CN104819463A - Pulverized coal burner - Google Patents
Pulverized coal burner Download PDFInfo
- Publication number
- CN104819463A CN104819463A CN201510265702.7A CN201510265702A CN104819463A CN 104819463 A CN104819463 A CN 104819463A CN 201510265702 A CN201510265702 A CN 201510265702A CN 104819463 A CN104819463 A CN 104819463A
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- CN
- China
- Prior art keywords
- coal
- blade
- airduct
- pipe
- fire
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
- F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air beyond the fire, i.e. nearer the smoke outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A pulverized coal burner comprises an outer barrel, an inner barrel, a secondary wind blade, a wind screen, an ignition wind blade, a coal preventing plate, a cone, a coal blade, an electric actuator, a fire observing pipe I, a pulverized coal pipe, a fire observing pipe II, a burning torch, an ignition wind pipe and a wind pipe, and further comprises a pre-burning cone loop, and the pre-burning cone loop is connected above the outer barrel; the pulverized coal pipe is connected with the inner wall of the outer barrel, and is connected with the inner wall of the ignition wind pipe through the ignition wind blade; the outer wall of the ignition wind pipe is connected with the wind screen; the wind screen is connected with the inner wall of the inner barrel through the secondary wind blade; the wind pipe is connected with the outer barrel and the ignition wind pipe; the coal preventing plate is connected with the cone; the cone is connected with the coal blade; and the coal blade is connected with the pulverized coal pipe. The structure of the pulverized coal burner is cooled through air cooling, the burner operates normally, the problem that the burner is burnt out during water cooling or the wall of a pre-burning chamber generates fissures is solved, accidents are avoided, and the problem that ash accumulation caused by coking is easy to generate in the pulverized coal burner in the prior art is solved.
Description
Technical field
The present invention relates to boiler combustion field, is a kind of coal burner specifically.
Background technology
Still the chain furnace of poor efficiency, high energy consumption, high pollution is there is in a large number in China's present stage, wherein the coal combustion rate of chain furnace only has 65%, and the coal combustion rate of fluidized-bed combustion boiler also only has 85%, clean combustion cannot be realized, there is using energy source problem that is inefficient, high energy consumption, and there is energy supply problem geographically and the easy coking dust stratification of existing coal-powder boiler burner in oil-gas boiler, need human at periodic intervals to clear up, time-consumingly to take a lot of work.
Summary of the invention
In sum, the object of the present invention is to provide a kind of coal burner.
The object of the invention is to be realized by following technology:
A kind of coal burner, comprise urceolus, inner core, Secondary Air blade, deep bead, igniting air blade, spillplate, centrum, coal blade, YE, sight fire tube I, coal pipe, sight fire tube II, burning torch, igniting airduct, airduct, also comprise a pre-burning cone ring, above urceolus, connect pre-burning cone ring; Coal pipe is connected with outer tube inner wall, airduct inwall is connected by air blade of lighting a fire with lighting a fire; Igniting airduct outer wall is connected with deep bead; Deep bead is connected with inner core inwall by Secondary Air blade; Airduct is connected with urceolus, airduct of lighting a fire; Spillplate is connected with centrum; Centrum is connected with coal blade; Coal blade is connected with coal pipe.
Be provided with dividing plate in above-mentioned airduct, ignition air duct and secondary air duct will be divided in airduct.
Air door I is provided with in above-mentioned ignition air duct; Air door II is provided with in secondary air duct;
Above-mentioned YE is for controlling air door I and air door II.
Above-mentioned burning torch is connected with deep bead; The rifle head of burning torch exposes to precombustion chamber.
One end of above-mentioned sight fire tube I is connected with deep bead, and deep bead forms flame-observing hole; Its other end is provided with camera; One end of described sight fire tube II is connected with deep bead, and deep bead forms flame-observing hole; Its other end is provided with fire inspection instrument.
Above-mentioned camera is for observing precombustion chamber; Described fire inspection instrument, for detecting precombustion chamber combustion situation, plays safeguard protection effect;
Secondary air chamber is formed between above-mentioned urceolus and inner core; Inner core and deep bead constitute precombustion chamber; Air compartment of lighting a fire is formed between coal pipe and igniting airduct.
Above-mentioned camera is connected with computer with fire inspection instrument.
Advantage of the present invention and beneficial effect:
1, project organization formula of the present invention is by air-cooled cooling, and burner normally runs, solve occur in cooling by water burn out burner or make pre-burning locular wall produce the problem in crack, avoid the generation of accident.
2, the present invention's igniting is more reliable and more stable, and coal dust obtains fully stable burning, solves the problem easily producing coking dust stratification in prior art in coal dust firing.
3, Duct design of the present invention air door, by damper, make flame controlled, temperature is adjustable.
4, the present invention connects pre-burning cone ring above urceolus, and the flame allowing coal combustion produce is more concentrated, makes the more stable of coal combustion in precombustion chamber, and flame is not easy to extinguish, thus solves the problem that coking pasted by existing boiler.
5, the present invention adopts the structural design of urceolus inner core, and form secondary air chamber, precombustion chamber low-temperature stabilization is burnt, and temperature equalization in overall burner hearth, plays desulphurization denitration, reduces the discharge capacity of nitrogen oxide.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-urceolus, 2-inner core, 3-Secondary Air blade, 4-deep bead, 5-light a fire air blade, 6-spillplate, 7-precombustion chamber, 8-centrum, 9-coal blade, 10-YE, 11-air door I, 12-ignition air duct, 13-secondary air duct, 14-air door II, 15-sees fire tube I, 16-lights a fire air compartment, 17-camera, 18-coal pipe, 19-fire inspection instrument, 20-see fire tube II, 21-burning torch, 22-secondary air chamber, 23-light a fire airduct, 24-airduct, 25-pre-burning cone ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
As shown in Figure 1, a kind of coal burner, comprise urceolus 1, inner core 2, Secondary Air blade 3, deep bead 4, igniting air blade 5, spillplate 6, centrum 8, coal blade 9, YE 10, see fire tube I 15, coal pipe 18, sight fire tube II 20, burning torch 21, igniting airduct 23, airduct 24, also comprise a pre-burning cone ring 25, above urceolus 1, connect pre-burning cone ring 25; Coal pipe 18 is connected with urceolus 1 inwall, airduct 23 inwall is connected by air blade 5 of lighting a fire with lighting a fire; Igniting airduct 23 outer wall is connected with deep bead 4; Deep bead 4 is connected with inner core 2 inwall by Secondary Air blade 3; Airduct 24 is connected with urceolus 1, airduct 23 of lighting a fire; Spillplate 6 is connected with centrum 8; Centrum 8 is connected with coal blade 9; Coal blade 9 is connected with coal pipe 18; Be provided with dividing plate in airduct 24, ignition air duct 12 and secondary air duct 13 will be divided in airduct 24; Air door I 11 is provided with in ignition air duct 12; Air door II 14 is provided with in secondary air duct 13; YE 10 is for controlling air door I 11 and air door II 14; Burning torch 21 is connected with deep bead 4; The rifle head of burning torch 21 exposes to precombustion chamber 7; The one end seeing fire tube I 15 is connected with deep bead 4, and deep bead forms flame-observing hole; Its other end is provided with camera 17; The one end seeing fire tube II 20 is connected with deep bead 4, and deep bead forms flame-observing hole; Its other end is provided with fire inspection instrument 19.
Camera 17 is for observing precombustion chamber 7; Described fire inspection instrument 19, for detecting precombustion chamber 7 combustion situation, plays safeguard protection effect, and camera 17 is connected with computer with fire inspection instrument 19.
Secondary air chamber 22 is formed between urceolus 1 and inner core 2; Inner core 2 and deep bead 4 constitute precombustion chamber 7; Air compartment 16 of lighting a fire is formed between coal pipe 18 and igniting airduct 23.
Embodiment
During boiler startup, the burner hearth of boiler cleans, and the rifle head of burning torch 21 is lighted, by YE 10 damper I 11 and air door II 14; Entering coal by First air in coal pipe 18, when entering precombustion chamber 7, under the effect of spillplate 6 and centrum 8, coal dust and First air being disperseed injection precombustion chamber 7 in; Coal dust Thorough combustion in precombustion chamber 7.
By YE 10 damper I 11, the wind in ignition air duct 12 enters precombustion chamber 7 by igniting air compartment 16, and provide oxygen to precombustion chamber 7, allow coal dust smooth combustion, burner hearth low temperature harmonious combustion, plays desulphurization denitration, reduces the discharge capacity of nitrogen oxide.
By YE 10 damper II 14, the wind in secondary air duct 13 enters secondary air chamber 22, ventilates to secondary air chamber 22, while reducing inner core 2 wall temperature, allows the coal dust in precombustion chamber 7 directly enter burner hearth, does not spread to surrounding; Noncoking dust stratification in the precombustion chamber making burner.
The wind of secondary air chamber 22 enters precombustion chamber 7 by Secondary Air blade 3, the wind of precombustion chamber 7 blows out along the conical surface of pre-burning cone ring 25 to cone mouth, the flame allowing coal combustion produce is more concentrated, make the more stable of coal combustion in precombustion chamber, flame is not easy to extinguish, coal dust in precombustion chamber 7 evenly, solve existing boiler and paste the problem of coking.
Claims (8)
1. a coal burner, comprise urceolus (1), inner core (2), Secondary Air blade (3), deep bead (4), igniting air blade (5), spillplate (6), centrum (8), coal blade (9), YE (10), see fire tube I (15), coal pipe (18), sight fire tube II (20), burning torch (21), igniting airduct (23), airduct (24), it is characterized in that: also comprise a pre-burning cone ring (25), urceolus (1) top connects pre-burning cone ring (25); Coal pipe (18) is connected with urceolus (1) inwall, airduct (23) inwall is connected by air blade (5) of lighting a fire with lighting a fire; Igniting airduct (23) outer wall is connected with deep bead (4); Deep bead (4) is connected with inner core (2) inwall by Secondary Air blade (3); Airduct (24) is connected with urceolus (1), airduct (23) of lighting a fire; Spillplate (6) is connected with centrum (8); Centrum (8) is connected with coal blade (9); Coal blade (9) is connected with coal pipe (18).
2. a kind of coal burner as claimed in claim 1, is characterized in that: be provided with dividing plate in described airduct (24), will be divided into ignition air duct (12) and secondary air duct (13) in airduct (24).
3. a kind of coal burner as claimed in claim 2, is characterized in that: be provided with air door I (11) in described ignition air duct (12); Air door II (14) is provided with in secondary air duct (13).
4. a kind of coal burner as claimed in claim 1, is characterized in that: described YE (10) is for controlling air door I (11) and air door II (14).
5. a kind of coal burner as claimed in claim 1, is characterized in that: described burning torch (21) is connected with deep bead (4); The rifle head of burning torch (21) exposes to precombustion chamber (7).
6. a kind of coal burner as claimed in claim 1, is characterized in that: one end of described sight fire tube I (15) is connected with deep bead (4), and deep bead forms flame-observing hole; Its other end is provided with camera (17); One end of described sight fire tube II (20) is connected with deep bead (4), and deep bead (4) forms flame-observing hole; Its other end is provided with fire inspection instrument (19).
7. a kind of coal burner as claimed in claim 6, is characterized in that: described camera (17) is for observing precombustion chamber (7); Described fire inspection instrument (19), for detecting precombustion chamber (7) combustion situation, plays safeguard protection effect.
8. a kind of coal burner as claimed in claim 1, is characterized in that: form secondary air chamber (22) between described urceolus (1) and inner core (2); Inner core (2) and deep bead (4) constitute precombustion chamber (7); Air compartment (16) of lighting a fire is formed between coal pipe (18) and igniting airduct (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510265702.7A CN104819463B (en) | 2015-05-24 | 2015-05-24 | Coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510265702.7A CN104819463B (en) | 2015-05-24 | 2015-05-24 | Coal burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104819463A true CN104819463A (en) | 2015-08-05 |
| CN104819463B CN104819463B (en) | 2017-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510265702.7A Active CN104819463B (en) | 2015-05-24 | 2015-05-24 | Coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104819463B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201680364U (en) * | 2010-04-06 | 2010-12-22 | 山西蓝天环保设备有限公司 | Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers |
| CN102454984A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Air channel ignition system and ignition burner under bed |
| CN103196137A (en) * | 2012-01-04 | 2013-07-10 | 刘柏谦 | Multi-burner pulverized coal combustion device |
| EP2623861A1 (en) * | 2010-09-30 | 2013-08-07 | Babcock-Hitachi Kabushiki Kaisha | Combustion system and method for operating same |
| CN103615717A (en) * | 2013-10-24 | 2014-03-05 | 中国计量学院 | Novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor |
| CN104501145A (en) * | 2014-12-24 | 2015-04-08 | 山西蓝天环保设备有限公司 | Self-preheating and sectionalized pulverized coal combustion low-NOx combustion device and method |
| CN204678334U (en) * | 2015-05-24 | 2015-09-30 | 杨飞 | Coal burner |
-
2015
- 2015-05-24 CN CN201510265702.7A patent/CN104819463B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201680364U (en) * | 2010-04-06 | 2010-12-22 | 山西蓝天环保设备有限公司 | Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers |
| EP2623861A1 (en) * | 2010-09-30 | 2013-08-07 | Babcock-Hitachi Kabushiki Kaisha | Combustion system and method for operating same |
| CN102454984A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Air channel ignition system and ignition burner under bed |
| CN103196137A (en) * | 2012-01-04 | 2013-07-10 | 刘柏谦 | Multi-burner pulverized coal combustion device |
| CN103615717A (en) * | 2013-10-24 | 2014-03-05 | 中国计量学院 | Novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor |
| CN104501145A (en) * | 2014-12-24 | 2015-04-08 | 山西蓝天环保设备有限公司 | Self-preheating and sectionalized pulverized coal combustion low-NOx combustion device and method |
| CN204678334U (en) * | 2015-05-24 | 2015-09-30 | 杨飞 | Coal burner |
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| Publication number | Publication date |
|---|---|
| CN104819463B (en) | 2017-03-01 |
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