CN106287677A - A kind of method of adjustment of W flame direct current cooker secondary wind - Google Patents
A kind of method of adjustment of W flame direct current cooker secondary wind Download PDFInfo
- Publication number
- CN106287677A CN106287677A CN201610644262.0A CN201610644262A CN106287677A CN 106287677 A CN106287677 A CN 106287677A CN 201610644262 A CN201610644262 A CN 201610644262A CN 106287677 A CN106287677 A CN 106287677A
- Authority
- CN
- China
- Prior art keywords
- secondary wind
- wind
- burner hearth
- adjustment
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/06—Regulating air supply or draught by conjoint operation of two or more valves or dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/16—Controlling secondary air
Abstract
The invention discloses the method for adjustment of a kind of W flame direct current cooker secondary wind, described method of adjustment is out to lean on greatly the burner secondary wind air door of burner hearth two side areas；Sagitta 5% ~ 10% after secondary wind throttle opening burner hearth face arch relatively burner hearth；Secondary wind throttle opening is triangularly arranged, and burner hearth central area secondary wind throttle opening is the highest, successively decreases successively to two side secondary air throttle openings.The method of adjustment and the structure thereof that utilize a kind of W flame direct current cooker secondary wind are improved anoxycausis in the middle part of boiler furnace, front and back arch uniformity and are mended wind and both sides clogging problems, improve Combustion Efficiency of Coal Powder further, and safe and stable, the economy of unit are run.
Description
Technical field
The present invention relates to the method for adjustment of a kind of W flame direct current cooker secondary wind, belong to direct current cooker firing optimization field.
Background technology
The W flame direct current cooker putting into operation more at present is transported at high load capacity based on Foster Wheeler W flame boiler, this boiler
The subject matter shown during row is on the low side, burner hearth both sides slagging scorification of oxygen amount etc. in the middle part of burner hearth.Boiler wind speed adjustment is bad, in burner hearth
Portion's anoxycausis, cannot fully burn for hypoxgia coal dust, causes boiler combustion efficiency low, and heat loss of imperfect solid combustion increases
Greatly, unit economy is caused to decline.Burner hearth both sides are not enough owing to mending wind, present reducing atmosphere, and ash fusion point declines induction slagging scorification.
Summary of the invention
The technical problem to be solved in the present invention is to provide the method for adjustment of a kind of W flame direct current cooker secondary wind air distribution, with
Improve anoxycausis in the middle part of boiler furnace, front and back arch uniformity and mend wind and both sides clogging problems, improve coal dust firing effect further
Rate, and safe and stable, the economy operation of unit.
For solving above-mentioned technical problem, the technical solution used in the present invention is to provide a kind of W flame direct current cooker secondary wind
Method of adjustment, described method of adjustment is out to lean on greatly the burner secondary wind air door of burner hearth two side areas；Secondary wind air door is opened
Sagitta 5% ~ 10% after degree burner hearth face arch relatively burner hearth；Secondary wind throttle opening is triangularly arranged, burner hearth central area secondary wind wind
Door aperture is the highest, successively decreases successively to two side secondary air throttle openings.
Described secondary wind has been regulation flame travel and the F wind of coal dust firing.
The secondary wind air distribution method of adjustment using optimization of the present invention improves burner hearth central region anaerobic environment, both sides slagging scorification
And boiler combustion.Through numerous studies and calculating, and the test of bonded boiler cold air dynamic field, learn under different F wind aperture
All showing face arch F wind wind speed low compared with rear arch, air quantity is little compared with rear arch, face arch will be caused to mend wind not enough, coal under the conditions of boiler operatiopn
Powder burning is insufficient, the invention is characterized in that out big face arch F wind, turns down the method for adjustment of rear arch F wind, i.e. face arch F wind relatively rear arch F
Wind big 5% ~ 10%, equalizes forward and backward arch allocation of the amount of air, reduces forward and backward arch thermic load deviation, encircles water screen tube wall temperature before and after improvement
Difference.Oxygen at furnace exit test result understands, and in the middle of stove cross direction, oxygen amount is the most on the low side, and in most cases oxygen amount is even less than
1%, middle past both sides oxygen amount is gradually increased, and causes long term hypoxia burning in the middle part of burner hearth, and coal dust firing is incomplete, big-and-middle by opening
Wind, anaerobic environment in the middle part of improvement are mended by portion, strengthen efficiency of combustion, improve unit operation economy.The most serious for W stove both sides
Slagging scorification situation, opens big both sides corner burner secondary wind, strengthens both sides and mends wind, weakens reducing atmosphere, improve both sides slagging scorification.
The present invention regulates flame travel and coal dust firing accounts for the main F wind mending wind, after secondary wind is opened greatly in the middle part of burner hearth, middle part
The oxygen amount of anoxic zones is necessarily supplemented, and the high efficiency of boiler combustion is improved.
The present invention opens big both sides corner burner secondary wind, and burner hearth both sides reducing atmosphere is improved, and both sides aileron is tied
Slag situation is necessarily alleviated.After front arch secondary air air quantity improves, the burning of burner hearth face arch strengthens, and stability improves, front-back wall water
Cold wall pipe wall temperature difference diminishes.
In sum, technical scheme is used can to solve anoxycausis in the middle part of boiler furnace completely, front and back encircle
Uniformity mends wind and the operation Current Situation of both sides slagging scorification, can further improve Combustion Efficiency of Coal Powder, and unit is safe, steady
Fixed, economy is run.The present invention easily implements, practice examining effect is the best, uses the air distribution combustion adjustment mode of the present invention
After, i.e. it is not required to existing equipment be improved and adjusts, outputs without extra cost；Therefore good warp can be brought to fired power generating unit
Ji benefit, has the meaning of popularization.
Accompanying drawing explanation
Fig. 1 is burner arrangement figure of the present invention；
Fig. 2 is that burner secondary wind air distribution of the present invention adjusts instance graph.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can be with reference to description
It is carried out.
Embodiment: as it is shown in figure 1, arch is provided with burner before and after burner hearth 1, burner includes front and back encircleing each row,
Often row arranges 12 burners, front-seat burner be from left to right followed successively by D3, E3, F3, D4, E4, F4, A3, B3, C3, A4,
B4, C4, heel row burner is from left to right followed successively by C1, B1, A1, C2, B2, A2, F1, E1, D1, F2, E2, D4, two row's burners
From left to right position is corresponding in turn to place.
Boiler Furnace cross direction carries out secondary wind air distribution adjustment according to following method of adjustment:
A. opening greatly by the secondary wind by burner hearth two side areas burner, wherein the number of burners by burner hearth two side areas is four
Only, respectively C1, C4, D2, D3；
B. burner hearth front arch secondary air aperture is compared with rear arch secondary wind aperture big 5% ~ 10%；
C. secondary wind aperture is triangularly arranged, and burner hearth central area the highest (corresponding burner is A2, A3, F1, F4), to both sides
Successively decrease successively.
Secondary wind aperture is distributed as shown in Figure 2, is adjusted by air distribution, and both sides slagging scorification situation is necessarily alleviated, and boiler exists
During heavy-duty service, in the middle of burner hearth, oxygen amount improves 0.5% ~ 1%, and front and back arch water-cooling wall wall temperature difference reduces by 5 DEG C ~ 10 DEG C.
Claims (2)
1. the method for adjustment of a W flame direct current cooker secondary wind, it is characterised in that: described method of adjustment is out to lean on burner hearth greatly
The burner secondary wind air door of two side areas；Sagitta 5% ~ 10% after secondary wind throttle opening burner hearth face arch relatively burner hearth；Secondary wind wind
Door aperture is triangularly arranged, and burner hearth central area secondary wind throttle opening is the highest, passs successively to two side secondary air throttle openings
Subtract.
The method of adjustment of a kind of W flame direct current cooker secondary wind the most according to claim 1, it is characterised in that: described two
Secondary wind has been regulation flame travel and the F wind of coal dust firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644262.0A CN106287677B (en) | 2016-08-09 | 2016-08-09 | A kind of method of adjustment of W flame direct current cooker Secondary Air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644262.0A CN106287677B (en) | 2016-08-09 | 2016-08-09 | A kind of method of adjustment of W flame direct current cooker Secondary Air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106287677A true CN106287677A (en) | 2017-01-04 |
| CN106287677B CN106287677B (en) | 2019-04-02 |
Family
ID=57666431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610644262.0A Active CN106287677B (en) | 2016-08-09 | 2016-08-09 | A kind of method of adjustment of W flame direct current cooker Secondary Air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106287677B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505146A (en) * | 1995-05-02 | 1996-04-09 | The Babcock & Wilcox Company | Burner pattern to minimize sidewall corrosion potential |
| CN102322631A (en) * | 2011-07-08 | 2012-01-18 | 贵州电力试验研究院 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
| CN102777893A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
| CN103225818A (en) * | 2013-04-09 | 2013-07-31 | 湖南省湘电试研技术有限公司 | Secondary air box structure of coal-fired W-flame boiler in power station |
| CN103672950A (en) * | 2013-10-17 | 2014-03-26 | 贵州电力试验研究院 | Method for combustion adjustment of W-type flame furnace with under-arch secondary air at adjustable down-dip angle |
| CN104913299A (en) * | 2015-06-01 | 2015-09-16 | 东南大学 | W flame boiler burner and air distribution method thereof |
| CN205014343U (en) * | 2015-10-12 | 2016-02-03 | 大唐华银株洲发电有限公司 | W flame boiler |
-
2016
- 2016-08-09 CN CN201610644262.0A patent/CN106287677B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505146A (en) * | 1995-05-02 | 1996-04-09 | The Babcock & Wilcox Company | Burner pattern to minimize sidewall corrosion potential |
| CN102322631A (en) * | 2011-07-08 | 2012-01-18 | 贵州电力试验研究院 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
| CN102777893A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
| CN103225818A (en) * | 2013-04-09 | 2013-07-31 | 湖南省湘电试研技术有限公司 | Secondary air box structure of coal-fired W-flame boiler in power station |
| CN103672950A (en) * | 2013-10-17 | 2014-03-26 | 贵州电力试验研究院 | Method for combustion adjustment of W-type flame furnace with under-arch secondary air at adjustable down-dip angle |
| CN104913299A (en) * | 2015-06-01 | 2015-09-16 | 东南大学 | W flame boiler burner and air distribution method thereof |
| CN205014343U (en) * | 2015-10-12 | 2016-02-03 | 大唐华银株洲发电有限公司 | W flame boiler |
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| Publication number | Publication date |
|---|---|
| CN106287677B (en) | 2019-04-02 |
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