CN201462824U - Multi-rotational flow multi-air channel pulverized coal burner - Google Patents
Multi-rotational flow multi-air channel pulverized coal burner Download PDFInfo
- Publication number
- CN201462824U CN201462824U CN2009200914638U CN200920091463U CN201462824U CN 201462824 U CN201462824 U CN 201462824U CN 2009200914638 U CN2009200914638 U CN 2009200914638U CN 200920091463 U CN200920091463 U CN 200920091463U CN 201462824 U CN201462824 U CN 201462824U
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- air channel
- wind
- coal
- eddy flow
- rotational flow
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Abstract
The utility model discloses a multi-rotational flow multi-air channel pulverized coal burner which comprises an outer straight flow air channel, a coal air channel, a center air channel, a flame collecting cover and a rotational flow air channel, wherein the rotational flow air channel comprises an outer rotational flow air channel and an inner rotational flow air channel; the inner rotational flow air channel and the outer rotational flow air channel are respectively arranged at the inner side and the outer side of the coal air channel; and replaceable cyclones are respectively arranged in the inner rotational flow air channel and the outer rotational flow air channel. The utility model enhances the adaptability of the burner to various kinds of coal fuels, improves the burning efficiency of the pulverized coal burner under different burning conditions, and is suitable for the calcining process of industrial stoves.
Description
Technical field
The utility model relates to the coal burner that uses in a kind of Industrial Stoves calcination process, particularly a kind of many eddy flows multiple duct coal burner.
Background technology
Coal burner is one of key equipment of many Industrial Stoves (as cement rotary kiln, aluminium oxide rotary kiln etc.) calcinings, the quality of burner performance for the output, the quality that improve clinker burning, keep that thermal regulation in the kiln is stable, the running rate that improves rotary kiln, improve the rotary kiln fuel scope of application, reduce aspects such as environmental pollution and have important effect and directly influence.Adopt burner structure to pass through the evolution in single air channel, two air channel, three air channels and four air channels at present in the traditional mode of production.Three air channels and burner ubiquity efficiency of combustion before are on the low side, the shortcoming that firepower is not concentrated, even four in-duct burners also exist coal adaptability poor, and the weakness of flame profile and intensity of fire controllability difference.
The utility model content
In view of this, the purpose of this utility model is in order a kind of many eddy flows multiple duct coal burner to be provided, to strengthen the adaptability of burner to each coal fuel, improving the efficiency of combustion of coal burner under different burning conditions.
For achieving the above object, the utility model by the following technical solutions:
This many eddy flows multiple duct coal burner comprises outer direct current air channel, coal wind air channel, air channel, center and holds together the flame cover, and this many eddy flows multiple wind duct combusting device also includes the eddy flow air channel, and described eddy flow air channel comprises outer swirling wind channel and interior eddy flow air channel; Interior eddy flow air channel and outer swirling wind channel are separately positioned on the inside and outside both sides in coal wind air channel, are equipped with removable cyclone in interior eddy flow air channel and the outer swirling wind channel.
Further, the circumscribed aweather pipeline of coal wind is installed in the outer swirling wind channel.
Further, the eddy flow angular range of described cyclone is 20～45 °.
Further, be respectively equipped with volume damper on the ajutage of interior eddy flow air channel, outer swirling wind channel and the circumscribed aweather pipeline of coal wind.
The beneficial effects of the utility model are:
The coal wind of coal burner is used for pulverized coal conveying, coal burner of the present utility model is circumscribed to the isostructural setting of airduct at interior eddy flow air channel, outer swirling wind channel and coal wind, realize the air-out of coal wind eddy flow, and under tangential wind effect, coal dust is mixed with air, improve combustion characteristics, improve efficiency of combustion, help the adaptation of burner different coals.Be equipped with the volume damper door on inside and outside eddy flow wind of the present utility model and the circumscribed pipeline of coal wind, implement to regulate by the ratio that valve can internal, outer eddy flow wind, with the coupling of exogenous wind wind speed in realizing; The size that volume damper door on the circumscribed aweather pipeline of coal wind can be regulated tangential wind, thus the adjusting of realization coal wind eddy flow dynamics adapts to different burning conditions.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the cross-sectional view (part sectioned view that also has the circumscribed aweather pipeline of coal wind place among Fig. 2) of Fig. 1;
Fig. 3 is a pipeline connection diagram of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, the structure of present embodiment burner is: each air channel is outer direct current air channel 1, outer swirling wind channel 2, coal wind air channel 3, interior eddy flow air channel 4, air channel, center 5 successively from outside to inside.Respectively there is an eddy flow air channel 3 inside and outside both sides, coal wind air channel, i.e. outer swirling wind channel 2 and interior eddy flow air channel 4.Hot junction in interior outer swirling wind channel is separately installed with removable cyclone 8 and cyclone 6, but and the difference of based on fuel ignition quality design replacing.The outer swirling wind channel exit is that uniform several are interrupted the hole on the circular passage, and primary air sprays from being interrupted in the hole.Inside and outside eddy flow wind air quantity can be regulated respectively by the valve on the outer swirling wind channel in being installed in.The circumscribed aweather pipeline 7 of coal wind is installed in outer swirling wind channel, thereby because tangential effect causes coal wind to change into eddy flow by direct current, and coal dust is fully mixed with air.Air channel, center 5 is positioned at the inboard in eddy flow air channel, plays the center oxygenating and prevents the effect that the secondary thermal flue gas back flows.For burner can normally be used, build fire-resistant pouring material 9 in the outside of burner under hot conditions.
Fig. 3 is the pipeline connection diagram of burner.Among the figure, primary air fan 14 has four pipelines to be connected with air channel, center 5 with outer direct current air channel 1, outer swirling wind channel 2, interior eddy flow air channel 4 respectively.And corresponding outer direct current air channel 1, outer swirling wind channel 2, interior eddy flow air channel 4 and air channel, center 5 are separately installed with valve 10,11,12 and 13, can realize of the adjustment of each air channel of burner by control valve, obtain the flame profile and the intensity of fire that need with the wind ratio.Burner adopts the high wind speed design, can effectively entrainment secondary wind, reduces one time the wind consumption, and simultaneously, the use of external oxygen has reduced the consumption of a wind more effectively, and plays good combustion-supporting effect, thereby can reduce NO effectively
XDischarge capacity.
Specifically, many eddy flows of present embodiment multiple duct coal burner has following advantage:
1. outer direct current elegance high speed winds, its effect is effectively to draw flame in, prevents that outer eddy flow and inward turning from flowing through the branch diffusion and causing flame excessive, damage kliner coating or equipment in the technology calcining.Simultaneously, outer direct current wind at a high speed can effectively entrainment the secondary high-temperature flue gas, keeps the length and the rigidity of flame.
2. the swirl vane of outer eddy flow wind adopts less angle, can make zone, outer eddy flow wind jet-core region velocity attenuation less, effectively delays coal wind and mixes with air is too fast, reduces root temperature, avoids too early the dispersing of flame.
3. interior eddy flow wind places coal wind inboard, and employing is than the swirl vane of wide-angle, increase along with the swirl vane angle, the tangential velocity of interior eddy flow wind increases, the outside diffusion velocity of wind jet increases in making, velocity axis is accelerated to decay, the jet-core region VELOCITY DISTRIBUTION gradually becomes unimodal, far away more from burner outlet, corresponding effluxvelocity peak atenuation is fast more, and promptly corresponding jet length scope shortens, but the jet mixing intensity is bigger, this helps improving the wind coal and mixes, and produces the tangent plane momentum, and is very effective to the control flame profile.
Claims (4)
1. the coal burner of eddy flow multiple duct more than a kind, comprise outer direct current air channel, coal wind air channel, air channel, center and hold together the flame cover, it is characterized in that: this many eddy flows multiple wind duct combusting device also includes the eddy flow air channel, and described eddy flow air channel comprises outer swirling wind channel and interior eddy flow air channel; Interior eddy flow air channel and outer swirling wind channel are separately positioned on the inside and outside both sides in coal wind air channel, are equipped with removable cyclone in interior eddy flow air channel and the outer swirling wind channel.
2. many eddy flows multiple duct coal burner according to claim 1 is characterized in that: the circumscribed aweather pipeline of coal wind is installed in the outer swirling wind channel.
3. many eddy flows multiple duct coal burner according to claim 2 is characterized in that: the eddy flow angular range of described cyclone is 20～45 °.
4. many eddy flows multiple duct coal burner according to claim 3 is characterized in that: be respectively equipped with volume damper on the ajutage of interior eddy flow air channel, outer swirling wind channel and the circumscribed aweather pipeline of coal wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200914638U CN201462824U (en) | 2009-07-14 | 2009-07-14 | Multi-rotational flow multi-air channel pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200914638U CN201462824U (en) | 2009-07-14 | 2009-07-14 | Multi-rotational flow multi-air channel pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201462824U true CN201462824U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200914638U Expired - Fee Related CN201462824U (en) | 2009-07-14 | 2009-07-14 | Multi-rotational flow multi-air channel pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201462824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033895A (en) * | 2014-06-28 | 2014-09-10 | 广西聚为能源科技有限公司 | Oxygen-enriched pulverized coal combustor |
| CN108730970A (en) * | 2017-04-15 | 2018-11-02 | 南京建安机械制造有限公司 | Five-channel coal-powder combustor |
-
2009
- 2009-07-14 CN CN2009200914638U patent/CN201462824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033895A (en) * | 2014-06-28 | 2014-09-10 | 广西聚为能源科技有限公司 | Oxygen-enriched pulverized coal combustor |
| CN108730970A (en) * | 2017-04-15 | 2018-11-02 | 南京建安机械制造有限公司 | Five-channel coal-powder combustor |
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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: 20100512 Termination date: 20120714 |