of described macrocellular foam ceramic wafer 14 is 90%, and aperture is 20PPI, and thickness of slab is 50mm; The porosity of aperture foamed ceramic panel 15 is 90%, and aperture is 65PPI, and thickness of slab is 50mm; The thickness of resistance flame shield plates 18 is 50mm, and resistance flame shield plates is evenly arranged the hole that diameter is 3mm, and pitch of holes is 20mm; The plate thickness of perforated plate 21 is 4mm, perforated plate 21 is evenly arranged the hole that diameter is 3mm, and pitch of holes is 20mm; The plate thickness of upper pressure strip 11, burner body 8 is 8mm.
Embodiment three:
A kind of gas catalysis nonflame near-infrared indirect porous media combustor, the basic structure of this burner is with embodiment one, and institute's difference is: the porosity of described macrocellular foam ceramic wafer 14 is 85%, and aperture is 15PPI, and thickness of slab is 30mm; The porosity of aperture foamed ceramic panel 15 is 85%, and aperture is 60PPI, and thickness of slab is 20mm; The thickness of resistance flame shield plates 18 is 20mm, and resistance flame shield plates is evenly arranged the hole that diameter is 1.5mm, and pitch of holes is 10mm; The plate thickness of perforated plate 21 is 2mm, perforated plate 21 is evenly arranged the hole that diameter is 2mm, and pitch of holes is 10mm; The plate thickness of upper pressure strip 11, burner body 8 is 5mm.
One as above-described embodiment one to three converts, and the porosity of described macrocellular foam ceramic wafer 14 is 80 ~ 90%, and aperture is 10 ~ 20PPI, and thickness of slab is 10 ~ 50mm; The porosity of aperture foamed ceramic panel 15 is 80 ~ 90%, and aperture is 50 ~ 65PPI, and thickness of slab is 5 ~ 50mm; The thickness of resistance flame shield plates 18 is 5 ~ 50mm, and resistance flame shield plates is evenly arranged the hole that diameter is 0.5 ~ 3mm, and pitch of holes is 3 ~ 20mm; The plate thickness of perforated plate 21 is 1 ~ 4mm, perforated plate 21 is evenly arranged the hole that diameter is 0.5 ~ 3mm, and pitch of holes is 3 ~ 20mm; The plate thickness of upper pressure strip 11, burner body 8 is 3 ~ 8mm.
Claims (10)
1. a gas catalysis nonflame near-infrared indirect porous media combustor, comprise burner body (8), heat-insulation layer (5), fire brick layer, described fire brick layer is positioned at burner body (8), it is characterized in that: described fire brick layer comprises the outer fire brick layer (7) set gradually from outside to inside, interior fire brick layer (4), be provided with described heat-insulation layer (5) between this outer fire brick layer (7) and interior fire brick layer (4), in outer fire brick layer (7), be respectively equipped with inlet channel (6) and outlet passageway (22); Premixed gas diffuser casing (2), perforated plate (21), the equal pressure chamber of premixed gas (20), resistance flame shield plates (18), foamed ceramic panel is disposed with by bottom to top in described interior fire brick layer (4), the bottom of described premixed gas diffuser casing (2) is communicated with premixed gas air supply pipe (1), is provided with heat-preservation cotton (23) between the periphery of premixed gas diffuser casing (2) and interior fire brick layer (4); Outer fire brick layer (7) middle part above foamed ceramic panel is provided with port, and the end face of this outer fire brick layer (7) is provided with the high temperature resistant infrared quartz glass (13) that a piece is blocked port; The top of high temperature resistant infrared quartz glass (13) is also provided with pressure strip (11), the lower surface of burner body (8) is provided with lower pressure strip (3), and this lower pressure strip (3) and upper pressure strip (11) compress link together by being connected securing member (9).
2. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 1, is characterized in that: by adhesive sheet A(17 between resistance flame shield plates (18) and foamed ceramic panel) bond together; Described foamed ceramic panel comprises macrocellular foam ceramic wafer (14) and aperture foamed ceramic panel (15), aperture foamed ceramic panel (15) is positioned at the bottom of macrocellular foam ceramic wafer (14), by adhesive sheet B(16 between aperture foamed ceramic panel (15) and macrocellular foam ceramic wafer (14)) bond together.
3. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 2, is characterized in that: the porosity of described macrocellular foam ceramic wafer (14) is 80 ~ 90%, and aperture is 10 ~ 20PPI, and thickness of slab is 10 ~ 50mm; On macrocellular foam ceramic wafer, also load has the rare metal catalytic combustion agent with fire-resistant oxidation resistant through high temperature sintering; The porosity of described aperture foamed ceramic panel (15) is 80 ~ 90%, and aperture is 50 ~ 65PPI, and thickness of slab is 5 ~ 50mm.
4. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 2, it is characterized in that: the material of described macrocellular foam ceramic wafer (14) is: foam silicon carbide ceramics or silicon-carbon-silicon carbide foamed ceramics, or the foamed ceramics to be mixed by carborundum and alundum (Al2O3) bi-material, or the foamed ceramics to be mixed by carborundum and alundum (Al2O3) and silica three kinds of materials, or the foamed ceramics mixed by carborundum and alundum (Al2O3) and zirconia three kinds of materials; The material of described aperture foamed ceramic panel (15) is alundum (Al2O3) foamed ceramics, or the foamed ceramics mixed by alundum (Al2O3) and zirconia bi-material.
5. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 1, it is characterized in that: the thickness of described resistance flame shield plates (18) is 5 ~ 50mm, resistance flame shield plates (18) is evenly arranged the hole that diameter is 0.5 ~ 3mm, and pitch of holes is 3 ~ 20mm.
6. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 1, it is characterized in that: described resistance flame shield plates (18) material is: alundum (Al2O3) porous ceramic film material, or zircite porous ceramic material, or the porous ceramic film material mixed by alundum (Al2O3) and zirconia bi-material.
7. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 1, it is characterized in that: the plate thickness of described perforated plate (21) is 1 ~ 4mm, perforated plate (21) is evenly arranged the hole that diameter is 0.5 ~ 3mm, and pitch of holes is 3 ~ 20mm; The infrared light transmission of described high temperature resistant infrared quartz glass (13) is greater than 85%, and thickness of slab is 5 ~ 10mm.
8. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 1, is characterized in that: the refractory brick of described inside and outside fire brick layer is high temperature resistant fire-resistant casting brick, and the material of this refractory brick is diamond spar or zirconia.
9. gas catalysis nonflame near-infrared indirect porous media combustor according to claim 1, it is characterized in that: described heat-insulation layer (5) is high density aluminum oxide high-temperature fibre pad, high-density and high-temperature-resistant alumina fiber mat (10) is also provided with between described outer fire brick layer (7) and high temperature resistant infrared quartz glass (13), between high temperature resistant infrared quartz glass (13) and upper pressure strip (11), be provided with high-density and high-temperature-resistant alumina fiber blanket (12), described heat-preservation cotton (23) is alumina fibre heat-preservation cotton.
10. the gas catalysis nonflame near-infrared indirect porous media combustor according to the arbitrary claim of claim 1 to 9, is characterized in that: described resistance flame shield plates (18), all seal bonding clay (19) by flexible high-temperature resistant be bonded together between foamed ceramic panel with interior fire brick layer (4) inwall, between high temperature resistant infrared quartz glass (13) with burner body (8) inwall.
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|---|---|---|---|
| CN201510382015.3A CN104964281A (en) | 2015-07-02 | 2015-07-02 | Fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner |
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| CN201510382015.3A CN104964281A (en) | 2015-07-02 | 2015-07-02 | Fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109932489A (en) * | 2019-03-20 | 2019-06-25 | 西安航空学院 | A kind of gas pretreatment device and gas-detecting device with mixed instrument |
| CN112443838A (en) * | 2020-12-11 | 2021-03-05 | 杭州电子科技大学 | Blast air premixing porous medium combustion radiator with secondary air and combustion method thereof |
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