CN207893756U - A kind of flue gas is interior to recycle ultra-low NOx emission gas burner - Google Patents
A kind of flue gas is interior to recycle ultra-low NOx emission gas burner Download PDFInfo
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- CN207893756U CN207893756U CN201820250797.4U CN201820250797U CN207893756U CN 207893756 U CN207893756 U CN 207893756U CN 201820250797 U CN201820250797 U CN 201820250797U CN 207893756 U CN207893756 U CN 207893756U
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- gas
- flue gas
- brazier brick
- low nox
- ultra
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- 239000007789 gas Substances 0.000 title claims abstract description 62
- 239000003546 flue gas Substances 0.000 title claims abstract description 61
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000011449 brick Substances 0.000 claims abstract description 81
- 239000007921 spray Substances 0.000 claims abstract description 30
- 239000000567 combustion gas Substances 0.000 claims abstract description 23
- 239000003517 fume Substances 0.000 claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 abstract description 28
- 238000005516 engineering process Methods 0.000 abstract description 14
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- -1 burner brazier brick Chemical compound 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Abstract
The utility model discloses ultra-low NOx emission gas burner is recycled in a kind of flue gas, including burner brazier brick, it is provided with several gas guns on the inside of brazier brick, the top of the nozzle of gas gun is equipped with the first spray orifice, brazier brick inner wall is sprayed to by the fuel of the first spray orifice, the side of the nozzle of gas gun is equipped with the second spray orifice, brazier brick side wall is equipped with and the matched through-hole of the second spray orifice, brazier brick lateral wall is equipped with combustion gas guide housing, brazier brick center is equipped with flue gas ejection system, flue gas ejection system includes the fume pipe for intersecting connection, flue gas tube hub is equipped with inner nozzle, inner nozzle upper end is connected with Venturi tube, inner nozzle lower end and secondary combustion-supporting air communication, primary air leads in brazier brick.It is classified combustion gas recirculation volume in the stove of primary Proportionality design, flexible adjusting control, secondary combustion-supporting air and its injection by rational fuel gas, the combination application of a variety of low NOx combusting technologies is realized, to achieve the purpose that ultra-low NOx emission.
Description
Technical field
The utility model is related to technical field of burner, it particularly relates to cycle ultra-low NOx emission combustion in a kind of flue gas
Air burner.
Background technology
With the raising of environmental requirement, in order to reach the requirement of national environmental standard, in petrochemical heating furnace and boiler
With burner apparatus, low NOx combusting technology, including fuel-staged combustion, deep or light combustion are all made of in order to reduce NOx concentration in flue gas
It burns, fuel fires again, flue gas recirculation etc..Flue gas recirculation combustion technology therein is that chimney smoke is passed through exterior tube pass
In a part to burner hearth, either blending is in combustion air or blending is in fuel gas, and participating in burning by burner enters
Burner hearth, this smoke backflow recycle burning technology mainly reduce flame temperature using flue gas so that combustion flame temperature drops
It is low, inhibit thermal NO x largely to generate, reaches low NOx drainage purpose.Since flue gas recycle burning technology needs outside existing stove
Gas bypass pipeline to be established, needs to increase the equipment such as high-temperature flue gas air-introduced machine, regulating valve, controller, investment improvement cost is big,
It is mainly used in the low NOx transformations of boiler；And there are several disadvantages using external flue gas recirculation reburning technology, first, external
Flue gas, which introduces burner hearth, causes fire box temperature to reduce；Second, flue gas flow rate increases in burner hearth, change between burner hearth and heating surface
Heat distribution generates boiler efficiency certain influence；In addition, with the increase of amount of circulating gas, burning will become unstable.
By site planning and security restriction, at present temporarily without application on petroleum chemical heating furnace.
The existing discharge standard of country《Petroleum refining industry pollutant emission standard》（GB 31570-2015）Regulation：It is a kind of
Regional NOx emission requires to be less than 100mg/m3.The supplier of the domestic current high levels of petroleum chemical heating furnace burner can accomplish
About 60 mg/m3Discharge does not still use smoke backflow to recycle low NOx combusting technology.According to domestic and international data, work as cigarette
When gas recirculation volume reaches 10%, NOx emission reduces by 65%, therefore, flue gas recirculation low NOx combustion is used on petroleum chemical heating furnace
Technology, which further decreases NOx emission, certain space and market, significant in environmental protection cause.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Utility model content
For above-mentioned technical problem in the related technology, the utility model proposes recycle ultra-low NOx emission in a kind of flue gas
Gas burner can solve above-mentioned technical problem.
To realize the above-mentioned technical purpose, the technical solution of the utility model is realized in：
A kind of flue gas is interior to recycle ultra-low NOx emission gas burner, including burner brazier brick, is set on the inside of the brazier brick
Several gas guns are equipped with, the top of the nozzle of the gas gun is equipped with the first spray orifice, is sprayed to by the fuel of first spray orifice
The side of brazier brick inner wall, the nozzle of the gas gun is equipped with the second spray orifice, and the brazier brick side wall is equipped with and second spray
The matched through-hole in hole, the brazier brick lateral wall are equipped with combustion gas guide housing, and the brazier brick lateral wall is oriented to the combustion gas
Annular gap is formed between cover, and annular gap is sprayed to by the fuel of second spray orifice；The brazier brick center is equipped with flue gas
Ejection system, the flue gas ejection system include the fume pipe for intersecting connection, and the flue gas tube hub is equipped with inner nozzle, described
Inner nozzle upper end is connected with Venturi tube, and the inner nozzle is interconnected with the fume pipe, the external port of the fume pipe with
Connection on the inside of brazier brick, the inner nozzle lower end and secondary combustion-supporting air communication, primary air lead in brazier brick.
Further, the gas gun totally 4 and is uniformly distributed and is set on the inside of the brazier brick.
Further, circle is connected by side arc plate between the fume pipe.
Further, the primary air is connect by primary air pipeline with primary air butterfly valve,
The secondary combustion-supporting air is connect by secondary combustion-supporting air pipeline with secondary combustion-supporting air butterfly valve.
Further, altar lamp is equipped in the brazier brick, the altar lamp is connected to altar lamp gas pipeline.
Further, it is connected to by hose between the altar lamp and altar lamp gas pipeline, the hose and the length
Fire hole is equipped between bright lamp.
Further, it is connected with cylinder on the downside of the brazier brick, the cylinder inboard wall is provided with insulating layer, the insulating layer
Inside is provided with liner protection steel wire.
Further, the gas gun is connect by flange and bolt with cylinder.
Further, the input end of the gas gun is connect with annular drum pipe.
Further, the brazier brick is frustum cone structure.
The beneficial effects of the utility model：Combustion gas is divided into 2 grades by nozzle, passes through primary air and secondary combustion-supporting
Combustion air is divided into 2 grades by air butterfly valve etc., then, is returned using Venturi tube injection inner flue gas of the stove further through secondary combustion-supporting air
Flow recycle burning, and by rational fuel gas be classified Proportionality design, flexible adjusting control primary, secondary combustion-supporting air and
Combustion gas recirculation volume in the stove of its injection, realizes the combination application of a variety of low NOx combusting technologies, to reach ultralow NOx rows
The purpose put.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is that ultra-low NOx emission gas burner is recycled in a kind of flue gas according to the utility model embodiment
Sectional view；
Fig. 2 is that ultra-low NOx emission gas burner is recycled in a kind of flue gas according to the utility model embodiment
Vertical view；
Fig. 3 is that ultra-low NOx emission gas burner is recycled in a kind of flue gas according to the utility model embodiment
Combustion air inlet schematic diagram；
Fig. 4 is that ultra-low NOx emission gas burner is recycled in a kind of flue gas according to the utility model embodiment
The structural schematic diagram of flue gas ejection system；
Fig. 5 is that ultra-low NOx emission gas burner is recycled in a kind of flue gas according to the utility model embodiment
The three-dimensional cutaway view of brazier brick.
In figure：1. brazier brick；2. gas gun；3. combustion gas guide housing；4. flue gas ejection system；5. fume pipe；6. inner nozzle；
7. Venturi tube；8. side arc plate；9. primary air butterfly valve；10. secondary combustion-supporting air butterfly valve；11. altar lamp；12. soft
Pipe；13. fire hole；14 cylinders；15. peephole；16. main gas hose；17. secondary combustion-supporting air intake；18. once helping
Fire air intake；19. main fuel gas inlet；20. altar lamp fuel gas inlet；21. injection smoke inlet in stove.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, the every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the range of the utility model protection.
As shown in Figs. 1-5, ultra-low NOx emission combustion gas combustion is recycled in a kind of flue gas according to the utility model embodiment
Burner, including burner brazier brick 1,1 inside of the brazier brick are provided with several gas guns 2, the top of the nozzle of the gas gun 2
Portion is equipped with the first spray orifice, and 1 inner wall of brazier brick, the side of the nozzle of the gas gun 2 are sprayed to by the fuel of first spray orifice
Equipped with the second spray orifice, 1 side wall of the brazier brick is equipped with and the matched through-hole of the second spray orifice, 1 lateral wall of the brazier brick
Equipped with combustion gas guide housing 3, annular gap is formed between 1 lateral wall of the brazier brick and the combustion gas guide housing 3, by described
The fuel of two spray orifices sprays to annular gap；1 center of the brazier brick is equipped with flue gas ejection system 4, and the flue gas ejection system 4 wraps
The fume pipe 5 for intersecting connection is included, 5 center of the fume pipe is equipped with inner nozzle 6, and 6 upper end of the inner nozzle is connected with venturi
Pipe 7, the inner nozzle 6 are interconnected with the fume pipe 5, and the external port of the fume pipe 5 is connected to 1 inside of brazier brick, institute
6 lower end of inner nozzle and secondary combustion-supporting air communication are stated, primary air leads in brazier brick 1.
The gas gun 2 totally 4 and is uniformly distributed and is set to the inside of the brazier brick 1.
Circle is connected by side arc plate 8 between the fume pipe 5.
The primary air is connect by primary air pipeline with primary air butterfly valve 9, described secondary
Combustion air is connect by secondary combustion-supporting air pipeline with secondary combustion-supporting air butterfly valve 10.
Altar lamp 11 is equipped in the brazier brick 1, the altar lamp 11 is connected to altar lamp gas pipeline.
It is connected to by hose 12 between the altar lamp 11 and altar lamp gas pipeline, the hose 12 and the altar lamp
Fire hole 13 is equipped between 11.
1 downside of the brazier brick is connected with cylinder 14, and 14 inner wall of the cylinder is provided with insulating layer, the insulating layer inside
It is provided with liner protection steel wire.
The gas gun 2 is connect by flange and bolt with cylinder 14.
The input end of the gas gun 2 is connect with annular drum pipe.
The brazier brick 1 is frustum cone structure.
In order to facilitate the above-mentioned technical proposal of the utility model is understood, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
Burner cylinder 14 is mounted on petroleum chemical heating furnace or boiler by the steel plate flange welded in installation bolt and cylinder
Drop-bottom or sidewall paneling on, the burner hearth suitable for reading for stretching into brazier brick 1 of burner cylinder 14.Cylinder 14 is the installation of all components
Body, cylinder 14 are hollow cylindrical structure, are rolled by steel plate, and inner wall is provided with heat insulation layer and liner protection steel wire；Cylinder
14 intermediate channel of body is primary air channel, and bottom end face is closed by steel plate and insulating layer, is provided with thereon for gas gun
2, altar lamp 11, fire hole 13, the installation of peephole 15 fixed through-hole and joint face；14 bottom sidewall trepanning of cylinder and with two
Secondary combustion air butterfly valve 10, primary air butterfly valve 9 shell ring square tubes soldering be integrated.
Flue gas ejection system 4 is welded as a whole by lower supporting plate and 14 upper end of cylinder, and passes through inner nozzle 6 and two
The air hose welding connection of secondary combustion air butterfly valve 10, forms secondary combustion-supporting air duct.The shape of upper backup pad and lower supporting plate
Equally, it is ring flat-plate, one, middle section and 7 bottom of Venturi tube of fume pipe 5 is formed by side arc plate 8 and the welding of fume pipe 5
Portion's Taper Pipe is welded and fixed and is connected to, and forms inner flue gas of the stove injection return flow line；Inner nozzle 6 by the gradually necking of straight tube and two sections cone
Pipe forms, and jet pipe top is inserted into the middle section of fume pipe 5 and is welded and fixed therewith, and 6 head of inner nozzle reaches 7 bottom of Venturi tube
In portion's Taper Pipe pipe, the lower part straight tube port of inner nozzle 6 is connected to the welding of the air hose of secondary combustion-supporting air butterfly valve 10, forms secondary help
Fire air duct.
Combustion gas guide housing 3 is welded to form by straight tube and canalis spinalis, and is welded by the upper backup pad of straight tube and flue gas ejection system 4
It is connected in one, the welding of straight tube inner wall is evenly equipped with band steel, and the limit of brazier brick 1 for being assembled in it is used.Combustion gas guide housing 3 and fire pot
The annular gap formed between brick 1 be the rectification of secondary fuel gas and guide channel, nozzle by brazier brick secondary fuel pneumatic transmission come
Combustion gas speed it is higher, by after the annular gap step-down rectifier that is formed between combustion gas guide housing 3 and brazier brick 1, along fire
At basin brick male cone (strobilus masculinus) spray feed to brazier brick mouth.
Brazier brick 1 is mounted on the upper backup pad of flue gas ejection system 4, and by 3 restriction site of combustion gas guide housing, ensures it
It is concentric with burner centre.Brazier brick 1 be hollow circle tube structure, be made of refractory material, inner wall by bottom straight pipe, in
Between undergauge cone section and upper outlet straight pipe composition；Its outer wall is made of bottom straight pipe and top undergauge cone section；Under brazier brick 1
Portion's straight pipe side wall is uniformly distributed with the through-hole with 2 quantity of gas gun as many along the circumference, is secondary fuel gas channel, for the ease of two
Ejection of the grade fuel gas on 3 top of combustion gas guide housing evenly, secondary fuel vent hole is corresponded on 1 outer wall straight tube of brazier brick
Position is provided with annular groove, and section is semicircle.
Gas gun 2 is made of gun barrel, nozzle and annular drum pipe etc., centered on burner body centre not by circumference
In brazier brick 1, nozzle is mounted on gun barrel, and gun barrel is welded on annular drum pipe, and when installation, gun barrel passes through cylinder body bottom end
The preformed hole of plate, stretches into cylinder until reaching brazier brick 1 at 1 inner wall of brazier brick, then by flanged plate on gun barrel with
The corresponding flange face of 14 bottom end plate of cylinder is fixed with bolt；Nozzle is fixed by pipe screw thread or welding manner with gun barrel, nozzle
Primary fuel gas spurt is provided on the spherical of head, straight pipe side is provided with secondary fuel gas spurt, position pair in the middle part of nozzle
Answer the position of secondary fuel vent hole on brazier brick.
Altar lamp 11 is mounted on 14 bottom preset mounting hole of burner cylinder, gos deep into burner internal, and head reaches
1 centre position of brazier brick, for lighting primary fuel gas.The fuel gas of altar lamp 11 is conveyed by altar lamp metal hose and is supplied.
Fire hole 13 and peephole 15 are weldingly fixed on 14 bottom preset mounting hole of burner cylinder, are mainly used for lighting a fire
And observation flame is used.
Gas gun quantity 3-8 branch is arranged in 1 inside of burner brazier brick（It is designed according to load）, preferably 4, be distributed on
On the circumference of burner centre.Fuel gas is divided into two-stage by the nozzle in 2 pipette tips of gas gun, and first order fuel gas passes through nozzle
Nozzle top orifice by primary fuel gas blowout to 1 inner wall of brazier brick, and goes upward to Zhuan Kou, in uplink along 1 inner wall of brazier brick
It is mixed with primary air, level-one flame combustion is realized at fire pot transit；
Nozzle wall is provided with secondary fuel spray orifice, which is directed at the corresponding preformed hole of 1 side wall of brazier brick, by secondary fuel gas
It is oriented to outside brazier brick 1, has combustion gas guide housing 3 outside brazier brick 1, formed between ring-type between 1 outer wall of combustion gas guide housing 3 and brazier brick
Gap, secondary fuel gas are directed to by the gap at 1 outer bead of brazier brick, are mixed with inner flue gas of the stove and along 1 outer wall of brazier brick
Row to combustion zone, in 1 overhead of brazier brick with mixed flue gas after single-stage combustion in uplink while mix, up to completely burned completion.
Burner combustion air is classified to primary air and secondary combustion-supporting air, respectively from the one of burner base
Secondary combustion air and secondary combustion-supporting air tune wind butterfly valve entrance enter burner.Wherein, primary air passes through primary combustion-supporting
Enter in burner tube body 14 after air butterfly valve 9, and uplink, until by brazier brick 1, burner hearth is sprayed into from brick mouth, it is primary combustion-supporting
Air tentatively mixes in brazier brick 1 with primary fuel gas, burns in the outlet of brazier brick 1 and top；Secondary combustion-supporting air passes through
Enter flue gas ejection system 4 after 10, the uplink in 4 central air hose of flue gas ejection system is helped into Venturi tube 7 by secondary
Air high speed injection is fired, will be sucked close to the flue gas of furnace bottom in burner hearth, after being mixed with secondary combustion-supporting air, high speed sprays brazier brick
1 export center, the mixed gas is due to containing a large amount of flue gases, so oxygen content reduces, temperature increases, this part gaseous mixture is by text
Venturi 7 spray into flame kernel, with flame combustion elect rise, constantly with primary fuel and secondary fuel gas, Yi Jiyi
Secondary combustion air is mixed and burned, until wherein oxygen consumption is complete, burning is completed, final to realize inner flue gas of the stove circulating combustion.
Inner flue gas of the stove ejection system 4 utilizes 7 mixing principle of Venturi tube, secondary combustion-supporting air to pass through in Venturi tube 1
Inner nozzle 6 sprays at a high speed, and the low pressure formed in Venturi tube 7, Venturi tube 7 is connected to by 4 fume pipes 5 with burner hearth, no
Disconnectedly by the flue gas suction line close to furnace bottom, and from 7 upper outlet spray feed of Venturi tube to flame kernel.It is secondary by adjusting
10 aperture of combustion air butterfly valve, can adjust secondary combustion-supporting air, and then adjust the exhaust gas volumn of its injection, to reach best combustion
It burns and NOx emission effect.
Since primary fuel and secondary fuel are respectively along the adherent uplink of 1 inside and outside wall of brazier brick, brazier brick mouth forms
Ring fuel gas distributed areas are in fuel gas overrich state, and fuel gas is constantly spread in constantly electing uphill process, and
There is partial hearth flue gas to be mixed into；And fire pot center is mainly primary air, secondary combustion-supporting air and injection flue gas gaseous mixture,
Therefore, during continuous uplink, outer shroud fuel gas and internal combustion air are gradually mixed in interface, are spread, from Zhuan Kou
Start to burn, until burning is complete.Therefore, hollow annular flame is presented in burner, and flame kernel temperature is relatively low, and NOx is generated
Inhibit to effective.
Altar lamp 11 is arranged in burner, and using the 11 main flame of flame ignition burner of altar lamp, the root of main flame is steady
It is scheduled on brazier brick choma shape endface, when primary air sprays brick outlet, forms vortex low-pressure area at the annular end face,
A part of primary air, firsts and seconds fuel gas are sucked and are mixed by the low-pressure area, since vortex flow velocity is low, flame combustion
It burns more stable.
Every 2 top of gas gun is equipped with nozzle, and spray orifice is provided on nozzle.Branched gas gun 2 is fixed by flange, bolt
In 14 bottom end plate of cylinder, 2 fuel gas inlet end of gas gun is connect with annular drum pipe, and annular drum pipe passes through metal hose
It is connect with factory owner's gas hose 16, effect is that combustion gas is uniformly distributed to every gas gun 2.
Altar lamp 11 lights main flame, 11 fuel gas inlet of altar lamp by altar lamp 11 again by manual firing after lighting
It is connect with burning line using hose 12.
It is provided with peephole 15 and fire hole 13 in 14 bottom end plate of burner cylinder.
As shown in Figure 1, secondary combustion-supporting air intake 17, primary air entrance 18, main fuel gas inlet 19, altar lamp combustion
The position of injection smoke inlet 21 in gas entrance 20 and stove.
In conclusion by means of the above-mentioned technical proposal of the utility model, combustion gas is divided into 2 grades by nozzle, passes through one
Combustion air is divided into 2 grades by secondary combustion air and secondary combustion-supporting air butterfly valve etc., then, text is utilized further through secondary combustion-supporting air
Venturi injection inner flue gas of the stove reflux recycle burning, and pass through rational fuel gas and be classified Proportionality design, flexible adjusting control
Combustion gas recirculation volume in the stove of primary, secondary combustion-supporting air and its injection is made, the combination for realizing a variety of low NOx combusting technologies is answered
With to achieve the purpose that ultra-low NOx emission.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (10)
1. recycling ultra-low NOx emission gas burner in a kind of flue gas, which is characterized in that including burner brazier brick（1）, described
Brazier brick（1）Inside is provided with several gas guns（2）, the gas gun（2）Nozzle top be equipped with the first spray orifice, by institute
The fuel for stating the first spray orifice sprays to brazier brick（1）Inner wall, the gas gun（2）Nozzle side be equipped with the second spray orifice, it is described
Brazier brick（1）Side wall is equipped with and the matched through-hole of the second spray orifice, the brazier brick（1）Lateral wall is equipped with combustion gas guide housing
（3）, the brazier brick（1）Lateral wall and the combustion gas guide housing（3）Between form annular gap, by second spray orifice
Fuel sprays to annular gap；The brazier brick（1）Center is equipped with flue gas ejection system（4）, the flue gas ejection system（4）Including
Intersect the fume pipe of connection（5）, the fume pipe（5）Center is equipped with inner nozzle（6）, the inner nozzle（6）Upper end is connected with
Venturi tube（7）, the inner nozzle（6）With the fume pipe（5）It interconnects, the fume pipe（5）External port and fire pot
Brick（1）Inside is connected to, the inner nozzle（6）Lower end and secondary combustion-supporting air communication, primary air lead to brazier brick（1）
It is interior.
2. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that the combustion
Air gun（2）It totally 4 and is uniformly distributed and is set to the brazier brick（1）Inside.
3. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that the cigarette
Tracheae（5）Between pass through side arc plate（8）Connect into circle.
4. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that described one
Secondary combustion air passes through primary air pipeline and primary air butterfly valve（9）Connection, the secondary combustion-supporting air pass through
Secondary combustion-supporting air pipeline and secondary combustion-supporting air butterfly valve（10）Connection.
5. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that the fire
Basin brick（1）It is interior to be equipped with altar lamp（11）, the altar lamp（11）It is connected to altar lamp gas pipeline.
6. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 5, which is characterized in that the length
Bright lamp（11）Pass through hose between altar lamp gas pipeline（12）Connection, the hose（12）With the altar lamp（11）Between
Equipped with fire hole（13）.
7. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that the fire
Basin brick（1）Downside is connected with cylinder（14）, the cylinder（14）Inner wall is provided with insulating layer, is provided on the inside of the insulating layer interior
Lining protection steel wire.
8. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 7, which is characterized in that the combustion
Air gun（2）Pass through flange and bolt and cylinder（14）Connection.
9. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that the combustion
Air gun（2）Input end connect with annular drum pipe.
10. ultra-low NOx emission gas burner is recycled in a kind of flue gas according to claim 1, which is characterized in that the fire
Basin brick（1）For frustum cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250797.4U CN207893756U (en) | 2018-02-12 | 2018-02-12 | A kind of flue gas is interior to recycle ultra-low NOx emission gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250797.4U CN207893756U (en) | 2018-02-12 | 2018-02-12 | A kind of flue gas is interior to recycle ultra-low NOx emission gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207893756U true CN207893756U (en) | 2018-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820250797.4U Withdrawn - After Issue CN207893756U (en) | 2018-02-12 | 2018-02-12 | A kind of flue gas is interior to recycle ultra-low NOx emission gas burner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266727A (en) * | 2018-02-12 | 2018-07-10 | 岳阳恒盛石化科技有限公司 | The ultralow NO of cycle in a kind of flue gasxDischarge gas burner |
| CN109539258A (en) * | 2019-01-11 | 2019-03-29 | 佛山市科皓燃烧设备制造有限公司 | A kind of low NOx radiant tube combustion system of adjustable smoke backflow amount |
| AT524257A2 (en) * | 2020-10-07 | 2022-04-15 | Wienerberger Ag | CIRCULATION NOZZLE FOR A KILN |
-
2018
- 2018-02-12 CN CN201820250797.4U patent/CN207893756U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266727A (en) * | 2018-02-12 | 2018-07-10 | 岳阳恒盛石化科技有限公司 | The ultralow NO of cycle in a kind of flue gasxDischarge gas burner |
| CN108266727B (en) * | 2018-02-12 | 2024-04-02 | 岳阳恒盛石化科技有限公司 | Ultra-low NO of internal circulation of flue gas x Exhaust gas burner |
| CN109539258A (en) * | 2019-01-11 | 2019-03-29 | 佛山市科皓燃烧设备制造有限公司 | A kind of low NOx radiant tube combustion system of adjustable smoke backflow amount |
| CN109539258B (en) * | 2019-01-11 | 2023-10-10 | 佛山市科皓燃烧设备制造有限公司 | Low NOx radiant tube combustion system of adjustable flue gas reflux volume |
| AT524257A2 (en) * | 2020-10-07 | 2022-04-15 | Wienerberger Ag | CIRCULATION NOZZLE FOR A KILN |
| AT524257B1 (en) * | 2020-10-07 | 2022-12-15 | Wienerberger Ag | CIRCULATION NOZZLE FOR A KILN |
| AT524257A3 (en) * | 2020-10-07 | 2022-12-15 | Wienerberger Ag | CIRCULATION NOZZLE FOR A KILN |
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