CN109579009A - The burner apparatus of low-nitrogen oxide discharging - Google Patents
The burner apparatus of low-nitrogen oxide discharging Download PDFInfo
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- CN109579009A CN109579009A CN201910038374.5A CN201910038374A CN109579009A CN 109579009 A CN109579009 A CN 109579009A CN 201910038374 A CN201910038374 A CN 201910038374A CN 109579009 A CN109579009 A CN 109579009A
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- air hose
- combustion
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000007599 discharging Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 49
- 238000002485 combustion reaction Methods 0.000 claims abstract description 44
- 239000003546 flue gas Substances 0.000 claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000446 fuel Substances 0.000 claims abstract description 30
- 239000000567 combustion gas Substances 0.000 claims abstract description 29
- 230000001535 kindling effect Effects 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 8
- 239000003517 fume Substances 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000008844 regulatory mechanism Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- 238000010348 incorporation Methods 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002341 toxic gas 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
-
- 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)
Abstract
The present invention relates to a kind of burner apparatus of low-nitrogen oxide discharging.It is equipped with tubulose fuel chamber inside air hose, passes through combustion gas demarcation plate and gas jet orifice composition multi-cavity premixer structure on fuel chamber's external cylindrical surface；It is equipped with central air hose inside air hose, combustion gas is provided on central air hose periphery and enters hole, central air hose one end connects kindling material blower, and the other end is equipped with kindling material combustion head；Air hose front end is equipped with secondary mixing device, the underbalance effect formed by air hose front end high speed, high temperature gas flow, via the partial fume in the furnace chamber air inlet circuit sucking burner hearth of secondary mixing device；Air hose connects main air blower, and main air blower connects air inlet duct, and flue gas introducing chamber is equipped with inside air inlet duct and air introduces chamber, air introduces chamber lower part and is equipped with two-stage air door, adjusts the air and exhaust gas volumn ratio into main air blower by two-stage air door.The present invention is based on two premixs, two incorporations, two air distributions, two to adjust, a Stability Design structure, realizes super low nitrogen burning.
Description
Technical field
The present invention relates to gaseous fuel burners matched with thermal hardware, the combustions of specifically a kind of low-nitrogen oxide discharging
Burner device.
Background technique
Gas burner is widely used in national economy every field, right as domestic natural gas resource usage is continuously increased
Noxious gas emission control is increasingly stringenter, and natural gas extensive Substitute coal, fuel oil become main clean energy resource.No
Only in this way, country fires the requirement of blue sky defended war, the harmful components such as the nitrogen oxides in effluent of burner discharge are proposed
It is strict with, has been increased in areas such as Jing-jin-ji regions lower than 30mg/m3Ultralow nitric oxide emission levels.Compared to state before
150mg/m as defined in family's standard3, have and increase substantially, reached highest standard as defined in some developed countries of our times.
This is not only sternly required to using the user of burner to propose high standard, also proposes challenge to burner exploitation manufacturing technology.
Domestic super low NO relies primarily on import at present, and price is significantly higher than normal burner.State's inner burner system
It makes enterprise and grasps ultralow nitrogen Burner Technology well not yet, lack technology maturation product really up to the mark.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of burner apparatus of low-nitrogen oxide discharging, realize ultralow nitrogen
Burning.
The technical solution used to solve the technical problems of the present invention is that:
A kind of burner apparatus of low-nitrogen oxide discharging, including fuel chamber, air hose, main air blower, air inlet duct, igniter, wind
Pipe air intake vent connects the air outlet of main air blower, and the side of main air blower shell connects air inlet duct, by air duct demarcation plate inside air inlet duct
Air inlet duct is divided into two chambers, respectively flue gas introduces chamber and air introduces chamber, and flue gas introduces chamber and sets with air inlet duct lateral surface
The gas inlet connection set；
The fuel chamber of tubulose is equipped with inside air hose, the external cylindrical surface of fuel chamber is equipped with multiple elongated combustions of radial arrangement
Annular housing between fuel chamber and air hose is divided into the premix of multiple volume very littles by gas demarcation plate, multiple combustion gas demarcation plates
Chamber；It is uniformly provided with the gas jet orifice of minor diameter on the cylindrical surface of fuel chamber, combustion gas is sprayed by adjacent two panels by gas jet orifice
It among combustion gas demarcation plate, uniformly mixes with the air into air hose, flue gas premixed flow, is sprayed from air hose end；
Central air hose is equipped with inside air hose, central air hose runs through the fuel chamber of tubulose, is provided with multiple combustions on central air hose periphery
Gas enters hole, and the indoor combustion gas of combustion gas is introduced central air hose, and central air hose one end connects kindling material blower, and kindling material blower is by combustion-supporting sky
Pneumatic transmission enters central air hose, sufficiently premixes with the combustion gas for entering central air hose；The central air hose other end is equipped with stable flame pan and end face is kept off
Plate, end face baffle and stable flame pan constitute independent kindling material combustion head；
Air hose front end is equipped with secondary mixing device, and secondary mixing device is venturi tube structure, and secondary mixing device passes through its text
Venturi structure and the tapered sleeve structure of air hose front end form a furnace chamber air inlet circuit, pass through air hose front end high speed, high temperature gas flow
The underbalance effect of formation, via the partial fume in furnace chamber air inlet circuit sucking burner hearth；
Air introduces chamber lower part and is equipped with two-stage air door, and level-one air door is located at the top of gas inlet, and level-one airdoor control enters master
The total amount of combustion air and flue gas in blower；Secondary air-valve is located at air and introduces the combustion air inlet portion of chamber and draw in flue gas
Entering the lower part of chamber, secondary air-valve controls combustion air inlet and opens size, the intracorporal vacuum magnitude of chamber between two-stage air door is adjusted,
Change the suction force for introducing chamber to flue gas, and then adjusts the ratio of the air and exhaust gas volumn that enter main air blower.
The present invention by adopting the above technical scheme is bright, and compared with prior art, beneficial effect is:
(1) inside air hose, by combustion gas, combustion air, flue gas annular premix chamber, be divided at least tens small volume premix
Chamber.The sufficiently small chamber of volume can ensure in burner underrun, the slow situation of mixed gas flow velocity, mix
Gas will not occur in premix chamber tempering dodge it is quick-fried, such multi-cavity premixer structure ensure that the safety of premixed combustion, eliminate
The quick-fried risk of sudden strain of a muscle, guarantees that big heat load adjustment ratio may be implemented in burner.Meanwhile multi-cavity premixer structure can realize combustion gas,
Air and the full and uniform mixing of flue gas.
(2) in air hose front end, burner leading portion is designed to by secondary mixing device using the principle of Venturi tube
Venturi type mixes public attention, the underbalance effect formed using swiftly flowing high temperature gas flow, and the flue gas in burner hearth is sucked combustion head,
Secondary blending is carried out with air, combustion gas, further decreases ignition temperature and burning velocity, and then the nitrogen that burning generates is effectively reduced
Oxide concentration.
(3) independently operated center kindling material is set up at air hose center, combustion air is supplied with independent small blower, using pre-
Mixed combustion system, air are sufficiently premixed with fuel gas in kindling material burner, are then ignited.The steady flame of kindling material burner front end
Device ensure that kindling material flame firm stable, not blown out, it is ensured that its main flame that ignites at any time guarantees that main flame will not be because of
Incorporation exhaust gas volumn is big and extinguishes.
(4) using the two-stage air door in-line configuration of original creation, combustion air may be implemented and mix the orderly adjusting of exhaust gas volumn,
The adjusting of air flue gas is become easier to, guarantees that burning is steady, avoids leading to combustion instability or flame-out because adjustment is improper.And
And can guarantee in combustion there is the flue gas of sufficient amount to mix always, realize low nitrogen burning, cigarette will not be cut off because of human factor
Gas supply leads to that low nitrogen burning is not implemented.
According to the burner that above-mentioned technical proposal of the present invention manufactures and designs, after tested, nitrogen oxides in effluent concentration can
Drop to 30mg/m3Within level, reach ultralow discharged nitrous oxides standard.
Further, the preferred solution of the invention is:
Inside air hose, igniter of the premix chamber rear portion equipped with burner starting ignition.
One end of level-one axle of the air door is equipped with rocker arm, and rocker arm is connected by first connecting rod with ratio regulation mechanism, ratio tune
Section mechanism is adjustable cam mechanism, and the rocker arm of adjustable cam mechanism is connect with connecting rod；One end of light breeze door-hinge and auxiliary servo
Motor connection；The crank of ratio regulation mechanism is connect by second connecting rod with Gas fuel butterfly valve, and Gas fuel butterfly valve is connect with solenoid valve block,
The axis connection of cam shaft and main servo motor；Main servo motor and auxiliary servo motor are electrically connected with electric cabinet.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of first embodiment of the invention；
Fig. 2 is A-A direction view in Fig. 1；
Fig. 3 is B-B direction view in Fig. 1；
Fig. 4 is the structural schematic diagram of second embodiment of the invention；
In figure: 1. 2 mixing devices；2. air hose；3. combustion gas demarcation plate；4. igniter；5. Gas fuel butterfly valve；6. solenoid valve
Group；7. ratio regulation mechanism；8. electric cabinet；9. auxiliary servo motor；10. air inlet duct；11. rocker arm；12. connecting rod；13. kindling material wind
Machine；14. main air blower；15. central air hose；16. gas jet orifice；17. combustion gas enters hole；18. fuel chamber；19. stable flame pan；20. end face
Baffle；21. furnace chamber air inlet circuit；22. premix chamber；23. air duct demarcation plate；24. gas inlet；25. level-one air door；26. second level
Air door；27. main servo motor；28. gas pipeline.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and embodiments.
First embodiment is the combustion of the low-nitrogen oxide discharging for the integral structure that main air blower 14 and air hose 2 are directly connected to
Burner device.
Referring to Fig. 1, Fig. 2, Fig. 3, the fuel chamber 18 of tubulose is equipped with inside air hose 2, and tubular structure is the tubulose knot of variable diameter
Structure, leading portion caliber is thick, and back segment caliber is thin, and back segment pipe connects gas pipeline 28.On the external cylindrical surface of the extra heavy pipe diameter section of fuel chamber 18
At least tens elongated combustion gas demarcation plates 3 equipped with radial arrangement, multiple combustion gas demarcation plates 3 are by fuel chamber 18 and air hose
Annular housing between 2 is divided into the premix chamber 22 of multiple volume very littles, uniformly opens on the cylindrical surface starting point of extra heavy pipe diameter section
Gas jet orifice 16 equipped with minor diameter, to form Multicarity premixer structure inside air hose 2.Gas jet orifice 16 is by gas injection
Enter among adjacent two panels combustion gas demarcation plate 3, the air that enters with 2 right end of air hose, flue gas premixed flow after evenly mixing, then from wind
2 left end of pipe sprays.Plate or corrugated plating can be used in combustion gas demarcation plate 3, and corrugated plating can strengthen premixing effect.
It is equipped with central air hose 15 along central axis inside air hose 2, central air hose 15 runs through the fuel chamber 18 of tubulose, centre wind
It is provided with multiple combustion gas on the periphery of pipe 15 and enters hole 17, the combustion gas in fuel chamber 18 is introduced into central air hose 15, central air hose 15
One end connects kindling material blower 13, and combustion air is sent into central air hose 15 by kindling material blower 13, with the combustion gas for entering central air hose 15
Sufficiently premix；15 other end of central air hose is equipped with stable flame pan 19 and end face baffle 20, and end face baffle 20 and stable flame pan 19 constitute one
A independent kindling material combustion head can be partially formed a firm kindling material, and be maintained flame stablizes burning.
The front end of air hose 2 is equipped with secondary mixing device 1, and secondary mixing device 1 is venturi tube structure, passes through its venturi
Pipe structure and the tapered sleeve structure of 2 front end of air hose form a furnace chamber air inlet circuit 21.The premix sprayed through Multicarity premixed device can
Combustion gas body end burning, flame and high-temperature gas before stable flame pan 19 are quickly sprayed via the necking segment of Venturi tube, generate negative pressure
Effect sucks the partial fume in burner hearth via furnace chamber air inlet circuit 21, blends, further decreases with flame, fuel gas
Burning velocity and ignition temperature.
The air intake vent of air hose 2 connects the air outlet of main air blower 14, is equipped with impeller inside main air blower 14, impeller is mounted directly
In the shaft of driving motor, the side of 14 shell of main air blower connects air inlet duct 10, by air duct demarcation plate 23 inside air inlet duct 10
Air inlet duct 10 is divided into two chambers, respectively flue gas introduces chamber and air introduces chamber, and flue gas introduces 10 outside of chamber and air inlet duct
The gas inlet 23 of face setting is connected to；Air introduces chamber lower part and is equipped with two-stage air door, and level-one air door 25 is located at gas inlet 24
Top, the control of level-one air door 25 enter the total amount of combustion air and flue gas in main air blower 14；Secondary air-valve 26 draws positioned at air
Entering the combustion air inlet portion of chamber and introduces the lower part of chamber in flue gas, secondary air-valve 26 controls combustion air inlet and opens size,
The intracorporal vacuum magnitude of chamber between two-stage air door is adjusted, changes the suction force for introducing chamber to flue gas, and then adjust and enter main air blower
14 air and the ratio of exhaust gas volumn.The auxiliary adjustment to coefficient of excess air can also be realized simultaneously.
In the present embodiment, one end of 25 axis of level-one air door is equipped with rocker arm 11, and rocker arm 11 passes through first connecting rod 12 and ratio
Regulating mechanism 7 is connected, and ratio regulation mechanism 7 is adjustable cam mechanism, and the rocker arm of adjustable cam mechanism is connect with connecting rod 12；Second level
One end of 26 axis of air door is connect with auxiliary servo motor 9；The crank of ratio regulation mechanism 7 passes through second connecting rod and Gas fuel butterfly valve 5
Connection, Gas fuel butterfly valve 5 are connect with solenoid valve block 6, the axis connection of cam shaft and main servo motor 27；Main servo motor 27 and auxiliary
It helps servo motor 9 to be electrically connected with electric cabinet 8, realizes the automatic adjustment of two-stage air door.
In the present embodiment, inside air hose 2,22 rear portion of premix chamber setting igniter 4, it to be used for burner starting ignition.
Second embodiment is the low NOx for the split type structure that main air blower 14 is connect by one section of air duct with air hose 2
The burner apparatus of discharge.As shown in figure 4, level-one air door 25 is located at the outlet of main air blower 14, secondary air-valve 26 is located at main air blower 14
On the gas inlet 24 of 10 side of air inlet duct.
The burner apparatus of this low-nitrogen oxide discharging described in above two embodiment, designing points may be summarized to be
" two premixs, two incorporations, two air distributions, two adjustings, one stablize ", in which:
1, two premix:
(1) main flame uses premixed combustion mode, i.e., by combustion air and the abundant premix of main fuel gas before burning.It is made
With: first is that substantially eliminating " quick nitrogen oxides " production quantity by sufficient oxygen supply burning；Second is that incorporation is big in mixing combustion gas
Flue gas is measured, causes burning velocity to reduce, under the significantly reduced unfavorable conditions of flame temperature, can be kept using premixed combustion mode
Stablize burning, for the generation of reduction " hot nitrogen oxide ", creates favorable conditions.
(2) independently operated kindling material is used, and the kindling material also uses premixed combustion mode, specifically uses independent float
It measures blower and is independently supplied air to kindling material burner, air is sufficiently premixed with fuel gas in kindling material burner, is then ignited.
The effect of independent kindling material is, when main flame because mixing a large amount of flue gases, when leading to combustion instability, having extinguishing risk, by steady
Solid kindling material flame light main flame always, guarantee main flame will not because of incorporation the big extinguishing of exhaust gas volumn.Before kindling material burner
End is equipped with steady flame device, guarantees that kindling material flame is not blown out by the flue gas in main flame.
It is long can significantly to be shortened compared in such a way that fractional combustion reduces nitrogen oxides using premixed combustion mode for flame
Degree, and can keep trouble-free burning under lower flame temperature, flame stabilization and short, reduce the requirement to size of burner hearth.
And premixed combustion mode has been significantly reduced the generation concentration of " quick nitrogen oxides ".
2, two incorporation:
(1) mix flue gas from combustor external: burner by gas fuel burning, the flue of the high-temperature flue gas of generation and boiler,
After the heat exchange of the heat exchange elements such as smoke pipe, the low-temperature flue gas of generation is drawn from boiler, air inlet of the part of smoke from burner main air blower
Mouth sucking burner, sufficiently mixes with combustion air, fuel gas, is then ignited burning.The main component of flue gas is dioxy
Change carbon, vapor and nitrogen, is the inert gas for preventing burning, burning velocity can be substantially reduced, reduce flame temperature.Therefore
The generation that " hot nitrogen oxide " can be significantly inhibited becomes the major measure for reducing nitrogen oxides in effluent concentration.
(2) the secondary incorporation of nitrogen oxides is carried out in the burner hearth of boiler: also not due to the external flue gas for mixing burner
It is enough the concentration of nitrogen oxides being down to 30mg/m3Ultralow level of nitrogen oxides, it is also necessary to using secondary incorporation cigarette in boiler
The drop nitrogen oxides measure of gas.By being located at the channel of burner front, generated using the high-speed flow of burner internal negative
Effect is pressed, the hot stove gas containing high concentration imperfect combustion product in burner hearth is introduced into and is blended into combustion air, further
Burning velocity and flame temperature are reduced, " hot nitrogen oxide " production quantity can be not only reduced, it is raw can also to reduce " quick nitrogen oxides "
Cheng Liang.
The blending of two-stage flue gas realizes the significantly inhibition to ignition temperature, burning velocity, realizes super low concentration nitrogen oxygen
Compound burning.Mode is blended using two-stage flue gas is mixed in outer mixing, is successively mixed, that is, increases flue gas incorporation total amount, and guarantee
Flame holding.Blending mode, not will lead to the raising of burner hearth back pressure also, advantageously reduces blower power consumption in simultaneously.
3, two air distribution:
(1) it uses main air blower to provide combustion air for the main flame of burner, guarantees the full combustion of main flame.
(2) kindling material air distribution uses independent small blower to provide combustion air for center kindling material, guarantees the robust combustion of kindling material.
4, it two adjusts:
(1) gas flow for entering draught fan impeller import is adjusted using level-one air door.
(2) ratio that the combustion air entered in blower air inlet duct and external incorporation flue gas are adjusted using secondary air-valve, is led to
The cooperation adjusting for crossing level-one, secondary air-valve, had not only guaranteed that nitrous oxides concentration was up to standard in combustion product, but also guarantee oxygen content in flue gas
It is not exceeded, it realizes heating equipment while reaching energy conservation and environmentally friendly dual indexes.
5, one stablizes:
In order to realize that burner reaches ultralow discharged nitrous oxides standard, the measure that needs to mix by two-stage is to burning premix
The flue gas of sufficient amount is mixed in gas, flue gas category inert gas will lead to slack-off burning velocity, combustion instability, be easy to stop working,
The flue gas being added simultaneously will increase flame flow velocity, lead to flame lifting, it is therefore desirable to center kindling material be stablized using steady flame device
Firmly, it is ensured that flame trouble-free burning is not blown out.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than limiting the scope of the invention, although
The present invention is explained in detail referring to the present embodiment, it will be understood by those of skill in the art that can be to technology of the invention
Scheme is modified or replaced equivalently, without departing from the spirit and scope of technical solution of the present invention.
Claims (3)
1. a kind of burner apparatus of low-nitrogen oxide discharging, including fuel chamber (18), air hose (2), main air blower (14), air inlet duct
(10), igniter (4), air hose (2) air intake vent connect the air outlet of main air blower (14), the side connection of main air blower (14) shell
Air inlet duct (10), air inlet duct (10) is internal to be divided into two chambers, respectively flue gas for air inlet duct (10) by air duct demarcation plate (23)
It introduces chamber and air introduces chamber, flue gas introduces chamber and is connected to the gas inlet (24) that air inlet duct (10) lateral surface is arranged；Its feature
It is:
The fuel chamber (18) of tubulose is equipped with inside air hose (2), the external cylindrical surface of fuel chamber (18) is equipped with radial arrangement
Multiple elongated combustion gas demarcation plates (3), multiple combustion gas demarcation plates (3) are by the annular housing between fuel chamber (18) and air hose (2)
It is divided into the premix chamber (22) of multiple volume very littles；The gas jet orifice of minor diameter is uniformly provided on the cylindrical surface of fuel chamber (18)
(16), combustion gas sprays into adjacent two panels combustion gas demarcation plate (3) is intermediate by gas jet orifice (16), with enter air hose (2) air,
Flue gas premixed flow uniformly mixes, and sprays from air hose (2) end；
Central air hose (15) are equipped with inside air hose (2), central air hose (15) runs through the fuel chamber (18) of tubulose, central air hose (15)
It is provided with multiple combustion gas on periphery and enters hole (17), the combustion gas in fuel chamber (18) is introduced into central air hose (15), central air hose
(15) one end connection kindling material blower (13), kindling material blower (13) by combustion air be sent into central air hose (15), with enter centre wind
The combustion gas of pipe (15) sufficiently premixes；Central air hose (15) other end is equipped with stable flame pan (19) and end face baffle (20), end face baffle
(20) independent kindling material combustion head is constituted with stable flame pan (19)；
Air hose (2) front end is equipped with secondary mixing device (1), and secondary mixing device (1) is venturi tube structure, secondary mixing device
(1) a furnace chamber air inlet circuit (21) is formed by the tapered sleeve structure of its venturi tube structure and air hose (2) front end, passes through air hose
(2) underbalance effect that front end high speed, high temperature gas flow are formed, via the partial fume in furnace chamber air inlet circuit (21) sucking burner hearth；
Air introduces chamber lower part and is equipped with two-stage air door, and level-one air door (25) is located at the top of gas inlet (24), level-one air door
(25) control enters the total amount of combustion air and flue gas in main air blower (14)；Secondary air-valve (26) is located at air and introduces helping for chamber
It fires air inlet part and introduces the lower part of chamber in flue gas, secondary air-valve (26) controls combustion air inlet and opens size, adjusts two
The intracorporal vacuum magnitude of chamber between grade air door changes the suction force for introducing chamber to flue gas, and then adjusts and enter main air blower (14)
The ratio of air and exhaust gas volumn.
2. the burner apparatus of low-nitrogen oxide discharging according to claim 1, it is characterised in that: inside air hose (2),
Premix chamber (22) rear portion is equipped with the igniter (4) of burner starting ignition.
3. the burner apparatus of low-nitrogen oxide discharging according to claim 1, it is characterised in that: level-one air door (25) axis
One end be equipped with rocker arm (11), rocker arm (11) is connected by first connecting rod (12) with ratio regulation mechanism (7), proportion adjustment machine
Structure (7) is adjustable cam mechanism, and the rocker arm of adjustable cam mechanism is connect with connecting rod (12)；One end of secondary air-valve (26) axis with it is auxiliary
Servo motor (9) are helped to connect；The crank of ratio regulation mechanism (7) is connect by second connecting rod with Gas fuel butterfly valve (5), Gas fuel butterfly valve
(5) it is connect with solenoid valve block (6), the axis connection of cam shaft and main servo motor (27)；Main servo motor (27) and auxiliary are watched
Motor (9) is taken to be electrically connected with electric cabinet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038374.5A CN109579009B (en) | 2019-01-16 | 2019-01-16 | Burner device with low nitrogen oxide emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038374.5A CN109579009B (en) | 2019-01-16 | 2019-01-16 | Burner device with low nitrogen oxide emission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109579009A true CN109579009A (en) | 2019-04-05 |
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| CN110469847A (en) * | 2019-09-11 | 2019-11-19 | 江阴德尔热能机械有限公司 | A kind of ultralow nitrogen combustion apparatus of water-cooled combustion gas |
| CN110805897A (en) * | 2019-10-31 | 2020-02-18 | 浙江百特燃烧器有限公司 | Flue gas backward flow formula combustor |
| CN111442267A (en) * | 2020-05-13 | 2020-07-24 | 广东省特种设备检测研究院顺德检测院 | Low-nitrogen energy-saving gas boiler |
| CN111853781A (en) * | 2020-08-28 | 2020-10-30 | 河北斯丹德尔环保科技有限公司 | Burner with composite multilayer flame |
| CN112146091A (en) * | 2020-10-23 | 2020-12-29 | 广东意高能源科技股份有限公司 | Compact mixes formula ultralow nitrogen combustion device in advance |
| CN112344328A (en) * | 2020-10-23 | 2021-02-09 | 郴州华峰能源科技有限公司 | Negative pressure nozzle |
| CN113606575A (en) * | 2021-08-24 | 2021-11-05 | 郑州釜鼎热能技术有限公司 | Corrugated plate separated low-nitrogen burner with air and gas channels uniformly mixed in same direction and at intervals |
| CN114034063A (en) * | 2021-09-28 | 2022-02-11 | 江门市禾泰科技有限公司 | A blast air assembly module for gas-cooker |
| CN114963171A (en) * | 2021-12-24 | 2022-08-30 | 裕富宝厨具设备（深圳）有限公司 | Energy-saving premixing type combustor |
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| CN111853781A (en) * | 2020-08-28 | 2020-10-30 | 河北斯丹德尔环保科技有限公司 | Burner with composite multilayer flame |
| CN112146091A (en) * | 2020-10-23 | 2020-12-29 | 广东意高能源科技股份有限公司 | Compact mixes formula ultralow nitrogen combustion device in advance |
| CN112344328A (en) * | 2020-10-23 | 2021-02-09 | 郴州华峰能源科技有限公司 | Negative pressure nozzle |
| CN113606575A (en) * | 2021-08-24 | 2021-11-05 | 郑州釜鼎热能技术有限公司 | Corrugated plate separated low-nitrogen burner with air and gas channels uniformly mixed in same direction and at intervals |
| CN114034063A (en) * | 2021-09-28 | 2022-02-11 | 江门市禾泰科技有限公司 | A blast air assembly module for gas-cooker |
| CN114963171A (en) * | 2021-12-24 | 2022-08-30 | 裕富宝厨具设备（深圳）有限公司 | Energy-saving premixing type combustor |
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