CN110469848A - A kind of ultralow nitrogen combustion apparatus of flue gas recirculation - Google Patents
A kind of ultralow nitrogen combustion apparatus of flue gas recirculation Download PDFInfo
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- CN110469848A CN110469848A CN201910856512.0A CN201910856512A CN110469848A CN 110469848 A CN110469848 A CN 110469848A CN 201910856512 A CN201910856512 A CN 201910856512A CN 110469848 A CN110469848 A CN 110469848A
- Authority
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- China
- Prior art keywords
- gas
- flue gas
- pipe
- shell
- circulating flue
- Prior art date
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 239000003546 flue gas Substances 0.000 title claims abstract description 97
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 35
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 83
- 239000002737 fuel gas Substances 0.000 claims abstract description 47
- 239000000567 combustion gas Substances 0.000 claims abstract description 32
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 27
- 230000008676 import Effects 0.000 claims abstract description 11
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 19
- 239000002440 industrial waste Substances 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 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
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- 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 provides a kind of ultralow nitrogen combustion apparatus of flue gas recirculation, fuel gas in industrial waste gas can be carried out low nitrogen oxide burning by it, the heat of generation is effectively utilized, including shell and flame tube, fuel gas inlet is provided on shell, circulating flue gas import, air intlet, fuel gas conduit is set in shell, circulating flue gas pipe, the outside of circulating flue gas pipe is arranged in fuel gas conduit, blast tube is constituted between fuel gas conduit and circulating flue gas pipe, the inner chamber body of circulating flue gas pipe constitutes exhaust gases passes, shell, cavity between flame tube and fuel gas conduit constitutes air duct, fuel gas conduit forms combustion gas cavity in end and is connected with interior exhaust gas nozzle, circulating flue gas pipe forms flue gas chamber in end and is connected with foreign cigarette gas blowout pipe, interior exhaust gas nozzle is arranged in outer flue gas jet pipe, the least significant end of interior exhaust gas nozzle is provided with diffuser, from the gas of flame tube jet flow Stream includes inner annular combustion gas stream, middle cyclic annular flue gas stream, outer ring-like air stream from inside to outside, is provided with igniter in shell.
Description
Technical field
The invention belongs to technical field of burner, more particularly, to a kind of ultralow nitrogen combustion apparatus of flue gas recirculation.
Background technique
Currently, containing fuel gas in the industrial waste gas of many petrochemical industry classes enterprise discharge, these industrial waste gases are direct
It is discharged into atmosphere, will seriously pollute environment.Due to both containing fuel gas in these industrial waste gases or containing a large amount of nitrogen, ammonia
Gas etc., the combustibles majority of these gases are hydrogen and carbon monoxide etc., easily burn and burning velocity is exceedingly fast, burn
Process is short, and calory burning is concentrated very much, is using common combustion system, fuel gas is used generation amount of heat and is utilized
While, nitrogen etc. can contain a large amount of nitrogen oxides in flue gas, by its direct emission to big by high-temperature oxydation in combustion process
Gas causes seriously to pollute, if handled by nitrogen separation in combustion gas or by the nitrogen oxides in flue gas, needs very big warp
Ji investment and normal handling expense, very big financial burden is brought to enterprise, can also bring secondary pollution.Therefore it is using more
Low nitrogen oxide burning technology in furnace.
Currently, being mostly on the market using the low NO of burning natural gas, nitrogen oxidation using the burner of such exhaust gas
Object is halted by environmental protection administration or is transformed by time limit considerably beyond discharge standard, many users, if not new science
Burner or reasonable more economical processing method realize that qualified discharge, the industrial waste gas containing fuel gas will be arranged directly
It puts or burns up, not only polluted environment but also a large amount of available heat is wasted, for the super low NO of natural gas used
It need to be closed using a large amount of flue gases and air pre-mixing, heating equipment power output and efficiency can be greatly reduced.
Summary of the invention
It, can will be in industrial waste gas in view of the above-mentioned problems, the present invention provides a kind of ultralow nitrogen combustion apparatus of flue gas recirculation
Fuel gas carries out low nitrogen oxide burning, and the heat of generation effectively utilized, have effectively achieved to industrial waste gas into
Row comprehensive utilzation, while the ultralow discharged nitrous oxides of the combustion standard states combustion gas such as natural gas and town gas are also more suitable for, effect
Fruit is more preferably.
Its technical solution is such that a kind of ultralow nitrogen combustion apparatus of flue gas recirculation, including shell and flame tube, the shell
Fuel gas inlet, circulating flue gas import, air intlet are respectively arranged on body, it is characterised in that: be respectively arranged in the shell
The fuel gas conduit that is connected with the fuel gas inlet, circulating flue gas import, circulating flue gas pipe, the fuel gas conduit and the circulating flue gas
Pipe coaxial arrangement and the fuel gas conduit are arranged in the outside of the circulating flue gas pipe, the fuel gas conduit and the circulating flue gas pipe it
Between cavity constitute blast tube, the inner chamber body of the circulating flue gas pipe constitutes exhaust gases passes, the shell, flame tube with it is described
Cavity between fuel gas conduit constitutes air duct, and the fuel gas conduit forms combustion gas cavity and the circulating flue gas Guan Mo in end
End form flue gas chamber, the flue gas chamber is connected with several foreign cigarette gas blowout pipes, be respectively arranged in the foreign cigarette gas blowout pipe with
The interior exhaust gas nozzle of the foreign cigarette gas blowout pipe coaxial arrangement, the interior exhaust gas nozzle are connected with the combustion gas cavity respectively, institute
The least significant end for stating interior exhaust gas nozzle is provided with diffuser, respectively includes inner annular from inside to outside from the air-flow of the flame tube jet flow
Combustion gas stream, middle cyclic annular flue gas stream, outer ring-like air stream are provided with igniter in the shell.
Further, the least significant end of the foreign cigarette gas blowout pipe is provided with horn mouth.
Further, the length of the interior exhaust gas nozzle is longer than the foreign cigarette gas blowout pipe, so that the interior exhaust gas nozzle
End and the diffuser stretch out the foreign cigarette gas blowout pipe.
Further, the diffuser is in umbrella.
Further, air swirl tooth is provided on the inner wall of the flame tube.
Further, the igniter includes setting in the intracorporal ignitron of the shell, one end of the ignitron with
Igniting fuel gas inlet is connected, and the other end of the ignitron extends in the flame tube and is provided with igniting and fire-fighting kept burning day and night
Mouth, it is described igniting and ever-burning flame nozzle location at be provided with automatic electronic igniting element.
Further, the fuel gas conduit connects the fuel gas inlet by gas inlet pipeline, and the air intlet passes through
Air inlet duct connects the air duct, and the circulating flue gas pipe connects the circulation cigarette by circulating flue gas admission line
Gas import.
Further, circulating flue gas electric control valve, the air intlet are provided on the circulating flue gas admission line
It is provided with electric adjustable air doors on pipeline, combustion gas electric control valve, the circulating flue gas are provided on the gas inlet pipeline
On electric control valve, the combustion gas electric control valve and the electric adjustable air doors on be equipped with Electric Actuator or servo electricity
Any one in machine.
Further, installation connecting flange is provided on the shell.
Further, inspection door is provided on the shell.
The ultralow nitrogen combustion apparatus of flue gas recirculation of the invention, using a small amount of circulating flue gas by combustion gas and air barrier simultaneously
After combustion gas diffusion dilution, then burning is mixed with air, it can be achieved that diffusion type lag extends combustion process, reduction is burnt in fire combustion
Heart temperature prevents nitrogen oxides from generating, realizes that low nitrogen environment protection emission, the heat of generation are effectively utilized, will be a large amount of
Industrial waste gas carries out comprehensive utilzation, not only can reduce production cost for enterprise, can more respond national energy conservation and emission reduction circulation warp
The requirement of Ji can create huge Social benefit and economic benefit, while also be more suitable for the combustion mark such as natural gas and town gas
The ultralow discharged nitrous oxides of state combustion gas, better effect.
Detailed description of the invention
Fig. 1 is the schematic front view of the ultralow nitrogen combustion apparatus of flue gas recirculation of the invention；
Fig. 2 is the schematic side view of the ultralow nitrogen combustion apparatus of flue gas recirculation of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
See Fig. 1, Fig. 2, the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation of the invention, including shell 1 and flame tube 2, shell 1
On be respectively arranged with fuel gas inlet 3, circulating flue gas import 4, air intlet 5, be respectively arranged in shell with fuel gas inlet 3, follow
Fuel gas conduit 6, circulating flue gas pipe 7, fuel gas conduit 6 and the coaxial arrangement of circulating flue gas pipe 7 and the fuel gas conduit 6 that ring gas inlet 4 is connected
The outside of circulating flue gas pipe 7 is set, and the diameter of fuel gas conduit 6 is greater than circulating flue gas pipe 7, between fuel gas conduit 6 and circulating flue gas pipe 7
Cavity constitute blast tube 8, the inner chamber body of circulating flue gas pipe 7 constitutes exhaust gases passes 9, shell 1, flame tube 2 and fuel gas conduit 6 it
Between cavity constitute air duct 10, fuel gas conduit 7 forms combustion gas cavity 11 and circulating flue gas pipe 7 in end and forms flue gas in end
Cavity 12, flue gas chamber 12 are connected with several foreign cigarette gas blowout pipes 13, are respectively arranged in foreign cigarette gas blowout pipe 13 and foreign cigarette gas blowout pipe
The interior exhaust gas nozzle 29 of coaxial arrangement, interior exhaust gas nozzle 29 is connected with combustion gas cavity 11 respectively, foreign cigarette gas blowout pipe 13 respectively with
Flue gas chamber 12 is connected, and foreign cigarette gas blowout pipe 13 and interior exhaust gas nozzle 29 are in one circle of circumferencial direction formation or multi-turn, in this implementation
In example, foreign cigarette gas blowout pipe 13 and interior exhaust gas nozzle 29 are provided with 2 circles, positioned at the foreign cigarette gas blowout pipe 13 and interior exhaust gas nozzle 29 of inner ring
It is longer than the foreign cigarette gas blowout pipe 13 and interior exhaust gas nozzle 29 positioned at outer ring, the least significant end of interior exhaust gas nozzle 12 is provided with diffuser 14,
Diffuser 14 is in umbrella, and the least significant end of foreign cigarette gas blowout pipe 13 is provided with horn mouth 15, and the length of interior exhaust gas nozzle 12 is longer than foreign cigarette
Gas blowout pipe 13, so that the end of interior exhaust gas nozzle 12 and diffuser 14 stretch out foreign cigarette gas blowout pipe 13, from the gas of 2 jet flow of flame tube
Stream respectively includes inner annular combustion gas stream, middle cyclic annular flue gas stream, outer ring-like air stream from inside to outside, is provided with igniting dress in shell 1
It sets.
In addition, in the present embodiment, it is provided with air swirl tooth 15 on the inner wall of flame tube 2, air swirl tooth can be with
Air is set to generate eddy flow and introducing portion flue gas recirculation, rotational flow gas cooperation flame tube well-behaved flame profile and can overcome burner hearth
Resistance.
Igniter in the present embodiment includes setting in the intracorporal ignitron 16 of shell, and one end of ignitron 16 and igniting are fired
Gas import 17 is connected, and the other end of ignitron 16 extends in flame tube 2 and is provided with igniting and ever-burning flame nozzle 18, lights a fire
And automatic electronic igniting element 19 is provided at 18 position of ever-burning flame nozzle.
In the present embodiment, fuel gas conduit 6 connects fuel gas inlet 3 by gas inlet pipeline 20, and air intlet 5 passes through air
Inlet pipeline 21 connects air duct 10, and circulating flue gas pipe 7 connects circulating flue gas import 4 by circulating flue gas admission line 22.
In addition, in the present embodiment, circulating flue gas electric control valve 23 being provided on gas inlet pipeline 20, can be used in
The air inflow of circulating flue gas；It is provided with electric adjustable air doors 24 on air inlet duct 21, can be used in the air inlet for controlling air
Amount；It is provided with combustion gas electric control valve 25 on gas inlet pipeline 22, can be used in the air inflow for controlling combustion gas；Circulating flue gas electricity
Servo motor 26 is mounted on dynamic regulating valve 23, combustion gas electric control valve 25 and electric adjustable air doors 24.
In addition, be additionally provided on shell installation connecting flange 27 and inspection door 28, the setting of inspection door 28 can be convenient dimension
Repair inspection.
The course of work of the above-mentioned ultralow nitrogen combustion apparatus of flue gas recirculation is as follows: after combustion gas is passed through from fuel gas inlet, by combustion
Diffuser is first passed through after tracheae to be spread, hollow area is formed, and simultaneously, circulating flue gas is after circulating flue gas import entrance, warp
Be discharged after crossing circulating flue gas pipe, spread under the action of horn mouth and inside combustion gas, circulating flue gas by combustion gas and air barrier,
It dilutes with combustion gas mixing, is mixed again with outermost combustion-supporting air later again, by ignition device, burning output multi beam
Flame.It can realize that diffusion type lag extends combustion process, reduce burning fire combustion central temperature, nitrogen oxides is prevented to generate, real
Existing low nitrogen burning, low nitrogen environment protection emission, through detecting, there is different degrees of decline under different load in NOx emission, and
Less than 50 milligrams/cubic metre, well below 150 milligrams/cubic metre of requirements of the national standard, discharge meets " boiler atmosphere pollution
Object discharge standard " the special emission limit requirement of atmosphere pollution in GB13271-2014, also meet at present national each province and city about
Gas fired-boiler NOx harsh discharge standard.
Introducing flue gas mode traditional at present is passed through in gas diffusion and turbulent flow realization and furnace in combustion zone
There is introducing flue gas and air, combustion gas mixing space be small, time of contact is short, it is difficult to which realization is sufficiently mixed, and is easily caused in flue gas mixing
The problem of burner outlet oxygen concentration is unevenly distributed；Meeting is so that easily to occur local oxygen concentration in combustion zone excessively high, in turn
Cause burner hearth localized hyperthermia, promote the formation of NOx, is unfavorable for the emission reduction of NOx.For this purpose, flue gas recirculation provided by the invention is ultralow
Nitrogen combustion apparatus, the outer circulation low-temperature flue gas taken at boiler exterior outlet flue, by burner mechanism be discharged can
One layer of flue gas is distributed in combustion gas outside, not only fire-retardant but also cooling burning effect is played, so as to efficiently reduce combustion zone
Oxygen concentration and temperature inhibit NOx during fuel gas buring to generate, realize gas fired-boiler ultra-low emission of NOx, can be not only enterprise
Industry reduce environment protection emission cost, can more respond the requirement of national energy conservation and emission reduction circular economy, can create huge social benefit with
Economic benefit；Meanwhile the heat burning for generation of burning can be utilized effectively, empty calory loss.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of ultralow nitrogen combustion apparatus of flue gas recirculation, including shell and flame tube, be respectively arranged on the shell combustion gas into
Mouthful, circulating flue gas import, air intlet, it is characterised in that: be respectively arranged in the shell and the fuel gas inlet, circulation cigarette
Fuel gas conduit, circulating flue gas pipe, the fuel gas conduit and circulating flue gas pipe coaxial arrangement and the combustion gas that gas import is connected
The outside of the circulating flue gas pipe is arranged in pipe, and it is logical that the cavity between the fuel gas conduit and the circulating flue gas pipe constitutes combustion gas
The inner chamber body in road, the circulating flue gas pipe constitutes exhaust gases passes, the cavity structure between the shell, flame tube and the fuel gas conduit
At air duct, the fuel gas conduit forms combustion gas cavity in end and the circulating flue gas pipe is in end formation flue gas chamber, institute
It states flue gas chamber and is connected with several foreign cigarette gas blowout pipes, be respectively arranged in the foreign cigarette gas blowout pipe coaxial with the foreign cigarette gas blowout pipe
The interior exhaust gas nozzle being arranged, the interior exhaust gas nozzle are connected with the combustion gas cavity respectively, the fuel gas conduit and the circulation
Fume pipe forms several air jet pipes in end, and the air jet pipe includes the interior exhaust gas nozzle and foreign cigarette gas blowout pipe of coaxial arrangement, institute
Interior exhaust gas nozzle to be stated to be connected with the fuel gas conduit respectively, the foreign cigarette gas blowout pipe is connected with the circulating flue gas pipe respectively,
The least significant end of the interior exhaust gas nozzle is provided with diffuser, respectively includes inner ring from inside to outside from the air-flow of the flame tube jet flow
Shape combustion gas stream, middle cyclic annular flue gas stream, outer ring-like air stream are provided with igniter in the shell.
2. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: the foreign cigarette gas blowout pipe
Least significant end be provided with horn mouth.
3. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 2, it is characterised in that: the interior exhaust gas nozzle
Length be longer than the foreign cigarette gas blowout pipe so that the end of the interior exhaust gas nozzle and the diffuser stretch out the outer flue gas
Jet pipe.
4. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: the diffuser is in umbrella
Shape.
5. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: in the flame tube
Air swirl tooth is provided on inner wall.
6. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: the igniter packet
Setting is included in the intracorporal ignitron of the shell, one end of the ignitron is connected with igniting fuel gas inlet, the ignitron
The other end extends in the flame tube and is provided with igniting and ever-burning flame nozzle, sets at the igniting and ever-burning flame nozzle location
It is equipped with automatic electronic igniting element.
7. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: the fuel gas conduit passes through
Gas inlet pipeline connects the fuel gas inlet, and the air intlet connects the air duct, institute by air inlet duct
It states circulating flue gas pipe and the circulating flue gas import is connected by circulating flue gas admission line.
8. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 7, it is characterised in that: the circulating flue gas into
It is provided with circulating flue gas electric control valve in feed channel, electric adjustable air doors, the combustion are provided on the air inlet duct
Be provided with combustion gas electric control valve on gas admission line, the circulating flue gas electric control valve, the combustion gas electric control valve and
On the electric adjustable air doors on any one in Electric Actuator or servo motor is installed.
9. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: be arranged on the shell
There is installation connecting flange.
10. the ultralow nitrogen combustion apparatus of a kind of flue gas recirculation according to claim 1, it is characterised in that: set on the shell
It is equipped with inspection door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910856512.0A CN110469848B (en) | 2019-09-11 | 2019-09-11 | Flue gas circulation ultralow nitrogen combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910856512.0A CN110469848B (en) | 2019-09-11 | 2019-09-11 | Flue gas circulation ultralow nitrogen combustion device |
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| Publication Number | Publication Date |
|---|---|
| CN110469848A true CN110469848A (en) | 2019-11-19 |
| CN110469848B CN110469848B (en) | 2024-08-02 |
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|---|---|---|---|
| CN201910856512.0A Active CN110469848B (en) | 2019-09-11 | 2019-09-11 | Flue gas circulation ultralow nitrogen combustion device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043598A (en) * | 2019-12-24 | 2020-04-21 | 宁夏吉元冶金集团有限公司 | Low-nitrogen combustor with high combustion efficiency |
| CN112377901A (en) * | 2020-10-30 | 2021-02-19 | 太原绿威环境能源科技工程有限公司 | Combustion head of air and gas premixing combustor of condensing boiler and premixing combustion method thereof |
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2019
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|---|---|---|---|---|
| EP0391858A1 (en) * | 1989-04-07 | 1990-10-10 | BALSIGER, Benno | Apparatus for flue gas recirculation in oil and gas burners |
| US5569029A (en) * | 1992-05-13 | 1996-10-29 | Ppv Verwaltungs Ag | Burner |
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|---|---|---|---|---|
| CN111043598A (en) * | 2019-12-24 | 2020-04-21 | 宁夏吉元冶金集团有限公司 | Low-nitrogen combustor with high combustion efficiency |
| CN112377901A (en) * | 2020-10-30 | 2021-02-19 | 太原绿威环境能源科技工程有限公司 | Combustion head of air and gas premixing combustor of condensing boiler and premixing combustion method thereof |
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| CN110469848B (en) | 2024-08-02 |
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