CN208804669U - A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization - Google Patents
A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization Download PDFInfo
- Publication number
- CN208804669U CN208804669U CN201820668804.2U CN201820668804U CN208804669U CN 208804669 U CN208804669 U CN 208804669U CN 201820668804 U CN201820668804 U CN 201820668804U CN 208804669 U CN208804669 U CN 208804669U
- Authority
- CN
- China
- Prior art keywords
- air
- burner
- section
- wind
- circumferential direction
- 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.)
- Active
Links
Abstract
The utility model relates to the low nitrogen turbulent burners and burner of a kind of wind powder peripheral orientation polarization.The burner includes center wind duct, First air channel, inside and outside secondary air channel, First air axial blade cyclone, inner second air axial blade cyclone, outer second air tangential vane cyclone, First air circumferential direction coal dust classifier, inside and outside Secondary Air air quantity bias-adjusted device.First air is circumferentially divided into two by First air circumferential direction coal dust classifier, at dense powder section and light powder section First air；Secondary Air is circumferentially divided into two by air quantity bias-adjusted device, at high wind section and weak wind section Secondary Air.Inside and outside Secondary Air air quantity bias-adjusted device is respectively the ring-like baffle of part-circular periphery and part-circular periphery cylinder baffle.In burner outlet section, high wind section Secondary Air and light powder section First air match, and weak wind section Secondary Air and dense powder section First air match.The wind powder fit system can strengthen kindling and inhibit primary zone peak temperature, substantially reduce NOxDischarge.
Description
Technical field
The utility model relates to burner arts, in particular to the low nitrogen turbulent burner of a kind of wind powder peripheral orientation polarization and combustion
Burn device.
Background technique
Turbulent burner is widely used in the combustion apparatus such as station boiler, Industrial Boiler, it makes air-flow using cyclone
Rotary motion is generated, air-flow forms rotating jet after entering burner hearth, and interior recirculating zone is formed inside rotating jet, passes through volume
It inhales high temperature gases recirculating and lights fuel.In the design and operation of turbulent burner, strengthen kindling, efficient burning is low-nitrogen discharged
It is important research topic always.
Bias combustion is to reduce nitrogen oxides (NO in combustion processx) one of the means that generate, coal dust is in oxygen-enriched light coal
Burning can reduce ignition temperature respectively in powder region and the thick coal culm region of oxygen deprivation, inhibit NOxGeneration.
Bias pulverized coal turbulent burner in the prior art mostly uses greatly radial shading technique, is characterized in that coal dust
Radially it is divided into deep or light two circle ring areas, bias pulverized coal is along radial distribution.On the outside, such as China is practical for some thick coal culm rings
New patent 93144359.1 " a kind of radial thick/thin spiral flow powdered coal burner ", some thick coal culm rings are practical in inside, such as China
New patent 03134317.1 " a kind of radial direction gradation double tune wind vortex burner ", but since burner First air exports
Radial dimension is smaller, and First air, close to Secondary Air, air-flow is in radial mix faster, to keep the actual effect of air-coal separating big
It gives a discount, therefore, reduces NOxEffect it is fairly limited.
In addition, also there is patent that First air is circumferentially formed to the deep or light multiply breeze airflow being spaced apart, such as China is practical
New patent 200810018042.2 " a kind of turbulent burner of coal fines circumferential direction concentrating sectorization stopping whorl " and Chinese utility model are special
Benefit 200580007215.5 " fuel injectors of low Nox (NOx) and improve flame holdings ", since First air is close to two
Secondary wind, the discount so deep or light actual effect equally gets beat up, the effect for reducing NOx are equally limited.
Utility model content
In view of the deficiencies in the prior art, the utility model provide a kind of wind powder peripheral orientation polarization low nitrogen turbulent burner 1 and
Burner strengthens kindling, effectively inhibits the peak temperature in primary zone, reduce to improve the air-coal separating effect of coal dust conscientiously
Burn NOxGeneration.
In order to achieve the above objects and other related objects, the low nitrogen of a kind of wind powder peripheral orientation polarization provided by the utility model
Turbulent burner 1, including it is center wind duct 12, First air channel 13, inner second air channel 14, outer second air channel 15, primary
Wind axis is to vane swirler 132, inner second air axial blade cyclone 141, outer second air tangential vane cyclone 151, primary
Wind circumferential direction coal dust classifier 131, inner second air air quantity bias-adjusted device 142, outer second air air quantity bias-adjusted device 152.
In one embodiment, the First air circumferential direction coal dust classifier 131 is by 12 outer wall of center wind duct
On partial circumferential extent in formed along several guide vanes of helical row, retain between the guide vane it is certain between
Gap.
In one embodiment, the guide vane of the circumferential dense-and-weak separator is arranged in the center wind duct outer wall
On half of circumference range in.
In one embodiment, the guide vane of the First air circumferential direction coal dust classifier 131 is arranged in the center
In half of circumference range on 12 outer wall of wind channel.
In one embodiment, the First air circumferential direction dense-and-weak separator 131 is located at First air axial blade rotation
Flow the downstream of device 132.
In one embodiment, inner second air air quantity bias-adjusted device 142 is provided in the inner second air channel,
Outer second air air quantity bias-adjusted device 152 is provided in the outer second air channel.
In one embodiment, the inner second air air quantity bias-adjusted device 142 is the ring-like baffle of part-circular periphery, institute
Stating outer second air air quantity bias-adjusted device 152 is part-circular periphery cylinder baffle.
In one embodiment, the ring-like baffle of the part-circular periphery and part-circular periphery cylinder baffle circumferential direction angle are week
0.35~0.65 times of angle.
In one embodiment, the First air circumferential direction coal dust classifier 131, First air axial blade cyclone 132,
Inner second air axial blade cyclone 141 and outer second air tangential vane cyclone 151 deflect along clockwise direction.
In one embodiment, the First air circumferential direction coal dust classifier 131, First air axial blade cyclone 132,
Inner second air axial blade cyclone 141 and outer second air tangential vane cyclone 151 deflect in the counterclockwise direction.
In the present invention, First air is divided into two by First air circumferential direction coal dust classifier 131 along whole circumference, at dense
Powder section and light powder section First air；Secondary Air is divided into two by air quantity bias-adjusted device along whole circumference, at high wind section and weak wind
Section Secondary Air.In burner outlet section, formed high wind section Secondary Air match with light powder section First air, weak wind section Secondary Air with it is dense
The wind powder fit system that powder section First air matches.This wind powder fit system can strengthen kindling and inhibit the peak in primary zone
It is worth temperature, substantially reduces NOx emission.
The utility model also provides a kind of combustion of low nitrogen turbulent burner for being equipped with aforementioned any wind powder peripheral orientation polarization
Burn device.
Detailed description of the invention
Fig. 1 is shown as in the utility model embodiment a kind of low nitrogen turbulent burner of wind powder peripheral orientation polarization on boiler
Schematic view of the mounting position.
Fig. 2 is shown as a kind of principal section of the low nitrogen turbulent burner of wind powder peripheral orientation polarization in the utility model embodiment and shows
It is intended to.
Fig. 3 is shown as First air channel design schematic diagram in the utility model embodiment.
Fig. 4 is shown as inner second air channel and outer second air channel design schematic diagram in the utility model embodiment.
Fig. 5 is shown as the schematic cross-section in the exit of the utility model turbulent burner shown in Fig. 2.
Fig. 6 is shown as the jet path figure in the utility model embodiment.
Fig. 7 is shown as the pulverized coal concentration field in the utility model First air exit.
Fig. 8 is shown as the velocity field in the utility model Secondary Air exit.
Fig. 9 is shown as installing the velocity field of the boiler primary zone longitudinal section of traditional turbulent burner.
Figure 10 is shown as the velocity field of the boiler primary zone longitudinal section of the utility model turbulent burner shown in installation diagram 2.
Figure 11 is shown as installing the temperature field of the boiler primary zone longitudinal section of traditional turbulent burner.
Figure 12 is shown as the temperature field of the boiler primary zone longitudinal section of the utility model turbulent burner shown in installation diagram 2.
Figure 13 is shown as installing the NO of the full burner hearth longitudinal section of boiler of traditional turbulent burnerxConcentration field.
Figure 14 is shown as the NO of the full burner hearth longitudinal section of boiler of the utility model turbulent burner shown in installation diagram 2xConcentration
?.Component label instructions
The low nitrogen turbulent burner of 1 wind powder peripheral orientation polarization
12 center wind ducts
13 First air channels
131 First air circumferential direction coal dust classifiers
132 axial blade cyclones
The light powder section of 134 First airs
The dense powder section of 135 First airs
14 inner second air channels
141 axial blade cyclones
142 inner second air air quantity bias-adjusted devices
143 inner second air high wind sections
The weak wind section of 144 inner second airs
15 outer second air channels
151 tangential vane cyclones
152 outer second air air quantity bias-adjusted devices
153 outer second air high wind sections
The weak wind section of 154 outer second airs
2 boilers
3 separate type after-flame wind combustors
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that structure, ratio, size etc. depicted in this specification attached drawing, only to cooperate disclosed in specification
Content, for those skilled in the art understand and read, be not intended to limit the utility model enforceable qualifications,
Therefore not having technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing this reality
With under novel the effect of can be generated and the purpose that can reach, should all still falling in the revealed technology contents institute of the utility model
In the range of capable of covering.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term is merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, the change of relativeness
Or adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
Fig. 1-5 shows one embodiment of the utility model, can be applied to generating plant pulverized coal boiler, industrial coal powder boiler, each
Kind of combustion gas, oil burning boiler and other it is various with rotating jet burning solid, liquid, gaseous fuel burner in.
As shown in Figure 1, the utility model turbulent burner 1 is mounted on the front wall and rear wall in the primary zone of boiler 2, as
The burner in primary zone.On the front wall and rear wall of the burning-out zone that separate type burnout degree (SOFA wind) burner 3 is mounted on boiler 2,
Burner as burning-out zone.Using pulverized bituminous coal as fuel in the present embodiment, using Researched of Air Staging Combustion Burning Pulverized Coal, sky needed for coal dust firing
The 70% of gas is sent into primary zone by burner 1, and the air of residue 30% is sent into burning-out zone by burner 3.
As shown in Fig. 2, the utility model turbulent burner 1 includes the center wind duct 12, one set gradually from inside to outside
Secondary wind channel 13, inner second air channel 14 and outer second air channel 15.Center wind duct 12 is to pot furnace injection without coal dust
Direct current centre wind, eddy flow First air of the First air channel 13 to pot furnace injection containing coal dust, inner second air channel 14 and outer secondary
The jetstream whirl Secondary Air into boiler of wind channel 15.First air circumferential direction coal dust classifier 131 is equipped in First air channel 13, and
Axial blade cyclone 132 positioned at 131 upstream of First air circumferential direction coal dust classifier.Axial direction is disposed in inner second air channel 14
Vane swirler 141 is disposed with tangential vane cyclone 151 in outer second air channel 15.
As shown in figure 3,12 outer wall of center wind duct is equipped with First air circumferential direction dense-and-weak separator 131 and axial blade eddy flow
Device 132.First air circumferential direction coal dust classifier 131 in First air channel 13 is by the hemicycle on 12 outer wall of center wind duct
It is formed in all ranges along several guide vanes of helical row, retains certain interval between guide vane.In conjunction with Fig. 3, figure
5, when First air passes through First air circumferential direction coal dust classifier 131, a part of First air is not set in First air channel 13 to be led
It flows flowing, another part First air in the circumferential area of blade and is provided with the circumferential area of guide vane in First air channel 13
Interior flowing, the part First air in the region are moved along guide vane direction, into First air channel 13 in not set water conservancy diversion leaf
In the circumferential area of piece, converge with the First air in the region, the gap that remaining First air then passes through guide vane is flowed forward
It is dynamic, finally the light powder section 133 (Fig. 5 dotted line upper area) of First air and the dense powder section of First air are formed in the outlet of burner 1
134 two strands of (Fig. 5 dotted line lower zone) semiorbicular breeze airflows of approximation.Jet path is referring to Fig. 6.By adjusting guide vane
Angle, the coal dust ratio of adjustable dense powder section First air and light powder section First air.
On this basis, the inner second air in interior secondary air channel 14 and 15 inlet of outer second air channel respectively can be passed through
Air quantity bias-adjusted device 142 and outer second air air quantity bias-adjusted device 152 are to high wind section Secondary Air and weak wind section Secondary Air
Air quantity bias-adjusted is carried out, so that Secondary Air air quantity reaches required bias profile at burner outlet, i.e., in burner outlet
Section forms the wind powder of high wind section Secondary Air and the matching of light powder section First air, weak wind section Secondary Air and the matching of dense powder section First air
Fit system.Fig. 2,4 show inner second air air quantity bias-adjusted device 142 and outer second air air quantity bias-adjusted device 152
A kind of specific example.So-called inner second air air quantity bias-adjusted device 142 and outer second air air quantity bias-adjusted device 152 hinder
Keep off the ring-like baffle of part-circular periphery and part-circular periphery cylinder gear of the flowing of secondary air channel inlet partial circumferential extent inner second air
Plate.When inner second air pass through equipped with inner second air air quantity bias-adjusted device 142 inner second air channel 14 when, inner second air from
It is not provided with and enters in the channel of inner second air air quantity bias-adjusted device and rotate, two in the outlet of burner 1 is formed
Secondary wind high wind section 143 (Fig. 5 dotted line lower zone) and the weak wind section 144 (Fig. 5 dotted line upper area) of inner second air.Similarly, when
When outer second air passes through the outer second air channel 15 equipped with outer second air air quantity bias-adjusted device 152, outer second air is never set
There is the channel of outer second air air quantity bias-adjusted device to enter and rotate, it is strong to form outer second air in the outlet of burner 1
Wind section 153 (Fig. 5 dotted line lower zone) and the weak wind section 154 (Fig. 5 dotted line upper area) of outer second air.By adjusting inner second air
The position of air quantity bias-adjusted device 142 and outer second air air quantity bias-adjusted device 152, it is strong at adjustable burner outlet
The distributing position of wind section Secondary Air and weak wind section Secondary Air realizes that Secondary Air bias profile is formed that is, in burner outlet section
The wind powder fit system that high wind section Secondary Air and light powder section First air match, weak wind section Secondary Air and dense powder section First air match.
When boiler operatiopn, on the one hand this wind powder fit system that the utility model turbulent burner is formed creates poor
Oxygen and oxygen-enriched two kinds of combustion atmospheres.Thick coal culm is easily lighted, and kindling and the low-load combustion-stabilizing of colm are conducive to.In thick coal culm air-flow
Coal powder density is high, and kindling is able in advance and stablizes, and oxygen concentration is lower, and the peak temperature after kindling is suppressed；Thin powdered coal gas
Oxygen concentration is high in stream, but coal powder density is low can also reduce ignition temperature, to all can be effectively controlled NOxGeneration.Thick coal culm
Combustion with meagre oxygen produces a large amount of reducibility gas, the NO that can also be generated with burningxReduction reaction is generated, NO is reducedxDischarge it is dense
Degree.On the other hand, this wind powder fit system can effectively postpone the mixing of thick coal culm and Secondary Air, thus penetrate in long
Pulverized coal bias combustion can be kept in popular journey.Therefore, the utility model turbulent burner can strengthen kindling and inhibit main combustion
The peak temperature in area, substantially reduces NOx emission.
In same the utility model turbulent burner 1, (including First air is circumferential for all blades for generating flowing deflection
Coal dust classifier 131, First air axial blade cyclone 132, inner second air axial blade cyclone 141 and outer second air are tangential
Vane swirler 151), deflection direction is identical, can both deflect, and can also deflect in a counterclockwise direction in a clockwise direction.It is above-mentioned
Embodiment illustrates a kind of design deflected counterclockwise, and clockwise design scheme only need to be by all blades for generating flowing deflection
Do symmetry transformation arrangement.
Utility model people carries out the CFD Numerical-Mode of velocity field and pulverized coal concentration field to the utility model turbulent burner respectively
It is quasi-, to confirm the actual effect of wind powder peripheral orientation polarization.Fig. 7 is the distribution of First air exit pulverized coal concentration field.Fig. 8 is Secondary Air
Exit velocity field distribution.
In terms of coal powder density field distribution, the First air circumferential direction coal dust classifier of the utility model turbulent burner is by thick coal culm
It concentrates in lower right area.In terms of speed field distribution, the Secondary Air of the utility model turbulent burner is concentrated in top left region.
Wind powder may be implemented in the peripheral orientation polarization of burner outlet in the utility model turbulent burner.
Utility model people all installs traditional turbulent burner and all installation the utility model eddy flow combustions to main burning area
The boiler of burner carries out velocity field, temperature field and NO respectivelyxThe CFD numerical simulation of concentration field, the burning for comparing the two are poor
It is different.Fig. 9, Figure 11 and Figure 13 are a certain longitudinal section velocity field of boiler, temperature field and the NO for installing traditional turbulent burner respectivelyxIt is dense
Spend the distribution of field.Figure 10, Figure 12 and Figure 14 are a certain longitudinal section speed of boiler for installing the utility model turbulent burner respectively
The distribution of field, temperature field and NOx concentration field.
In terms of the distribution of velocity field, for the utility model turbulent burner due to the bias profile of Secondary Air, recirculation zone is inclined
To thick coal culm side, the thick coal culm region inhaled near high temperature gas flow to burner nozzle can be rolled up.
In terms of the distribution in temperature field, the outlet temperature of the utility model turbulent burner is higher, is conducive to burning environment of inferior quality coal
It is all lower with the temperature of the steady combustion of underload, and opposite conventional burners, thick coal culm combustion with meagre oxygen and thin powdered coal oxygen-enriched combusting,
Middle and later periods temperature of burning is also lower, and high temperature peak region is relatively small, this provides good temperature strip to reduce NOx
Part.
From NOxThe distribution of concentration is seen, the NO at the boiler export of the utility model turbulent burner is installedxConcentration has bright
Aobvious reduction, the boiler than installing traditional turbulent burner reduce about 20% or so.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (9)
1. a kind of low nitrogen turbulent burner (1) of wind powder peripheral orientation polarization, including center wind duct (12), First air channel (13),
Inner second air channel (14), outer second air channel (15), which is characterized in that the burner further include: the rotation of First air axial blade
Flow device (132), inner second air axial blade cyclone (141), outer second air tangential vane cyclone (151), First air circumferential direction
Coal dust classifier (131), inner second air air quantity bias-adjusted device (142), outer second air air quantity bias-adjusted device (152).
2. turbulent burner (1) according to claim 1, it is characterised in that:
The First air circumferential direction coal dust classifier (131) is by the partial circumferential extent on the center wind duct (12) outer wall
Several guide vanes along helical row are formed, and retain certain interval between the guide vane.
3. turbulent burner (1) according to claim 2, it is characterised in that:
The guide vane of the First air circumferential direction coal dust classifier (131) is arranged in half on the center wind duct (12) outer wall
In a circumference range.
4. turbulent burner (1) according to claim 1, it is characterised in that:
The First air circumferential direction coal dust classifier (131) is located at the downstream of the First air axial blade cyclone (132).
5. turbulent burner (1) according to claim 1, it is characterised in that:
Inner second air air quantity bias-adjusted device (142) is provided in the inner second air channel, in the outer second air channel
It is provided with outer second air air quantity bias-adjusted device (152).
6. turbulent burner (1) according to claim 5, it is characterised in that:
The inner second air air quantity bias-adjusted device (142) is the ring-like baffle of part-circular periphery, the outer second air air quantity biasing
Regulating device (152) is part-circular periphery cylinder baffle.
7. turbulent burner (1) according to claim 6, it is characterised in that:
The ring-like baffle of the part-circular periphery and part-circular periphery cylinder baffle circumferential direction angle are 0.35~0.65 times of round angle.
8. turbulent burner (1) according to claim 1, it is characterised in that:
The First air circumferential direction coal dust classifier (131), First air axial blade cyclone (132), inner second air axial blade
It is identical that cyclone (141) deflects direction with outer second air tangential vane cyclone (151) in single burner, both can choose
It deflects clockwise, also can choose and counterclockwise deflect.
9. a kind of burner, it is characterised in that: be equipped with any turbulent burner of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820668804.2U CN208804669U (en) | 2018-05-07 | 2018-05-07 | A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820668804.2U CN208804669U (en) | 2018-05-07 | 2018-05-07 | A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208804669U true CN208804669U (en) | 2019-04-30 |
Family
ID=66224836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820668804.2U Active CN208804669U (en) | 2018-05-07 | 2018-05-07 | A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208804669U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413388A (en) * | 2018-05-07 | 2018-08-17 | 上海交通大学 | A kind of low nitrogen turbulent burner of wind powder peripheral orientation polarization |
| CN110319436A (en) * | 2019-06-15 | 2019-10-11 | 沈阳环境科学研究院 | A kind of deep or light classification vortex burner of compact |
| CN112781035A (en) * | 2021-03-18 | 2021-05-11 | 烟台龙源电力技术股份有限公司 | Offset pulverized coal burner and combustion system |
| CN113464933A (en) * | 2021-07-02 | 2021-10-01 | 合肥水泥研究设计院有限公司 | Swirler with gradually changed spiral angle |
-
2018
- 2018-05-07 CN CN201820668804.2U patent/CN208804669U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413388A (en) * | 2018-05-07 | 2018-08-17 | 上海交通大学 | A kind of low nitrogen turbulent burner of wind powder peripheral orientation polarization |
| CN108413388B (en) * | 2018-05-07 | 2023-11-28 | 上海交通大学 | Low-nitrogen cyclone burner with circumferentially offset wind powder |
| CN110319436A (en) * | 2019-06-15 | 2019-10-11 | 沈阳环境科学研究院 | A kind of deep or light classification vortex burner of compact |
| CN112781035A (en) * | 2021-03-18 | 2021-05-11 | 烟台龙源电力技术股份有限公司 | Offset pulverized coal burner and combustion system |
| CN113464933A (en) * | 2021-07-02 | 2021-10-01 | 合肥水泥研究设计院有限公司 | Swirler with gradually changed spiral angle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208804669U (en) | A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization | |
| CN205592954U (en) | One -level gas injection type low NOx burner | |
| CN1095970C (en) | Method and apparatus for burning pul verized fuel | |
| US4930430A (en) | Burners | |
| CN102235666B (en) | Pulverized coal burner and pulverized coal fired boiler comprising same | |
| CN102393015A (en) | Dense-phase spiral-flow pulverized-coal burner | |
| CN101280921B (en) | Vortex combustor of coal fines circumferential direction concentration sectional stopping whorl | |
| JP2002518656A (en) | Low NOx and low CO burners and method of operation | |
| CN102434878A (en) | Three-layer secondary air low nitrogen oxide swirling burner | |
| CN101832550A (en) | Swirl pulverized-coal burner based on multi-level pulverized-coal concentration | |
| CN205351318U (en) | Air classification hangs down NOx gas burner with adjustable whirl intensity | |
| CN108662585B (en) | Low-load stable-combustion ultralow NOXCombustion system and combustor thereof | |
| CN102679337B (en) | Cyclone combustor with adjustable flame shape and mixing strength | |
| CN205807402U (en) | A kind of low-nitrogen oxide discharging vortex burner with surrounding air | |
| CN202040815U (en) | Natural gas combustion-supporting industrial pulverized coal cyclone combustor | |
| CN103759259A (en) | Intensive-classification low-NOx pulverized coal burner | |
| CN210035479U (en) | Central dense-dilute burning loss prevention cyclone burner | |
| CN104154533A (en) | Reverse flow pre-mixing type pulverized coal low-nitrogen combustor and combustion method thereof | |
| CN109931605B (en) | Multistage air distribution radial outer thick and inner thin cyclone burner | |
| CN202647746U (en) | Real-time adjustable novel swirl burner | |
| CN107543160A (en) | A kind of ultralow nitrogen gas burner | |
| CN110319437A (en) | A kind of oxygen-enriched multiple flame vortex coal burner | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| CN109654485A (en) | A kind of swirling pulverized coal combustion device using flue gas recirculation and precombustion chamber | |
| CN204756916U (en) | Brown coal cyclone burner with prevent burnt wind |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |