CN102322631A - Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal - Google Patents
Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal Download PDFInfo
- Publication number
- CN102322631A CN102322631A CN201110190669A CN201110190669A CN102322631A CN 102322631 A CN102322631 A CN 102322631A CN 201110190669 A CN201110190669 A CN 201110190669A CN 201110190669 A CN201110190669 A CN 201110190669A CN 102322631 A CN102322631 A CN 102322631A
- Authority
- CN
- China
- Prior art keywords
- air
- nozzle
- spout
- wind
- secondary air
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal. The boiler consists of a lower hearth (1), an upper hearth (2), a front-rear arch (3) and a front-rear wall water cooling wall (4); the lower part of the front-rear wall water cooling wall (4) is provided with a secondary air nozzle; the front-rear arch (3) is provided with a primary air nozzle (6), a gas exhaust nozzle (7) and a secondary air C nozzle (5); and the air outlet of the secondary air C nozzle (5) and the vertical direction form an included angle of 1-10 degrees. According to the invention, the secondary air C nozzle and the vertical direction form a fixed included angle and form a group of closely parallel air stream with the primary air, thus the interferences of the secondary air at the C nozzle to the main pulverized coal air stream of the primary air can be reduced, the burning stability is improved, also the secondary air entering from the secondary air C nozzle also can supply air in the course of burning of the main pulverized coal air stream under the tilting angle, and better burning rate is achieved.
Description
Technical field
The present invention relates to a kind of W type flame furnace, particularly relate to a kind of bispin air duct burner-W type flame boiler of stable coal dust firing.
Background technology
W type flame boiler is mainly used in burning low-volatile coal; Existing bispin air duct burner-W type flame boiler (as shown in Figure 2) has following characteristics usually: wind snout 6 of breeze airflow, weary gas blowout mouth 7 are arranged on the arch; Secondary wind B6-1, A7-1, C spout 5 are arranged on the arch, and secondary wind D8, E9, F10 are arranged in arch front-back wall down.Conventional bispin air duct type burner W flame boiler F wind snout (10) is a horizontal direction; This boiler adds the wind difficulty when having high load capacity; Problems such as steady combustion, after-flame poor performance, after process transformation F wind snout 10 had a down dip at a certain angle, the burning economy had greatly improved; But still have the relatively poor situation of high load capacity combustion stability, especially when the ature of coal fluctuation is bigger.
For further improving the combustion case of W type flame boiler; The applicant has carried out a large amount of tests and research to each air port at the scene; Show according to on-the-spot ruuning situation: the switch of secondary wind C spout 5 has considerable influence to burning economy and stability, and when ature of coal was better, secondary wind C spout 5 was left; The burning economy is greatly improved, and combustion stability is also better; When ature of coal was relatively poor, secondary wind C spout 5 was left, the obvious variation of combustion stability, and coal is imitated step-down, and therefore how adjusting secondary wind C spout is the problem that we need solve.
Summary of the invention
The technical problem that the present invention will solve provides the bispin air duct burner-W type flame boiler of a kind of flameholding, stable coal dust firing that efficient is high, to overcome the deficiency of prior art.
Technical scheme of the present invention is: it is made up of lower hearth, upper furnace, front and back arch and front-back wall water-cooling wall; Bottom at the front-back wall water-cooling wall has overfire air port; On the arch of front and back, have wind snout, weary gas blowout mouth and secondary wind C spout one time, the air outlet of secondary wind C spout and the angle between the vertical direction are 0～10 °.
Compare with prior art, beneficial effect of the present invention at first is embodied in the proposition of problem, and promptly the air-out direction of secondary wind C spout is to the influence of combustion stability.The proposition of this problem is that the applicant draws through a large amount of experimental studies; Its theory is: the secondary wind C spout and the vertical direction of existing bispin air duct burner-W type flame boiler are 25 ° of angles; Wind and vertical direction are 5 ° of angles, after secondary wind C spout is left, through the distance of about 1.4m promptly and a wind master breeze airflow collide; Influence following the dashing of a wind master coal dust, simultaneously the coal dust that is in the stage of catching fire has been caused certain interference.When ature of coal was better, the breeze airflow ignition distance was shorter, and the furnace flame central temperature is higher, and the secondary wind of secondary wind C spout is little to the coal dust firing influence; When the ature of coal variation, the breeze airflow ignition distance is elongated, and this moment, the secondary wind of C spout reduced burner fire area temperature, causes the breeze airflow difficulty of catching fire, the combustion stability variation.
For addressing the above problem, the present invention makes secondary wind C spout and vertical direction be a fixing little angle through the air-out direction of adjustment bispin air duct burner-W type flame boiler secondary wind C spout; Constitute the nearly parallel airflow of a winding with a wind, the secondary wind of C spout just can reduce the interference to the main breeze airflow of a wind like this, improves the stability of burning; And the secondary wind that under this inclination angle, gets into from secondary wind C spout also can carry out mending wind along journey to main breeze airflow burning; Reach combustion rate preferably, according to statistics, average burning rate can improve 3%; Use the relatively poor fire coal of ature of coal, combustion rate can improve 5%.Adjusted secondary wind C spout leans on the front-back wall side group, and this dashes under vertical, helps increasing the oxidizing atmosphere by the front-back wall side, helps preventing the front-back wall slagging scorification.The present invention simultaneously is simple in structure, only needs simple modification or transformation just can accomplish, and compares burner of the same type, and it is good to have combustion stability, the characteristics that efficiency of combustion is high.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of existing bispin air duct burner-W type flame boiler;
Fig. 3 is that A is to view.
The specific embodiment
Embodiment: the structure of bispin air duct burner-W type flame boiler is as shown in figures 1 and 3; It is made up of lower hearth 1, upper furnace 2, front and back arch 3 and front-back wall water-cooling wall 4; Have symmetrical overfire air port D8, E9, F10 in the bottom of front-back wall water-cooling wall 4, on front and back arch 3, have wind snout 6, weary gas blowout mouth 7 and secondary wind C spout 5 and secondary wind B6-1 and secondary wind A7-1 one time; Weary gas blowout mouth 7 is driveed on front and back arch 3 and is leaned on the burner hearth central side; Secondary wind C spout is driveed on front and back arch 3 and is leaned on the front-back wall side; A wind snout 6 is driveed on front and back arch 3 and is lacked between gas blowout mouth 7 and the secondary wind C spout 5, and one time wind snout 6 is 5 ° of angles with weary gas blowout mouth 7 with vertical direction.The air outlet of secondary wind C spout 5 and vertical direction are 0～10 ° angle, preferred 5 °; The above each spout is that the plane of symmetry is arranged with the burner hearth center all.
In the concrete course of work, secondary wind C spout 5 and a wind 6 are the two groups of parallel jets of formation that are arranged in parallel, about 15 m/s of wind 6 wind speed; Secondary wind C spout 5 about 30 m/s are simultaneously because secondary wind C spout 5 is bigger, so the rigidity of secondary wind C spout 5 jets is stronger; With the downward diffusion jet process of wind 6 in; Can effectively stablize the wind pulverized coal flame one time, again wind 6 coal dust firings carried out mending wind along journey simultaneously, the factor of this two aspect makes combustion stability be enhanced.
Claims (2)
1. the bispin air duct burner of a stable coal dust firing-W type flame boiler; It is made up of lower hearth (1), upper furnace (2), front and back arches (3) and front-back wall water-cooling wall (4); Bottom at front-back wall water-cooling wall (4) has overfire air port; On front and back arches (3), have a wind snout (6), weary gas blowout mouth (7) and secondary wind C spout (5), it is characterized in that: the air outlet of secondary wind C spout (5) and the angle between the vertical direction are 0～10 °.
2. the bispin air duct burner of stable coal dust firing according to claim 1-W type flame boiler, it is characterized in that: the air outlet of secondary wind C spout (5) and the angle between the vertical direction are 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190669A CN102322631A (en) | 2011-07-08 | 2011-07-08 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190669A CN102322631A (en) | 2011-07-08 | 2011-07-08 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102322631A true CN102322631A (en) | 2012-01-18 |
Family
ID=45450428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110190669A Pending CN102322631A (en) | 2011-07-08 | 2011-07-08 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322631A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN106247322A (en) * | 2016-07-28 | 2016-12-21 | 哈尔滨工业大学 | The W flame boiler that a kind of weary gas windage yaw is put |
| CN106287677A (en) * | 2016-08-09 | 2017-01-04 | 贵州电网有限责任公司电力科学研究院 | A kind of method of adjustment of W flame direct current cooker secondary wind |
| CN108758615A (en) * | 2018-06-22 | 2018-11-06 | 东方电气集团东方锅炉股份有限公司 | Quadrangle tangential circle pulverized coal firing boiler and coal generating system |
| CN109945167A (en) * | 2019-03-11 | 2019-06-28 | 哈尔滨工业大学 | A kind of front wall, the asymmetrical W flame boiler of rear wall Secondary Air |
| CN114165780A (en) * | 2021-11-01 | 2022-03-11 | 东方电气集团东方锅炉股份有限公司 | W flame boiler combustion device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268403A (en) * | 1988-09-02 | 1990-03-07 | Babcock Hitachi Kk | Solid fuel burner |
| CN101158472A (en) * | 2007-11-21 | 2008-04-09 | 北京交通大学 | W flame boiler primary air waste-steam replacement method and apparatus for |
| CN102297421A (en) * | 2011-06-27 | 2011-12-28 | 中国科学院过程工程研究所 | W-type flame decoupling combustion furnace and decoupling combustion method |
| CN202166050U (en) * | 2011-07-08 | 2012-03-14 | 贵州电力试验研究院 | Pulverized-coal-combustion-stabilizing dual cyclone air cylinder combustor - W-type flame boiler |
-
2011
- 2011-07-08 CN CN201110190669A patent/CN102322631A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268403A (en) * | 1988-09-02 | 1990-03-07 | Babcock Hitachi Kk | Solid fuel burner |
| CN101158472A (en) * | 2007-11-21 | 2008-04-09 | 北京交通大学 | W flame boiler primary air waste-steam replacement method and apparatus for |
| CN102297421A (en) * | 2011-06-27 | 2011-12-28 | 中国科学院过程工程研究所 | W-type flame decoupling combustion furnace and decoupling combustion method |
| CN202166050U (en) * | 2011-07-08 | 2012-03-14 | 贵州电力试验研究院 | Pulverized-coal-combustion-stabilizing dual cyclone air cylinder combustor - W-type flame boiler |
Non-Patent Citations (3)
| Title |
|---|
| 汪华剑: "W型火焰锅炉燃烧检测与优化研究", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》, no. 11, 15 November 2010 (2010-11-15), pages 5 - 20 * |
| 王春昌等: "锅炉结构参数对NOx 排放量的影响", 《热力发电》, no. 1, 28 February 2002 (2002-02-28) * |
| 车刚等: "改造W型火焰锅炉结构的实验研究", 《锅炉技术》, vol. 31, no. 5, 31 May 2000 (2000-05-31) * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102777893B (en) * | 2012-08-06 | 2014-12-10 | 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 |
| 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 |
| CN103672950B (en) * | 2013-10-17 | 2016-02-10 | 贵州电力试验研究院 | The firing optimization method of the W type flame furnace that the lower Secondary Air tilt angled down of arch is adjustable |
| CN106247322B (en) * | 2016-07-28 | 2018-04-24 | 哈尔滨工业大学 | The W flame boiler that a kind of lack of gas windage yaw is put |
| CN106247322A (en) * | 2016-07-28 | 2016-12-21 | 哈尔滨工业大学 | The W flame boiler that a kind of weary gas windage yaw is put |
| CN106287677A (en) * | 2016-08-09 | 2017-01-04 | 贵州电网有限责任公司电力科学研究院 | A kind of method of adjustment of W flame direct current cooker secondary wind |
| CN106287677B (en) * | 2016-08-09 | 2019-04-02 | 贵州电网有限责任公司电力科学研究院 | A kind of method of adjustment of W flame direct current cooker Secondary Air |
| CN108758615A (en) * | 2018-06-22 | 2018-11-06 | 东方电气集团东方锅炉股份有限公司 | Quadrangle tangential circle pulverized coal firing boiler and coal generating system |
| CN108758615B (en) * | 2018-06-22 | 2023-11-14 | 东方电气集团东方锅炉股份有限公司 | Four-corner tangential pulverized coal combustion boiler and coal-fired power generation system |
| CN109945167A (en) * | 2019-03-11 | 2019-06-28 | 哈尔滨工业大学 | A kind of front wall, the asymmetrical W flame boiler of rear wall Secondary Air |
| CN114165780A (en) * | 2021-11-01 | 2022-03-11 | 东方电气集团东方锅炉股份有限公司 | W flame boiler combustion device |
| CN114165780B (en) * | 2021-11-01 | 2023-08-22 | 东方电气集团东方锅炉股份有限公司 | W flame boiler combustion device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102322631A (en) | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal | |
| CN102563624B (en) | Combustion device for tangentially fired boiler and ultralow NOx combustion method employing same | |
| CN101832549B (en) | Multi-ejection grading combustion method | |
| CN101832548B (en) | Method for arch single-stage injection fractional combustion and W flame boiler for realizing method | |
| CN103216821B (en) | Multi-stage stratified combustion system and method for primary air and secondary air of boiler | |
| CN102913898B (en) | Over-fire air distribution manner in front and back wall opposed firing boiler | |
| CN102777894B (en) | Reverse powder injection combustor | |
| CN101986028B (en) | Low-NOx W-type flame boiler with dry bottom hopper and furnace bottom air supplies distributed in bielliptical shape | |
| CN104913299A (en) | W flame boiler burner and air distribution method thereof | |
| CN101818893B (en) | W-flame boiler with boundary-secondary wind jet | |
| CN202166050U (en) | Pulverized-coal-combustion-stabilizing dual cyclone air cylinder combustor - W-type flame boiler | |
| CN202082915U (en) | W-shape flame boiler with grading secondary air layout structure | |
| CN101358730B (en) | W type flame boiler with over-fired air device arranged at junction of upper and lower of hearth | |
| CN202350013U (en) | W-shaped flame boiler | |
| CN203273882U (en) | Pulverized coal burner | |
| CN101865456B (en) | Slit-type burner W type flame boiler with high burning performance and preparation method thereof | |
| CN201875694U (en) | Low-NOx (nitrogen oxide) W-shaped flame boiler with bottom ash hopper and furnace bottom blowing-in bielliptical arrangement | |
| CN204420987U (en) | The burner of W flame boiler and W flame boiler | |
| CN206861508U (en) | A kind of boiler and its side water wall high temperature corrosion resistance coking device | |
| CN201803362U (en) | W-shaped flame boiler for split burner with high combustion property | |
| CN206112906U (en) | Novel deep or light W flame burning device | |
| CN102116491B (en) | Combustion chamber | |
| CN201903077U (en) | Combustion chamber | |
| CN203131804U (en) | Pulverized coal boiler utilizing tangential firing | |
| CN111121006B (en) | Horizontal pulverized coal boiler and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120118 |