CN208535967U - One kind four encircles W flame twin-stage bias combustion device - Google Patents
One kind four encircles W flame twin-stage bias combustion device Download PDFInfo
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- CN208535967U CN208535967U CN201820776941.8U CN201820776941U CN208535967U CN 208535967 U CN208535967 U CN 208535967U CN 201820776941 U CN201820776941 U CN 201820776941U CN 208535967 U CN208535967 U CN 208535967U
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- spout
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- chimney arch
- thick coal
- coal culm
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 38
- 239000003245 coal Substances 0.000 claims abstract description 73
- 210000004894 snout Anatomy 0.000 claims description 20
- 210000000867 larynx Anatomy 0.000 claims description 18
- 230000001464 adherent effect Effects 0.000 claims description 14
- 239000002817 coal dust Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 35
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001535 kindling effect Effects 0.000 abstract description 2
- 230000003134 recirculating effect Effects 0.000 abstract description 2
- 239000002356 single layer Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 241000143973 Libytheinae Species 0.000 description 3
- 101150097977 arch-1 gene Proteins 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 241000707825 Argyrosomus regius Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
Abstract
The utility model relates to W flame grading combustion technology fields, specifically a kind of four arches W flame twin-stage bias combustion device, the burner hearth of described device includes upper furnace body, lower furnace body and dry bottom hopper, wherein the lower furnace body goes up chimney arch, front lower chimney arch by preceding upper chimney arch, afterwards, chimney arch, front wall and the encirclement of rear wall is descended to hold together to be formed afterwards.The utility model has the beneficial effects that, kindling is stablized, two-stage combustion device jet stream two sides space becomes larger, tonifying Qi condition is good, be conducive to high temperature gases recirculating, flameholding, Load Distribution is uniform, Secondary Air, thick coal culm, thin powdered coal is into being layered injection after burner hearth, fractional combustion, form the concentration cell of part stage by stage in burner hearth, breeze airflow is realized by the two-stage combustion device layered arrangement mode of " light-dense-deep or light mixing ", further enhance the mode of single layer burner, high efficency low NOx two-stage combustion device and air staged combustion technology are combined, improve fuel fuel efficiency rate and the discharge for reducing NOx again.
Description
Technical field
The utility model relates to W flame grading combustion technology field, specifically a kind of four arches W flame twin-stage bias combustion dress
It sets.
Background technique
W flame boiler has a clear superiority when using the low volatiles coal such as anthracite and meager coal inferior, and not by boiler
The restriction of capacity enlargement, can greatly save the energy, thus be widely applied.But W flame boiler is in combustion
Generally existing coal dust after-flame is poor, is easy to stop working at low load, poor combustion stability, the problems such as NOx emission is high.
It is " 101832549 B of CN ", entitled " multi-ejection application No. is " 201010149634.5 ", Authorization Notice No.
The Chinese invention patent of the method for fractional combustion " discloses a kind of method for reducing NOx emission, on face arch extremely by burner hearth center
Once wind snout (thick coal culm air-flow), inner second air spout, lack of gas (thin powdered coal air-flow) are sequentially arranged between front water wall
Spout and outer second air spout.Since interior outer second air air-flow and the injection of ejector action step by step for encircleing lower Secondary Air are into dry bottom hopper
Portion realizes multi-ejection grading combustion while ensure that pulverized coal particle has enough residence times in furnace.
Application No. is " 201410076784.6 ", the Chinese invention patent public affairs that application publication number is " 103776024 A of CN "
Opened a kind of arrangement of burner of W flame boiler, thin powdered coal air-flow close to thick coal culm air-flow, avoid Secondary Air too early with
The mixing of thick coal culm air-flow, forms the reduction atmosphere of hypoxemia.
It is " 206112906 U of CN " application No. is " 201621049260.9 ", Authorization Notice No., entitled " a kind of novel
Deep or light W flame burner " Chinese utility model patent disclose a kind of deep or light W flame burner, including lower furnace body,
It is upper furnace body, preceding chimney arch, dry bottom hopper, rear chimney arch and the multiple thick coal culm spouts being connected with lower furnace body, thin powdered coal spout, secondary
Wind snout, after-flame air port and two adherent wind snouts；The lower furnace body, upper furnace body, preceding chimney arch and rear chimney arch constitute W flame
The burner hearth of burner, thick coal culm spout and thin powdered coal spout on preceding chimney arch and rear chimney arch divide upper layer and lower layer interlaced arrangement,
Wherein the thick coal culm spout and thin powdered coal spout close to burner hearth center are in linear type and overfire air port arranged for interval；The lower furnace
Multiple wind snouts three times, the multiple thick coal culm spout, light coal are offered on the front water wall and rear water wall of body respectively
Powder spout, overfire air port, three times wind snout and two adherent wind snouts are respectively relative to burner hearth center line and are symmetrically installed.
Although the above-mentioned prior art inhibits the generation of NOx to a certain extent, the degree of reduction be not also it is particularly evident, because
This still needs to be further improved optimization boiler structure to obtain preferable low NOx combustion apparatus.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide the burner of low NOx a kind of.
In order to achieve the above object, the utility model provides four arch W flame twin-stage bias combustion device of one kind, the dress
The burner hearth set includes upper furnace body, lower furnace body and dry bottom hopper, wherein the lower furnace body by preceding upper chimney arch, afterwards upper chimney arch, front lower chimney arch,
Chimney arch, front wall and the encirclement of rear wall is descended to hold together to be formed afterwards；
It is horizontally formed larynx connecting line on a circle on the chimney arch of the upper furnace body and lower furnace body intersection, upper chimney arch before described,
A circle lower larynx connecting line is formed on the chimney arch of upper chimney arch and front lower chimney arch, rear lower chimney arch intersection afterwards；
Several the first air port groups are equipped in the preceding upper chimney arch and afterwards on upper chimney arch, each first air port group includes by upper
Rectangle fire air nozzle, a lack of gas spout and the thick coal culm spray that larynx connecting line is successively laid to lower larynx connecting line direction
Mouthful, with a thick coal culm spout with being additionally provided with inner second air spout on circumferential upper chimney arch；
Several the second air port groups are equipped in the front lower chimney arch and afterwards on lower chimney arch, each second air port group includes with week
It is front lower on the downside of secondary lack of gas spout from the group of second air port to laying, secondary thick coal culm spout and outer second air spout
It is equipped with the adherent wind snout of rectangle that a circle horizontal position is laid jointly on chimney arch and rear lower chimney arch；
Wind snout three times is respectively equipped on the front wall and rear wall；
Above-mentioned each spout is connected with the lower furnace body.
Preferably, each of described first air port group includes two above-mentioned rectangle fire air nozzles, two lack of gas
Spout, two thick coal culm spouts and four inner second air spouts；
Two thick coal culm spouts therein and four putting in order for inner second air spout are followed successively by one from left to right
In a inner second air spout, a thick coal culm spout, two inner second air spouts, a thick coal culm spout and one
Overfire air port；
Each of described second air port group includes an above-mentioned secondary lack of gas spout, a secondary thick coal culm spout and four
A outer second air spout, putting in order for these spouts are followed successively by an outer second air spout, a secondary lack of gas from left to right
Spout, two outer second air spouts, a secondary thick coal culm spout and an outer second air spout.
Preferably, a lack of gas spout and a thick coal culm spout, inner second air spout, secondary lack of gas spout,
Secondary thick coal culm spout and four outer second air spouts are slit spout.
Preferably, the length-width ratio of the rectangle fire air nozzle is (2.5~3): 1.
Preferably, the number for the rectangle fire air nozzle that the device is equipped with respectively is 24, and burnout degree rate is 20%.
As further program of the utility model, before described device upper chimney arch and afterwards upper chimney arch close to the position of upper larynx connecting line
Be provided with 24 rectangle fire air nozzles altogether, burnout degree rate is 20%, make the oxygen in each stage well with uncombusted coal
Powder particles reaction reduces unburned carbon in flue dust, forms reduction atmosphere after simultaneous reactions, reduce the further generation of NOx.
Preferably, the length-width ratio of the adherent wind snout of the rectangle is (20~24): 1, adherent wind accounts for the total Secondary Air of boiler
7.9%, wind speed 8.93m/s.
Preferably, a lack of gas and secondary lack of gas proportion are 3: 1 in described device, and a thick coal culm is matched with secondary thick coal culm
Than being 1.67: 1, inner second air and outer second air proportion are 5: 2.As a further solution of the present invention: in preceding upper chimney arch
With lack of gas spout of slit, thick coal culm spout of slit, slit inner second air spout are dispersed on rear upper chimney arch
And rectangle fire air nozzle；It is secondary that the secondary lack of gas spout of slit, slit are dispersed on front lower chimney arch and rear lower chimney arch
Thick coal culm spout and slit outer second air spout.In secondary lack of gas spout of the upper chimney arch at burner hearth center, secondary dense
In successively interval-staggered, the outer second air interval of lower chimney arch is mingled with thin powdered coal and dense for coal dust spout and outer second air spout
Coal dust injection enters burner hearth, and Secondary Air, thick coal culm, thin powdered coal has been achieved into the purpose for being classified injection, fractional combustion after burner hearth.
Secondary Air on upper chimney arch and lower chimney arch is reconfigured distribution with the deep or light spout of slit by the present apparatus, realizes part
Property sectional combustion.Chimney arch is divided into four stepped arches, and two upper chimney arch (preceding upper chimney arch and afterwards upper chimney arch) are dispersed with a lack of gas
Spout, below interlaced arrangement inner second air and a thick coal culm spout；On two lower chimney arch (front lower chimney arch and afterwards lower chimney arch)
The alternate secondary lack of gas spout that is interspersed, outer second air spout, secondary thick coal culm spout, realize breeze airflow by " light one
The arrangement of a dense deep or light mixing " forms the concentration cell of part stage by stage in burner hearth, and upper layer thin powdered coal first burns, in
Layer inner second air is mingled with thick coal culm burning, and the outer second air of lower layer is mingled with deep or light mixed coal dust and burns away, in this way in
Layer is distributed at the Spatial Coupling of the right characteristic of high temperature, this region substantially meets burning, guarantees the sufficiently high temperature of burner hearth flame of centre
Degree is horizontal.The deep or light Secondary Air mix and match of lower layer guarantees that coal dust is concentrated in the middle part of burner hearth, advantageous to catching fire, while reducing this area
The excess air coefficient in domain, combustion with meagre oxygen, N0x reduzate are largely precipitated, and restore generated NOx.The device is attached in superior laryngeal aperture
It is closely provided with fire air nozzle, plays later period combustion-supporting effect, realizes the Multistage Control to combustion zone excess air coefficient, both
Efficiency of combustion can be improved, NOx generation can be also reduced；It has been laid simultaneously in separate lower larynx connecting line close to the place of water-cooling wall adherent
Wind snout fills into one cold wind near front wall and rear water wall, and the water-cooling wall on combustion zone top is formed about rich sky
Gas area, adherent wind sweeps across the centre burning into burner hearth with air-flow later, and such aerodynamic field composition can be reduced
Lime-ash plays a protective role to wall-cooling surface in the deposition of water-cooling wall, slows down water-cooling wall local overheating phenomenon to a certain extent.
The utility model has the beneficial effects that kindling is stablized, two-stage combustion device jet stream two sides space becomes larger, tonifying Qi condition
It is good, be conducive to high temperature gases recirculating, flameholding, Load Distribution is uniform, and Secondary Air, thick coal culm, thin powdered coal are into after burner hearth points
Layer injection, fractional combustion form the concentration cell of part stage by stage in burner hearth, realize breeze airflow by " light-dense-deep or light
The two-stage combustion device layered arrangement mode of mixing ", further enhances the mode of single layer burner, high efficency low NOx twin-stage is fired
Burner and air staged combustion technology combine, and improve fuel fuel efficiency rate and the discharge for reducing NOx again.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 be Fig. 1 in C to partial illustrations.
Wherein:
100- upper furnace body 200- lower furnace body 300- dry bottom hopper
The upper front lower chimney arch of chimney arch 3- after upper chimney arch 2- before 1-
Wall after lower chimney arch 5- front wall 6- after 4-
The upper larynx connecting line 8- lower larynx connecting line 9- rectangle fire air nozzle of 7-
The thick coal culm spout 12- inner second air spout of lack of gas spout 11- mono- time of 10- mono- time
The thick coal culm spout 15- outer second air spout of lack of gas spout 14- bis- times of 13- bis- times
The adherent wind snout 17- of 16- rectangle wind snout three times
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Embodiment 1:
One kind four as shown in FIG. 1 to FIG. 2 encircles W flame twin-stage bias combustion device, and wherein Fig. 1 is cutting for the utility model
Surface current field schematic diagram, Flow Field Distribution is with burner hearth center line HH ' for the plane of symmetry in figure, and each stock sprays into the speed side of gas stream in the stove in figure
It is marked to arrow is all made of.The burner hearth of described device includes upper furnace body 100, lower furnace body 200 and dry bottom hopper 300, wherein under described
Furnace body 200 is held together to be formed by preceding upper chimney arch 1, rear upper chimney arch 2, front lower chimney arch 3, rear lower chimney arch 4, front wall 5 and the encirclement of rear wall 6；
It is horizontally formed larynx connecting line 7 on a circle on the chimney arch of 200 intersection of the upper furnace body 100 and lower furnace body, before described
Upper chimney arch 1, rear upper chimney arch 2 and front lower chimney arch 3, rear lower 4 intersection of chimney arch chimney arch on form a circle lower larynx connecting line 8；
Be equipped with several the first air port groups on the preceding upper chimney arch 1 and afterwards upper chimney arch 2, each first air port group include by
9, lack of gas spouts 10 of rectangle fire air nozzle that upper larynx connecting line 7 is successively laid to 8 direction of lower larynx connecting line and primary dense
Coal dust spout 11, with a thick coal culm spout 11 with being additionally provided with inner second air spout 12 on circumferential upper chimney arch；
Several the second air port groups are equipped in the front lower chimney arch 3 and afterwards on lower chimney arch 4, each second air port group includes same
Secondary lack of gas spout 13, secondary thick coal culm spout 14 and the outer second air spout 15 circumferentially laid, under the group of second air port
It is equipped with the adherent wind snout 16 of rectangle that a circle horizontal position is laid jointly on the front lower chimney arch 3 of side and rear lower chimney arch 4；
Wind snout 17 three times are respectively equipped on the front wall 5 and rear wall 6；
Above-mentioned each spout is connected with the lower furnace body 200.
Lack of gas spout 10 and a thick coal culm spout 11, inner second air spout 12, secondary lack of gas spout
13, secondary thick coal culm spout 14 and four outer second air spouts 15 are slit spout.
Embodiment 2:
One kind four encircles W flame twin-stage bias combustion device, remaining is with embodiment 1, each of described as shown in FIG. 1 to FIG. 2
First air port group includes above-mentioned thick coal culm spout of lack of gas spout 10, two of two rectangle fire air nozzles 9, two
11 and four inner second air spouts 12；
Two thick coal culm spouts 11 therein and four inner second air spouts 12 put in order from left to right successively
It is sprayed for a thick coal culm of inner second air spout 12, one of thick coal culm spout 11, two of inner second air spout 12, one
Mouth 11 and an inner second air spout 12；
Each of described second air port group includes above-mentioned 13, secondary thick coal culm spouts 14 of a secondary lack of gas spout
And four outer second air spouts 15, putting in order for these spouts are followed successively by an outer second air spout 15, one from left to right
The secondary thick coal culm spout 14 of the outer second air spout 15, one of secondary lack of gas spout 13, two and an outer second air spout 15.
Embodiment 3:
One kind four encircles W flame twin-stage bias combustion device, remaining is with embodiment 2, as shown in FIG. 1 to FIG. 2, the rectangle
The length-width ratio of fire air nozzle 9 is (2.5~3): 1.
The number for the rectangle fire air nozzle (9) that the device is equipped with respectively is 24, and burnout degree rate is 20%.Rectangle
Distance of the fire air nozzle 9 apart from upper 7 place plane of larynx connecting line is h1 (h1=0.9m).
A lack of gas and secondary lack of gas proportion are 3: 1 in described device, and a thick coal culm is with secondary thick coal culm proportion
1.67: 1, inner second air and outer second air proportion are 5: 2.
Front lower chimney arch and rear lower chimney arch are respectively symmetrically dispersed with 11 groups of secondary lack of gas spouts 13, outer two combined with Figure 1 and Figure 2,
Secondary wind snout 15 and secondary thick coal culm spout 14, spout number ratio are 1: 2: 1, the apogee distance lower larynx of outer second air spout 15
The distance h2 of plane where connecting line is 0.7-1.2m.
Spacing K1 between the group of two neighboring second air port is 1.687m.
Inner second air spout 12 is identical as the length of outer second air spout 15, is K2 (K2=2.476m), inner second air
Spout 12 is of same size with outer second air spout 15, is K3 (K3=0.11m).
Lack of gas spout 10 is identical as the length of secondary lack of gas spout 13, is M1 (M1=0.918m), a lack of gas
Spout 10 is of same size with secondary lack of gas spout 13, is M2 (M2=0.11m).
Thick coal culm spout 11 is identical as secondary 14 length of thick coal culm spout, is N1 (N1=1.305m), primary dense
Coal dust spout 11 and secondary thick coal culm spout 14 are of same size, are N2 (N2=0.12m).
Illustrate present embodiment in conjunction with Fig. 2, two adherent air ports of slit are symmetrically opened up on lower chimney arch, adherent wind accounts for
The 7.9% of the total Secondary Air of boiler, wind speed 8.93m/s, the length-width ratio of rectangular jet are (20~24): 1, in front wall and Hou Qiangshui
Cold wall nearby fills into one cold wind, can play a protective role to wall-cooling surface, and adherent wind is swept across into burner hearth with air-flow later
Centre, play further combustion-supporting effect.
The preferred embodiment created to the utility model above is illustrated, but the utility model is created not
It is limited to the embodiment described, those skilled in the art can be under the premise of without prejudice to the utility model creative spirit
Various equivalent variation or replacement are made, these equivalent modifications or replacement are all contained in model defined by the claim of this application
In enclosing.
Claims (7)
1. one kind four encircles W flame twin-stage bias combustion device, which is characterized in that
The burner hearth of described device includes upper furnace body (100), lower furnace body (200) and dry bottom hopper (300), wherein the lower furnace body
(200) chimney arch (2) are gone up by preceding upper chimney arch (1), afterwards, front lower chimney arch (3), chimney arch (4), front wall (5) and rear wall (6) are descended to surround afterwards
It is formed；
Larynx connecting line (7) on a circle are horizontally formed on the chimney arch of the upper furnace body (100) and lower furnace body (200) intersection, it is described
Preceding upper chimney arch (1), afterwards upper chimney arch (2) and front lower chimney arch (3) descend on the chimney arch of chimney arch (4) intersection to be formed a circle lower larynx company afterwards
Wiring (8)；
Be equipped with several the first air port groups on upper chimney arch (2) in the preceding upper chimney arch (1) and afterwards, each first air port group include by
Rectangle fire air nozzle (9) that upper larynx connecting line (7) is successively laid to lower larynx connecting line (8) direction, a lack of gas spout (10)
With a thick coal culm spout (11), with a thick coal culm spout (11) with being additionally provided with inner second air on circumferential upper chimney arch
Spout (12)；
It descends in the front lower chimney arch (3) and afterwards and is equipped with several the second air port groups on chimney arch (4), each second air port group includes same
Secondary lack of gas spout (13), secondary thick coal culm spout (14) and the outer second air spout (15) circumferentially laid, in second wind
Mouth organizes the front lower chimney arch (3) of downside and descends on chimney arch (4) the adherent wind snout of rectangle for being equipped with a circle horizontal position laying jointly afterwards
(16)；
Wind snout (17) three times are respectively equipped on the front wall (5) and rear wall (6)；
Above-mentioned each spout is connected with the lower furnace body (200).
2. four arches W flame twin-stage bias combustion device according to claim 1, which is characterized in that
Each of described first air port group include two above-mentioned rectangle fire air nozzles (9), two lack of gas spouts (10),
Two thick coal culm spouts (11) and four inner second air spouts (12)；
Two thick coal culm spouts (11) therein and four inner second air spouts (12) put in order from left to right successively
For an inner second air spout (12), a thick coal culm spout (11), two inner second air spouts (12), one it is primary dense
Coal dust spout (11) and an inner second air spout (12)；
Each of described second air port group includes an above-mentioned secondary lack of gas spout (13), a secondary thick coal culm spout (14)
And four outer second air spouts (15), the putting in order of these spouts be followed successively by from left to right an outer second air spout (15),
One secondary lack of gas spout (13), two outer second air spouts (15), a secondary thick coal culm spout (14) and one are outer secondary
Wind snout (15).
3. four arches W flame twin-stage bias combustion device according to claim 1, which is characterized in that a lack of gas
Spout (10) and a thick coal culm spout (11), inner second air spout (12), secondary lack of gas spout (13), the spray of secondary thick coal culm
Mouth (14) and four outer second air spouts (15) are slit spout.
4. four arches W flame twin-stage bias combustion device according to claim 1 or 2, which is characterized in that the rectangle combustion
The length-width ratio of wind snout (9) is (2.5~3) to the greatest extent: 1.
5. four arches W flame twin-stage bias combustion device according to claim 1 or 2, which is characterized in that on the device
The number for the rectangle fire air nozzle (9) being equipped with respectively is 24, and burnout degree rate is 20%.
6. four arches W flame twin-stage bias combustion device according to claim 1 or 2, which is characterized in that the rectangle patch
The length-width ratio of wall wind snout (16) is (20~24): 1, adherent wind accounts for the 7.9% of the total Secondary Air of boiler, wind speed 8.93m/s.
7. four arches W flame twin-stage bias combustion device according to claim 2, which is characterized in that primary in described device
Lack of gas and secondary lack of gas proportion are 3: 1, and a thick coal culm and secondary thick coal culm proportion are 1.67: 1, inner second air and outer second air
Proportion is 5: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820776941.8U CN208535967U (en) | 2018-05-23 | 2018-05-23 | One kind four encircles W flame twin-stage bias combustion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820776941.8U CN208535967U (en) | 2018-05-23 | 2018-05-23 | One kind four encircles W flame twin-stage bias combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208535967U true CN208535967U (en) | 2019-02-22 |
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| CN201820776941.8U Expired - Fee Related CN208535967U (en) | 2018-05-23 | 2018-05-23 | One kind four encircles W flame twin-stage bias combustion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758613A (en) * | 2018-05-23 | 2018-11-06 | 中机国能电力工程有限公司 | One kind four encircles W flame twin-stage bias combustion device |
-
2018
- 2018-05-23 CN CN201820776941.8U patent/CN208535967U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758613A (en) * | 2018-05-23 | 2018-11-06 | 中机国能电力工程有限公司 | One kind four encircles W flame twin-stage bias combustion device |
| CN108758613B (en) * | 2018-05-23 | 2024-04-09 | 中机国能电力工程有限公司 | Four-arch W-flame double-stage thick-thin combustion device |
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