CN108131668B - Premix the burner of gas and the non-premix mutual preheated burning of the strong eddy flow of gas - Google Patents
Premix the burner of gas and the non-premix mutual preheated burning of the strong eddy flow of gas Download PDFInfo
- Publication number
- CN108131668B CN108131668B CN201711458983.3A CN201711458983A CN108131668B CN 108131668 B CN108131668 B CN 108131668B CN 201711458983 A CN201711458983 A CN 201711458983A CN 108131668 B CN108131668 B CN 108131668B
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- Prior art keywords
- gas
- premix
- mixer
- burner
- air
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Classifications
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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
-
- 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
- F23D14/48—Nozzles
-
- 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
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/00008—Burner assemblies with diffusion and premix modes, i.e. dual mode burners
Abstract
The present invention relates to the burners of premix gas and the non-premix mutual preheated burning of the strong eddy flow of gas, combustion air is effectively solved to mix with coal gas unevenly, mixing intensity is not high, air velocity distribution distribution is difficult to uniformly, the not high problem of ignition temperature, porous body exhanst gas outlet is arranged at hybrid combustor lower part, there is at least 1 pair of mixer tube on the cylinder of burner wall, there are gas inlet pipe and air intlet pipe symmetrical above and below in mixer tube outer end, there is the adjusting air current spray nozzle put in mixer tube at the closing of outer end, mixer tube inner end is connected to through mixer nozzle with hybrid combustor inclination, there is the air baffle being fixed on mixer tube inner wall in mixer tube.Present invention improves coal gas and air swirl pre-mixing combustion characteristic, realize the reinforcing of the swirl flow combustion in strong eddy flow hybrid combustor, reach the technical effect of " excess enthalpy combustion ", realize the whole controllable of combustion process.
Description
Technical field
It is especially a kind of pre- the present invention relates to the equipment for the air-flow regulation burning that the heat utilization equipment of industrial furnace class uses
The burner of mixed gas and the non-premix mutual preheated burning of the strong eddy flow of gas.
Background technique
Currently, with the optimization of technical process and to the increasingly prominent of environmental issue in industrial furnace, to burner
Combustion process efficient burning and adjustable combustion propose requirements at the higher level, combustion technology obtain incremental advances under conditions of,
How high-intensitive from preheated burning using the realization of strong eddy flow, to significantly improve combustion intensity and temperature, or even generating is more than theory
The partial combustion temperature of ignition temperature exactly compels highly necessary to solve the problems, such as at present.
Summary of the invention
For above situation, to overcome prior art defect, the mesh of the present invention is just to provide a kind of premix gas and non-premix
The burner of the mutual preheated burning of the strong eddy flow of gas, can effectively solve combustion air mixed with coal gas uneven, mixing intensity is not high,
Air velocity distribution distribution is difficult to uniform, the not high various problems of ignition temperature.
The technical solution that the present invention solves is, including the spray of burner wall, hybrid combustor, mixer tube, mixer
Mouth, air baffle, adjusting air current spray nozzle, gas inlet pipe, air intlet pipe and porous body exhanst gas outlet, burner wall are
The spherical top on top connects composition with the cylinder of lower part, and the inner cavity of burner wall is hybrid combustor, hybrid combustor
Porous body exhanst gas outlet is arranged at lower part, and horizontal symmetrical is evenly equipped at least 1 pair of mixer tube on the cylinder of burner wall, mixing
The gas inlet pipe and air intlet pipe in upper and lower symmetry shape, the outer end of mixer tube are disposed on the outer end side wall of device cylinder
Closing, center is axially disposed at the closing of outer end an adjusting air current spray nozzle put in mixer tube, mixer tube it is interior
End puts in the cylinder of burner wall and is connected to through mixer nozzle with hybrid combustor inclination, in coal gas in mixer tube
Adjusting air current spray nozzle two sides horizontal symmetrical at space between inlet tube and air intlet pipe, which is equipped with, is fixed on mixer tube
Air baffle on inner wall.
The present invention is the breakthrough improvement done to the structure and performance of existing industrial furnace burner, and improves coal gas
With air swirl pre-mixing combustion characteristic, realize in strong eddy flow hybrid combustor swirl flow combustion reinforcing, and by premix and
The combustion system of non-premix realizes the combustion state mutually strengthened, and makes up to the technical effect of " excess enthalpy combustion ", thus real
The entirety of existing combustion process is controllable, and coal gas and air enter mixer tube by upper and lower both direction respectively in the present invention, in gas
Stream baffled outlet end formation middle part is premixed flow and top and lower part are the jet expansion air-flow of unmixing coal gas and air
Distribution, since mixer tube is two at least symmetrical, air and coal gas into symmetrical two mixer tubes, shape
At opposite jet expansion air flow method, then strong eddy flow of two strands of air-flows in the middle part of hybrid combustor formation from preheated burning and
Upper and lower part air-flow is strong eddy flow mixing and strong preheated burning between the combustion-gas flow of middle part, this part just easily occurs
Combustion process from facilitation phenomenon, to the whole overheavy firing process from preheating of " excess enthalpy combustion " occur, due to being provided with
Air current spray nozzle is adjusted, adjusting and the control of combustion process are rapidly achieved, using this strong rotation of the present invention on industrial furnace
The combination of the premixed combustion of stream and non-premixed combustion, can be directed to different fuel gas burings when effectively improve burner performance with
Adaptability is finally reached and saves fuel, investment reduction, reduces harmful gas emission.
Detailed description of the invention
Fig. 1 is sectional front view of the invention.
Fig. 2 is the A-A of Fig. 1 of the present invention to cross sectional plan view.
Fig. 3 is the B-B direction section right view of Fig. 1 of the present invention.
Specific embodiment
It elaborates below in conjunction with attached drawing to a specific embodiment of the invention.
As shown in Figure 1-Figure 3, the present invention includes burner wall 1, hybrid combustor 2, mixer tube 3, mixer spray
Mouth 4, adjusts air current spray nozzle 6, gas inlet pipe 7, air intlet pipe 8 and porous body exhanst gas outlet 9, burner at air baffle 5
Wall 1 is that the spherical top on top connects composition with the cylinder of lower part, and the inner cavity of burner wall is hybrid combustor 2, mixing
Porous body exhanst gas outlet 9 is arranged at the lower part of combustion chamber, and horizontal symmetrical is evenly equipped at least 1 pair of mixer on the cylinder of burner wall
Cylinder 3 is disposed with gas inlet pipe 7 and air intlet pipe 8 in upper and lower symmetry shape, mixing on the outer end side wall of mixer tube
The outer end of device cylinder 3 is closed, and center is axially disposed at the closing of outer end the adjusting air current spray nozzle 6 put in mixer tube,
The inner end of mixer tube 3 puts in the cylinder of burner wall and is connected to through mixer nozzle 4 with hybrid combustor inclination, mixes
The 6 two sides horizontal symmetrical of adjusting air current spray nozzle at space in clutch cylinder between gas inlet pipe and air intlet pipe is equipped with
The air baffle 5 being fixed on mixer tube inner wall.
The burner wall 1 is the refractory material structure that high temperature resistant anti-thermal shock is built in inner walls made of heat resisting steel
At upper hemispherical shape, the composite structure of lower cylindrical.
The section of the mixer tube 3 is rectangle or circle.
The gas inlet pipe 7 and air intlet on one of mixer tube in each pair of mixer tube 3
Pipe 8 and the position of gas inlet pipe 7 and air intlet pipe 8 on another symmetrical mixer tube are opposite (i.e. when each pair of
The gas inlet pipe 7 on one of mixer tube in mixer tube is symmetrical when upper, air intlet pipe 8 is under
Another mixer tube on gas inlet pipe 7 then under, air intlet pipe 8 is upper).
The length of the air baffle 5 is greater than the internal diameter of gas inlet pipe or air intlet pipe, is less than adjusting air-flow spray
Length of the mouth 6 in mixer tube.
4 coaxial communication of mixer tube 3 and mixer nozzle, the outlet of mixer nozzle 4 and hybrid combustor
It is connected, the tilt angle between the axial direction and hybrid combustor radial direction of mixer nozzle 4 is 0 ° -90 °.
The inner end of the adjusting air current spray nozzle 6 is outlet section, and the outlet section for adjusting air current spray nozzle 6 passes through gas inlet pipe
The inner end that space between air intlet pipe puts in coaxial mixer tube 3 is inserted into mixer nozzle 4.
The section of the adjusting air current spray nozzle is rectangle or circle.
One end that the mixer nozzle 4 is connected with hybrid combustor 2 is the outlet end of mixer nozzle, mixer
The outlet end of nozzle is the rectangular configuration that height is greater than length.
The outlet end of the mixer nozzle is divided at least three independent outlets along short transverse.
The porous body exhanst gas outlet 9 is to be evenly equipped with above and below multiple to communicate made of the ceramic material of resistance to 1500 DEG C of high temperature
The porous structure in hole.
When implementation, coal gas and combustion air pass through gas inlet pipe 7 and air intlet pipe 8 into two mixer cylinders respectively
In body 3, because being limited by air baffle 5, combustion air not can be carried out with coal gas it is sufficient mix, a mixer cylinder wherein
The air flow method of top coal gas, middle part gaseous mixture, lower part combustion air is formed in body 3, is formed in another mixer tube 3
Portion is that air, middle part are the air flow methods that gaseous mixture, lower part are coal gas, and point of strong eddy flow is formed subsequently into hybrid combustor 2
The upper and lower of layer first mixes preheated burning state again for air-flow, and intermediate is the biography that is mutually related for premixing gas preheated burning state
Heat, the combustion process of flowing and burning；Since hybrid combustor 2 is the environment being almost insulated, mutual heating combustion process is obtained
Constantly to strengthen, and pass through porous body exhanst gas outlet 9 in the outlet end of hybrid combustor 2 (i.e. the lower part of hybrid combustor)
High temperature heat as much as possible is stored, then passes to the rotation for the preheated burning being pre-mixed in the form of radiant heat transfer
Stream；In this way, the high flow rate of coal gas and air, Qiang Xuanliu, high combustion intensity and combustion temperatures mutually promote self
The combustion process of reinforcing is achieved, and the combustion state of " excess enthalpy combustion " occurs；For the high-strength and high temperature of low-heat value gas
Burning provides corresponding burning situation；But such combustion process (positive feedback system) there are in fact uncontrollable spy
Sign, in high load capacity, temperature is high, and temperature is high under high heating value situation, although the outflow of high-temperature flue gas plays a part of balance,
It is unstable effect；For this purpose, it is mixed with regard to being entered by adjusting air current spray nozzle 6 to adjust air-flow (backflow flue gas or auxiliary air)
Combination burning room effectively inhibits the generation of " super enthalpy (superadiabatic) burning " process, reduces ignition temperature and reduce combustion intensity；It is aobvious
So, the adjusting that the combustion process of self reinforcement combines regulation air-flow to intervene automatically, so that this burner of the present invention is high-strength
Degree organically combines with high-temp combustion and controlled burning, becomes the burner for realizing the optimization of various gaseous fuels.
Therefore, application of the burner of the present invention in heat utilization equipment can sufficiently improve and optimize its thermal property, effectively realization work
The adjusting and control of skill process, and reduce pollutant emission and improve energy utilization efficiency, keep its energy-saving and environment-friendly benefit evident
It shows undoubtedly.
The present invention be one kind can be realized the strong swirl flow combustion of partly-premixed gas mixed with fraction eddy flow with mutually preheating fire
The burn and porous body exhanst gas outlet for playing accumulation of heat by being mixed and burned chamber outlet end realizes the combustion of accumulation of heat and air-flow rectification
Burn device.
The present invention effectively solves combustion air and mixes that uneven, mixing intensity is not high, air velocity distribution distribution is difficult to coal gas
Uniformly, the more low various problems of ignition temperature, but also the premixed combustion intensity being able to achieve under high swirl strength and high burning
Temperature, and part sufficiently premix and preheated burning are not premixed with realization under strong eddy flow state by combustion temperatures, at this time
Combustion state easily enter the combustion state mutually strengthened so that remaining combustion process intensity is higher, ignition temperature is higher,
And the combustion intensity of burner of the present invention effectively can also be adjusted and be controlled with ignition temperature, and this is the height of low-heat value gas
By force, temperature control, control nitrogen, efficient burning provide effective technological means.
Claims (10)
1. the burner of a kind of premix gas and the non-premix mutual preheated burning of the strong eddy flow of gas, including burner wall (1), mixing combustion
It burns room (2), mixer tube (3), mixer nozzle (4), air baffle (5), adjust air current spray nozzle (6), gas inlet pipe
(7), air intlet pipe (8) and porous body exhanst gas outlet (9), burner wall (1) are the spherical top on top and the cylinder of lower part
Body connection composition, the inner cavity of burner wall are hybrid combustor (2), which is characterized in that the lower part of hybrid combustor has porous
Body exhanst gas outlet (9), horizontal symmetrical is evenly equipped at least 1 pair of mixer tube (3), mixer cylinder on the cylinder of burner wall
The gas inlet pipe (7) and air intlet pipe (8) in upper and lower symmetry shape, mixer tube (3) are disposed on the outer end side wall of body
Outer end closing, center is axially disposed at the closing of outer end the adjusting air current spray nozzle (6) put in mixer tube, mixer
The inner end of cylinder (3) puts in the cylinder of burner wall and is connected to through mixer nozzle (4) with hybrid combustor inclination, mixes
Adjusting air current spray nozzle (6) two sides horizontal symmetrical at space in device cylinder between gas inlet pipe and air intlet pipe is equipped with
The air baffle (5) being fixed on mixer tube inner wall.
2. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the burner wall (1) is the refractory material composition for building high temperature resistant anti-thermal shock in inner walls made of heat resisting steel
Upper hemispherical shape, the composite structure of lower cylindrical.
3. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the section of the mixer tube (3) is rectangle or circle.
4. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the gas inlet pipe (7) and air intlet pipe on one of mixer tube in each pair of mixer tube (3)
(8) opposite with the position of gas inlet pipe (7) and air intlet pipe (8) on another symmetrical mixer tube.
5. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the length of the air baffle (5) is greater than the internal diameter of gas inlet pipe or air intlet pipe, is less than adjusting air current spray nozzle
(6) length in mixer tube.
6. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the mixer tube (3) and mixer nozzle (4) coaxial communication, the outlet of mixer nozzle (4) and hybrid combustor
It is connected, the tilt angle between the axial direction and hybrid combustor radial direction of mixer nozzle (4) is 0 ° -90 °.
7. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the inner end of the adjusting air current spray nozzle (6) is outlet section, and the outlet section for adjusting air current spray nozzle (6) passes through gas inlet pipe
The inner end that space between air intlet pipe puts in coaxial mixer tube (3) is inserted into mixer nozzle (4)；It is described
Adjusting air current spray nozzle section be rectangle or circle.
8. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In one end that the mixer nozzle (4) is connected with hybrid combustor (2) is the outlet end of mixer nozzle, mixer
The outlet end of nozzle is the rectangular configuration that height is greater than length.
9. the burner of premix gas according to claim 8 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the outlet end of the mixer nozzle is divided at least three independent outlets along short transverse.
10. the burner of premix gas according to claim 1 and the non-premix mutual preheated burning of the strong eddy flow of gas, feature exist
In the porous body exhanst gas outlet (9) is to be evenly equipped with multiple phase through-holes up and down made of the ceramic material of resistance to 1500 DEG C of high temperature
Porous structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458983.3A CN108131668B (en) | 2017-12-28 | 2017-12-28 | Premix the burner of gas and the non-premix mutual preheated burning of the strong eddy flow of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458983.3A CN108131668B (en) | 2017-12-28 | 2017-12-28 | Premix the burner of gas and the non-premix mutual preheated burning of the strong eddy flow of gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131668A CN108131668A (en) | 2018-06-08 |
| CN108131668B true CN108131668B (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711458983.3A Active CN108131668B (en) | 2017-12-28 | 2017-12-28 | Premix the burner of gas and the non-premix mutual preheated burning of the strong eddy flow of gas |
Country Status (1)
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| CN (1) | CN108131668B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951454B2 (en) * | 2003-05-21 | 2005-10-04 | The Babcock & Wilcox Company | Dual fuel burner for a shortened flame and reduced pollutant emissions |
| CN103542408A (en) * | 2012-07-10 | 2014-01-29 | 上海天纳克排气系统有限公司 | Semi-premixing natural gas pipe type combustor |
| CN203517788U (en) * | 2013-10-23 | 2014-04-02 | 陈维汉 | Porous body burning combustor of remixing coal gas whirl flow with premix gas |
| CN104132340A (en) * | 2013-05-04 | 2014-11-05 | 梁燕龙 | Premixing type pressure-adjusting secondary fuel gas nozzle and method |
| CN106196054A (en) * | 2016-08-06 | 2016-12-07 | 陈维汉 | The cyclone classification of a kind of center water conservancy diversion regulation and the burner of temperature-controllable |
-
2017
- 2017-12-28 CN CN201711458983.3A patent/CN108131668B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951454B2 (en) * | 2003-05-21 | 2005-10-04 | The Babcock & Wilcox Company | Dual fuel burner for a shortened flame and reduced pollutant emissions |
| CN103542408A (en) * | 2012-07-10 | 2014-01-29 | 上海天纳克排气系统有限公司 | Semi-premixing natural gas pipe type combustor |
| CN104132340A (en) * | 2013-05-04 | 2014-11-05 | 梁燕龙 | Premixing type pressure-adjusting secondary fuel gas nozzle and method |
| CN203517788U (en) * | 2013-10-23 | 2014-04-02 | 陈维汉 | Porous body burning combustor of remixing coal gas whirl flow with premix gas |
| CN106196054A (en) * | 2016-08-06 | 2016-12-07 | 陈维汉 | The cyclone classification of a kind of center water conservancy diversion regulation and the burner of temperature-controllable |
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| Publication number | Publication date |
|---|---|
| CN108131668A (en) | 2018-06-08 |
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