CN207815330U - A kind of low NOx air single regenerative burners of upper and lower combined type - Google Patents
A kind of low NOx air single regenerative burners of upper and lower combined type Download PDFInfo
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- CN207815330U CN207815330U CN201721331121.XU CN201721331121U CN207815330U CN 207815330 U CN207815330 U CN 207815330U CN 201721331121 U CN201721331121 U CN 201721331121U CN 207815330 U CN207815330 U CN 207815330U
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- heat storage
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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
Abstract
A kind of low NOx air single regenerative burners of upper and lower combined type, belong to the single heat accumulating type combustion device technical field on heating furnace and heat-treatment furnace.Including multi-port burner brick, air heat storage tank, heat storage, gas-jet tube；Multi-port burner brick is molded with furnace wall same material castable refractory one-piece casting, is mounted on the front end of air heat storage tank；Heat storage is mounted in air heat storage tank；Gas-jet tube is mounted on air accumulation of heat upper box part or lower part, and air heat storage tank front end puts in furnace wall 150mm, continuously welded with furnace wall steel plate.The advantage is that combustion air can be preheated to 1000 DEG C or more, realizes preheating high efficiente callback, reduce fuel consumption.The utility model uses combustion with meagre oxygen mechanism simultaneously, realizes that fuel " oxygen deprivation " in stove burns, effectively inhibits the generation of NOx in combustion process, the discharge of pollutant is greatly lowered.
Description
Technical field
The utility model belongs to heating furnace and heat-treatment furnace heating gas field of combustion technology, in particular, provides one kind
The low NOx air single regenerative burners of upper and lower combined type.
Background technology
The heat storage tank of conventional air single heat storage type burner is placed in furnace wall, and air, flue gas are easy short circuit, cause heat storage efficiency
It is low, control disorder.The gas pipe of conventional air single heat storage type burner is mounted on burner centre, and gas pipe is completely disposed at high temperature
In environment, operating mode is severe, just needs replacing within general 3~6 months, influences to produce, Operation and Maintenance difficulty is big, costly.It is traditional empty
The burner block of gas single heat storage type burner uses single big spout, causes empty, coal gas that cannot be sufficiently mixed, and empty, coal gas is from spout
The more flue gases of suction cannot be efficiently rolled up during ejection and enter combustion zone dilution combustion air, cannot effectively realize that " oxygen deprivation " is fired
It burns, causes flame kernel temperature high, NOx content is high in flue gas, and environmental protection is not up to standard.The utility model " low NOx of upper and lower combined type
Air single regenerative burner " exactly in this background, innovates a kind of structure novel of development, and combustion process effectively inhibits NOx to give birth to
At.
Invention content
The purpose of this utility model is to provide a kind of low NOx air single regenerative burners of upper and lower combined type, and it is empty to solve tradition
The gas pipe of gas single heat storage type burner is mounted on defect present on the structure of burner centre.Combustion air can be preheated to
It 1000 DEG C or more, realizes that waste heat high efficiente callback utilizes, reduces fuel consumption.The utility model uses combustion with meagre oxygen mechanism simultaneously,
It realizes that fuel " oxygen deprivation " in stove burns, effectively inhibits the generation of NOx in combustion process, the discharge of pollutant is greatly lowered.
When the utility model heats on heating furnace, gas port is under, and air port is upper；Mounted on heating furnace
When lower heating, gas port is in upper, air port under, and during heating, Gas Flow is always close to billet surface, shape for steel billet
At reducing atmosphere, it effectively prevent steel billet " to aoxidize " during heating and " decarburization ", improves heating steel billet quality.
The utility model includes multi-port burner brick 1, air heat storage tank, heat storage 3, gas-jet tube 14；Multi-port burner brick 1 with
The integrated poured molding of furnace wall same material castable refractory is mounted on the front end of air heat storage tank；Heat storage 3 is mounted on air accumulation of heat
In case；Gas-jet tube 14 is mounted on air accumulation of heat upper box part or lower part；Air heat storage tank front end puts in furnace wall 150mm, with furnace wall
Steel plate continuously welds.
Porous type burner block 1 is mounted on the front end of air heat storage tank, and multi-port burner brick 1 uses and furnace wall same material AL2O3≥
The integrated poured forming of 65% Low Cement Castable.1 surrounding of multi-port burner brick is fixed on by anchored brick 13 on furnace wall steel plate, anchoring
Brick 13 and air heat storage tank spacing are in 100-150mm, and anchored brick spacing is between 300-500mm, multi-port burner brick 1 and burner end face
Clog 10~15mm tapetum fibrosums.The integrated poured 120-160mm high-temperature-resistant highs castable of air heat storage tank surrounding, it is porous to ensure
Leakproofness and reliability between burner block 1, air heat storage tank, furnace wall prevent 1 structure of multi-port burner brick unstable, and furnace wall occurs and falls
It collapses phenomenon；Meanwhile preventing the gas leakage of burner surrounding or inhaling cold wind, to improve burner service life.
Shell is made by steel plate in the shell of air heat storage tank, and the liner of babinet is compound using mullite pouring material and fiberboard
Heat insulation structural effectively prevent scattering and disappearing for heat in babinet.Shell is inserted into furnace wall part surrounding and welds anchoring hook, the spacing of anchoring hook
For 100-120mm, burner surrounding stay 120-160mm without insulating layer, the integrated poured 120-160mm high-temperature-resistant highs of shell surrounding
Castable.Inside and outside surrounding is connected burner mounting plate 17 using continuous welding manner with furnace wall steel plate 18, to enhance air heat storage tank
With the leakproofness of furnace wall junction surrounding, prevents burner gas leakage or burn with anger.
Air heat storage tank includes heat storage 3, floater guide block 2, hot junction cavity 21, flase floor 4, installation screw 8, cold end cavity 20 etc.
Part.Cellular heat storage 3 is placed in air heat storage tank, floater guide block 2 is arranged in 3 temperature end of heat storage, covers high-temperature furnace gas pair
The radiant heat of heat storage 3, improves the service life of heat storage 3, and separates heat storage 3 and hot junction cavity 21 by floater guide block 2；Accumulation of heat
Flase floor 4 is arranged in 3 low-temperature end of body, improves heat storage 3 and stacks stability, flase floor 4 is fixed on cold end cavity by installation bolt 8
On 20.
Hot junction cavity 21 is when being in pouring integrated multi-port burner brick 1, formwork moulding by casting, and the end of hot junction cavity 21
Face sets air port 22.Air port 22 and gas port 14 are upper and lower combined type, and air port 22 uses multithread in design
Stock, the size and angle of spout carry out optimized design by the methods of experiment or Computer Numerical Simulation.Air port 22 is set
Porous structure is counted, is arranged according to being arranged at 3 rows 2；Gas port 14 is arranged in air accumulation of heat upper box part or lower part, at independent spray
Mouthful, cooling wind interface is all arranged in gas port, protects gas-jet.
Cold end cavity 20 includes air intake (exhanst gas outlet) 7 and loading hatch 5.20 end set loading hatch 5 of cold end cavity,
To be dismantled to floater guide block 2, heat storage 3, flase floor 4 in installing and usually safeguarding.Loading hatch 5 passes through flange, bolt etc.
On cold end cavity 20.
The utility model has following advantages：
1, air port uses multithread stock, the box-like design of upper and lower alternate group, using " oxygen deprivation " combustion mechanism, air, coal
Gas more traditional single big hole spout during spout sprays, which can be rolled up, inhales furnace gas around more, dilute combustion region sky,
Gas concentration reduces burning velocity, elongates the length of flame, reduces flame kernel regional temperature, and NOx in combustion process is inhibited to generate
Condition realizes high temperature, oxygen deprivation, dispersed combustion, is homogenized temperature field in furnace, reduces blank oxidization burning loss and de- under furnace high-temperature
The discharge of the pernicious gases such as NOx is greatly lowered while improving heating steel billet quality in carbon, has significant economic benefit, society
It can benefit and environmental benefit.
2, the design structure of air heat storage tank and gas port solves gas pipe in conventional monolithic nozzle structure and walks sky
The center of gas heat storage tank, gas pipe are completely disposed in hot environment, the short problem of service life；Solves conventional air list simultaneously
Heat-accumulating burner is empty, coal gas full and uniform cannot mix, and in-furnace temperature gradient is big, cannot meet the problem of heating process requires.
3, multi-port burner brick use with the integrated poured moulding process of furnace wall castable same material refractory material, ensure porous burning
Mouth brick, air heat storage tank, furnace wall castable closely connect, and prevent the gas leakage of burner surrounding or inhale cold wind, improve burner service life.
4, when the utility model heats on heating furnace, gas port is under, and air port is upper；Mounted on heating
When the heat supply of stove lower part, gas port is in upper, air port under, and during heating, Gas Flow is always close to steel billet table for steel billet
Face forms reducing atmosphere, and steel billet is effectively prevent " to aoxidize " during heating and " decarburization ", raising heating steel billet quality.
Description of the drawings
Fig. 1 is the front view of the low NOx air single regenerative burners of upper and lower combined type.Wherein, multi-port burner brick 1, floater guide block 2, storage
Hot body 3, flase floor 4, loading hatch 5, coal gas interface 6, air intake (exhanst gas outlet) 7, installation bolt 8, anchoring hook 9, fiberboard
10, mullite pouring material 11, tapetum fibrosum 12, anchored brick 13, gas port 14, cooling wind casing 15, cooling wind take over 16, burner
Mounting plate 17, furnace wall steel plate 18, air accumulation of heat tank shell 19, cold end cavity 20, hot junction cavity 21, air port 22.
Fig. 2 is the A-A sectional views of the low NOx air single regenerative burners of upper and lower combined type.
Fig. 3 is the B-B sectional views of the low NOx air single regenerative burners of upper and lower combined type.
Fig. 4 is the C direction views of the low NOx air single regenerative burners of upper and lower combined type.
Fig. 5 is the D direction views of the low NOx air single regenerative burners of upper and lower combined type.
Specific implementation mode
Fig. 1-Fig. 5 is a kind of specific implementation mode of the utility model.
The utility model includes multi-port burner brick 1, air heat storage tank, heat storage 3, gas-jet tube 14；Multi-port burner brick 1 with
The integrated poured molding of furnace wall same material castable refractory is mounted on the front end of air heat storage tank；Heat storage 3 is mounted on air accumulation of heat
In case；Gas-jet tube is mounted in air heat storage tank；Air heat storage tank front end puts in furnace wall 150mm, with furnace wall steel plate sequential welding
It connects.
Multi-port burner brick 1 be mounted on air heat storage tank front end, using with furnace wall same material AL2O3>=65% low cement pours
The integrated poured moulding process of material feeding.1 surrounding of multi-port burner brick is fixed on by anchored brick 13 on furnace wall steel plate 18,13 He of anchored brick
The spacing of accumulation of heat tank shell is clogged in ≈ 150mm, 13 spacing of anchored brick between 300-500mm, multi-port burner brick and burner end face
10~15mm tapetum fibrosums 12.The integrated poured ≈ 150mm castable refractories of heat storage tank surrounding, to ensure that multi-port burner brick 1, air store
Leakproofness and reliability between hot tank, furnace wall prevent multi-port burner brick because of structure shakiness, furnace wall occur and collapses phenomenon；Meanwhile
It prevents the gas leakage of burner surrounding or inhales cold wind, to improve burner service life.
Floater guide block 2 uses corundum material, thickness 100mm to be mounted on heat storage tank Inner Front End, for fixing heat storage 3, prevents simultaneously
Only erosion of the furnace high-temperature flue gas to heat storage 3.
Heat storage 3 uses corundum-mullite material, low-temperature zone to use cordierite in high temperature section, is fired as heat-accumulating burner
The storage of heat and release medium during burning.
Flase floor 4 is fixed on air heat storage tank for fixing heat storage 3 using galvanizing flase floor by installation bolt 8
On.
Loading hatch 5 uses square flange Hermetical connecting structure, is used for the replacement and maintenance of heat storage 3.
Coal gas interface 6 uses circule method flange connection structure, takes over the seamless steel control using 1Cr18Ni9Ti stainless steels
Make.
Air intake (exhanst gas outlet) 7 uses circule method flange connection structure, take over material to use Q235-B carbon steel seamless steel pipes
It makes.
Installation bolt 8 is fixed on by the nut of M20 on burner shell using the bolt of M20 × 70.
Anchoring hook 9 is fabricated to Y-shaped using the round steel of φ 6, using 1Cr18Ni9Ti stainless steels, is welded on heat storage tank
Inner walls and heat storage tank put in outside, anchoring hook spacing 100mm, for fixing refractory material in furnace wall steel plate.
Fibrofelt 10 use ceramic fibre material, thickness 50mm, patch accumulation of heat tank shell be laid with, as air heat storage tank every
Thermosphere.
Mullite pouring material 11 is close to the cast of fibrofelt 10, and thickness 100mm is fixed on accumulation of heat tank shell by anchoring hook 9
On 19, the flame retardant coating as air heat storage tank.
Tapetum fibrosum 12 uses tapetum fibrosum containing zircon ceramic, thickness 10-15mm, as accumulation of heat babinet and integral type burner block 1
Sealing surface prevents two kinds of resistance to materials of unlike material because coefficient of thermal expansion difference generates gap, leads to gas blowby.
Anchored brick 13 uses AL2O3=55% three-level high alumina is pre-formed, the drawing that anchored brick 13 passes through anchored brick drag hook
It connects, the integral type burner block 1 integrated poured with furnace wall is fixed on furnace wall steel plate 18.
Gas-jet 14 uses thickness for the thick-wall seamless machine-shaping of 18mm, and material Cr25Ni20 connects with coal gas
Mouth 6 is using threaded connection.Gas port 14 is arranged in air accumulation of heat upper box part or lower part, and cooling wind spray is all arranged in gas port
Mouthful, protect gas port.
Cooling wind casing 15 is made of wall thickness 4mm seamless steel pipes, using Q235-B carbon steel materials, is existed with coal gas interface 6
Close joint connection structure is used at flange arrangement, forms the partition cooling space of 5mm between casing, is continuously blown by cooling take over 6
Enter cold air, cooling coal gas interface 6 and gas-jet 14, prevents from being baked by furnace high-temperature flue gas bad；
Cooling wind take over 16 is made of the welded pipe of Φ 32 × 4, using Q235-B carbon steel materials, is welded on cooling windband
15 arrival end of pipe.
Burner mounting plate 17 is made of the thick steel sheet of thickness 12mm, using Q235-B carbon steel materials, with furnace wall steel plate
Using continuous closed welding structure between 18 and accumulation of heat tank shell 19.
Furnace wall steel plate 18 is made of the steel plate of thickness 6mm, using Q235-B carbon steel materials, for installing fixed heat storage tank
With furnace wall refractory material.
Accumulation of heat tank shell 19 is welded into box structure using the steel plate of thickness 6mm, wherein outside furnace wall steel plate 18
Part use Q235-B carbon steel materials, the part in furnace wall steel plate 18 is using 1Cr18Ni9Ti making.
Cold end cavity 20 is mainly formed by steel plate and steel pipe manufacturing, using Q235-B carbon steel materials, end set handling
Mouth 5, in installation and daily maintenance, to be dismantled to floater guide block 2, heat storage 5, flase floor 4.Loading hatch 5 passes through flange, spiral shell
Bolt etc. is mounted on cold end cavity 20.
Hot junction cavity 21 is when being in pouring integrated multi-port burner brick, formwork moulding by casting.Cold air is pre- through heat storage 3
After heat, temperature reaches 1000 DEG C, and 4-5 times of rapid spatial expansion, hot-air passes through under flow velocity after the entrance hot junction cavity 21 of floater guide block 2
Drop, gas dynamic pressure change into static pressure, and when hot-air is sprayed by porous air spout 22, air-flow is more uniform, with gas port 23
The Gas Flow stock of ejection mixes more preferable, and the furnace gas for rolling up suction is more, and stable, uniform " oxygen deprivation " combustion atmosphere is formed in stove,
Stablize the generation for effectively inhibiting NOx in combustion process, in-furnace temperature temperature field is more uniform, is more conducive to and improves adding for steel billet
Thermal mass and the discharge for reducing pollutant, hot junction cavity 21 play the role of voltage stabilizing and steady jet stream.
Air port 22 designs porous structure, 3 row, 2 array column arrangement is designed to, in the porous burning of pouring integrated
When mouth brick, using formwork moulding by casting.Use multithread stock in the design of air port 22, the size and angle of spout by experiment or
The methods of Computer Numerical Simulation carries out optimized design.
Claims (1)
1. a kind of low NOx air single regenerative burners of upper and lower combined type, which is characterized in that stored including multi-port burner brick (1), air
Hot tank, heat storage (3), gas-jet tube (14)；Multi-port burner brick (1) is mounted on the front end of air heat storage tank；Heat storage (3) is installed
In air heat storage tank；Gas-jet tube is mounted in air heat storage tank；Air heat storage tank front end puts in furnace wall 150mm, with furnace wall
Steel plate continuously welds；
Multi-port burner brick (1) surrounding is fixed on by anchored brick (13) on furnace wall steel plate, between anchored brick (13) and air heat storage tank
Away from 100-150mm, anchored brick spacing clogs 10~15mm fibers between 300-500mm, multi-port burner brick (1) and burner end face
Blanket；The integrated poured 120-160mm high-temperature-resistant highs castable of air heat storage tank surrounding；
Air heat storage tank includes heat storage (3), floater guide block (2), hot junction cavity (21), flase floor (4), installation screw (8), cold end sky
Chamber (20)；Cellular heat storage (3) is placed in air heat storage tank, heat storage (3) temperature end is arranged floater guide block (2), passes through gear
Brick (2) separates heat storage (3) and hot junction cavity (21)；Flase floor (4) is arranged in heat storage (3) low-temperature end, and flase floor (4) passes through peace
Dress bolt (8) is fixed on cold end cavity (20)；
Shell is made by steel plate in the shell of air heat storage tank, and the liner of babinet uses mullite pouring material and fiberboard compound heat-insulation
Structure；Shell is inserted into furnace wall part surrounding and welds anchoring hook, and the spacing of anchoring hook is 100-120mm, and burner surrounding stays 120-
160mm without insulating layer, the integrated poured 120-160mm high-temperature-resistant highs castable of shell surrounding；Burner mounting plate (17) and stove
Inside and outside surrounding is connected wall steel plate (18) using continuous welding manner；
The end face of hot junction cavity (21) sets air port (22)；Air port (22) and gas port (14) are upper and lower combined type,
Air port (22) designs porous structure form, arranges according to being arranged at 3 rows 2；Gas port (14) is arranged on air heat storage tank
Cooling wind interface is arranged in portion or lower part, gas port；
Cold end cavity (20) includes air intake or exhanst gas outlet (7) and loading hatch (5)；Cold end cavity (20) end set is loaded and unloaded
Mouth (5), loading hatch (5) are mounted on by flange, bolt on cold end cavity (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721331121.XU CN207815330U (en) | 2017-10-14 | 2017-10-14 | A kind of low NOx air single regenerative burners of upper and lower combined type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721331121.XU CN207815330U (en) | 2017-10-14 | 2017-10-14 | A kind of low NOx air single regenerative burners of upper and lower combined type |
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| Publication Number | Publication Date |
|---|---|
| CN207815330U true CN207815330U (en) | 2018-09-04 |
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| CN201721331121.XU Active CN207815330U (en) | 2017-10-14 | 2017-10-14 | A kind of low NOx air single regenerative burners of upper and lower combined type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520719A (en) * | 2020-05-11 | 2020-08-11 | 北京君合悦科技发展有限公司 | Natural gas single heat storage burner |
-
2017
- 2017-10-14 CN CN201721331121.XU patent/CN207815330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520719A (en) * | 2020-05-11 | 2020-08-11 | 北京君合悦科技发展有限公司 | Natural gas single heat storage burner |
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