CN201697124U - Powdered coal burner for kiln head - Google Patents
Powdered coal burner for kiln head Download PDFInfo
- Publication number
- CN201697124U CN201697124U CN2010202302709U CN201020230270U CN201697124U CN 201697124 U CN201697124 U CN 201697124U CN 2010202302709 U CN2010202302709 U CN 2010202302709U CN 201020230270 U CN201020230270 U CN 201020230270U CN 201697124 U CN201697124 U CN 201697124U
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- CN
- China
- Prior art keywords
- pipe
- eddy current
- current wind
- air channel
- powdered coal
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a powdered coal burner for a kiln head, which solves the problems of easy deformation and short service life of the burner in the prior art. The powdered coal burner is characterized in that a front ring flange is fixed on a hollow ceramic bowl through 15-20 high temperature resistant bolts; a special ceramic pipe (a), a special ceramic tube (b), a special ceramic tube (c) and a special ceramic tube (d) are lined inside an outer air duct, outside a swirled air outer pipe, inside a swirled air inner pipe and outside a coal delivery pipe respectively; and 16-24 outer air duct nozzles are uniformly distributed around the outer air duct. The powdered coal burner provided by the utility model has low liability of bending and deformation, good burning resistance and small burning loss, and is applied to a plurality of coat types. The powdered coal burner allows high-temperature air (400 DEG C to 450 DEG C) to pass through, and can deliver powdered coal with hot air, so as to save energy.
Description
Affiliated technical field
The utility model cement rotary kiln burner relates to the four-way coal burner that a kind of cement rotary kiln is used or rather.
Background technology
Kiln hood has experienced four generation such as the first generation (single air channel), the second generation (two air channels and three air channels), the third generation (four air channels), the 4th generation (can remove four air channels of part NOx) product with burner., all there are certain progress and the feature of oneself in each generation, but because of its working environment very abominable, so far domestic and international four generation burner also have fatal weakness: one be to use the time not length will bend and moderate finite deformation, make flame profile be difficult to satisfy the requirement of grog burning; Two are to use the life-span short, generally all promptly need renewal or overhaul in two years, otherwise can have a strong impact on the output and the quality of grog; The 3rd, produce a large amount of NOx in the combustion process in the kiln in the waste gas and expel from kiln, environment is caused severe contamination; The 4th, relatively poor to the adaptability of coal, incompatibility anthracite, difficult burning smoke coal coals such as (V＜20%, A＞30%) especially.
Summary of the invention
The utility model according to the deficiencies in the prior art provide a kind of adapt to many coals the 5th generation the kiln hood coal burner, resistance to elevated temperatures is good, long service life.
The technical solution of the utility model is: the forward flange dish, the rear stub that comprise burner, pipe, coal chute, central air hose, petroleum pipeline in airduct, eddy current wind outer tube, the eddy current wind outside the coaxial arrangement between forward flange dish, rear stub, form outer air channel between outer airduct and the eddy current wind outer tube, form the eddy current air channel in eddy current wind outer tube and the eddy current wind between the pipe, form the coal powder injection air channel in the eddy current wind between pipe and the coal chute, form the air channel, center in the central air hose; It is characterized in that: the forward flange dish is by 15-20 high temperature resistant being bolted on the hollow ceramic bowl; Airduct is interior outside, eddy current wind outer tube is outer, the interior pipe of eddy current wind is interior, coal chute is lined with special cermacis pipe a, special cermacis pipe b, special cermacis pipe c, special cermacis pipe d outward; Outer air channel one circle is evenly equipped with 16-24 outer air channel nozzle.
Described exogenous wind tubing matter is No. 1 heat resisting steel, and pipe, coal chute, central air hose, petroleum pipeline are No. 2 heat resisting steel in described eddy current wind outer tube, the eddy current wind.
Described special cermacis pipe a, b, c, d make by high temperature resistant, ablation resistant material, are in series by the standard special cermacis pipe of 2-3 length 500-600mm.
Described hollow ceramic bowl height 120-160mm, it is strong, closely knit, stable that its bowl-shape effect can make flame concentrate, and can protect the metal parts of burner head.
Described outer air channel nozzle, quantity are 16-24, band convex edge, bottom.
As shown from the above technical solution, the utility model: the one, but in 1500 ℃ of environment long-term work and not flexible and the distortion; Anti-burning is good, and the scaling loss amount is little, and can reach more than 3 years service life, and update cost is low, and total service life can reach about 10 years.The 2nd, adapt to many coals uses, particularly anthracite, difficult burning smoke coal, coke blacking and colm, burnout rate is higher than the 4th generation burner 0.2-0.5 percentage point, and promptly burnout rate reaches 99.99-100%, has guaranteed clinker quality and output effectively; With the 4th generation burner compare, can further reduce the discharge capacity of NOx, can reduce discharging 5-10%.The 3rd, allow high temperature air (400-450 ℃) to pass through, thereby available hot blast pulverized coal conveying.When ature of coal was bituminous coal, available 300-350 ℃ of hot blast carried; When ature of coal was anthracite and difficult fire coal, available 350-450 ℃ hot blast was carried.Since hot blast can preheating coal dust, it is rapid to go into the kiln pulverized coal ignition, burnout rate height, and reduced the caloric receptivity of cold air in kiln hood promptly accounts for kiln and is replaced by high temperature air with the cold air of the 6-15% of air quantity, thereby realized purpose of energy saving.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1. rear stub, 2. outer airduct, 3. eddy current wind outer tube is 4. managed in the eddy current wind, 5. coal chute, 6. central air hose, 7. petroleum pipeline, 8. special cermacis pipe a, 9. special cermacis pipe b, 10. special cermacis pipe c, 11. special cermacis pipe d, 12. the spiral wind wing, 13. high temperature resistant bolts, 14. forward flange dishes, 15. the hollow ceramic bowl, 16. outer air channel nozzles, 17. center wind wind-distributing pipes.
The specific embodiment
As shown in drawings, the utility model comprises forward flange dish 14, rear stub 1, between forward flange dish 14, rear stub 1, manage 4 outside the coaxial arrangement in airduct 2, eddy current wind outer tube 3, the eddy current wind, coal chute 5, central air hose 6, petroleum pipeline 7, form outer air channel between outer airduct 2 and the eddy current wind outer tube 3, form the eddy current air channel in eddy current wind outer tube 3 and the eddy current wind between the pipe 4, form the coal powder injection air channel in the eddy current wind between pipe 4 and the coal chute 5, form the air channel, center in the central air hose 6.
Outside in the airduct 2, in 3 outer, the eddy current wind of eddy current wind outer tube in the pipe 4, coal chute 5 is outer is fixed with special cermacis pipe a8, special cermacis pipe b9, special cermacis pipe c10, special cermacis pipe d11 by dog screw, locating ring.Outer air channel one circle is evenly equipped with 16-24 outer air channel nozzle 16, can be in high temperature, the medium-term and long-term work of high wind speed environment.
Front end is provided with spiral wind wing 12 in the eddy current air channel, and can fully mix with surrounding air provides power.Be provided with center wind wind-distributing pipe 17 in the air channel, center, can uniform center wind, and prevent that central air hose 6 front end centers from forming negative pressure.
Claims (2)
1. kiln hood coal burner, the forward flange dish, the rear stub that comprise burner, pipe, coal chute, central air hose, petroleum pipeline in airduct, eddy current wind outer tube, the eddy current wind outside the coaxial arrangement between forward flange dish, rear stub, form outer air channel between outer airduct and the eddy current wind outer tube, form the eddy current air channel in eddy current wind outer tube and the eddy current wind between the pipe, form the coal powder injection air channel in the eddy current wind between pipe and the coal chute, form the air channel, center in the central air hose; It is characterized in that: forward flange dish (14) is fixed on the hollow ceramic bowl (15) by 15-20 high temperature resistant bolt (13); Outer special cermacis pipe a (8), special cermacis pipe b (9), special cermacis pipe c (10), the special cermacis pipe d (11) of being lined with of coal chute (5) outside in the airduct (2), in outer, the eddy current wind of eddy current wind outer tube (3) in the pipe (4); Outer air channel one circle is evenly equipped with 16-24 outer air channel nozzle (16).
2. kiln hood coal burner as claimed in claim 1 is characterized in that: described hollow ceramic bowl (15) height 120-160mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202302709U CN201697124U (en) | 2010-06-06 | 2010-06-06 | Powdered coal burner for kiln head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202302709U CN201697124U (en) | 2010-06-06 | 2010-06-06 | Powdered coal burner for kiln head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697124U true CN201697124U (en) | 2011-01-05 |
Family
ID=43398370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202302709U Expired - Fee Related CN201697124U (en) | 2010-06-06 | 2010-06-06 | Powdered coal burner for kiln head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486581A (en) * | 2013-06-28 | 2014-01-01 | 广东电网公司电力科学研究院 | Burning loss prevention method and device for turbulent burner |
-
2010
- 2010-06-06 CN CN2010202302709U patent/CN201697124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486581A (en) * | 2013-06-28 | 2014-01-01 | 广东电网公司电力科学研究院 | Burning loss prevention method and device for turbulent burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20110606 |