CN2711559Y - Composite multi function dc burner distributed in boiler with round four corners - Google Patents
Composite multi function dc burner distributed in boiler with round four corners Download PDFInfo
- Publication number
- CN2711559Y CN2711559Y CN 03210732 CN03210732U CN2711559Y CN 2711559 Y CN2711559 Y CN 2711559Y CN 03210732 CN03210732 CN 03210732 CN 03210732 U CN03210732 U CN 03210732U CN 2711559 Y CN2711559 Y CN 2711559Y
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- China
- Prior art keywords
- nozzle opening
- wind
- spout
- axis
- property regulation
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 210000004894 snout Anatomy 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 24
- 239000002817 coal dust Substances 0.000 claims description 17
- 239000003245 coal Substances 0.000 abstract description 16
- 239000000843 powder Substances 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000000571 coke Substances 0.000 abstract 1
- 238000005536 corrosion prevention Methods 0.000 abstract 1
- 239000010881 fly ash Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 230000001464 adherent effect Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Abstract
The utility model relates to a composite multi-function direct flow burner distributed on the tetragonal circle cutting burning boiler. The utility model is sequentially provided with a performance adjustable air III nozzle opening, a secondary air nozzle opening, a coal fines horizontal dense and thin primary air nozzle opening which has tapered upper and lower sides and the fire back sides, a performance adjustable air II nozzle opening, another coal fines horizontal dense and thin primary air nozzle opening which has tapered upper and lower sides and the fire back sides, and another secondary air nozzle opening. The fire back side of the coal fines horizontal dense and thin primary air nozzle opening which has tapered upper and lower sides and the fire back sides is provided with a performance adjustable air I nozzle opening. The axial line of the primary air nozzle opening and the axial line of the performance adjustable air III nozzle opening are deviated from the axial line of the secondary air nozzle opening and deviated to a fire facing side. The performance adjustable air II nozzle opening is folded to the cold water wall side by a part of the flow passage of the secondary air nozzle opening. The utility model has the advantages of broad application range of the coal quality, the slagging (coke)of the cold water wall prevention, high-temperature corrosion prevention, low load, stable combustion, low NOx emission, low fly ash slag combustible content, minor deviation of the flume temperature at furnace outlet, self-adjusting performance, anti-deviation of the tetragonal air powder, etc.
Description
Technical field
The utility model relates to a kind of composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler.
Background technology
Burner hearth slagging scorification accident often takes place owing to reasons such as coal, chamber structure and combustion systems in pulverized coal firing boiler, influences the safety and economic operation of boiler.Particularly for the boiler that uses low ash smelting point, coal that ash deposition propensity is strong, the slagging scorification accident takes place especially easily.In order to prevent slagging scorification, some boiler has adopted low furnace load at present, but causes the boiler cost to rise and the reduction efficiency of combustion; Some boiler has adopted the Concentric Counter-tangential system of a secondary elegance with the different burning circle of contacts, but because secondary wind spinning momentum is big, the turbulent dispersion of pulverized coal particle, cause the Concentric Counter-tangential system in that to use the ash fusion point spy low, still slagging scorification easily during the strong coal of ash deposition propensity, and influence combustion stability easily.
Summary of the invention
The purpose of this utility model provides a kind of composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler.
It has wind snout of coal dust horizontal bias, another overfire air port of wind snout of coal dust horizontal bias, property regulation wind II spout, upper and lower sides and the back-fire side convergent of property regulation wind III spout, overfire air port, upper and lower sides and back-fire side convergent successively, wind snout back-fire side of the coal dust horizontal bias of another upper and lower sides and back-fire side convergent is provided with property regulation wind I spout, a wind snout axis runout overfire air port axis, property regulation wind II spout adopts and is folded to spout, and a part of runner of overfire air port is folded to the water-cooling wall side.
The utlity model has the wide ature of coal scope of application, anti-water-cooling wall slagging scorification (Jiao), high temperature corrosion resistance, low-load combustion-stabilizing, low-nitrogen oxide discharging, low flying dust unburned combustible in slag, less furnace outlet gas temperature deviation, self-tuning performance, anti-four jiaos of advantages such as wind powder deviation.
Wind snout of gradual shrinkage improves the rigidity of primary air jet, reduced centrifugation and the adherent trend of spin intensity in the stove simultaneously to have reduced pulverized coal particle, one time the wind snout back-fire side is arranged property regulation wind I, the primary air jet back-fire side is improved near the oxygen amount in water-cooling wall zone, descend by the water-cooling wall temperatures at localized regions, reach the purpose that prevents the water-cooling wall slagging scorification.The Application of composite of wind of deflection, property regulation wind I and property regulation wind II helps primary air jet and slows down with mixing of secondary wind, improves coal powder density, helps catching fire and steady combustion.Simultaneously because on the horizontal cross-section and the air stage feeding on the short transverse, discharge and have certain effect reducing the boiler combustion nitrogen oxide.
Description of drawings
Fig. 1 is furnished with composite multi-functional direct current combustion device tangentially-fired boiler structural representation;
Fig. 2 is the utility model composite multi-functional direct current combustion device furnace profile layout drawing;
Fig. 3 is wind snout structural representation of the utility model composite multi-functional direct current combustion device, and wherein (a) is side view, (b) is vertical view, and 12 sides are the side of waring oneself in front of a fire among Fig. 3 (b), and 13 sides are back-fire side among Fig. 3 (b).
The specific embodiment
The composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler 15 has property regulation wind III spout 5 successively, overfire air port 4, wind snout 1 of the coal dust horizontal bias of upper and lower sides and back-fire side convergent, property regulation wind II spout 3, wind snout of the coal dust horizontal bias of upper and lower sides and back-fire side convergent 1 overfire air port 4, wind snout 1 back-fire side of the coal dust horizontal bias of upper and lower sides and back-fire side convergent is provided with property regulation wind I spout 2, wind snout 1 axis runout overfire air port 4 axis, property regulation wind II spout 3 adopts and is folded to spout, and a part of runner of overfire air port 4 is folded to the water-cooling wall side.
The taper angle of a wind snout 1 is 2～15 degree, and wind snout 1 axis overfire air port 4 axis angle ψ are 3～10 degree.Property regulation wind I spout 2 is arranged in wind snout 1 back-fire side one time, and the angle theta of property regulation wind I spout 2 axis and water-cooling wall is 5～40 degree.The angle ω of property regulation wind II spout 3 axis and water-cooling wall is 5～40 degree.Property regulation wind III spout 5 axis are 3～10 degree with departing from overfire air port 4 axis angle ψ.
A wind snout that is arranged in the composite multi-functional direct current combustion device employing of tangentially-fired boiler has the coal dust horizontal bias version of upper and lower sides convergent and back-fire side convergent, the side of waring oneself in front of a fire of a wind snout does not adopt the convergent form, like this when having improved wind outlet coal dust air-spray rigidity, because the effect of gradual shrinkage spout, cause coal dust to concentrate on jet central authorities relatively, reduced the trend that the pulverized coal particle that causes because of jet diffusion and turbulent dispersion moves to water-cooling wall.Adopt a wind snout back-fire side convergent and the not form of convergent of side of waring oneself in front of a fire helps making coal dust to waring oneself in front of a fire lateral movement, both helped coal dust fire burns, also help preventing pulverized coal particle the adherent of fiery side wall of supporting or opposing.
Wind snout axis runout overfire air port axis certain angle side of waring oneself in front of a fire, upstream, the contrary top of primary air jet incoming flow, helping a wind catches fire, can prevent that again washed away by the upstream incoming flow adherent because of primary air jet, upstream, a contrary top of wind incoming flow helps reducing the spin intensity in the stove simultaneously, can weaken pulverized coal particle pastes water-cooling wall owing to centrifugation trend.The selection of the deflection angle of primary air jet is to guarantee that the gas stream in the stove direction of rotation is constant, generally speaking, because the pneumatic amount of secondary is bigger, adopts a less windage yaw corner can not influence turning to of gas stream in the stove.
One time the wind snout back-fire side is arranged property regulation wind I, property regulation wind I spout axis is between overfire air port axis and water-cooling wall, and between water-cooling wall and the overfire air port axis certain angle is arranged all, promptly neither parallel with wall-cooling surface, not parallel with the overfire air port axis yet, this arrangement can form one deck wind film between burner hearth master combustion zone and water-cooling wall, reduce burner region water-cooling wall temperature, improve near the oxygen amount of water-cooling wall, reduce near the reducing atmosphere of water-cooling wall to reach anti-slag purpose; Realize that simultaneously the section air stage feeding is to reach the generation that reduces nitrogen oxide.
The utility model is arranged property regulation wind II between a two-layer wind, property regulation wind II can adopt the direct current spout, also can adopt the distinguished and admirable road of part secondary to be folded to formation and be folded to secondary wind, all the other secondary wind still spray in the stove by former axis, this part angle that is folded to secondary wind and water-cooling wall forms certain angle, between former secondary wind axis line and wall-cooling surface, so that between burner hearth master combustion zone and water-cooling wall, form one deck wind film.Except that being folded to secondary wind, all the other secondary wind still spray in the stove by former axis, can in time provide oxygenating for after once wind catches fire, and make coal dust firing complete.
In the sets of burners top layout property regulation wind III is arranged, property regulation wind III also departs from the secondary wind certain angle side of waring oneself in front of a fire and sprays into.Property regulation wind III is arranged on the sets of burners the superiors secondary wind, plays the effect that guarantees the coal dust after-flame and weaken the gas stream in the stove spin intensity.The input of property regulation wind III can form the air classification on the short transverse in stove, thereby reaches the effect that reduces discharged nitrous oxides and reduce the furnace outlet gas temperature deviation.
Because one time wind deflector is arranged, the elegance coal dust horizontal bias spout form of upper and lower sides and back-fire side convergent, and wind back-fire side arranges property regulation wind I and the compound uses of multiple mode such as property regulation wind II between two layers of wind snout, and this combustion system has the wide ature of coal scope of application, anti-water-cooling wall slagging scorification (Jiao), high temperature corrosion resistance, low-load combustion-stabilizing, low-nitrogen oxide discharging, low flying dust unburned combustible in slag, less furnace outlet gas temperature deviation, self-tuning performance, anti-four jiaos of advantages such as wind powder deviation.
As shown in Figure 2, (6) are wind snout and property regulation wind III spout axis; (7) be the overfire air port central axis; (8) be property regulation wind I spout central axis; (9) be to be folded to the overfire air port central axis among the property regulation wind II.
As shown in Figure 3, (10), (11) are respectively the tapered configuration of a wind snout upper and lower sides among the figure, and (12) are the back-fire side tapered configuration, and the spout side (13) of waring oneself in front of a fire adopts slab construction, no convergent.
Claims (5)
1. composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler, it is characterized in that it has property regulation wind III spout (5) successively, overfire air port (4), a wind snout of the coal dust horizontal bias of upper and lower sides and back-fire side convergent (1), property regulation wind II spout (3), a wind snout of the coal dust horizontal bias of upper and lower sides and back-fire side convergent (1) overfire air port (4), a wind snout of the coal dust horizontal bias of upper and lower sides and back-fire side convergent (1) back-fire side is provided with property regulation wind I spout (2), a wind snout (1) axis runout overfire air port (4) axis, property regulation wind II spout (3) adopts and is folded to spout, and a part of runner of overfire air port (4) is folded to the water-cooling wall side.
2. a kind of composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler according to claim 1, the taper angle that it is characterized in that a said wind snout (1) is 2～15 degree, and wind snout (1) axis and overfire air port (4) axis angle ψ 3～10 spend.
3. a kind of composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler according to claim 1, it is characterized in that said property regulation wind I spout (2) is arranged in a wind snout (1) back-fire side, the angle theta of property regulation wind I spout (2) axis and water-cooling wall is 5～40 degree.
4. a kind of composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler according to claim 1 is characterized in that the angle of said property regulation wind II spout (3) axis and water-cooling wall
Be 5～40 degree.
5. a kind of composite multi-functional direct current combustion device that is arranged in tangentially-fired boiler according to claim 1 is characterized in that said property regulation wind III spout (5) axis is 3～10 degree with departing from overfire air port (4) axis angle ψ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210732 CN2711559Y (en) | 2003-09-16 | 2003-09-16 | Composite multi function dc burner distributed in boiler with round four corners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210732 CN2711559Y (en) | 2003-09-16 | 2003-09-16 | Composite multi function dc burner distributed in boiler with round four corners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711559Y true CN2711559Y (en) | 2005-07-20 |
Family
ID=36192664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03210732 Expired - Fee Related CN2711559Y (en) | 2003-09-16 | 2003-09-16 | Composite multi function dc burner distributed in boiler with round four corners |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711559Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297422A (en) * | 2011-09-21 | 2011-12-28 | 北京博惠通科技发展有限公司 | Burn-out wind combustion device and method with low NOx emission |
| CN102705819A (en) * | 2012-06-22 | 2012-10-03 | 上海锅炉厂有限公司 | Closing-to-wall air combustion system for boiler burner |
| CN103225805A (en) * | 2013-04-24 | 2013-07-31 | 广东电网公司电力科学研究院 | Boiler apparatus for preventing high temperature corrosion of water screen |
| CN104344399A (en) * | 2013-08-05 | 2015-02-11 | 烟台龙源电力技术股份有限公司 | Wall-attached wind nozzle, boiler and boiler system |
| CN106678783A (en) * | 2017-02-24 | 2017-05-17 | 国电科学技术研究院 | Combustion optimization system and adjustment method for preventing water wall high-temperature corrosion |
-
2003
- 2003-09-16 CN CN 03210732 patent/CN2711559Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297422A (en) * | 2011-09-21 | 2011-12-28 | 北京博惠通科技发展有限公司 | Burn-out wind combustion device and method with low NOx emission |
| CN102297422B (en) * | 2011-09-21 | 2013-04-17 | 北京博惠通科技发展有限公司 | Burn-out wind combustion device and method with low NOx emission |
| CN102705819A (en) * | 2012-06-22 | 2012-10-03 | 上海锅炉厂有限公司 | Closing-to-wall air combustion system for boiler burner |
| CN103225805A (en) * | 2013-04-24 | 2013-07-31 | 广东电网公司电力科学研究院 | Boiler apparatus for preventing high temperature corrosion of water screen |
| CN103225805B (en) * | 2013-04-24 | 2015-03-18 | 广东电网公司电力科学研究院 | Boiler apparatus for preventing high temperature corrosion of water screen and method therefor |
| CN104344399A (en) * | 2013-08-05 | 2015-02-11 | 烟台龙源电力技术股份有限公司 | Wall-attached wind nozzle, boiler and boiler system |
| CN104344399B (en) * | 2013-08-05 | 2017-03-15 | 烟台龙源电力技术股份有限公司 | Adherent wind snout and boiler, steam generator system |
| CN106678783A (en) * | 2017-02-24 | 2017-05-17 | 国电科学技术研究院 | Combustion optimization system and adjustment method for preventing water wall high-temperature corrosion |
| CN106678783B (en) * | 2017-02-24 | 2018-10-19 | 国电科学技术研究院 | A kind of combustion optimizing system and method for adjustment preventing water wall high temperature corrosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |