CN110332522A - A kind of heat accumulating type flue gas recirculation burner and combustion system - Google Patents
A kind of heat accumulating type flue gas recirculation burner and combustion system Download PDFInfo
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- CN110332522A CN110332522A CN201910549652.3A CN201910549652A CN110332522A CN 110332522 A CN110332522 A CN 110332522A CN 201910549652 A CN201910549652 A CN 201910549652A CN 110332522 A CN110332522 A CN 110332522A
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- burner
- flue gas
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 99
- 239000003546 flue gas Substances 0.000 title claims abstract description 47
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000000567 combustion gas Substances 0.000 claims abstract description 52
- 238000005338 heat storage Methods 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims description 43
- 238000010304 firing Methods 0.000 claims description 35
- 239000002737 fuel gas Substances 0.000 claims description 11
- 230000001154 acute effect Effects 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 239000000779 smoke Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036651 mood Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
- F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
- F23C6/042—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with fuel supply in stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/04—Arrangements of recuperators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/20—Burner staging
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of heat accumulating type flue gas recirculation burners, the combustion chamber including heat storage tank and at least two-stage, and combustion gas and air enter combustion chamber after being each passed through heat storage tank；Combustion gas classification channel and air classification channel are provided between heat storage tank and combustion chamber；It is connected with several groups flue gas recirculation channel on air classification channel, burns the flue gas generated after burning to be further passed through in burner.By the nozzle structure for integrating heat storage tank, composite chamber and flue gas recirculation channel, so that combustion gas and air is entered fractional combustion room after the heat for absorbing heat storage tank, take full advantage of waste heat caused by flue gas, it is energy-saving；By the way that combustion gas and air classification are filled into composite chamber, ignition temperature is reduced, the generation of NOx is reduced；The design recycled by flue gas forced refluence, is furthermore achieved multistage combustion, and combustion gas meets levels of emissions requirement of the national environmental protection for NOx in flue gas in the diversified combustion state of different stage.
Description
Technical field
The present invention relates to recuperative heater technical field more particularly to a kind of heat accumulating type flue gas recirculation burner and burnings
System.
Background technique
Tradition burner energy utilization rate is low at present, and combustion system is single, and the fluff pulps such as NOx are larger to be difficult to meet ring
Guarantor's standard.How the generation and discharge of NOx are efficiently controlled, and then improving atmosphere quality is that today's society is urgently to be resolved
One of major issue.Meanwhile increasingly strict environmental regulation requires to develop row of the advanced technology to reduce the pollutants such as NOx
It puts.Therefore, low NOx combusting technology has a very important significance the energy-saving and emission-reduction in China.
Low NOx combusting technology is to improve combustion apparatus or control burning condition, to reduce each of NOx concentration in combustion tail gas
Item technology.Influencing the principal element that NOx is generated in combustion process is residence time in high-temperature region of ignition temperature, flue gas, flue gas
In the concentration and mixability of various components it is cooling therefore to change air-fuel ratio, the temperature of combustion air, combustion zone
The shape design of degree and burner can reduce the generation of NOx in combustion process.
With the pay attention to day by day that Environmental is protected, how air staged combustion technology is utilized, and by air classification
Technology develops to depth air classification, that is, air multi classification direction is developed, and a main trend of industrial furnace burner is become.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of heat accumulating type flue gas recirculation burner,
The burner realizes the multistage combustion of combustion gas by way of forced refluence recycles, and reduces temperature when combustion gas and air burning
Degree, effectively inhibits and reduces the generation and discharge of NOx.
The present invention also provides a kind of combustion systems using above-mentioned burner.
To achieve the above object, technical solution of the present invention is as follows:
A kind of heat accumulating type flue gas recirculation burner, the combustion chamber including heat storage tank and at least two-stage, combustion gas and air are each passed through
Enter the combustion chamber after the heat storage tank；Combustion gas classification channel and air are provided between the heat storage tank and the combustion chamber
It is classified channel；Several groups flue gas recirculation channel is connected on the air classification channel, to the flue gas that will be generated after burning
Further it is passed through burning in burner.
Further, the heat storage tank includes regenerator gas case and air heat storage tank, after combustion gas passes through the regenerator gas case
It flows through blast tube and is classified channel into the combustion gas, air enters institute by flowing through sky exhaust gases passes after the air heat storage tank
State air classification channel.
Further, the combustion chamber includes first-stage firing chamber and secondary combustion chamber, the air inlet end face of the first-stage firing chamber
On be provided with several from the combustion gas classification channel draw level-one fuel gas hole, tilted in the radial sidewalls of first-stage firing chamber
It is provided with several combustion air stomatas drawn from the air classification channel, the longitudinal center line of multiple combustion air stomatas
It converges on the horizontal axis of first-stage firing chamber.
Further, the first-stage firing chamber and the secondary combustion chamber penetrate through, and are arranged on the end face of the secondary combustion chamber
The eddy flow stomata for having several to draw from the air classification channel, multiple eddy flow stomatas are circumferentially arranged in the level-one
The outside of combustion chamber.
Further, the eddy flow stomata is the multiple column stomatas being obliquely installed, and eddy flow stomata and tangent to periphery direction press from both sides
The acute angle at angle is 30-60 °.
Further, the periphery of the secondary combustion chamber is circumferential is provided with several from the two of combustion gas classification channel extraction
Grade fuel gas hole, the longitudinal center line in multiple second gas burning holes converge on the horizontal axis of secondary combustion chamber.
Further, the secondary combustion chamber connects with the burner hearth of industrial furnace, and the second gas burning hole inclination extends to described
The acute angle of the end face of burner hearth, the second gas burning hole and horizontal direction angle is 30-45 °.
Further, the first-stage firing chamber, secondary combustion chamber and burner hearth are arranged concentrically, and constitute combustion gas inside the burner
Three-level burning.
Further, the section in the eddy flow stomata and second gas burning hole is round or polygon.
Further, multiple honeycomb heat accumulation bodies or heat-storing sphere are provided in the heat storage tank.
Further, the burner further includes shell, and thermal insulation material is filled between the shell and the heat storage tank.
Further, the air classification channel is circumferentially around the annular housing in the first-stage firing chamber periphery.
Further, the input end in the flue gas recirculation channel is provided with the valve of control smoke backflow.
A kind of heat accumulating type flue gas recirculation combustion system, the burner including being symmetrically mounted on burner hearth two sides.
The present invention is made by the nozzle structure for integrating heat storage tank, composite chamber and flue gas recirculation channel
Combustion gas and air enter fractional combustion room after the heat for absorbing heat storage tank, take full advantage of waste heat caused by flue gas, energy conservation
Consumption reduction；By the way that combustion gas and air classification are filled into composite chamber, ignition temperature is reduced, the generation of NOx is reduced；Pass through cigarette
The design of gas forced refluence recycling, is back to flue gas recirculation in air classification channel, reduces the concentration of oxygen, into one
Step realizes multistage combustion, to effectively inhibit the generation of NOx.
Detailed description of the invention
Fig. 1 is the main view the schematic diagram of the section structure of burner in the present invention；
Fig. 2 is the top view cross section structural schematic diagram of burner in the present invention；
Fig. 3 is the right side structural representation of burner in the present invention.
In figure, 1- shell, 2- regenerator gas case, 3- air heat storage tank, 4- heat preservation rock, 5- heat storage, 6- combustion gas classification
Channel, 7- first-stage firing chamber, 8- level-one fuel gas hole, 9- air classification channel, 10- combustion air stomata, 11- secondary combustion chamber, 12-
Eddy flow stomata, 13- flue gas recirculation channel, 14- valve, 15- second gas burning hole, 16- blast tube, 17- sky exhaust gases passes.
Specific embodiment
In the description of present embodiment, the orientation of the instructions such as term " on ", "lower", "front", "rear", "left", "right" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, it is only for convenient for the description present invention and simplify description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as
Specific indication or suggestion relative importance.
To clearly demonstrate design philosophy of the invention, below with reference to example, the present invention will be described.
A kind of heat accumulating type flue gas recirculation burner, connects with the burner hearth of industrial furnace, and the burner includes heat storage tank and at least
The combustion chamber of two-stage, combustion gas and air enter the combustion chamber after being each passed through the heat storage tank；The heat storage tank and the combustion
It burns and is provided with combustion gas classification channel and air classification channel between room；Several groups flue gas is connected with again on the air classification channel
Circulation canal burns the flue gas generated after burning to be further passed through in burner.
Burner in the present invention, mainly includes thermal storage unit, and fractional combustion unit and smoke backflow forced recirculation are logical
Road.Air and combustion gas before entering into the combustion chamber, exchange heat through thermal storage unit respectively, to absorb the heat on heat storage, guarantee
Burning required temperature, has saved fuel consumption.
Channel and air classification channel are classified from combustion gas and enters combustion gas and the air of composite chamber, reduce every grade of burning
Ignition temperature in room effectively inhibits the generation of NOx, and on the one hand the mode of multistage combustion makes more filling for fuel gas buring
Point, the hierarchical level of air is on the other hand also effectively increased, the production quantity of NOx is further decreased.
By using smoke backflow forced recirculation channel, the flue gas generated after burning is passed through air classification channel, is dropped
The low concentration of oxygen, further realizes the multistage combustion of low NOx.
In order to which what is be more clear is illustrated the technical solution in the present invention, carried out in the form of specific embodiment below
Explanation.
Embodiment 1
Referring to figures 1-3, a kind of heat accumulating type flue gas recirculation burner of the present embodiment, including regenerator gas case 2, air heat storage tank
3, first-stage firing chamber 7 and secondary combustion chamber 11, combustion gas are logical into combustion gas classification by flowing through blast tube 16 after regenerator gas case 2
Road 6, air flow through sky exhaust gases passes 17 into air classification channel 9 after passing through air heat storage tank 3, and combustion gas and air are respectively by firing
Gas is classified channel 6 and air classification channel 9 and enters in the burner hearth of level-one, secondary combustion chamber and industrial furnace；On air classification channel 9
It is connected with flue gas recirculation channel 13, burns, is finally reached more the flue gas generated after burning to be further passed through in burner
The purpose of grade burning.
Combustion gas classification channel 6 is connected to by level-one fuel gas hole 8 with first-stage firing chamber 7, and air classification channel 9 passes through combustion air
Stomata 10 is connected to first-stage firing chamber 7.In the present embodiment, level-one fuel gas hole 8 is three around 7 center of first-stage firing chamber, from combustion
The horizontal channel drawn on gas classification channel 6, the joining distal ends of level-one fuel gas hole 8 are on the air inlet end face of first-stage firing chamber 7；It is empty
It is circumferentially around the annular housing in the periphery of first-stage firing chamber 7 that gas, which is classified channel 9, and combustion air stomata 10 is three from air classification
The ramp way drawn on channel 9, for 10 joining distal ends of combustion air stomata in the radial sidewalls of first-stage firing chamber 7, three combustion-supporting
General mood hole 10 is circumferentially distributed, and longitudinal center line extension converges on the horizontal axis of first-stage firing chamber 7, and crosspoint is located at level-one
In combustion chamber 7, level-one fuel gas hole 8 and 10 interlaced arrangement of combustion air stomata, make combustion gas and combustion air and combustion chamber in effectively
Mixing.When work, combustion gas and air intersect mixing in first-stage firing chamber 7 and carry out single-stage combustion.Due to level-one fuel gas hole and combustion-supporting
General mood hole only there are three, and caliber is smaller, and the tolerance of combustion gas and air at this time is less, when being burnt flame temperature compared with
Low, the NOx of generation is also relatively fewer, while gas inlet combusted proportion is greater than the air inflow of air, the anoxycausis gas of formation
The synchronous production quantity for reducing NOx of atmosphere.
Secondary combustion chamber 11 and first-stage firing chamber 7 penetrate through, and secondary combustion chamber 11 is greater than the internal diameter of first-stage firing chamber 7, and two
It is provided on the end face of grade combustion chamber 11 12,8,8 eddy flow stomatas drawn from air classification channel 9 eddy flow stomata 12 weeks
To the outside that first-stage firing chamber 7 is arranged in.Eddy flow stomata 12 be obliquely installed it is cylindric, it is circumferential along secondary combustion chamber 11 center
The acute angle of distribution, eddy flow stomata 12 and tangent to periphery angular separation is 30 °.In specific works, partial air passes through 8 eddy flows
Enter secondary combustion chamber 11 in eddy flow state after stomata 12, and forces rotation to generate vortex volume in secondary combustion chamber 11 and inhale effect
Fruit, the external margin of eddy flow constitute the spiral-flow impact of strength, generate negative pressure at the center of eddy flow, the negative pressure at the eddy flow center can have
Effect attracts the flue gas generated from first-stage firing chamber 7 and unburned combustion gas, so that mixed gas is constituted volume and is sucked back and turns air-flow, the air-flow
Inside it is mingled with air, flue gas and combustion gas, and burns again under the flame that first-stage firing chamber 7 ejects, simultaneously as rotation
A large amount of Cryogenic airs (comparing the ignition temperature in secondary firing room) that gas hole introduces, reduce in secondary combustion chamber 11
Ignition temperature thereby reduces the production quantity of NOx.
New combustion gas is not filled into secondary combustion chamber 11, the periphery of secondary combustion chamber 11 is circumferential to be provided with 8 from combustion
The longitudinal center line in 15, the 8 second gas burning holes 15 in second gas burning hole that gas classification 6 end of channel is drawn converges in secondary combustion chamber
On 11 horizontal axis.Specifically, the downstream of secondary combustion chamber 11 connects with the burner hearth of industrial furnace, and second gas burning hole 15 tilts
The acute angle of setting, extending direction and horizontal direction angle is 30 °, and joining distal ends fill into combustion gas on the air inlet end face of burner hearth
Into the burning for carrying out next stage in burner hearth, the longitudinal center line in secondary firing hole finally converges in the horizontal center line of burner hearth
On.First-stage firing chamber 7, secondary combustion chamber 11 are arranged concentrically with burner hearth, constitute the three-level of combustion gas and air inside burner hearth
Burning.Pass through this kind of set-up mode, it is ensured that the smoothness that combustion gas is filled into air mixes combustion gas and air in burner hearth
It is more uniform, finally in burner hearth constitute combustion gas multistage combustion.During each fractional combustion, due to what is gradually filled into
Extraneous gas, including the combustion gas entered in first-stage firing chamber 7 and air, the rotational flow air filled into secondary combustion chamber 11, and
The combustion gas filled into burner hearth is to be classified in channel 6 and air classification channel 9 to be passed through from combustion gas, the combustion in classification channel
Gas and air only absorb the heat of heat storage 5, and there is no burning is participated in, temperature is lower, and after being passed through combustion chamber, can reduce
Ignition temperature under corresponding combustion state；In every first-stage firing chamber, by circumferential or symmetrically uniformly distributed inlet channel, is formed and divided
Burning is dissipated, mixes with air combustion gas more uniform；In addition, during the integral combustion of burner, gas inlet ratio of combustion
Example is greater than the air inflow of air, and a secondary firing is made to be in anoxycausis state always.In conjunction with three above angle, it is towards
The generation for advantageously reducing NOx carries out, meanwhile, combustion gas is fully able to meet country in the diversified combustion state of different stage
Levels of emissions requirement of the environmental protection for NOx in flue gas.
In the present invention, one group of flue gas recirculation channel 13, one end of the channel and air point are provided on air classification channel 9
Grade channel 9 is connected, and the other end is connected by valve 14 with the smoke explorer of combustion system.When work, the flue gas of discharge is through air inducing
In machine forced refluence to flue gas recirculation channel 13, the valve 14 by adjusting smoke backflow amount enters air classification channel 9, from
And the circulating combustion again of flue gas is carried out, reduce the NOx in flue gas again.Of course for recycle efficiency is guaranteed, in addition to adopting
With one group, can also according to specific actual setting two or more sets, every group of recirculation line is independently arranged valve control.
Burner in the present embodiment further includes shell 1, and air heat storage tank 3 and regenerator gas case 2 are mounted on inside shell 1,
It is filled with heat preservation rock 4 between shell 1 and heat storage tank, reduces the loss of heat, improves the accumulation of heat effect of heat storage tank.It is storing
In hot tank, it is provided with by multiple honeycomb heat accumulation bodies 5, to absorb the heat of flue gas, combustion gas and air is preheated, combustion is saved
Material consumption, to realize the Optimum utilization of the energy.
A kind of heat accumulating type flue gas recirculation combustion system is additionally provided in the present invention, above-mentioned burner is symmetrically mounted on burner hearth
Two sides.When specific works, two burners open a state closed for one, and the flue gas generated in burner hearth enters closed state by pipeline
Burner in, high-temperature flue gas transfers heat to heat storage 5 when by burner heat storage tank, is discharged eventually by smoke explorer.
By heat accumulating type flue gas recirculation combustion system, it can be achieved that multistage combustion, and temperature when combustion gas and air burning is reduced, had
Effect reduces the emission level of NOx.Meanwhile by the oxygen content in monitoring burner hearth inside smoke, combustion gas and air are adjusted in real time
Air inflow.
Embodiment 2
Structure in the present embodiment is substantially the same manner as Example 1, the difference is that, eddy flow stomata and tangent to periphery angular separation
Acute angle be 60 °, the acute angle of second gas burning hole and horizontal direction angle is 45 °, and eddy flow stomata and second gas burning hole are square column hole,
Multiple heat-storing spheres are provided in heat storage tank.
Design philosophy according to the present invention, in addition to above-mentioned structure, the tilt angle in eddy flow stomata and second gas burning hole is also
It can be according to being actually adjusted；It can be also made of multiple honeycomb heat accumulation bodies and heat-storing sphere mixing in heat storage tank；In addition, level-one combustion gas
Hole, combustion air stomata, eddy flow stomata and second gas burning hole quantity can be also adjusted according to specific combustion conditions；Level-one
Fuel gas hole and combustion air stomata, eddy flow stomata and the quantity in second gas burning hole may be the same or different, not merely limits to
Quantity in above-described embodiment etc., this be also those skilled in the art's design concept according to the present invention can make it is normal
Rule judgement, repeats no more.
Finally, it will be appreciated that the principle that embodiment of above is intended to be merely illustrative of the present and the example that uses
Property embodiment, however the present invention is not limited thereto.For those of ordinary skills, do not depart from it is of the invention
In the case where principle and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection model of the invention
It encloses.
Claims (10)
1. a kind of heat accumulating type flue gas recirculation burner, which is characterized in that the combustion chamber including heat storage tank and at least two-stage, combustion gas and
Air enters the combustion chamber after being each passed through the heat storage tank；Combustion gas point is provided between the heat storage tank and the combustion chamber
Grade channel and air classification channel；Several groups flue gas recirculation channel is connected on the air classification channel, will burn
The flue gas generated afterwards is further passed through burning in burner.
2. burner as described in claim 1, which is characterized in that the heat storage tank includes regenerator gas case and air heat storage tank,
Combustion gas is classified channel into the combustion gas by flowing through blast tube after the regenerator gas case, and air passes through the air accumulation of heat
Sky exhaust gases passes are flowed through after case into the air classification channel.
3. burner as described in claim 1, which is characterized in that the combustion chamber includes first-stage firing chamber and secondary combustion chamber,
Several level-one fuel gas holes drawn from combustion gas classification channel are provided on the air inlet end face of the first-stage firing chamber, one
Several combustion air stomatas drawn from the air classification channel, Duo Gesuo are tiltedly installed in the radial sidewalls of grade combustion chamber
The longitudinal center line for stating combustion air stomata converges on the horizontal axis of first-stage firing chamber.
4. burner as claimed in claim 3, the first-stage firing chamber and the secondary combustion chamber penetrate through, the secondary combustion chamber
Air inlet end face on be provided with several eddy flow stomatas drawn from the air classification channel, multiple eddy flow stomatas weeks
To the outside that the first-stage firing chamber is arranged in.
5. burner as claimed in claim 4, which is characterized in that the eddy flow stomata is the multiple column stomatas being obliquely installed,
Eddy flow stomata and the acute angle of tangent to periphery angular separation are 30-60 °.
6. burner as claimed in claim 3, which is characterized in that the periphery of the secondary combustion chamber is circumferential be provided with several from
The second gas burning hole that combustion gas classification channel is drawn, the longitudinal center line in multiple second gas burning holes converge in secondary firing
On the horizontal axis of room.
7. burner as claimed in claim 6, which is characterized in that the secondary combustion chamber connects with the burner hearth of industrial furnace, described
Second gas burning hole tilts the air inlet end face for extending to the burner hearth, and the second gas burning hole and the acute angle of horizontal direction angle are
30-45°。
8. burner as described in claim 1, which is characterized in that the air classification channel is to fire circumferentially around in the level-one
Burn the outdoor annular housing enclosed.
9. burner as described in claim 1, which is characterized in that the input end in the flue gas recirculation channel is provided with control cigarette
The valve of gas reflux.
10. a kind of heat accumulating type flue gas recirculation combustion system, the claim 1- including being symmetrically mounted on industrial furnace burner hearth two sides
Burner described in any one of 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549652.3A CN110332522B (en) | 2019-06-24 | 2019-06-24 | Heat accumulating type flue gas recirculation burner and combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549652.3A CN110332522B (en) | 2019-06-24 | 2019-06-24 | Heat accumulating type flue gas recirculation burner and combustion system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110332522A true CN110332522A (en) | 2019-10-15 |
| CN110332522B CN110332522B (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910549652.3A Expired - Fee Related CN110332522B (en) | 2019-06-24 | 2019-06-24 | Heat accumulating type flue gas recirculation burner and combustion system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052894A (en) * | 2001-12-21 | 2003-06-27 | 재단법인 포항산업과학연구원 | VENTURI TYPE LOW NOx BURNER |
| CN101936530A (en) * | 2010-09-29 | 2011-01-05 | 中国石油化工股份有限公司 | Multi-point combustion long-flame gas burner with ultralow nitrogen oxide (NOx) emission |
| CN203147763U (en) * | 2013-03-22 | 2013-08-21 | 湖南吉祥石化科技股份有限公司 | Multi-stage fuel flat wall-attached low-NOX-gas flame burner |
| CN103363811A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Combustion method for mixing oxygen into high-temperature flue gas |
| CN104791777A (en) * | 2015-04-09 | 2015-07-22 | 上海嘉德环境能源科技有限公司 | Combustion method for reducing NOx by adopting self-circulation of flue gas |
| CN106224960A (en) * | 2016-07-27 | 2016-12-14 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat accumulation type radiant tube gradual combustor and combustion method thereof |
| CN206055625U (en) * | 2016-07-27 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat accumulation type radiant tube gradual combustor |
| CN107842853A (en) * | 2017-11-26 | 2018-03-27 | 湖北满天星节能环保科技有限公司 | Universal double purified nonflame energy-saving burner |
| CN210462995U (en) * | 2019-06-24 | 2020-05-05 | 秦皇岛鸿泰科技股份有限公司 | Heat accumulating type flue gas recirculation burner and combustion system |
-
2019
- 2019-06-24 CN CN201910549652.3A patent/CN110332522B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052894A (en) * | 2001-12-21 | 2003-06-27 | 재단법인 포항산업과학연구원 | VENTURI TYPE LOW NOx BURNER |
| CN101936530A (en) * | 2010-09-29 | 2011-01-05 | 中国石油化工股份有限公司 | Multi-point combustion long-flame gas burner with ultralow nitrogen oxide (NOx) emission |
| CN103363811A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Combustion method for mixing oxygen into high-temperature flue gas |
| CN203147763U (en) * | 2013-03-22 | 2013-08-21 | 湖南吉祥石化科技股份有限公司 | Multi-stage fuel flat wall-attached low-NOX-gas flame burner |
| CN104791777A (en) * | 2015-04-09 | 2015-07-22 | 上海嘉德环境能源科技有限公司 | Combustion method for reducing NOx by adopting self-circulation of flue gas |
| CN106224960A (en) * | 2016-07-27 | 2016-12-14 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat accumulation type radiant tube gradual combustor and combustion method thereof |
| CN206055625U (en) * | 2016-07-27 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat accumulation type radiant tube gradual combustor |
| CN107842853A (en) * | 2017-11-26 | 2018-03-27 | 湖北满天星节能环保科技有限公司 | Universal double purified nonflame energy-saving burner |
| CN210462995U (en) * | 2019-06-24 | 2020-05-05 | 秦皇岛鸿泰科技股份有限公司 | Heat accumulating type flue gas recirculation burner and combustion system |
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| CN110332522B (en) | 2021-05-07 |
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