CN201983261U - Four-passage pulverized coal burner with simulated flame gathering cover - Google Patents
Four-passage pulverized coal burner with simulated flame gathering cover Download PDFInfo
- Publication number
- CN201983261U CN201983261U CN2011200683999U CN201120068399U CN201983261U CN 201983261 U CN201983261 U CN 201983261U CN 2011200683999 U CN2011200683999 U CN 2011200683999U CN 201120068399 U CN201120068399 U CN 201120068399U CN 201983261 U CN201983261 U CN 201983261U
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- burner
- coal
- air channel
- flame
- flame cover
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Abstract
The utility model discloses a four-passage pulverized coal burner with a simulated flame gathering cover, which comprises a purified gas pipe, a coal air pipe, a center pipe and a jet nozzle end which are connected by sleeve pipes, wherein the jet nozzle end comprises an outer air passage, a coal air passage, an inner air passage and a center air passage which are sequentially and coaxially arranged from the outside to the inside, the head part of the outer air passage is provided with a simulated flame gathering cover for gathering jet flame at the initial stage, and the simulated flame gathering cover comprises a plurality of jet passages arranged on the outer air passage at the end part of the burner, and a flame gathering sleeve, through which gas flows at a certain angle slantways in the direction of the center line of the burner after fluid is jetted out of the burner, is arranged in the jet passages. The four-passage pulverized coal burner with the simulated flame gathering cover mainly has the advantages that the length of the flame gathering cover is as small as 10 to 15mm, the surfacing damage area is very small, and the service life of the simulated flame gathering cover can reach more than 2 to 3 years. The ventilation area of the quantity of outer air is directly regulated, the adaptability to the coal variety is increased, the pressure energy of the fluid is saved, the quantity of cold air entering a kiln is reduced, and the coal consumption is saved.
Description
Technical field
The utility model relates to a kind of coal burner, is specifically related to a kind of emulation and holds together flame cover four-way coal burner.
Background technology
Coal burner is divided into triple channel burner and four-way burner according to the quantity of the circular passage that sleeve pipe constitutes, the triple channel coal burner is from being respectively outer air channel, coal air channel and interior air channel outside to inside, and the four-way coal burner is from being called outer air channel, coal air channel, interior air channel and air channel, center outside to inside.The head of existing coal burner is provided with the flame cover mostly, and it is 50 ~ 100mm that its length is about, generally speaking, using just appearance ablation in 2 ~ 3 months, wearing and tearing, need built-up welding could continue to use, the area of built-up welding is also bigger, will change in 1 year and hold together flame cover main body.In the adjusting of ventilation, the normal valve regulated that is arranged on the air pipeline that adopts causes certain fluid energy loss.In addition, the applicability to coal is not strong.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model provides a kind of emulation and holds together flame cover four-way coal burner, to realize effectively prolonging flame cover service life, reduces the cold blast rate of going into kiln, saves coal consumption.
In order to realize the foregoing invention purpose, the technical solution adopted in the utility model is: a kind of four-way coal burner, comprise the inlet end and the nozzle end that connect by pipeline, the air inlet section comprises fresh-air duct, coal airduct and central tube, nozzle segment comprises the ecto-entad outer air channel of coaxial setting successively, the coal air channel, interior air channel and air channel, center, the head in air channel is provided with the emulation that is used to draw in the initial stage jet flames and holds together the flame cover outside described, described emulation is held together the flame cover and is included in the some injection channels that are provided with on the exogenous wind passage of burner end, is provided with can make fluid spray the back air-flow from burner to hold together the flame cover to what the burner centerline direction tilt to spray at a certain angle in injection channel.
The evenly distributed little rectangular channel (circular cylindrical) of outermost layer annular that flame cover four-way coal burner is held together in emulation is called outer air channel, and the air-flow of this passage of process is the axial DC wind that oriented slightly burner centerline direction draws in, also is called axial flow wind or exogenous wind.Exogenous wind is the part of a wind, sprays by proper proportion with interior wind.The utility model also adopts emulation to hold together flame to be covered with the meter principle and can to hold together flame preferably, and it is strong that flame is concentrated, and flame profile is better.Draught area can change size by the adjusting device that is arranged on the burner afterbody outer tube, regulates outer air channel ventilation.
Interior air channel places the inboard in coal air channel, and its outlet is provided with the spiral blade cyclone, and interior air channel forms eddy flow wind by the eddy flow groove.The size of eddy flow wind is bigger to the flame profile influence of coal dust firing, the control intake, must be by air channel gate valve in regulating, or the axial location of adjusting cyclone, change swirl strength, control flame profile and combustion efficiency with this, reach best flame diameter and ideal length, make to calcine in the kiln and stablize.
The center wind that flame cover four-way burner is held together in emulation is by the many aperture ejections on the cyclone end that is contained in the centre pipe end, its effect is to replenish the center air in the recirculating zone of flame root, regulate the flue-gas temperature situation in the recirculating zone, regulate black duration and degree of heating length, making it has stronger adaptability to colm, anthracite.Bumer of light fuel is installed in the central tube, and its effect is igniting or mends fire.
Beneficial effect: flame cover four-way coal burner is held together in emulation of the present utility model, compare with existing triple channel coal burner or four-way coal burner, its advantage mainly comprises: 1, adopting has gathering initial stage jet flames function simulating to hold together the flame cover, good flame profile be can form, coal dust firing and material calcining in the rotary kiln helped.Thereby the flame cover length of holding together of this burner reduces significantly, the flame cover length of holding together of general burner is about 50 ~ 100mm, this burner only needs 10 ~ 15mm just to reach same effect, make increase substantially the service life of holding together the flame cover of burner, just occurred at 2 ~ 3 months the service life of holding together the flame cover of general burner ablating, wearing and tearing, need built-up welding could continue to use, hold together flame cover main body and will change in 1 year.And the service life of holding together the flame cover of this burner more than 1 year, a spot of ablation, wearing and tearing can just occur, and need the area of built-up welding minimum, can reach more than 2 ~ 3 years the service life that the flame cover is held together in emulation.2, externally the air quantity draught area is adjusted, i.e. ventilation adjustment has increased the adaptability to coal.3, the adjustment by the exit draught area, rather than adopt valve regulated can maximum use fluid pressure energy, and saves energy is saved coal consumption.
Description of drawings
Fig. 1 is the structural representation that flame cover four-way coal burner head is held together in emulation;
Fig. 2 is the partial enlarged drawing that the flame cover is held together in emulation among Fig. 1;
Fig. 3 is the structural representation that flame cover four-way coal burner afterbody is held together in emulation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further explained
As Fig. 1, Fig. 2 and shown in Figure 3, flame cover four-way coal burner is held together in emulation, comprise the fresh-air duct 9, coal airduct 10 and central tube 14 and the nozzle end that connect by sleeve pipe, nozzle end comprises ecto-entad outer air channel 1, coal air channel 2, interior air channel 3 and the air channel, center 4 of coaxial setting successively.The head in air channel 1 is provided with the emulation that is used to draw in the initial stage jet flames and holds together flame cover 5 outside; On central tube 14, be provided with center volume adjusting apparatus 13 and eddy flow monsoon intensity adjusting device 12; Air channel draught area adjusting device 11 outside on sleeve pipe, being provided with.
Emulation is held together flame cover 5 and is included in the some injection channels that are provided with on the exogenous wind passage of burner end, make fluid spray the back air-flow from burner and overlap 8 to the flame that holds together that the burner centerline direction tilts to spray at a certain angle, the inclined angle alpha between inclination jet angle and burner central axis is 2 ~ 25 °.The length that flame cover 5 is held together in emulation is 10 ~ 15mm.
The evenly distributed little rectangular channel (circular cylindrical) of outermost layer annular that flame cover four-way burner is held together in emulation is called outer air channel 1, and the air-flow of this passage of process is the axial DC wind that oriented slightly burner centerline direction draws in, also is called axial flow wind or exogenous wind.Exogenous wind is the part of a wind, sprays by proper proportion with interior wind.And adopt emulation to hold together flame cover 5 and hold together flame, it is strong that flame is concentrated, and flame profile is better.
The circular passage that flame cover four-way burner is held together in emulation is the coal dust passage in triple channel coal burner and four-way coal burner, is commonly called as to be coal air channel 2.
The circular passage that places the coal air channel is interior air channel 3, and its outlet is provided with spiral blade cyclone 6, and interior air channel forms eddy flow wind by the eddy flow groove.The size of eddy flow wind is bigger to the flame profile influence of coal dust firing, the control intake, must be by the gate valve in air channel in regulating and outer air channel, or the axial location of adjustable screw shape vane swirler 6, change swirl strength, control flame profile and combustion efficiency with this, reach best flame diameter and ideal length, make to calcine in the kiln and stablize.
The center wind that flame cover four-way burner is held together in emulation is by 7 ejections of the many apertures on the flameholder that is contained in 4 ends, air channel, center, its effect is the flue-gas temperature situation of regulating in the recirculating zone, regulate black duration and degree of heating length, making it has stronger adaptability to colm, anthracite.Bumer of light fuel is installed in the central tube, and its effect is igniting or mends fire.
The utility model provides a kind of emulation to hold together the method for designing of flame cover four-way burner; substituting of all simple structure variations of on this method basis, having done or same function parts; belong to the protection of this patent, as hold together on the flame cover rectangular opening is transformed into circular hole etc.
Claims (4)
1. flame cover four-way coal burner is held together in an emulation, comprise the inlet end and the nozzle end that connect by pipeline, the air inlet section comprises fresh-air duct (9), coal airduct (10) and central tube (14), nozzle segment comprises the ecto-entad outer air channel (1) of coaxial setting successively, coal air channel (2), interior air channel (3) and air channel, center (4), it is characterized in that: the head of air channel outside described (1) is provided with the emulation that is used to draw in the initial stage jet flames and holds together flame cover (5), described emulation is held together flame cover (5) and is included in the some injection channels that are provided with on the exogenous wind passage of burner end, is provided with can make fluid spray the back air-flow from burner to hold together flame cover (8) to what the burner centerline direction tilt to spray at a certain angle in injection channel.
2. flame cover four-way coal burner is held together in emulation according to claim 1, it is characterized in that: described certain angle α is 2 ~ 25 °.
3. flame cover four-way coal burner is held together in emulation according to claim 1, it is characterized in that: the outlet of air channel in described (3) is provided with spiral blade cyclone (6).
4. flame cover four-way coal burner is held together in emulation according to claim 1, it is characterized in that: be the some air-flow jet apertures (7) that are used to regulate the recirculating zone temperature that are provided with on the cyclone end in air channel, described center (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200683999U CN201983261U (en) | 2011-03-16 | 2011-03-16 | Four-passage pulverized coal burner with simulated flame gathering cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200683999U CN201983261U (en) | 2011-03-16 | 2011-03-16 | Four-passage pulverized coal burner with simulated flame gathering cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201983261U true CN201983261U (en) | 2011-09-21 |
Family
ID=44610720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200683999U Expired - Lifetime CN201983261U (en) | 2011-03-16 | 2011-03-16 | Four-passage pulverized coal burner with simulated flame gathering cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201983261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435625A (en) * | 2015-12-30 | 2016-03-30 | 天津中材工程研究中心有限公司 | Sludge-dispersing equipment used for cement kiln for denitration |
| CN112361835A (en) * | 2020-11-05 | 2021-02-12 | 湖北锋焰机电科技有限公司 | Four-channel pulverized coal burner for kiln and control method |
-
2011
- 2011-03-16 CN CN2011200683999U patent/CN201983261U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435625A (en) * | 2015-12-30 | 2016-03-30 | 天津中材工程研究中心有限公司 | Sludge-dispersing equipment used for cement kiln for denitration |
| CN112361835A (en) * | 2020-11-05 | 2021-02-12 | 湖北锋焰机电科技有限公司 | Four-channel pulverized coal burner for kiln and control method |
| CN112361835B (en) * | 2020-11-05 | 2022-07-15 | 湖北锋焰机电科技有限公司 | Four-channel pulverized coal burner for kiln and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |