CN200952702Y - Pulverized-coal fired boiler vortex burner - Google Patents
Pulverized-coal fired boiler vortex burner Download PDFInfo
- Publication number
- CN200952702Y CN200952702Y CN 200620107392 CN200620107392U CN200952702Y CN 200952702 Y CN200952702 Y CN 200952702Y CN 200620107392 CN200620107392 CN 200620107392 CN 200620107392 U CN200620107392 U CN 200620107392U CN 200952702 Y CN200952702 Y CN 200952702Y
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- China
- Prior art keywords
- pulverized coal
- coal dust
- combustion chamber
- combustor
- pulverized
- Prior art date
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- 239000003245 coal Substances 0.000 title claims description 103
- 239000002817 coal dust Substances 0.000 claims abstract description 45
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 230000003116 impacting effect Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 31
- 239000000295 fuel oil Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 2
- 238000010304 firing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000003134 recirculating effect Effects 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000001535 kindling effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Abstract
The utility model discloses a coal dust boiler swirl-flow burner, including a coal dust conduit. The coal dust conduit is sequentially equipped with a bumping coal dust concentrator and a coal dust combustion chamber along the flowing direction of the coal dust. The oil combustion chamber extends from the exterior of the coal dust conduit to the coal dust combustion chamber. The oil combustion chamber is equipped with an oil burner. The coal dust combustion chamber is equipped with a flame converting ring. The exterior of the outlet of the coal dust conduit is equipped with a secondary bellows. The secondary bellows is provided with a secondary wind inlet. The outlet of the secondary bellows is communicated with the coal dust conduit. The coal dust combustion chamber is the stage coal dust combustion chamber. The stage coal dust combustion chamber comprises a preceding stage coal dust combustion chamber and a post stage coal dust combustion chamber. The front end of the post stage coal dust combustion chamber is sleeved outside the back end of the preceding stage coal dust combustion chamber. The utility model utilizes a method of fractional combustion of coal dust, which makes ues of little oil to light up a great deal of coal dust, thereby saving a great deal of fuel oil.
Description
(1) technical field
The utility model relates to a kind of boiler-burner, particularly relates to a kind of pulverized-coal fired boiler turbulent burner.
(2) background technology
Large coal powder boiler uses the burner firing coal-dust, during the igniting of boiler black furnace, use the big oil gun (exerting oneself 1.0～2.0 tons/hour for single) that 1-12 only is arranged in the secondary wind combustor successively and heat whole burner hearth, could drop into coal dust firing when burner hearth is raised to uniform temperature.The annual about oil consumption 1000-2000 ton of a general 300MW boiler black furnace kindling and low-load combustion-stabilizing, particularly newly-built unit, the newly-built unit boiler of 600MW, the debug phase needs oil consumption 2500-4000 ton.According to statistics, annual station boiler oil consumption needs ten thousand tons of fuel oils of 200-250 approximately, amounts to hundred million yuan of the about 100-125 of RMB.
Oil is the rare strategic resource of China, and China is a petroleum import big country, and along with international variation, fuel price is high, and development brings certain pressure to Chinese national economy.
From the angle of calory burning, the calorific value of 1 ton of light diesel fuel is equivalent to the calorific values of 2 tons of mark coals, and 1 ton of light diesel fuel price is about 10 tons of mark coal price lattice, that is to say that the heat that uses 2 tons of mark coals and use 1 ton of light diesel fuel generation is identical, but price differs 9 times.If therefore can use a kind of burner, open heater stage at the boiler black furnace and just can directly light a large amount of coal dusts with a spot of fuel oil, with saving a large amount of fuel oils, produce huge economic benefit and social benefit.
Therefore, non-oil ignition technology or few oily pulverized coal ignition technology are just meeting China's present stage fundamental realities of the country.On the turbulent burner of using effective petroleum economizer is not installed at present, is made and cause the waste of fuel oil by a large amount of fuel oil that in the time of firing coal-dust, need come into operation.
(3) utility model content
The purpose of this utility model provides the high pulverized-coal fired boiler turbulent burner of a kind of fuel-saving efficiency.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows: a kind of pulverized-coal fired boiler turbulent burner, comprise pulverized coal channel, pulverized coal channel upper edge coal dust flow direction is provided with impacting type pulverized coal concentrator and pulverized coal combustor successively, oil combustion chamber stretches to pulverized coal combustor from the pulverized coal channel outside, in the described oil combustion chamber oil burner is housed, be provided with folding flame ring in the described pulverized coal combustor, the outside of the pulverized coal channel port of export is provided with secondary air box, have the secondary wind inlet on the secondary air box, the outlet of secondary air box communicates with pulverized coal channel, described pulverized coal combustor is the stagewise pulverized coal combustor, described stagewise pulverized coal combustor comprises prime pulverized coal combustor and back level pulverized coal combustor, and described back level pulverized coal combustor front end sleeve is in the outside of prime pulverized coal combustor rear end.
Further, in the described secondary air box outlet adjustable swirl vane is installed.
Further, described stagewise pulverized coal combustor comprises first pulverized coal combustor and second pulverized coal combustor, and second level pulverized coal combustor front end sleeve is connected on first order pulverized coal combustor rear end, and described oil combustion chamber stretches in first pulverized coal combustor.
As required, can also design composite chambers such as three grades of combustion chambers, level Four combustion chamber.
The quantity of described swirl vane is 4-20.
After adopting said structure, oil is fully burning in oil combustion chamber, the thermal-flame that produces enters in the first order pulverized coal combustor, lighted through the thick coal culm that the impacting type pulverized coal concentrator concentrates, burned flame enters second level pulverized coal combustor, light the coal dust in the pulverized coal combustor of the second level, the coal dust of having lighted continues to spray in the burner hearth, for boiler provides heat.The a spot of oil of the utility model by coal dust fractional combustion and energy level amplification principle, can be realized firing a large amount of coal dusts with a small amount of oil drop, reaches the purpose of fuel-economizing.
The swirl vane in secondary air box exit makes at this exit formation swirling eddy, this swirling eddy can produce a recirculating zone at burner outlet, a large amount of spent coal fines high-temperature flue gases is entrainmented back the pulverized coal channel outlet, a large amount of unburned pulverized coal particles is also entrainmented in this recirculating zone simultaneously, the speed of these pulverized coal particles is minimized, increased the time that stops, help absorbing more radiations heat energy, improve the ability of catching fire, backflow is entrainmented provides the low speed that is suitable for flame propagation flow region, makes flame to stablize.
The beneficial effects of the utility model mainly show: 1, by coal dust fractional combustion and energy level amplification principle, can realize firing with a small amount of oil drop the purpose of a large amount of coal dusts; 2, swirl vane has been installed in the secondary air box exit, has improved the ability of catching fire of coal dust, thereby has improved the stability of burning; 3, the stability because of burning is improved, so the burning coal scope is wide, can adapt to brown coal, bituminous coal, meager coal and anthracite etc.; 4, fuel-saving efficiency height, this device can be lighted a large amount of coal dusts (1-10 ton/hour) with a spot of oil (15～40 kilograms/hour) when boiler black furnace kindling, realize the purpose of replace oil with coal; 5, having underload (40%) does not throw the steady combustion function of oil and ultra-low load (10-30%) and throws a small amount of oily (10-20kg/h) and surely fire function; 6, because the fuel oil input amount is few, and the burn-off rate height can not stick on the cleaner, the electric precipitation that therefore after ignition of the boiler, promptly can come into operation, environment protecting is good; 7, igniting back boiler coal-ash burn-off rate height (more than 85%), fly ash combustible material is low, and the boiler efficiency height does not have influence to cleaner; 8, the system reform is simple, and cost is low.
(4) description of drawings
Fig. 1 is the structural representation of pulverized-coal fired boiler turbulent burner.
(5) specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Pulverized-coal fired boiler turbulent burner shown in Figure 1, comprise pulverized coal channel 3, pulverized coal channel 3 comprises bent tube section and straight-tube portion, be provided with impacting type pulverized coal concentrator 4 successively and the stagewise pulverized coal combustor is first order pulverized coal combustor 5 and second level pulverized coal combustor 7 along the coal dust flow direction in the straight-tube portion of pulverized coal channel 3, second level pulverized coal combustor is socketed in the outside, rear end of first order pulverized coal combustor 5, the afterbody of first order pulverized coal combustor 5 is provided with folding flame ring 6, and the quantity of folding flame ring 6 is 1-3; Pulverized coal channel 3 is furnished with an oil combustion chamber 2 that stretches to first order pulverized coal combustor 5 from the pipeline outside at bent tube section to the place of straight-tube portion transition, this oil combustion chamber 2 is parallel with the straight-tube portion of pulverized coal channel 3 and be positioned at the center of this straight tube, and oil burner 1 is housed in the oil combustion chamber 2; The outside of pulverized coal channel 3 ports of export is provided with secondary air box 8, have secondary wind inlet 10 on the secondary air box, the outlet 11 of secondary air box communicates with the outlet of pulverized coal channel, in the secondary air box outlet 11 swirl vane 9 is installed, the swirl vane that described swirl vane 9 can be regulated for angle, when angle changed, the intensity of swirling eddy also changed thereupon, and the quantity of this adjustable swirl vane is 4-20.
The material of oil combustion chamber 2 is preferably the abrasionproof pottery, in addition, because arrange distance, guarantees firing coal-dust in order to keep flame heat regulating, and selected materials need have the insulation effect.
Present embodiment is at first put oil burner 1 when starting ignition, fuel oil is fully burning in oil combustion chamber 2, and the thermal-flame of generation enters in the first order pulverized coal combustor 5; The coal dust of coming in from the pulverized coal channel import at first is condensed into high concentration pulverized coal through impacting type pulverized coal concentrator 4, because thick coal culm catches fire than thin powdered coal is easy in boiler, so impacting type pulverized coal concentrator 4 helps coal powder ignition and steady combustion; Fire burns through the high concentration pulverized coal that concentrates, afterbody at first order pulverized coal combustor 5 is provided with folding flame ring 6, folding flame ring 6 can make the coal dust of burning obtain a buffering in the combustion chamber, slow down the speed that flame outwards spreads, coal dust is further heated, promote coal dust fire burns, improve steady combustion property; Burned flame continues to enter second level pulverized coal combustor 7, lights the coal dust in the second level pulverized coal combustor 7, and afterwards, the breeze airflow of having lighted sprays in the burner hearth and burns away, and provides the boiler kindling needed heat.The method that present embodiment takes Pulverized Coal Concentration and coal dust classification to send into is utilized a spot of oil drop combustion first order coal dust, and the heat that utilizes coal dust self to send then amplifies step by step, fires a large amount of coal dusts with realization with a small amount of oil drop, thereby has saved a large amount of fuel oils.
The air of coming in from secondary air box import 10 contacts with coal dust by secondary air box outlet 11, and the oxygen of abundance can be provided for the burning of coal dust; In addition, outlet 11 places of secondary air box 8 are equipped with swirl vane 9, swirl vane 9 forms swirling eddy in this exit, make burner outlet produce a recirculating zone, a large amount of spent coal fines high-temperature flue gases and unburned pulverized coal particle are entrainmented to this recirculating zone, and the speed of coal dust is minimized, and the time of its stop increases, help absorbing more radiations heat energy, improve the ability of catching fire; Backflow is entrainmented provides the low speed that is suitable for flame propagation flow region, make flame to stablize, and reflux and to entrainment high-temperature flue gas the Convective Heating of pulverized coal particle has been promoted the temperature of coal dust, help coal dust fire burns, thereby also improved the efficient of fuel-economizing.
Claims (4)
1, a kind of pulverized-coal fired boiler turbulent burner, comprise pulverized coal channel, pulverized coal channel upper edge coal dust flow direction is provided with impacting type pulverized coal concentrator and pulverized coal combustor successively, oil combustion chamber stretches to pulverized coal combustor from the pulverized coal channel outside, in the described oil combustion chamber oil burner is housed, be provided with folding flame ring in the described pulverized coal combustor, the outside of the pulverized coal channel port of export is provided with secondary air box, have the secondary wind inlet on the secondary air box, the outlet of secondary air box communicates with pulverized coal channel, it is characterized in that: described pulverized coal combustor is the stagewise pulverized coal combustor, described stagewise pulverized coal combustor comprises prime pulverized coal combustor and back level pulverized coal combustor, and described back level pulverized coal combustor front end sleeve is in the outside of prime pulverized coal combustor rear end.
2, turbulent burner according to claim 1 is characterized in that: in the described secondary air box outlet adjustable swirl vane is installed.
3, turbulent burner according to claim 1 and 2, it is characterized in that: described stagewise pulverized coal combustor comprises first pulverized coal combustor and second pulverized coal combustor, second level pulverized coal combustor front end sleeve is connected on first order pulverized coal combustor rear end, and described oil combustion chamber stretches in first pulverized coal combustor.
4, turbulent burner according to claim 2 is characterized in that: the quantity of described swirl vane is 4-20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107392 CN200952702Y (en) | 2006-08-30 | 2006-08-30 | Pulverized-coal fired boiler vortex burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107392 CN200952702Y (en) | 2006-08-30 | 2006-08-30 | Pulverized-coal fired boiler vortex burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200952702Y true CN200952702Y (en) | 2007-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620107392 Expired - Fee Related CN200952702Y (en) | 2006-08-30 | 2006-08-30 | Pulverized-coal fired boiler vortex burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200952702Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725969B (en) * | 2010-01-19 | 2011-08-17 | 中国计量学院 | Low-NOx pulverized coal burner |
| CN102269424A (en) * | 2011-04-26 | 2011-12-07 | 向卫 | Oxygen enrichment plasma oil-free ignition and stable combustion method and device |
| CN102865578A (en) * | 2012-10-18 | 2013-01-09 | 余建辉 | Oil-coal dual-purpose burner |
| CN104879746A (en) * | 2015-06-03 | 2015-09-02 | 江西前程新能源科技有限公司 | Biomass semi-gasification combustion equipment |
| CN110805899A (en) * | 2019-11-16 | 2020-02-18 | 徐州赛欧电子科技有限公司 | Electric electronic combustion equipment and using method thereof |
| CN111486450A (en) * | 2020-05-22 | 2020-08-04 | 天津国电津能热电有限公司 | Pulverized coal burner |
-
2006
- 2006-08-30 CN CN 200620107392 patent/CN200952702Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725969B (en) * | 2010-01-19 | 2011-08-17 | 中国计量学院 | Low-NOx pulverized coal burner |
| CN102269424A (en) * | 2011-04-26 | 2011-12-07 | 向卫 | Oxygen enrichment plasma oil-free ignition and stable combustion method and device |
| CN102865578A (en) * | 2012-10-18 | 2013-01-09 | 余建辉 | Oil-coal dual-purpose burner |
| CN102865578B (en) * | 2012-10-18 | 2017-09-05 | 余建辉 | Oil/coal dual-purpose burner |
| CN104879746A (en) * | 2015-06-03 | 2015-09-02 | 江西前程新能源科技有限公司 | Biomass semi-gasification combustion equipment |
| CN110805899A (en) * | 2019-11-16 | 2020-02-18 | 徐州赛欧电子科技有限公司 | Electric electronic combustion equipment and using method thereof |
| CN111486450A (en) * | 2020-05-22 | 2020-08-04 | 天津国电津能热电有限公司 | Pulverized coal burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU XINJI ENERGY SCIENCE CO., LTD. Free format text: FORMER OWNER: ZHANG LIANBING Effective date: 20071221 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071221 Address after: Room 1-606, North and South business harbor, 71 Wenzhou Road, Zhejiang, Hangzhou Province, China: 310011 Patentee after: HANGZHOU XINJI ENERGY TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang Province, Dengyun Road No. 337 River Jiayuan 9-3-103, zip code: 310011 Patentee before: Zhang Lianbing |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 39, 10 Cheung Road, Hangzhou, Zhejiang, Gongshu District: 310011 Patentee after: HANGZHOU XINJI ENERGY TECHNOLOGY CO., LTD. Address before: Room 1-606, North and South business harbor, 71 Wenzhou Road, Zhejiang, Hangzhou Province, China: 310011 Patentee before: HANGZHOU XINJI ENERGY TECHNOLOGY CO., LTD. |
|
| 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 |