CN106287677B - A kind of method of adjustment of W flame direct current cooker Secondary Air - Google Patents
A kind of method of adjustment of W flame direct current cooker Secondary Air Download PDFInfo
- Publication number
- CN106287677B CN106287677B CN201610644262.0A CN201610644262A CN106287677B CN 106287677 B CN106287677 B CN 106287677B CN 201610644262 A CN201610644262 A CN 201610644262A CN 106287677 B CN106287677 B CN 106287677B
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- China
- Prior art keywords
- secondary air
- burner hearth
- adjustment
- direct current
- wind
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of method of adjustment of W flame direct current cooker Secondary Air, the method for adjustment is out to lean on the burner Secondary Air air door of burner hearth two side areas greatly；Secondary Air throttle opening burner hearth face arch is compared with sagitta 5% ~ 10% after burner hearth；Secondary Air throttle opening is triangularly arranged, burner hearth central area Secondary Air throttle opening highest, until two side secondary air throttle openings successively successively decrease.Wind and two sides clogging problems are mended using anoxycausis, front and back arch uniformity in the middle part of the method for adjustment and its structural improvement boiler furnace of a kind of W flame direct current cooker Secondary Air, further increase Combustion Efficiency of Coal Powder and the safe and stable of unit, economy operation.
Description
Technical field
The present invention relates to a kind of methods of adjustment of W flame direct current cooker Secondary Air, belong to direct current cooker firing optimization field.
Background technique
Based on Foster Wheeler W flame boiler, which transports the W flame direct current cooker for putting into operation at present more in high load capacity
The main problem shown during row is relatively low, burner hearth two sides slagging of oxygen amount etc. in the middle part of burner hearth.Boiler wind speed adjustment is bad, in burner hearth
Portion's anoxycausis is unable to 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 two sides are insufficient due to mending wind, and reducing atmosphere is presented, and ash fusion point decline induces slagging.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method of adjustment of W flame direct current cooker Secondary Air air distribution, with
Improve anoxycausis in the middle part of boiler furnace, front and back arch uniformity benefit wind and two sides clogging problems, further increases coal dust firing effect
Rate and the safe and stable of unit, economy operation.
In order to solve the above technical problems, the technical solution adopted by the present invention is that providing a kind of W flame direct current cooker Secondary Air
Method of adjustment, the method for adjustment be out greatly lean on burner hearth two side areas burner Secondary Air air door；Secondary Air air door is opened
Burner hearth face arch is spent compared with sagitta 5% ~ 10% after burner hearth；Secondary Air throttle opening is triangularly arranged, burner hearth central area Secondary Air wind
Door aperture highest, until two side secondary air throttle openings successively successively decrease.
The Secondary Air has been the F wind for adjusting flame travel and coal dust firing.
Burner hearth central region anaerobic environment, two sides slagging are improved using the Secondary Air air distribution method of adjustment that the present invention optimizes
And boiler combustion.By numerous studies and calculating, and bonded boiler cold air dynamic field is tested, and is learnt under different F wind apertures
It shows that face arch F wind wind speed is low compared with rear arch, and air quantity is small compared with rear arch, face arch will be caused to mend wind under the conditions of boiler operatiopn insufficient, coal
Powder burning is insufficient, the invention is characterized in that the method for adjustment opened big face arch F wind, turn down rear arch F wind, i.e., face arch F wind is compared with rear arch F
Wind is big by 5% ~ 10%, and balanced forward and backward arch allocation of the amount of air reduces forward and backward arch thermic load deviation, improves front and back and encircles water screen tube wall temperature
Difference.Oxygen at furnace exit test result is it is found that oxygen amount is seriously relatively low among furnace wide direction, and oxygen amount is even less than in most cases
1%, it is intermediate to be gradually increased toward two sides oxygen amount, lead to long term hypoxia burning in the middle part of burner hearth, coal dust firing is incomplete, big-and-middle by opening
Wind is mended in portion, improves middle part anaerobic environment, and strengthen burning efficiency improves unit performance driving economy.It is more serious for W furnace two sides
Slagging situation opens big two sides corner burner Secondary Air, and enhancing two sides mend wind, weaken reducing atmosphere, improves two sides slagging.
The present invention adjusts flame travel and coal dust firing accounts for the main F wind for mending wind, after Secondary Air is opened greatly in the middle part of burner hearth, middle part
The oxygen amount of anoxic zones is centainly supplemented, and the high efficiency of boiler combustion is improved.
The present invention opens big two sides corner burner Secondary Air, and burner hearth two sides reducing atmosphere is improved, two sides aileron knot
Slag situation is centainly alleviated.After front arch secondary air air quantity improves, burner hearth face arch burning enhancing, stability improves, front-back wall water
Cold wall pipe wall temperature difference becomes smaller.
In conclusion can solve anoxycausis in the middle part of boiler furnace, front and back arch completely using technical solution of the present invention
Uniformity mends the operation Current Situation of wind and two sides slagging, can further improve the safe, steady of Combustion Efficiency of Coal Powder and unit
Fixed, economy operation.The easy implementation of the present invention, practice examining effect are very good, using air distribution combustion adjustment mode of the invention
Afterwards, that is, it is not required to that existing equipment is improved and adjusted, no extra cost is outputed；Therefore good warp can be brought to fired power generating unit
Ji benefit, has the meaning promoted.
Detailed description of the invention
Fig. 1 is burner arrangement figure of the present invention；
Fig. 2 is that burner Secondary Air air distribution of the present invention adjusts instance graph.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, so that those skilled in the art can be referring to specification
It is carried out.
Embodiment: as shown in Figure 1, arch is equipped with burner before and after burner hearth 1, burner includes that each row is encircleed in front and back,
Every row is arranged 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 are from left to right followed successively by C1, B1, A1, C2, B2, A2, F1, E1, D1, F2, E2, D4, two rows of burners
From left to right position is corresponding in turn to placement.
Boiler Furnace wide direction carries out the adjustment of Secondary Air air distribution according to following method of adjustment:
A. it will be opened greatly by the Secondary Air of burner hearth two side areas burner, wherein the number of burners by burner hearth two side areas is
Four, respectively C1, C4, D2, D3；
B. burner hearth front arch secondary air aperture is big by 5% ~ 10% compared with rear arch Secondary Air aperture；
C. Secondary Air aperture is triangularly arranged, burner hearth central area highest (corresponding burner is A2, A3, F1, F4), until
Successively successively decrease two sides.
Secondary Air aperture is distributed as shown in Figure 2, is adjusted by air distribution, two sides slagging situation is centainly alleviated, and boiler exists
When heavy-duty service, oxygen amount improves 0.5% ~ 1% among burner hearth, and water-cooling wall wall temperature difference is encircleed in front and back reduces by 5 DEG C ~ 10 DEG C.
Claims (2)
1. a kind of method of adjustment of W flame direct current cooker Secondary Air, it is characterised in that: the method for adjustment is out to lean on burner hearth greatly
The burner Secondary Air air door of two side areas；Secondary Air throttle opening burner hearth face arch is compared with sagitta 5% ~ 10% after burner hearth；Secondary Air wind
Door aperture is triangularly arranged, burner hearth central area Secondary Air throttle opening highest, until two side secondary air throttle openings are successively passed
Subtract.
2. a kind of method of adjustment of W flame direct current cooker Secondary Air according to claim 1, it is characterised in that: described two
Secondary wind has been the F wind for adjusting flame travel and 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 CN106287677A (en) | 2017-01-04 |
| CN106287677B true 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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|---|---|
| CN106287677A (en) | 2017-01-04 |
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