CN106051763A - Enhanced low nox burner - Google Patents
Enhanced low nox burner Download PDFInfo
- Publication number
- CN106051763A CN106051763A CN201610484796.1A CN201610484796A CN106051763A CN 106051763 A CN106051763 A CN 106051763A CN 201610484796 A CN201610484796 A CN 201610484796A CN 106051763 A CN106051763 A CN 106051763A
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- CN
- China
- Prior art keywords
- burner
- nozzles
- rifle
- low
- enhancement mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F23D14/60—Devices for simultaneous control of gas and combustion air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses an enhanced low NOx burner. The enhanced low NOx burner comprises an air inlet channel, the air inlet channel is fixedly connected to the middle-lower part of a burner shell, and a smoke mixing pipe communicates with the air inlet channel; a fire nozzle, a fire basket and a cyclone are fixedly arranged inside the burner shell from top to bottom; a pre-burning chamber is formed in the middle space defined by the fire nozzle, and a plurality of after-burning air holes are formed in a wall of the fire nozzle; a main gun sequentially penetrates through the bottom of the burner shell and the cyclone for extending into the fire basket; first auxiliary guns sequentially penetrate through the bottom of the burner shell and the wall of the fire nozzle for extending into the after-burning air holes, and second auxiliary guns sequentially penetrate through the bottom of the burner shell and the wall of the fire nozzle for extending to the outer edge of the top of the fire nozzle. According to the enhanced low NOx burner, the structure hierarchies are clear from staged supply of air to staged supply of fuel. By putting the enhanced low NOx burner into production, the emission of NOx can be reduced by 10 mg/m<3>, and the discharge temperature of a chimney can be lowered by about 10 DEG C.
Description
Technical field
The invention belongs to industrial burner technical field, be specifically related to the low NO of enhancement mode of a kind of energy-conserving and environment-protectiveXBurner.
Background technology
Along with the continuous enhancing of national team's air contaminant treatment dynamics, for NOXThe standard of discharge capacity is also improving constantly.
To this end, practitioners are actively using one's brains, from NO hardyXFormation mechanism sets out, and hinders NO by every meansXFormation condition.
The applicant's initial design a kind of burner with high efficiency (Application No. 201120100001.5), by combustion air distributor chamber, rotation
The stream parts such as device, afterburning air holes achieve the classification supply of air, change the aspect that fuel mixes with air, solve fuel
Problem produced by deflagrate, improves burn-off rate, thus the NO in flue gas after effectively reducing burningXContent.But this height
Effect burner still suffers from deficiency, through unremitting effort for many years, and a kind of increasing of the applicant's Curve guide impeller on the basis of original
The low NO of strong typeXBurner.
Summary of the invention
It is an object of the invention to propose a kind of energy-conserving and environment-protective, safely and efficiently enhancement mode NOXBurner.
For achieving the above object, the present invention realizes by the following technical solutions.A kind of enhancing proposed according to the present invention
The low NO of typeXBurner, including wind inlet channel 1, burner shell 2, mixes and converts fume pipe 3, cyclone 4, fire pot 5, nozzles 6, main rifle
7, the first auxiliary rifle 81 and the second auxiliary rifle 82, this wind inlet channel 1 is fixed in the middle and lower part of burner shell 2, this is mixed convert fume pipe 2 with
Wind inlet channel 1 connects；This burner shell 2 is internal is installed with nozzles 6, fire pot 5, cyclone 4 the most successively；These nozzles 6
The central space surrounded constitutes precombustion chamber 9, and the wall body of described nozzles 6 offers several afterburning air holes 10；This main rifle 7 is successively
Bottom burner shell 2, cyclone 4 extend in fire pot 5；This first auxiliary rifle 81 sequentially passes through bottom burner shell 2,
The wall body of nozzles 9 extend in afterburning air holes 10, and this second auxiliary rifle 82 sequentially passes through bottom burner shell 2, the wall body of nozzles 9
Reach at the outer rim of nozzles 9 top.
For achieving the above object, the present invention also uses techniques below measure to realize further.
The low NO of aforesaid enhancement modeXBurner, the bottom of described nozzles 9 wall body offers several afterburning air holes 10.
The low NO of aforesaid enhancement modeXBurner, described main rifle 7 is arranged along fire pot 5 centrage, is provided with at least 1.
The low NO of aforesaid enhancement modeXBurner, described first auxiliary rifle 81 is identical with the quantity of afterburning air holes 10.
The low NO of aforesaid enhancement modeXBurner, described first auxiliary rifle the 81, second auxiliary rifle 82 is designed with multiple, the most uniform
In the wall body of nozzles 9.
The low NO of aforesaid enhancement modeXBurner, the described mixed pipeline converting fume pipe 3 and industrial furnace smoke stack emission waste gas connects
Logical.
The low NO of aforesaid enhancement modeXBurner, described fire pot 5, nozzles 6 are cast by refractory brick.
The low NO of aforesaid enhancement modeXBurner, described nozzles 6 are circular or square.
By technique scheme, the low NO of enhancement mode that the present invention proposesXBurner is supplied to fuel from the classification of air
Classification supply, layer of structure is clearly demarcated.Furnace flame burns under oxygen lean conditions, suppresses NOXGenerate, flame column ejection at a high speed,
Making flare concentrate without diffusion, stop to lick boiler tube phenomenon and occur, the reflux cycle field energy of burner hearth flue gas enough reduces ignition temperature peak value,
Avoid coking in boiler tube hot-spot, pipe.Through putting into production, NOXDischarge capacity can reduce 10mg/m3, smoke stack emission temperature reduces about
10℃。
Described above is only the general introduction of technical solution of the present invention, in order to be able to better understand the technological means of the present invention, and
Can be practiced according to the content of description, and be to allow the above and other objects, features and advantages of the present invention can be brighter
Aobvious understandable, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
Fig. 1 is the low NO of one enhancement mode of the present inventionXThe generalized section of burner.
[main element symbol]
1: wind inlet channel
2: burner shell
3: mix and convert fume pipe
4: cyclone
5: fire pot
6: nozzles
7: main rifle
81: the first auxiliary auxiliary rifles of rifle 82: the second
9: precombustion chamber
10: afterburning air holes
11: drop-bottom
A: air
B: flue gas
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention, below in conjunction with
Accompanying drawing and preferred embodiment, the low NO of enhancement mode that the present invention is proposedXIts detailed description of the invention of burner, structure, feature and
Effect, after describing in detail such as.
Refer to Fig. 1, the low NO of enhancement mode that the present invention proposesXBurner, including wind inlet channel 1, burner shell 2, mixes
Converting fume pipe 3, cyclone 4, fire pot 5, nozzles 6, main rifle the 7, first auxiliary rifle 81 and the second auxiliary rifle 82, wind inlet channel 1 is fixed in combustion
The middle and lower part of burner housing 2 side, mixed convert fume pipe 3 and is connected with wind inlet channel 1 tube wall；The inside of described burner shell 2
Being installed with cyclone 4, fire pot 5, nozzles 6, cyclone 4 is positioned at bottom fire pot 5, and fire pot 5 is positioned at below nozzles 6, and these nozzles 6 surround
Central space be precombustion chamber 9, the bottom of nozzles 6 wall body has afterburning air holes 10；Described main rifle 7 is bottom burner shell 2
Center reaches in fire pot 5 through cyclone 4；Described first auxiliary rifle 81 sequentially passes through bottom burner shell 2, nozzles 6 wall
Body reaches in afterburning air holes 10, and the second auxiliary rifle 82 sequentially passes through bottom burner shell 2, nozzles 6 wall body reaches outside nozzles 6 top
At edge.
It is also preferred that the left described first auxiliary rifle the 81, second auxiliary rifle 82 is respectively equipped with multiple, and it is distributed on respectively in nozzles 6 wall body,
But the invention is not restricted to this.
It is also preferred that the left described fire pot 5, nozzles 6 are cast by refractory brick, the external form of nozzles 6 is circular or square, and above-mentioned mixing converts cigarette
The diameter of trachea 3 determines according to the calculating of burner desirable load with diameter, the quantity of afterburning air holes 10.
The low NO of one enhancement mode of the present inventionXThe operation principle of burner is as follows:
When air A is after wind inlet channel 1 enters burner shell 2, the fuel that cyclone 4 of leading up to sprays with main rifle 7
Mixing, forms swirl-flow premixed combustion gas, reaches poor fuel oxygen-enriched combusting condition, and pre-mixing gas combustion burns in precombustion chamber 9, it is achieved air
Supply with the one-level of fuel；When flame is by differing heights in precombustion chamber 9, another road air passes through afterburning air holes 10 and first
After the fuel mixing of auxiliary rifle 81 ejection, join in flame and burn, it is achieved air and two grades of supplies of fuel；When flame from
During nozzles 6 at a high speed ejection, form the strongest negative pressure field at nozzle, the flue gas in the fuel of the second auxiliary rifle 82 and furnace simultaneously
Sucking wherein, fuel burns under oxygen lean conditions, it is achieved three grades of supplies of fuel.
Flue gas in burner hearth, under flame column drives, forms a smoke backflow cyclical field, flue gas heat release in burner hearth
And endothermic process, flue gas radiant heat transfer to boiler tube can be significantly increased, make full use of the transmitting of gas radiation energy and absorb energy
The feature carried out in whole gas volume, the radiant heat transfer of three atomic gas and improve spoke in high-temperature flue gas in strengthening radiation chamber
Penetrate room temperature field distribution, improve boiler tube calorific intensity uniformity, and effectively suppress NOXGeneration, thus reach improve heating furnace heat
Load and thermal efficiency purpose, improve burn-off rate and save fuel, reduce NO in flue gasXDischarge capacity, it is achieved the target of energy-conserving and environment-protective.
Above-mentioned mixed convert flue gas B that fume pipe 3 enters from industrial furnace smoke stack emission waste gas out, utilize the external impetus will
It introduces wind inlet channel 1, and external flue gas flow is controlled.Through putting into production, when external flue gas flow is zero, introduce without mixed flue gas of converting
Time, the present invention can make NOXContent is up to standard；And external the mixed of flue gas is converted, and can make NOXContent is lower, because external flue gas is mixed
Converting, first make the volume flow in wind inlet channel 1 increase, oxygen content ratio reduces, and combustion intensity weakens, in precombustion chamber 9
Peak flame temperature reduces, and generates NOXCondition be suppressed, the secondly increase of wind inlet channel 1 inner volume flow so that flame
Higher from the speed of nozzles 6 ejection, in burner hearth, the power of flue gas recirculation flowing is higher, and oxygen content ratio reduces further, burner hearth
Peak flame temperature reduces the most further, generates NOXCondition be again suppressed；Increasing of last flame column speed so that
Flare is more concentrated without diffusion, has stopped to lick in boiler tube, boiler tube hot-spot, boiler tube the accidents such as coking and has occurred, and boiler tube safety is the most more
Secure.
The above, be only presently preferred embodiments of the present invention, any those skilled in the art, without departing from
In the range of technical solution of the present invention, the technical spirit of the foundation present invention is to any simple modification made for any of the above embodiments, equivalent
Change and modification, all still fall within the range of technical solution of the present invention.
Claims (8)
1. the low NO of enhancement modeXBurner, including wind inlet channel (1), burner shell (2), mixes and converts fume pipe (3), cyclone
(4), fire pot (5), nozzles (6), main rifle (7), the first auxiliary rifle (81) and the second auxiliary rifle (82), this wind inlet channel (1) is fixed in combustion
The middle and lower part of burner housing (2), it is characterised in that: this is mixed converts fume pipe (2) and connects with wind inlet channel (1)；This burner shell
(2) inside is installed with nozzles (6), fire pot (5), cyclone (4) the most successively；The central space structure that these nozzles (6) surround
Become precombustion chamber (9), the wall body of described nozzles (6) offers several afterburning air holes (10)；This main rifle (7) sequentially passes through burning
Device housing (2) bottom, cyclone (4) extend in fire pot (5)；This first auxiliary rifle (81) sequentially passes through burner shell (2) end
Portion, the wall body of nozzles (9) extend in afterburning air holes (10), this second auxiliary rifle (82) sequentially pass through burner shell (2) bottom,
The wall body of nozzles (9) reaches at the outer rim of nozzles (9) top.
The low NO of enhancement mode the most according to claim 1XBurner, it is characterised in that: the bottom of described nozzles (9) wall body is opened
It is provided with several afterburning air holes (10).
The low NO of enhancement mode the most according to claim 1XBurner, it is characterised in that: described main rifle (7) is along fire pot (5) center
Line is arranged, is provided with at least 1.
The low NO of enhancement mode the most according to claim 1 and 2XBurner, it is characterised in that: described first auxiliary rifle (81) and benefit
The quantity of combustion air holes (10) is identical.
The low NO of enhancement mode the most according to claim 1XBurner, it is characterised in that: described first auxiliary rifle (81), second auxiliary
Rifle (82) is designed with multiple, is distributed on respectively in the wall body of nozzles (9).
The low NO of enhancement mode the most according to claim 1XBurner, it is characterised in that: described mixed fume pipe (3) of converting is with industrial
The pipeline communication of stove smoke stack emission waste gas.
The low NO of enhancement mode the most according to claim 1XBurner, it is characterised in that: described fire pot (5), nozzles (6) are by resistance to
Firebrick is cast.
8. according to the low NO of the enhancement mode described in claim 1 or 7XBurner, it is characterised in that: described nozzles (6) are circular or side
Shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484796.1A CN106051763B (en) | 2016-06-24 | 2016-06-24 | Enhanced low NOxBurner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484796.1A CN106051763B (en) | 2016-06-24 | 2016-06-24 | Enhanced low NOxBurner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106051763A true CN106051763A (en) | 2016-10-26 |
| CN106051763B CN106051763B (en) | 2018-08-14 |
Family
ID=57166768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610484796.1A Expired - Fee Related CN106051763B (en) | 2016-06-24 | 2016-06-24 | Enhanced low NOxBurner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106051763B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190319A (en) * | 1993-12-06 | 1995-07-28 | Bloom Eng Co Inc | Air multistage supply type burner and its combustion method |
| CN2422532Y (en) * | 2000-05-08 | 2001-03-07 | 湖南吉祥燃烧器股份有限公司 | Low Nox, low noise environmental protection burner |
| CN101706103A (en) * | 2009-12-11 | 2010-05-12 | 北京工业大学 | Efficient and energy-saving environment-friendly high-pressure burner |
| CN202125949U (en) * | 2011-04-06 | 2012-01-25 | 洛阳乐邦石化设备有限公司 | Efficient combustor |
| CN205299519U (en) * | 2015-12-29 | 2016-06-08 | 岳阳钟鼎热工电磁科技有限公司 | Low NOx of flat flame of long fire pan discharges gas burner |
-
2016
- 2016-06-24 CN CN201610484796.1A patent/CN106051763B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190319A (en) * | 1993-12-06 | 1995-07-28 | Bloom Eng Co Inc | Air multistage supply type burner and its combustion method |
| CN2422532Y (en) * | 2000-05-08 | 2001-03-07 | 湖南吉祥燃烧器股份有限公司 | Low Nox, low noise environmental protection burner |
| CN101706103A (en) * | 2009-12-11 | 2010-05-12 | 北京工业大学 | Efficient and energy-saving environment-friendly high-pressure burner |
| CN202125949U (en) * | 2011-04-06 | 2012-01-25 | 洛阳乐邦石化设备有限公司 | Efficient combustor |
| CN205299519U (en) * | 2015-12-29 | 2016-06-08 | 岳阳钟鼎热工电磁科技有限公司 | Low NOx of flat flame of long fire pan discharges gas burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106051763B (en) | 2018-08-14 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20180814 Termination date: 20200624 |