CN106090906A - The blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow - Google Patents
The blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow Download PDFInfo
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- CN106090906A CN106090906A CN201610740973.8A CN201610740973A CN106090906A CN 106090906 A CN106090906 A CN 106090906A CN 201610740973 A CN201610740973 A CN 201610740973A CN 106090906 A CN106090906 A CN 106090906A
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- Prior art keywords
- backflow
- burner
- flue gas
- air
- blower fan
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- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 238000005516 engineering process Methods 0.000 title claims abstract description 27
- 238000010790 dilution Methods 0.000 title claims abstract description 15
- 239000012895 dilution Substances 0.000 title claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003546 flue gas Substances 0.000 claims abstract description 74
- 238000002156 mixing Methods 0.000 claims abstract description 30
- 239000011449 brick Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000000779 smoke Substances 0.000 claims abstract description 27
- 238000005338 heat storage Methods 0.000 claims abstract description 16
- 239000002737 fuel gas Substances 0.000 claims abstract description 15
- 239000003517 fume Substances 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims description 45
- 239000000567 combustion gas Substances 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 10
- 238000000825 ultraviolet detection Methods 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- 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
- F23D14/60—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
- F23D14/66—Preheating the combustion air or gas
-
- 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
A kind of blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow, the aerial burner shell of heat storage it is provided with in including, air-fuel mixing head, it is arranged on the air scoop of burner shell front end, bake bricks, Gas Pipe, igniter burner, the first combustor it is provided with in air-fuel mixing head, one end of Gas Pipe arranges and is communicated to the first combustor, the other end is fuel gas inlet, igniter burner is communicated to the first combustor, the most also include the house steward that discharges fume, backflow flue gas pipe, backflow flue gas inner tube, backflow flue gas inner tube is socketed in the surface of Gas Pipe, the end of backflow flue gas pipe connects with backflow flue gas inner tube, smoke evacuation house steward, connected by connecting tube between backflow flue gas pipe, backflow blower fan it is provided with at connecting tube, one end of smoke evacuation house steward is connected with air scoop, the other end of smoke evacuation house steward is connected with smoke evacuation chimney.Smoke backflow is diluted the concentration of fuel by the present invention by backflow blower fan, reduces the calorific value of fuel, thus directly reduces the ignition temperature of flame, reaches ultra-low NOx emission amount.
Description
Technical field
The present invention relates to heat-accumulating burner technical field, espespecially a kind of blower fan ultralow NOx fuel dilution technology accumulation of heat of backflow
Formula burner.
Background technology
Just applied as far back as 19th-century regenerative combustion technology in mid-term, but owing to its regenerator area occupied is big,
Commutating period is long, operation complexity, is gradually substituted by other combustion technologies.Until the 1980s, heat storage small-sized
Change and commutating period shortens, just make regenerative combustion technology obtain certain development.At present, due to world energy sources shortage with
And the energy is non-renewable, in order to save the energy and reduce production cost, in heat treatment heating furnace, heat storage type combustion skill
Art obtains promotion and application widely.Its operation principle of regenerative combustion technology is: heat-accumulating burner is arranged in pairs, and utilizes accumulation of heat
Body makees carrier, is alternately heated by waste-gas heat, then the heat stored by heat storage is used for adding hot-air or combustion gas, heat storage week
The heating of phase property ground, heat release make air or gas-preheating to high temperature, not only ensure that seriality that burner hearth heats but also have reached energy-conservation effect
Really.But owing to heat storage is by after combustion air or gas heating to high temperature, and along with combustion air or gas-preheating temperature
Significantly rising, flame combustion temperature also can raise so that in combustion process produce NOx exponentially rise also, it is right to exacerbate
The pollution that atmospheric environment causes.
Conventional flue gas recirculation technology typically have employed the mode inside by flue gas recirculation to combustion air, but owing to storing
Hot type burner exhaust gas temperature is relatively low, typically at 150-200 DEG C, in flue gas recirculation to combustion air after reuptake heat storage again
Heat, can greatly reduce the energy-saving effect of regenerative combustion technology, and flue gas recirculation is to the flue gas in combustion air mode
Circulating load have to the biggest effect that just can reduce NOx so that circulating fan cost steeply rises.
Combustion air classification needed for burning is fed by air staged combustion technology, reduces the air in single-stage combustion region
Coefficient of excess, makes fuel burn under anaerobic condition, can retarded combustion speed effectively, reduce flame combustion temperature, from
And inhibit the generation of thermal NO x.Domestic industry stove environmental emission standard is that the discharge capacity of NOx is when 8% oxygen content at present
Less than 150ppm.
The most how to reduce NOx emission in heat-accumulating burner combustion process, and by smoke backflow technology, air classification combustion
Burning technology, combustion gas grading combustion technology combine with regenerative combustion technology, and the heat accumulating type producing ultra-low NOx emission burns
Mouth becomes the development trend that industrial combustion equipment is following.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow, logical
Cross backflow blower fan the partial fume extraction of burning generation to be back in fuel, utilize the flue gas that cannot burn to dilute fuel
Concentration, reduces the calorific value of fuel, thus directly reduces the ignition temperature of flame, the formation of suppression NOx, greatly reduces burned
The NOx formed due to thermal-flame in journey, can effectively improve efficiency of utilization.
For achieving the above object, the technical solution used in the present invention is: a kind of blower fan ultralow NOx fuel dilution technology of backflow
Heat-accumulating burner, including in be provided with the aerial burner shell of heat storage, be arranged in burner shell tail end with burner shell even
Logical air-fuel mixing head, it is arranged on the air scoop of burner shell front end, is arranged on outside air-fuel mixing head and mixes with air-fuel
Head connection bake bricks, Gas Pipe, igniter burner, be provided with the first combustor in air-fuel mixing head, one end of Gas Pipe is arranged on
Burner shell is interior and is communicated to the first combustor, and the other end is fuel gas inlet and is arranged on outside burner shell, and igniter burner connects
To the first combustor, the most also including discharge fume house steward, backflow flue gas pipe, backflow flue gas inner tube, backflow flue gas inner tube is socketed in
The surface of Gas Pipe, the end of backflow flue gas pipe connects with backflow flue gas inner tube, and smoke evacuation is passed through between house steward, backflow flue gas pipe to connect
Pipe connects, and is provided with backflow blower fan at connecting tube, and one end of smoke evacuation house steward is connected with air scoop, the other end of smoke evacuation house steward and row
Chimney connects.
The beneficial effects of the present invention is: the present invention is by arranging backflow flue gas pipe and by backflow blower fan and smoke evacuation house steward
Connect, be socketed with backflow flue gas inner tube simultaneously on Gas Pipe surface and be connected with backflow flue gas pipe, will smoke evacuation by backflow blower fan
The partial fume produced through burning in house steward extracts to backflow flue gas inner tube, after entering the first combustor together with combustion gas, combustion gas is dilute
Release, reduce the calorific value of fuel, thus directly reduce the ignition temperature of flame, the formation of suppression NOx, greatly reduces combustion process
In the NOx that formed due to thermal-flame, can effectively improve efficiency of utilization, reduce 80-90% than conventional heat-accumulating burner
NOx emission, when 3% oxygen content, the concentration of NOx is at below 50ppm, far below country flue gas in 8% oxygen content time NOx emission
The environmental emission standard of 150ppm, it is achieved the ultra-low volume discharge of NOx, the one end of the house steward that wherein discharges fume is connected with air scoop so that
The flue gas discharged from air scoop after burning enters smoke evacuation house steward's other end of smoke evacuation house steward process and discharges from smoke evacuation chimney.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is operation principle schematic diagram of the present invention；
Fig. 3 is mixing wind dish and backflow flue gas inner tube, Gas Pipe connection diagram；
Fig. 4 is the structural representation of mixing wind dish；
Fig. 5 is UV detection head and the structural representation of igniter burner；
Fig. 6 is the operation principle schematic diagram that the present invention uses flat flame to bake bricks；
Fig. 7 is that the present invention uses the uncovered operation principle schematic diagram baked bricks.
Drawing reference numeral illustrates: 1-burner shell；11-heat storage；12-air-fuel mixing head；121-the first combustor；13-is empty
QI KOU；14-igniter burner；Air channel of 15-；16-secondary air duct；17-controls valve；18-UV detects head；19-heat-insulation layer；
20-thermal insulation layer；2-bakes bricks；21-the second combustor；22-tertiary air road；3-Gas Pipe；31-fuel gas inlet；41-discharges fume house steward；
42-backflow flue gas pipe；43-backflow flue gas inner tube；44-connecting tube；5-refluxes blower fan；6-mixing wind dish；61-slots；62-opens
Hole；7-burner hearth.
Detailed description of the invention
Referring to shown in Fig. 1-5, the present invention refluxes ultralow NOx fuel dilution technology heat-accumulating burner about a kind of blower fan,
Be provided with in including heat storage 11 aerial burner shell 1, be arranged on tail end in burner shell 1 and connect with burner shell 1
Air-fuel mixing head 12, it is arranged on the air scoop 13 of burner shell 1 front end, is arranged on outside air-fuel mixing head 12 and mixes with air-fuel
12 connections bake bricks 2, Gas Pipe 3, igniter burner 14, be provided with the first combustor 121, Gas Pipe 3 in air-fuel mixing head 12
One end be arranged on burner shell 1 in and be communicated to the first combustor 121, the other end is fuel gas inlet 31 and is arranged on burner shell
Outside body 1, igniter burner 14 is communicated to the first combustor 121, the most also includes discharge fume house steward 41, backflow flue gas pipe 42, backflow
Flue gas inner tube 43, backflow flue gas inner tube 43 is socketed in the surface of Gas Pipe 3, the end of backflow flue gas pipe 42 and backflow flue gas inner tube
43 connections, smoke evacuation is connected by connecting tube 44 between house steward 41, backflow flue gas pipe 42, is provided with backflow blower fan 5, row at connecting tube 44
One end of cigarette house steward 41 is connected with air scoop 13, and the other end of smoke evacuation house steward 41 is connected with smoke evacuation chimney.
Compared to existing technology, the present invention is by arranging backflow flue gas pipe 42 and by backflow blower fan 5 and smoke evacuation house steward
41 connect, and are socketed with backflow flue gas inner tube 43 simultaneously on Gas Pipe 3 surface and are connected with backflow flue gas pipe 42, by backflow blower fan
The partial fume that burning in smoke evacuation house steward 41 produces is extracted to backflow flue gas inner tube 43 by 5, enters the first combustor together with combustion gas
After 121, combustion gas is diluted, reduce the calorific value of fuel, thus directly reduce the ignition temperature of flame, the formation of suppression NOx, greatly
Ground reduces the NOx formed in combustion process due to thermal-flame, can effectively improve efficiency of utilization, than conventional heat accumulating type
Burner reduces the NOx emission of 80-90%, and when 3% oxygen content, the concentration of NOx is at below 50ppm, far below 8% oxygen in country's flue gas
The environmental emission standard of NOx emission 150ppm during content, it is achieved the ultra-low volume discharge of NOx.
As the embodiment that the present invention is more excellent, described in bake bricks be provided with in 2 second combustor 21 and with the first combustor 121
Connection, is provided with in burner shell 1 and is respectively communicated to the first combustor 121 and air channel 15, a secondary wind of the second combustor 21
Road 16, and bake bricks and be additionally provided with tertiary air road 22 in 2, the one end in described tertiary air road 22 is communicated to the connection of burner shell 1 other end
To burner hearth 7.
Use such scheme, by arranging air channel 15, a secondary air duct 16 in being arranged on burner shell 1 and being respectively communicated with
To first combustor the 121, second combustor 21 so that the combustion air entered from air scoop 13 realizes classification, a part of combustion-supporting
Air enters the first combustor 121 and combustion gas, backflow flue gas mixed combustion by an air channel 15, reduces after combustion air classification
The coefficient of excess air of the first combustor 121 so that fired state is anoxycausis, can effectively reduce flame temperature, reduces
NOx generates；The unburnt gas produced after primary combustion continues forward, and the combustion air entered with secondary air duct 16 mixes
After burn away, bake bricks 2 the second combustor 21 in formed second-time burning；The flame produced after second-time burning sprays through mouth brick 2
Enter in burner hearth 7, due to produce flame speed quickly, quick flame can roll up inhale partial fume, after second-time burning generation fire
Flame becomes three burnings with the flue gas that is drawn through of volume and with the combustion air led in 22 roads entrance stoves by tertiary air, is mixed into flue gas
During after-combustion, the concentration of oxygen reduces, and can effectively reduce flame combustion temperature, thus reduce the generation of NOx.
As the embodiment that the present invention is more excellent, also including mixing wind dish 6, described mixing wind dish 6 is arranged on backflow flue gas
Inner tube 43, Gas Pipe 3 and the connectivity part of the first combustor 121, wherein the outer of mixing wind dish 6 is evenly arranged with and backflow flue gas
Inner tube 43 is to being applied to the fluting 61 that confession backflow flue gas passes through, and the center of mixing wind dish 6 is evenly arranged with Gas Pipe 3 application
In the perforate 62 passed through for combustion gas.
Use such scheme, arranged by the connectivity part at backflow flue gas inner tube 43, Gas Pipe 3 and the first combustor 121
Mixing wind dish 6, the flue gas of backflow flue gas inner tube 43 is from fluting 61 process of mixing wind dish 6 outer, and combustion gas, from perforate 62 process, makes
Can flue gas and combustion gas mixing abundant, can effectively dilute gas concentration, reduce the calorific value of fuel, and after fuel dilution being made
Calorific value is more stable, thus reduces combustion flame temperature, greatly reduces the generation of NOx in combustion process.
As the embodiment that the present invention is more excellent, also include controlling valve 17, control system, UV detection 18, described control
Valve 17 processed is arranged at fuel gas inlet 31, air scoop 13, and the test side of described UV detection 18 is arranged on bakes bricks in 2, described
Igniter burner 14, control valve 17, UV detection 18, backflow blower fan 5 are connected with control system respectively.
Use such scheme, by arranging control valve 17 at fuel gas inlet 31, air scoop 13, and control system is set
It is connected with igniter burner 14, control valve 17, UV detection 18, backflow blower fan 5, air and combustion gas can be realized by control system
Air inflow control, the IGNITION CONTROL of igniter burner 14, backflow blower fan 5 control, and in actual use control two burning
The alternation of mouth, can realize the detection to burner flame by UV detection 18, detection signal is sent to control system, logical
Cross control system and control the corresponding chain control of valve 17 to other, it is ensured that burner safety in use.
As the embodiment that the present invention is more excellent, described burner shell 1 inwall is provided with heat-insulation layer 19, described heat storage 11
It is fixedly installed in heat-insulation layer 19.
Use such scheme, by being provided with heat-insulation layer 19 at burner shell 1 inwall, can shed effectively preventing heat,
Improve heat insulating ability.
As the embodiment that the present invention is more excellent, described in the surface of backflow flue gas inner tube 43 that is arranged in burner shell 1
It is arranged with thermal insulation layer 20.
Use such scheme, be arranged with thermal insulation layer 20 by the surface of backflow flue gas inner tube 43, in backflow flue gas can being prevented
Pipe 43 burns out when high temperature.
Further, different types of baking bricks can be set according to specific needs, specifically include reducing bake bricks, uncovered burning
Brick, flat flame are baked bricks；Wherein reducing interior second combustor 21 of baking bricks is tapered structure, by the of tapered structure after fuel gas buring
Produce high-speed flame after two combustor 21, the flue gas participation burning inhaled around can be rolled up, flame temperature can be effectively reduced, enter one
The discharge of the reduction NOx of step；The most uncovered the second combustor 21 baked bricks in (as shown in Figure 7) is for being the widest structure and cross section width
Degree is more than the cross-sectional width of the first combustor 121, and after fuel gas buring, the second combustor 21 at the widest interface forms diffusion combustion,
Owing to flame speed is relatively slow, fully, burning is violent, the rising furnace temperature that can be exceedingly fast, it is ensured that in stove, blank exists for combustion gas and air mixing
Rolling or forging temperature is reached in short time；The second combustor 21 that wherein flat flame was baked bricks in (as shown in Figure 6) is tubaeform spiral shell
Rotation structure, being not updraft but being close to the furnace wall disc flame to surrounding uniform extension of fuel combustion ejection, can be the biggest
Plane in cause uniform temperature field, and there is the strongest radianting capacity.
Below the specific works principle of the present invention is illustrated.
As in figure 2 it is shown, the present invention uses in pairs, it is arranged on the both sides of burner hearth with being respectively symmetrically and by baking bricks with burner hearth even
Logical, in the present embodiment, baking bricks 2 uses closed-entry and bakes bricks 2, and wherein the second combustor 21 is tapered structure.
1) combustion gas is entered by the fuel gas inlet 31 being positioned at left side, and now the control valve 17 at fuel gas inlet 31 is opened, position
Control valve 17 at the fuel gas inlet on right side is closed, and combustion gas, through controlling valve 17, enters Gas Pipe 3, and combustion gas is blended
The perforate 62 of wind dish 6 enters the primary zone 121 within air-fuel mixing head 12；
2) flue gas in smoke evacuation house steward 41 is extracted into backflow flue gas pipe 42 by backflow blower fan 5, enters and is positioned at left side backflow flue gas inner tube
43, the fluting 61 of flue gas blended wind dish 6 enters the primary zone 121 within air-fuel mixing head 12；
3) combustion air is entered by the air scoop 13 of the burner being positioned at left side, and combustion air is through the internal heat storage of burner shell 1
11 preheatings, now the combustion air after preheating enters the cavity within burner shell 1, and a part of combustion air passes through an air channel
15 enter the first combustor 121 mixes by igniter burner 14 ignition with combustion gas, backflow flue gas；A part passes through secondary wind
Road 16 enters in the second combustor 21；A part enters burner hearth 7 by tertiary air road 22；
4) unburnt gas produced after primary combustion continues forward, and combustion air enters from secondary air duct 16 and bakes bricks 2
It is mixed to form second-time burning with unburnt gas in second combustor 21；
5) flame produced after second-time burning 2 sprays in burner hearth 7 through baking bricks, the flame speed produced after second-time burning quickly, soon
The flame of speed can be rolled up suction partial fume flame and become three burnings with the combustion air entering in burner hearth 7 by tertiary air road 22；
6) combustion gas the flue gas produced after fully burning in burner hearth 7 flow burner hearth 7 in by the mouth brick 2 on the right side of being positioned at
And tertiary air road 22 enters the second combustor 21, then arriving air-fuel mixing head 12, part of smoke is through the first combustor 121
Entering an air channel 15, another part flue gas is pooled to be positioned at burner shell 1 internal cavity on right side through secondary air duct 16, so
The internal heat storage 11 of rear arrival burner shell 1, now high-temperature flue gas is by heat storage body 11, and high-temperature flue gas transfers heat to store
Becoming low-temperature flue gas after hot body 11, the low-temperature flue gas after heat exchange is expelled to the house steward that discharges fume, the burning of both sides from air scoop 13
Mouth alternation；
7) at fuel gas inlet 31, air scoop 13, connect control valve 17, and valve 17, igniter burner 14, UV detection will be controlled
18 are connected with control system, are set the cycle of burner hearth 7 both sides burner work, the such as work of left side burner by control system
Time, it is positioned at fuel gas inlet 31, the control valve 17 of air scoop 13 at the burner of left side and opens, be positioned at fuel gas inlet 31 at the burner of right side
Control valve 17 close, the control valve of air scoop 13 is opened, and it is total that flue gas is drained into smoke evacuation through air scoop 13 by the burner on right side
Pipe 41, after reaching the switching cycle set, the working method of two burners switches over, now the work of right side burner, left side burner
Smoke evacuation, UV detection simultaneously 18 is used for detecting flame, and UV detection signal is corresponding to the control mode that other controls valve 17
Chain, it is ensured that burner safety in use.
Embodiment of above is only to be described the preferred embodiment of the present invention, not enters the scope of the present invention
Row limits, on the premise of designing spirit without departing from the present invention, and this area ordinary skill technical staff technical side to the present invention
Various deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (7)
1. blower fan refluxes a ultralow NOx fuel dilution technology heat-accumulating burner, including in be provided with the aerial burner shell of heat storage
Body, be arranged on tail end in burner shell and connect with burner shell air-fuel mixing head, be arranged on the sky of burner shell front end
QI KOU, be arranged on outside air-fuel mixing head and connect with air-fuel mixing head bake bricks, Gas Pipe, igniter burner, air-fuel mixing head
Inside being provided with the first combustor, one end of Gas Pipe is arranged in burner shell and is communicated to the first combustor, and the other end is combustion
Gas entrance is also arranged on outside burner shell, and igniter burner is communicated to the first combustor, it is characterised in that also include discharge fume house steward,
Backflow flue gas pipe, backflow flue gas inner tube, backflow flue gas inner tube is socketed in the surface of Gas Pipe, the end of backflow flue gas pipe and backflow
Flue gas inner tube connects, and smoke evacuation is connected by connecting tube between house steward, backflow flue gas pipe, is provided with backflow blower fan at connecting tube, smoke evacuation
One end of house steward is connected with air scoop, and the other end of smoke evacuation house steward is connected with smoke evacuation chimney.
The blower fan the most according to claim 1 ultralow NOx fuel dilution technology heat-accumulating burner of backflow, it is characterised in that institute
State be provided with in baking bricks the second combustor and with the first combustion chamber, be provided with in burner shell be respectively communicated to the first combustor and
Air channel, a secondary air duct of the second combustor.
The blower fan the most according to claim 2 ultralow NOx fuel dilution technology heat-accumulating burner of backflow, it is characterised in that institute
Stating and be additionally provided with tertiary air road in baking bricks, the one end in described tertiary air road is communicated to the burner shell other end and is communicated to burner hearth.
The blower fan the most according to claim 1 ultralow NOx fuel dilution technology heat-accumulating burner of backflow, it is characterised in that also
Including mixing wind dish, described mixing wind dish is arranged on backflow flue gas inner tube, Gas Pipe and the connectivity part of the first combustor, wherein mixes
The outer closing wind dish is evenly arranged with backflow flue gas inner tube being applied to the fluting that confession backflow flue gas passes through, in mixing wind dish
The heart is evenly arranged with Gas Pipe being applied to the perforate that confession combustion gas is passed through.
The blower fan the most according to claim 1 ultralow NOx fuel dilution technology heat-accumulating burner of backflow, it is characterised in that also
Detecting head including control valve, control system, UV, described control valve is arranged at fuel gas inlet, air scoop, and described UV detects
In the test side of head is arranged on and bakes bricks, described igniter burner, control valve, UV detection head, backflow blower fan respectively with control system
Connect.
The blower fan the most according to claim 1 ultralow NOx fuel dilution technology heat-accumulating burner of backflow, it is characterised in that institute
Stating burner shell inwall and be provided with heat-insulation layer, described heat storage is fixedly installed in heat-insulation layer.
The blower fan the most according to claim 1 ultralow NOx fuel dilution technology heat-accumulating burner of backflow, it is characterised in that institute
The surface stating the backflow flue gas inner tube being arranged in burner shell is arranged with thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740973.8A CN106090906A (en) | 2016-08-26 | 2016-08-26 | The blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740973.8A CN106090906A (en) | 2016-08-26 | 2016-08-26 | The blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106090906A true CN106090906A (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610740973.8A Pending CN106090906A (en) | 2016-08-26 | 2016-08-26 | The blower fan ultralow NOx fuel dilution technology heat-accumulating burner of backflow |
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| CN (1) | CN106090906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539252A (en) * | 2018-12-28 | 2019-03-29 | 中冶京诚(扬州)冶金科技产业有限公司 | A kind of high velocity burner |
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| CN205957172U (en) * | 2016-08-26 | 2017-02-15 | 佛山市科皓燃烧设备制造有限公司 | Ultralow NOx fuel dilution of fan backward flow technique regenerative burner |
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| CN2890658Y (en) * | 2006-03-08 | 2007-04-18 | 顾向涛 | Digitized high-temperature low oxygen air pulse combustion device |
| US20090181333A1 (en) * | 2008-01-11 | 2009-07-16 | Feese James J | Three Stage Low NOx Burner System With Controlled Stage Air Separation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109539252A (en) * | 2018-12-28 | 2019-03-29 | 中冶京诚(扬州)冶金科技产业有限公司 | A kind of high velocity burner |
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