CN2203437Y - Double air duct coal jet tube for rotary cement kiln - Google Patents
Double air duct coal jet tube for rotary cement kiln Download PDFInfo
- Publication number
- CN2203437Y CN2203437Y CN 94221320 CN94221320U CN2203437Y CN 2203437 Y CN2203437 Y CN 2203437Y CN 94221320 CN94221320 CN 94221320 CN 94221320 U CN94221320 U CN 94221320U CN 2203437 Y CN2203437 Y CN 2203437Y
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- coal
- air duct
- utility
- model
- rotary cement
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- Expired - Fee Related
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Abstract
The utility model discloses the structural design of a novel double air duct coal jet tube for rotary cement kilns. The utility model is characterized in that the double air duct coal jet tube is formed by that an inner casing tube provided with a ventilated fin and an outer casing tube provided with an outer layer ring-shaped track are combined. The utility model can control the different jet speeds of air coal, improve the combustion velocity and imperfect combustion degree of coal powder, improve thermotechnical arrangement in the rotary cement kiln, increase the output capacity of the rotary cement kiln and reduce the heat consumption. The utility model has the advantage of simple structural design and can utilize part of apparatuses of the original single air duct coal jet system.
Description
The utility model relates to the structural design scope of cement rotary kiln coal powder injection pipe.
At present, most of cement rotary kilns adopt in single air channel coal powder injection pipe (see figure 1), the usefulness and press centrifugal fan to blow the method that coal dust is gone into kiln.As everyone knows, with single air channel coal powder injection pipe, when the speed of wind coal inrush during greater than 70m/s, the coal dust range is far away excessively, can cause imperfect combustion, cross when low, mix bad with secondary wind as wind coal inrush speed, mix bad, burning velocity is slow, burning zone temperature is low, and the production capacity of kiln is reduced, when the coal dust that adds more for a long time, also can produce imperfect combustion, safety such as exhaust blower, cottrell are constituted a threat to.The major defect of this cement rotary kiln list air channel coal powder injection pipe is that the speed of control wind coal inrush is bad.Some Dayaos adopt three air channel coal powder injection pipes more both at home and abroad, and its shortcoming mainly is a complex structure, and jet burning system equipment is many again, and cost is quite expensive.
The purpose of this utility model is exactly to design a kind of simple in structure, the two air channel coal powder injection pipes that can control wind coal spray speed.
Realize that specific design method of the present utility model is:
1, on the basis of single air channel coal injection pipe structure, in the coal powder injection pipe, adds an inner sleeve (6), in order to spray feed wind coal;
2, the anterior windward wing (4) of installing in inner sleeve, in order to cause spray feed wind coal eddy flow:
3, the outflow wind inlet (2) at coal powder injection outer tube layer pipe (7) is provided with outer annular road (5);
4, with a roots blower constant volume air feed to the coal powder injection pipe.
Say simply, a kind of coal powder injection pipe of cement rotary kiln, it is by an inner sleeve that the wind wing is installed and is provided with two air channel coal powder injection pipes that the outer tube in outer annular road combines, and adopts a roots blower constant volume air feed.
The advantage of the two air channel coal powder injection pipes of cement rotary kiln of the utility model design is:
1, structural design is simple, can utilize the equipment component of former single duct coal injection system;
2, can control the difference spray speed of wind coal, improve the burning velocity and the completeness of coal dust, improve thermal technology's layout in the kiln, increase the calorific capacity and the production capacity of kiln, reduce hear rate;
3, can reduce a wind (cold wind) consumption, increase the ratio of secondary hot-air, help the recovery of heat and the work of cooler.
4, increase the jet power of a wind, secondary wind is had swabbing action, can eliminate some kiln hood phenomenon of falling the cigarette, improve and see fiery operating environment.
Description of drawings:
The old type list of Fig. 1-cement rotary kiln air channel coal injection pipe structure;
Novel pair of air channel coal injection pipe structure of Fig. 2-cement rotary kiln.
Among the figure: wind-coal powder entrance of 1-; 2-outflow wind inlet; Stream wind and coal powder entrance in the 3-; 4-wind wing; 5-outer annular road; The 6-inner sleeve; The 7-outer tube.
Claims (1)
1, a kind of coal powder injection pipe of cement rotary kiln is characterized in that it is by an inner sleeve that the wind wing is installed and is provided with two air channel coal powder injection pipes that the outer tube in outer annular road combines.And adopt a roots blower constant volume air feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221320 CN2203437Y (en) | 1994-09-14 | 1994-09-14 | Double air duct coal jet tube for rotary cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221320 CN2203437Y (en) | 1994-09-14 | 1994-09-14 | Double air duct coal jet tube for rotary cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2203437Y true CN2203437Y (en) | 1995-07-12 |
Family
ID=33835651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94221320 Expired - Fee Related CN2203437Y (en) | 1994-09-14 | 1994-09-14 | Double air duct coal jet tube for rotary cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2203437Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712227A (en) * | 2013-12-13 | 2014-04-09 | 山西蓝天环保设备有限公司 | High-concentration pulverized coal mixing injection device and method for increasing combustion efficiency |
| CN109612893A (en) * | 2018-12-29 | 2019-04-12 | 安徽春暖花开环境科技有限公司 | A kind of automobile-used laser fine particle detection device |
-
1994
- 1994-09-14 CN CN 94221320 patent/CN2203437Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712227A (en) * | 2013-12-13 | 2014-04-09 | 山西蓝天环保设备有限公司 | High-concentration pulverized coal mixing injection device and method for increasing combustion efficiency |
| CN103712227B (en) * | 2013-12-13 | 2016-08-17 | 山西蓝天环保设备有限公司 | High concentration pulverized coal mixing injection device and the method improving efficiency of combustion |
| CN109612893A (en) * | 2018-12-29 | 2019-04-12 | 安徽春暖花开环境科技有限公司 | A kind of automobile-used laser fine particle detection device |
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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 |