CN100406804C - Burner capable of using various coal and little oil igniting - Google Patents
Burner capable of using various coal and little oil igniting Download PDFInfo
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- CN100406804C CN100406804C CN2005101324193A CN200510132419A CN100406804C CN 100406804 C CN100406804 C CN 100406804C CN 2005101324193 A CN2005101324193 A CN 2005101324193A CN 200510132419 A CN200510132419 A CN 200510132419A CN 100406804 C CN100406804 C CN 100406804C
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- pulverized coal
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- coal dust
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Abstract
The present invention discloses an oil-saving ignition combustor for various kinds of coal. The present invention comprises a pulverized coal precombustion chamber, a pulverized coal combustion chamber, a pulverized coal main combustion chamber and a primary air channel, wherein the pulverized coal precombustion chamber is connected with one end of the pulverized coal combustion chamber, a precombustion oil gun is arranged on the pulverized coal precombustion chamber, the pulverized coal combustion chamber is connected with one end of the pulverized coal main combustion chamber, a main oil gun and an auxiliary oil gun are arranged on the pulverized coal combustion chamber, the pulverized coal precombustion chamber is arranged on the other end of the pulverized coal combustion chamber away from the pulverized coal main combustion chamber, and the main oil gun and the auxiliary oil gun are arranged on the side wall of the pulverized coal combustion chamber. Pulverized coal enters a primary combustion zone to be ignited after being concentrated and preheated by arranging a pulverized coal precombustion device, and the sufficient combustion of various kinds (especially lean coal and anthracite) of pulverized coal in a cold state ignition initial stage can be ensured. The oil-saving ignition combustor has the advantages of simple structure, stability, reliability, no explosion, no coking, strong ignition capability and high speed, an oil saving rate can reach more than 90%, and the present invention is suitable for various kinds of pulverized coal and is used for the cold state ignition and the ultralow load combustion stability of pulverized coal boilers.
Description
Technical field
The present invention relates to a kind of burner, belong to igniting of pulverized-coal fired boiler cold conditions and ultra-low load smooth combustion apparatus, particularly relate to a kind of little oil burner that is suitable for all types of coals.
Background technology
For economy, reduction cost of electricity-generating, energy savings, the realization replace oil with coal that improves the operation of boiler and generating set, bring into use little oil gun to substitute big oil gun fuel ignition in the past and the steady combustion of underload throwing oil in the pulverized-coal fired boiler, Chinese patent ZL03255982.8 discloses a kind of cold state ignition under tiny oil and steady burning burner in ultra low load, can utilize micro-fuel oil direct firing coal-dust under the black furnace state by this device, save large-sized station boiler and rise furnace oil, and have ultra-low load steady combustion ability.But in this device, the coal dust flow velocity is big, very short through the time of pulverized coal combustor, cause the pulverized coal preheating time short, temperature increase is limited, and this device has only a little oil gun, coal dust intensification preheating and ignition must once be finished, therefore this device can only be applicable to the bituminous coal that ature of coal is good, fugitive constituent is high, and can not be used for main burner.When the low anthracite of fugitive constituent is lighted a fire when using all lower meager coal of caloric value and fugitive constituent or caloric value height, because preheating time in the combustion chamber is short at meager coal or anthracite, temperature can not significantly improve, the hydrocarbon of separating out is few, most of coal all can't be lighted, therefore, this tiny-oil ignition device has certain limitation.
Summary of the invention
At the deficiencies in the prior art, the technical problem to be solved in the present invention just provides a kind of under the black furnace condition, only use the fuel oil of trace, the coal dust that can light all kinds coal start boiler, and can be at the burner capable of using various coal and little oil igniting of smooth combustion under the low load condition.This burner both can be used as the pulverized-coal fired boiler main burner, also can be used as auxiliary burner.
For achieving the above object, a kind of burner capable of using various coal and little oil igniting of the present invention comprises pulverized coal combustor, coal dust main combustion chamber and a wind passage, and pulverized coal combustor links to each other with an end of coal dust main combustion chamber, has main oil gun on the pulverized coal combustor, also comprises the coal dust precombustion chamber; Described main oil gun is arranged on the sidewall of pulverized coal combustor, and this coal dust precombustion chamber is arranged on the other end away from the pulverized coal combustor of coal dust main combustion chamber, and the coal dust precombustion chamber links to each other with a described wind passage and has pre-oil combustion gun.
Further, also comprise auxiliary oil gun, this auxiliary oil gun is arranged on the coal dust precombustion chamber or pulverized coal combustor between pre-oil combustion gun and the pulverized coal combustor.
Further, the cross section of described coal dust precombustion chamber is circle; This coal dust precombustion chamber, increases after the diameter in its cross section dwindles gradually to the other end that links to each other with pulverized coal combustor more gradually from the one end.
Further, comprise that also the cross section is circular coal powder second enriched chamber, this coal powder second enriched chamber is arranged between described coal dust precombustion chamber and the pulverized coal combustor and the diameter in its cross section dwindles gradually.
Further, described pre-oil combustion gun is arranged on the sidewall of coal dust precombustion chamber, and a described wind passage is connected the end away from the coal dust precombustion chamber of pulverized coal combustor.
Further, described auxiliary oil gun is arranged between described main oil gun and the described pulverized coal combustor.
Compared with prior art, burner capable of using various coal and little oil igniting of the present invention is by being provided with the pre-burning device of coal dust, after the Pulverized Coal Concentration preheating, enter the primary zone again and light a fire, guaranteed that various types of coal dusts, particularly meager coal and anthracite are in the cold conditions abundant burning at igniting initial stage.This apparatus structure is simple, and is reliable and stable, non-detonating, and noncoking, igniting are exerted oneself greatly, speed is fast, and rate of economizing gasoline can reach more than 90%, is fit to various types of coal dusts and is used for igniting of pulverized-coal fired boiler cold conditions and ultra-low load steady combustion.
Description of drawings
Fig. 1 is the front view of burner capable of using various coal and little oil igniting of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing detailed description burner capable of using various coal and little oil igniting of the present invention:
Among Fig. 1, burner comprises that the cross section is circular the once concentration chamber 1 that is connected together successively, coal dust precombustion chamber 2, secondary concentration chamber 3, pulverized coal combustor 4, coal dust main chamber 5, coal powder recombustion chamber 6 and a wind carrier pipe 10.Wherein, once concentration chamber 1, coal dust precombustion chamber 2, secondary concentration chamber 3 and pulverized coal combustor 4 all are arranged in wind carrier pipe 10, and the end of a wind carrier pipe 10 links to each other with coal powder recombustion chamber 6 with coal dust main chamber 5.Pre-oil combustion gun sleeve pipe 11 is set on the sidewall of coal dust precombustion chamber 2, and the end of pre-oil combustion gun 7 is positioned at the middle part of this pre-oil combustion gun sleeve pipe 11, and pre-oil combustion gun sleeve pipe 11 constitutes oil combustion chamber 14 near the cavity front end of pulverized coal preheating chamber 2.The sidewall of pulverized coal combustor 4 is provided with main oil gun sleeve pipe 12 and auxiliary oil gun sleeve pipe 13.The end of main oil gun 8 is positioned at the middle part of this main oil gun sleeve pipe 12, and main oil gun sleeve pipe 12 constitutes oil combustion chamber 15 near the cavity front end of pulverized coal combustor 4.Auxiliary oil gun 9 is positioned at auxiliary oil gun sleeve pipe 13, and its end is near pulverized coal combustor 4.Pre-oil combustion gun sleeve pipe 11, main oil gun sleeve pipe 12 and the axis of auxiliary oil gun sleeve pipe 13 and all angled inclination of axis of a wind carrier pipe 10, once concentration chamber 1, coal dust precombustion chamber 2, secondary concentration chamber 3 and pulverized coal combustor 4 are tubaeform.The end that the diameter of section of once concentration chamber 1 is big relatively is the inlet of a wind, and the other end links to each other with the relative little end of diameter of section of coal dust precombustion chamber 2.The bigger end of the diameter of section of secondary concentration chamber 3 links to each other with an end of coal dust precombustion chamber 2, and the less end of the other end diameter of section of secondary concentration chamber 3 links to each other with pulverized coal combustor 4.Along the transport path direction of a wind, the diameter of section of pulverized coal combustor 4 increases gradually.One time wind carrier pipe 10 all has the annular gap with coal dust main chamber 5, coal powder recombustion chamber 6 connecting places.
During burner operation, at first use a small amount of coal dust after once concentration chamber 1 concentrates, enter in the coal dust precombustion chamber 2, after pre-oil combustion gun 7 igniting, oil combustion chamber 14 internal combustion of oil in pre-oil combustion gun sleeve pipe 11, the burned flame band a large amount of heats will concentrate the coal dust heating, because the sectional area of coal dust precombustion chamber 2 increases gradually, the flow velocity of coal dust slows down gradually, so prolonged the time of staying of coal dust in coal dust precombustion chamber 2, the temperature of coal dust is raise rapidly, and the fugitive constituent in the coal dust is by a large amount of sucking-offs.After coal dust after the heating concentrates through secondary concentration chamber 3 again, the fuel oil of main oil gun 8 ejections is in oil combustion chamber 15 internal combustion, its flame heats coal dust once more, along with the sectional area of pulverized coal combustor 4 strengthens gradually, the flow velocity of coal dust slows down once more, and the unburned coal dust of part is lighted in pulverized coal combustor 4.9 of auxiliary oil guns replenish fuel oil as required in pulverized coal combustor 4, help coal dust firing.The pulverized coal combustors that the coal dust of lighting enters coal dust main combustion chamber 5 and coal powder recombustion chamber 6 successively and some levels of being provided with as required link to each other, and with mix mutually from coal dust, air that the annular gap replenished after burn again, down to lighting whole coal dusts.
After one time wind entered from once concentration chamber 1, along with the diameter of section of once concentration chamber 1 dwindles gradually, the flow velocity of coal dust reduced, and coal dust is concentrated.After coal dust after concentrating enters coal dust precombustion chamber 2, part coal dust temperature raises and is lighted, because the diameter of section of coal dust precombustion chamber 2 increases gradually, the flow velocity of coal dust reduces, increase the time of staying of coal dust in coal dust precombustion chamber 2, helped the temperature increase of unburned coal dust.And enter in the secondary concentration chamber 3 that diameter of section reduces gradually when coal dust, this slows down the flow velocity of coal dust again, coal dust is concentrated once more, after coal dust after concentrating entered the pulverized coal combustor 4 that diameter of section increases gradually, the flame heat regulating that is sprayed by main oil gun 8 promoted temperature, and the temperature of unburned coal dust also obtains to raise once more, and flow velocity slows down, the time of heating up obtains prolonging, and the coal dust after the repairing that obtains auxiliary oil pipe 9 enters coal dust main combustion chamber 5 and coal powder recombustion chamber 6 burns away.
In addition, auxiliary oil gun 9 also can be arranged on the sidewall of coal dust precombustion chamber 2, and between pre-oil combustion gun 7 and secondary concentration chamber 3.
Claims (6)
1. a burner capable of using various coal and little oil igniting comprises pulverized coal combustor, coal dust main combustion chamber and a wind passage, and pulverized coal combustor links to each other with an end of coal dust main combustion chamber, has main oil gun on the pulverized coal combustor, it is characterized in that, also comprises the coal dust precombustion chamber; Described main oil gun is arranged on the sidewall of pulverized coal combustor, and this coal dust precombustion chamber is arranged on the other end away from the pulverized coal combustor of coal dust main combustion chamber, and the coal dust precombustion chamber links to each other with a described wind passage and has pre-oil combustion gun.
2. burner according to claim 1 is characterized in that, also comprises auxiliary oil gun, and this auxiliary oil gun is arranged on the coal dust precombustion chamber or pulverized coal combustor between pre-oil combustion gun and the pulverized coal combustor.
3. burner according to claim 2 is characterized in that the cross section of described coal dust precombustion chamber is circle; This coal dust precombustion chamber, increases after the diameter in its cross section dwindles gradually to the other end that links to each other with pulverized coal combustor more gradually from the one end.
4. burner according to claim 3 is characterized in that, comprises that also the cross section is circular coal powder second enriched chamber, and this coal powder second enriched chamber is arranged between described coal dust precombustion chamber and the pulverized coal combustor and the diameter in its cross section dwindles gradually.
5. burner according to claim 4 is characterized in that, described pre-oil combustion gun is arranged on the sidewall of coal dust precombustion chamber, and a described wind passage is connected the end away from the coal dust precombustion chamber of pulverized coal combustor.
6. burner according to claim 4 is characterized in that, described auxiliary oil gun is arranged between described main oil gun and the described pulverized coal combustor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101324193A CN100406804C (en) | 2005-12-23 | 2005-12-23 | Burner capable of using various coal and little oil igniting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101324193A CN100406804C (en) | 2005-12-23 | 2005-12-23 | Burner capable of using various coal and little oil igniting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1786579A CN1786579A (en) | 2006-06-14 |
| CN100406804C true CN100406804C (en) | 2008-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005101324193A Expired - Fee Related CN100406804C (en) | 2005-12-23 | 2005-12-23 | Burner capable of using various coal and little oil igniting |
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| CN (1) | CN100406804C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441953C (en) * | 2006-11-30 | 2008-12-10 | 艾佩克斯科技(北京)有限公司 | Micro-oil plasma composite ignition and combustion-stabilization method and device therefor |
| CN100453902C (en) * | 2007-02-07 | 2009-01-21 | 鞠胤红 | Smokeless coal gasification micro grease gun igniting pulverized coal burner |
| WO2009092234A1 (en) * | 2007-12-27 | 2009-07-30 | Beijing Guangyao Electricity Equipment Co., Ltd | An ac plasma ejection gun and its power supply method and a pulverized coal burner |
| CN101846315B (en) * | 2009-03-24 | 2012-07-04 | 烟台龙源电力技术股份有限公司 | Coal dust concentration device and coal dust burner with same |
| CN102032566B (en) * | 2009-09-27 | 2013-06-12 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and boiler with same |
| CN101846313A (en) * | 2010-06-13 | 2010-09-29 | 山西蓝天环保设备有限公司 | Coal dust industrial boiler having prechamber and taking high-quality coal dust as auxiliary fuel |
| US10473327B2 (en) * | 2016-06-09 | 2019-11-12 | General Electric Technology Gmbh | System and method for increasing the concentration of pulverized fuel in a power plant |
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| CN2371445Y (en) * | 1999-06-29 | 2000-03-29 | 曾锋 | Special three-stage lighting integrated pulverized coal direct burner for electric generating boiler |
| CN2493843Y (en) * | 2001-08-27 | 2002-05-29 | 王爱生 | Ignition burner for coal boiler |
| EP1371905A1 (en) * | 2001-02-27 | 2003-12-17 | Yantai Longyuan Power Technology Co. Ltd. | Assembled cathode and plasma igniter with such cathode |
| CN2630658Y (en) * | 2003-07-22 | 2004-08-04 | 杭州浙大天元科技有限公司 | Microoil cold-ignition and superlow-load stable-burning combustor |
| CN2670752Y (en) * | 2003-12-15 | 2005-01-12 | 程学忠 | Direct coal powder burner |
| CN2854368Y (en) * | 2005-12-23 | 2007-01-03 | 郭秀峰 | Micro-oil ignition burner for multiple type of coal |
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2005
- 2005-12-23 CN CN2005101324193A patent/CN100406804C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371445Y (en) * | 1999-06-29 | 2000-03-29 | 曾锋 | Special three-stage lighting integrated pulverized coal direct burner for electric generating boiler |
| EP1371905A1 (en) * | 2001-02-27 | 2003-12-17 | Yantai Longyuan Power Technology Co. Ltd. | Assembled cathode and plasma igniter with such cathode |
| CN2493843Y (en) * | 2001-08-27 | 2002-05-29 | 王爱生 | Ignition burner for coal boiler |
| US20050028712A1 (en) * | 2001-08-27 | 2005-02-10 | Aisheng Wang | Coal-burning boiler's ignition burner |
| CN2630658Y (en) * | 2003-07-22 | 2004-08-04 | 杭州浙大天元科技有限公司 | Microoil cold-ignition and superlow-load stable-burning combustor |
| CN2670752Y (en) * | 2003-12-15 | 2005-01-12 | 程学忠 | Direct coal powder burner |
| CN2854368Y (en) * | 2005-12-23 | 2007-01-03 | 郭秀峰 | Micro-oil ignition burner for multiple type of coal |
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| Publication number | Publication date |
|---|---|
| CN1786579A (en) | 2006-06-14 |
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Owner name: GUO XIUFENG Free format text: FORMER OWNER: AIPEIX SCI. + TECH, (BEIJING) CO., LTD. Effective date: 20060728 |
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Effective date of registration: 20060728 Address after: 100085 room A, block A418, No. 5, East Road, Haidian District, Beijing Applicant after: Guo Xiufeng Address before: 100085 room A, block A418, No. 5, East Road, Haidian District, Beijing Applicant before: Aipeix Sci. & Tech, (Beijing) Co., Ltd. |
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Owner name: AIPEIX SCI. & TECH, (BEIJING) CO., LTD. Free format text: FORMER OWNER: GUO XIUFENG Effective date: 20070713 |
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Effective date of registration: 20070713 Address after: 100085 room A, block A418, No. 5, East Road, Haidian District, Beijing Applicant after: Aipeix Sci. & Tech, (Beijing) Co., Ltd. Address before: 100085 room A, block A418, No. 5, East Road, Haidian District, Beijing Applicant before: Guo Xiufeng |
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