CN2636088Y - Four-passway coal divided burner - Google Patents
Four-passway coal divided burner Download PDFInfo
- Publication number
- CN2636088Y CN2636088Y CN 03259878 CN03259878U CN2636088Y CN 2636088 Y CN2636088 Y CN 2636088Y CN 03259878 CN03259878 CN 03259878 CN 03259878 U CN03259878 U CN 03259878U CN 2636088 Y CN2636088 Y CN 2636088Y
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- coal
- air channel
- sleeve
- passage
- circulation road
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Abstract
The utility model provides a four-passage coal shunting combustor, which comprises an external axis air passage, an internal rotation air passage, a central air passage, a coal passage, an oil gun pipeline, as well as a coal shunting device. The coal shunting device is arranged at the outlet of the coal passage and is composed of an external helical slice, an internal helical slice and a sleeve; wherein, the external helical slice is arranged on the outer side of the sleeve and is connected with the inner side of the outer pipe of the coal passage; the internal helical slice is arranged on the inner side of the sleeve and is connected with the outer side of the inner pipe of the coal passage; the external helical slice is of the same helical angle and the reverse direction with the internal helical slice. When in use, the combustor fully mixes the coal powder flow with high temperature secondary air to realize the full combustion of the coal powder.
Description
Technical field
The utility model relates to a kind of coal powder burner, especially for the four-way coal shunting combustion device in the cement production process.
Background technology
At present, in cement production process, the rotary kiln end burner generally adopts the coal powder injection burner, and this burner is made of air channel, center, inner eddy flow passage, middle coal circulation road, outside axial flow passage, oil gun pipeline.During work, at first by oil gun pipeline oil jetting combustion, when indoor temperature can make coal powder ignition, open deliver coal blower fan and coal feeding system by the coal powder injection in kiln of coal circulation road, stream wind in opening earlier, and progressively strengthen, flow wind over again during intensification, strengthen along with feeding the coal amount, interior outflow wind strengthens gradually, makes it to reach smooth combustion.Because the coal stream of coal circulation road ejection fails fully to spread, and causes the intermediate layer anoxic, and coal dust can not all be burnt, and causes waste, production cost improves.
Summary of the invention
The coal stream that sprays for the coal circulation road that overcomes existing coal powder injection burner can not fully spread the deficiency that causes the intermediate layer anoxic, coal dust can not all be burnt.The purpose of this utility model is to provide a kind of four-way coal shunting combustion device, and this burner makes pulverized coal flow fully mix with high temperature secondary wind in combustion process, reaches coal dust and all burns.
The technical scheme that its technical problem that solves the utility model adopts is: comprise outer axial flow air channel, interior eddy flow air channel, air channel, center, coal circulation road, oil gun pipeline, also contain the coal part flow arrangement, the coal part flow arrangement is arranged on coal circulation road exit, the coal part flow arrangement is made up of external spiral sheet, inner screwy fin and sleeve, the external spiral sheet be arranged on the outside of sleeve and link with coal circulation road outer tube inboard, inner screwy fin is arranged on sleeve inboard and with the coal circulation road in the pipe outside link, the external spiral sheet equates that with the spiral angle of inner screwy fin direction is opposite.
The spiral angle of external spiral sheet and inner screwy fin is 10 °-12 °.
The spiral angle of interior eddy flow air channel flight is 20 °-40 °.
The beneficial effects of the utility model are to adopt the coal part flow arrangement, pulverized coal flow formation rotation and opposite outflow coal wind and the interior stream coal wind of direction, coal dust fully spreads mixing, be easy to engaging-in high temperature secondary wind, form the intermediate reflux district, coal powder ignition easily, quick heating, coal dust completing combustion.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation front view of the present utility model.
Fig. 2 is a structural representation vertical view of the present utility model.
Fig. 3 is that B of the present utility model is to figure.
Fig. 4 is the cutaway view of the utility model along the C-C direction.
1. oil gun pipelines among the figure, 2. interior eddy flow air channel flight, 3. sleeve, 4. inner screwy fin, 5. external spiral sheet, 6. fire-resistant body, 7. outer axial flow air channel, 8. coal circulation road, 9. interior eddy flow air channel, 10. air channel, center, 11. outer axial flow air channel control valves, 12. interior eddy flow air channel control valve, air channel, 13. center control valve.
The specific embodiment
Among Fig. 2, outer axial flow air channel 7 is provided with outer axial flow air channel control valve 11, eddy flow air channel control valve 12 in interior eddy flow air channel 9 is provided with, and air channel, center 10 is provided with air channel, center control valve 13.
Among Fig. 3 and Fig. 4, the outer tube in outer axial flow air channel 7 outside is provided with fire-resistant body 6, and the interior pipe inboard in outer axial flow air channel 7 is provided with coal circulation road 8.For the coal stream that overcomes 8 ejections of coal circulation road can not fully spread, the deficiency that causes the intermediate layer anoxic, coal dust can not all be burnt, be provided with the coal part flow arrangement in the exit of coal circulation road 8, the coal part flow arrangement is made up of external spiral sheet 5, inner screwy fin 4 and sleeve 3, external spiral sheet 5 be arranged on the outside of sleeve 3 and link with coal circulation road 8 outer tube inboards, inner screwy fin 4 is arranged on sleeve 3 inboard and with coal circulation road 8 in the pipe outside link, external spiral sheet 5 equates that with the spiral angle of inner screwy fin 4 direction is opposite.Generally get 10 °-12 ° in order to make coal stream fully spread the spiral angle that reaches better effects external spiral sheet 5 and inner screwy fin 4.The interior pipe inboard of coal circulation road 8 is provided with interior eddy flow air channel 9, and eddy flow air channel flight 2 in 9 exits, interior eddy flow air channel are provided with reaches effect preferably for coal stream is fully mixed, and the spiral angle of interior eddy flow air channel flight 2 is generally got 20 °-40 °.The interior pipe inboard in interior eddy flow air channel 9 is provided with air channel, center 10, and the pipe inboard is provided with oil gun pipeline 1 in the air channel, center 10.
Because existing coal powder injection burner is formed high temperature exteenal reflux district when burning, the pulverized coal flow of coal circulation road 8 ejections outside the interior recirculating zone, in the exit is split into by the sleeve 3 of coal part flow arrangement, outer two strands of coals stream, in these two strands, outer coal flow point is not under the effect of the inner screwy fin 4 of coal part flow arrangement and external spiral sheet 5, form two strands of opposite coal stream wind of direction of rotation, coal dust fully spreads mixing, help engaging-in high temperature secondary wind, form stable intermediate reflux district, coal, wind mixes and strongly, significantly reduce pulverized coal flow center anoxic conditions, coal powder ignition is easy, quick heating, coal dust burnout rate height, energy-saving effect is remarkable.
Claims (3)
1. four-way coal shunting combustion device, comprise outer axial flow air channel, interior eddy flow air channel, the air channel, center, the coal circulation road, the oil gun pipeline, it is characterized in that: also contain the coal part flow arrangement, described coal part flow arrangement is arranged on described coal circulation road exit, described coal part flow arrangement is by the external spiral sheet, inner screwy fin and sleeve are formed, described external spiral sheet is arranged on the outside of described sleeve and links with described coal circulation road outer tube inboard, described inner screwy fin be arranged on the inboard of described sleeve and with described coal circulation road in the pipe outside link, described external spiral sheet equates that with the spiral angle of described inner screwy fin direction is opposite.
2. four-way coal shunting combustion device according to claim 1 is characterized in that: the spiral angle of described external spiral sheet and described inner screwy fin is 10 °-12 °.
3. four-way coal shunting combustion device according to claim 1 is characterized in that: the spiral angle of eddy flow air channel flight is 20 °-40 ° in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259878 CN2636088Y (en) | 2003-07-29 | 2003-07-29 | Four-passway coal divided burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259878 CN2636088Y (en) | 2003-07-29 | 2003-07-29 | Four-passway coal divided burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2636088Y true CN2636088Y (en) | 2004-08-25 |
Family
ID=34296239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03259878 Expired - Fee Related CN2636088Y (en) | 2003-07-29 | 2003-07-29 | Four-passway coal divided burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2636088Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075729A (en) * | 2012-12-10 | 2013-05-01 | 傅宁芳 | Cement rotary kiln coal powder burner with oxygen-enriched micro-oil ignition device |
| CN105066130A (en) * | 2015-08-21 | 2015-11-18 | 哈尔滨工业大学 | Spiral cyclone and combustion device comprising same |
| CN109797008A (en) * | 2017-11-17 | 2019-05-24 | 神华集团有限责任公司 | Nozzle and gasification furnace with the nozzle |
-
2003
- 2003-07-29 CN CN 03259878 patent/CN2636088Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075729A (en) * | 2012-12-10 | 2013-05-01 | 傅宁芳 | Cement rotary kiln coal powder burner with oxygen-enriched micro-oil ignition device |
| CN103075729B (en) * | 2012-12-10 | 2015-06-17 | 杭州玺清环保科技有限公司 | Cement rotary kiln coal powder burner with oxygen-enriched micro-oil ignition device |
| CN105066130A (en) * | 2015-08-21 | 2015-11-18 | 哈尔滨工业大学 | Spiral cyclone and combustion device comprising same |
| CN105066130B (en) * | 2015-08-21 | 2018-09-07 | 哈尔滨工业大学 | A kind of helical swirler and utilize burner made of the helical swirler |
| CN109797008A (en) * | 2017-11-17 | 2019-05-24 | 神华集团有限责任公司 | Nozzle and gasification furnace with the nozzle |
| CN109797008B (en) * | 2017-11-17 | 2020-10-27 | 神华集团有限责任公司 | Nozzle and gasification furnace with same |
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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 |