CN200979156Y - General coal dust micro-oil igniting burner - Google Patents
General coal dust micro-oil igniting burner Download PDFInfo
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- CN200979156Y CN200979156Y CN 200620136245 CN200620136245U CN200979156Y CN 200979156 Y CN200979156 Y CN 200979156Y CN 200620136245 CN200620136245 CN 200620136245 CN 200620136245 U CN200620136245 U CN 200620136245U CN 200979156 Y CN200979156 Y CN 200979156Y
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- combustion
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Abstract
The utility model relates to an all-purpose coal fines mini-oil lighting combustor, wherein one end of a coal fines passage is a coal fines air bleed and the other end is a flame sprayer. The coal fines passage at the coal fines air bleed is provided with a second combusting cartridge, an inner wall of the coal fines passage at the second grade combusting cartridge inlet is provided with a first grade concentrator, and the inner wall at the second grade combusting cartridge inlet is provided with a second grade concentrator. The second grade combusting cartridge is inwardly equipped with a combustion stabilization coating, which equips a flame stabilization device communicating with a doper at the coal fines inlet. The combustion stabilization coating communicates with the flame stabilization device, the space in the combustion stabilization coating comprises a core combusting chamber, and the space in the second grade combustion chamber outlet comprises a second grade combusting chamber. The space in the flame sprayer of the coal fines passage comprises an ignition chamber, and the core combusting chamber, the second grade combusting chamber and the ignition chamber are successively arranged along the axial direction of the coal fines passage. The utility model solves the technical problems of bad reliability, large oil consumption, high cost and small coals adaptability range of the background techniques. The system of the utility model has an excellent stability performance and reaches an oil saving rate of higher than 95% for starting.
Description
Technical field
The utility model relates to a kind of start-up burner of coal-powder boiler, is specifically related to a kind of general purpose coal dust micro-oil igniting burner.
Background technology
Rich coal resources in China, but coal is changeable, ature of coal is relatively poor, and breeze airflow is difficult to catch fire and after-flame.
Power industry is main energy sources with coal, and a large amount of power plant use anthracite, colm, meager coal, and its oil consumption is much higher than the power plant that uses brown coal, bituminous coal.
At present, during the black furnace ignition trigger of thermal power plant, generally adopt the large-scale oil combustion device heating coal dust burner hearth that is arranged in the overfiren air port, continue to heat a few hours, burner hearth is all reached a high temperature everywhere.Drop into coal dust firing then, and mix and burn certain load.Progressively remove oil at last again.The startup oil consumption of this method is very big, when the total specified fuel consumption of oil gun is about the boiler rated load in the oil combustion device 30% of calory burning.
In recent years, the coal in China state of supply worsened, and the power plant is forced to use ash content height, colm that calorific value is low, burning stable, reliability is relatively poor, and high load capacity fire extinguishing phenomenon often takes place.In order to stablize the stove internal combustion, often throw the combustion-supporting steady combustion of oil, therefore, need to consume a large amount of combustion-supporting oil.And the consumption of combustion-supporting oil is much larger than starting oil consumption.
According to statistics, nearly 15,000,000,000 yuans of the startup oil consumption in national thermal power plant every year and combustion-supporting oil consumption expense, and along with domestic product oil price continue raise up, this expense is also continuing to increase, and the production cost of electric power enterprise is constantly risen.
From the eighties in last century, the igniting, the steady burning burner that reduce oil consumption come out successively.The small oil gun start-up burner, coal adaptability is wide, but oil consumption is still higher.The plasma non-oil ignition technology is only applicable to brown coal, bituminous coal.Chinese patent: 200510049732.0, a kind of meager coal cold state ignition under tiny oil and steady burning burner in ultra low load are disclosed; Chinese patent: 200320129380.6 and 200320103151.7 disclose a kind of little oil burner respectively.It all can't be applied to anthracite, colm, meager coal.
During existing burner combustion, the adherent meeting of flame causes coking, has at present to adopt the air film cooling air to prevent coking, but need set up air film cooling air systems such as special high-pressure blower fan, not only the system architecture complexity has also caused scattering and disappearing of heat, and Btu utilization efficient is reduced.
Summary of the invention
The purpose of this utility model is to provide a kind of general purpose coal dust micro-oil igniting burner, and it has solved poor reliability in the background technology, and fuel consumption is big, cost height, the technical problem that the coal adaptive surface is narrow.
Technical solution of the present utility model is:
A kind of general purpose coal dust micro-oil igniting burner, comprise pulverized coal channel 1, one end of described pulverized coal channel 1 is a breeze airflow inlet 22, the other end is a flame jet 20, its special character is: the secondary firing tube 8 that described breeze airflow enters the mouth and is provided with in the pulverized coal channel 1 at 22 places, pulverized coal channel 1 inwall of described secondary firing tube 8 porch is provided with one-level inspissator 4, the inwall of described secondary firing tube 8 porch is provided with secondary inspissator 5, is provided with steady combustion cover 7 in the described secondary firing tube 8; The breeze airflow of described steady combustion cover 7 14 places that enter the mouth are provided with the flame holder 6 that is communicated with oil gun 3, and described steady combustion cover 7 is communicated with flame holder 6; Space in the described steady combustion cover 7 constitutes central combustion chamber 15, space in described secondary firing tube 8 outlets constitutes secondary combustion chamber 17, space in the flame jet 20 of described pulverized coal channel 1 constitutes igniting chamber 19, described central combustion chamber 15, secondary combustion chamber 17 and igniting chamber 19 axially setting gradually along pulverized coal channel 1.
Being advisable so that circumference bellows 12 to be set in the outside of above-mentioned pulverized coal channel 1, can be provided with on the described circumference bellows 12 to regulate wind inlet 13, and the adjusting wind outlet 21 of described circumference bellows 12 is positioned at flame jet 20 outsides of pulverized coal channel 1.
The exit of above-mentioned steady combustion cover 7 is to be provided with furnace arch, furnace nose 16 for good, and the exit of above-mentioned secondary firing tube 8 is also to be provided with furnace arch, furnace nose 9 for good.
Above-mentioned steady combustion cover 7 is advisable to adopt the squirrel-cage cover, and described steady combustion cover 7 can be connected by the fence frame with flame holder 6, also is connected by two or many connecting rods.
Above-mentioned pulverized coal channel 1 outside interior, secondary firing tube 8 can be provided with three grades of combustion barrels 10, and the space in described three grades of combustion barrels, 10 outlets constitutes three grades of combustion chambers 18, and described three grades of combustion chambers 18 are between secondary combustion chamber 17 and igniting chamber 19.
The exit of above-mentioned three grades of combustion barrels 10 is to be provided with furnace arch, furnace nose 11 for good.
The outside of above-mentioned oil gun 3 can be provided with oil gun sleeve pipe 2.
The utlity model has following advantage:
1. has coal adaptability widely.Both be applicable to brown coal, bituminous coal, also be applicable to the relatively poor coals of ature of coal such as anthracite, colm, meager coal.
2. versatility is good.Because circumference after-flame wind can be individual layer or bilayer, can be that direct current also can be an eddy flow.When circumference after-flame wind was eddy flow, burner was typical cyclone micro-oil igniting pulverized coal burner.Therefore, the utility model both had been applicable to straight-through pulverized coal burner, also was applicable to vortex burner, and was applied widely.
3. implementation cost is low.System architecture is simple, is particularly suitable for the transformation of existing equipment, and the retrofit work amount is little, easy to implement.Need not to regulate, need not to increase field apparatus.
4. adopt multistage blaze-folding corner structure, can prevent effectively that combustion flame is adherent and the coking that causes.Save air film cooling air systems such as special high-pressure blower fan of the prior art, simplified system architecture.
5. energy consumption is low, the reliability height.According to the principle of igniting step by step, with the micro oil fraction breeze airflow that ignites earlier, amplify step by step again, most of breeze airflow that ignites, coal dust in the burner hearth that finally ignites reaches with the ignite purpose of a large amount of breeze airflows of micro oil.
6. heat utilization ratio height, the rate of economizing gasoline height.Because the calory burning in the burner is all absorbed by breeze airflow, fuel consume is low, starts rate of economizing gasoline up to more than 95%.And under equal ature of coal condition, Oil Gun is littler, generally only is 15～50kg/h.
7. be beneficial to environmental protection.In the process of igniting step by step, the thick coal culm air-flow is in the combustion with meagre oxygen state all the time, and therefore, the NOx of generation reduces significantly, has reduced the pollution to atmosphere, helps environmental protection.
8. the stability of a system is good, and is safe and reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Drawing reference numeral explanation: 1-pulverized coal channel, 2-oil gun sleeve pipe, 3-oil gun, 4-one-level inspissator, 5-secondary inspissator, 6-flame holder, 7-surely fire cover, 8-secondary firing tube, the 9-furnace arch, furnace nose, three grades of combustion barrels of 10-, 11-furnace arch, furnace nose, 12-circumference bellows, 13-regulates the wind inlet, 14-breeze airflow inlet, 15-central combustion chamber, 16-furnace arch, furnace nose, 17-secondary combustion chamber, three grades of combustion chambers of 18-, 19-igniting chamber, 20-flame jet, 21-are regulated the wind outlet, 22-breeze airflow inlet.
The specific embodiment
Referring to Fig. 1, an end of the utility model pulverized coal channel 1 is a breeze airflow inlet 22, and the other end is a flame jet 20.Being advisable so that circumference bellows 12 to be set in the outside of pulverized coal channel 1, can be provided with on the circumference bellows 12 to regulate wind inlet 13, and the adjusting wind outlet 21 of circumference bellows 12 is positioned at flame jet 20 outsides of pulverized coal channel 1.The secondary firing tube 8 that breeze airflow enters the mouth and is provided with in the pulverized coal channel 1 at 22 places, pulverized coal channel 1 inwall of secondary firing tube 8 porch is provided with one-level inspissator 4, the inwall of secondary firing tube 8 porch is provided with secondary inspissator 5, is provided with steady combustion cover 7 in the secondary firing tube 8.The breeze airflow of steady combustion cover 7 14 places that enter the mouth are provided with the flame holder 6 that is communicated with oil gun 3, and steady combustion is covered 7 and is communicated with flame holder 6.Steady combustion cover 7 is advisable to adopt the squirrel-cage cover, and steady combustion cover 7 can be connected by the fence frame with flame holder 6, also is connected by two or many connecting rods.The exit of steady combustion cover 7 is to be provided with furnace arch, furnace nose 16 for good, and the exit of secondary firing tube 8 is also to be provided with furnace arch, furnace nose 9 for good.The outer setting of oil gun 3 has oil gun sleeve pipe 2.Space in the steady combustion cover 7 constitutes central combustion chamber 15, space in 8 outlets of secondary firing tube constitutes secondary combustion chamber 17, space in the flame jet 20 of pulverized coal channel 1 constitutes igniting chamber 19, central combustion chamber 15, secondary combustion chamber 17 and igniting chamber 19 axially setting gradually along pulverized coal channel 1.The space that pulverized coal channel 1 outside interior, secondary firing tube 8 can be provided with in 10 outlets of 10, three grades of combustion barrels of three grades of combustion barrels constitutes 18, three grades of combustion chambers 18, three grades of combustion chambers between secondary combustion chamber 17 and igniting chamber 19.The exit of three grades of combustion barrels 10 is to be provided with furnace arch, furnace nose 11 for good.
During work, the breeze airflow that enters from pulverized coal channel 1 inlet is through separated behind the one-level inspissator 4: a part of coal dust air-flow enters the circular passage between pulverized coal channel 1 and the secondary firing tube 8; Another part breeze airflow enters secondary firing tube 8.The breeze airflow that enters secondary firing tube 8 is separated behind secondary inspissator 5 once more in the porch of secondary firing tube 8: a part of coal dust enters mouse cage from the inlet 14 of steady combustion cover 7 and surely fires central combustion chamber 15 in the cover 7; Another part coal dust enters secondary combustion chamber 17 from the circular passage that squirrel-cage surely fires between cover 7 and the secondary firing tube 8.Enter the breeze airflow of circular passage between pulverized coal channel 1 and the secondary firing tube 8, separated in the porch of three grades of combustion barrels 10: a part of coal dust air-flow enters three grades of combustion chambers 18; Another part breeze airflow enters igniting chamber 19 from the circular passage between pulverized coal channel 1 and the three grades of combustion barrels 10.Breeze airflow is ignited rapidly by the thermal-flame that oil gun 3 ejects, and after flame holder 6 steady flames, the 7 steady combustions of steady combustion cover, is ignited in the central combustion chamber 15 that spaces in the steady combustion cover 7 constitute.The flame that is ejected by central combustion chamber 15 is injected into secondary combustion chamber 17, and the breeze airflow of secondary combustion chamber 17 is ignited.Flame is injected into three grades of combustion chambers 18, and after the breeze airflow of three grades of combustion chambers 18 was ignited, flame was injected into igniting chamber 19 again, and the formed flames of breeze airflow that ignited in the igniting chamber 19 are spurted into burner hearth through flame jet 20.The interior circumference after-flame wind of circumference bellows 12 is used for the aftercombustion air, can protect spout not burnt out when normal operation, can improve the jet rigidity of breeze airflow simultaneously.
Claims (7)
1. general purpose coal dust micro-oil igniting burner, comprise pulverized coal channel (1), one end of described pulverized coal channel (1) is a breeze airflow inlet (22), the other end is flame jet (20), it is characterized in that: the secondary firing tube (8) that is provided with in the pulverized coal channel (1) that described breeze airflow inlet (22) is located, pulverized coal channel (1) inwall of described secondary firing tube (8) porch is provided with one-level inspissator (4), the inwall of described secondary firing tube (8) porch is provided with secondary inspissator (5), is provided with steady combustion cover (7) in the described secondary firing tube (8); The breeze airflow inlet (14) of described steady combustion cover (7) locates to be provided with the flame holder (6) that is communicated with oil gun (3), and described steady combustion cover (7) is communicated with flame holder (6); Space in the described steady combustion cover (7) constitutes central combustion chamber (15), space in described secondary firing tube (8) outlet constitutes secondary combustion chamber (17), space in the flame jet (20) of described pulverized coal channel (1) constitutes igniting chamber (19), described central combustion chamber (15), secondary combustion chamber (17) and igniting chamber (19) axially setting gradually along pulverized coal channel (1).
2. general purpose coal dust micro-oil igniting burner according to claim 1, it is characterized in that: the outer setting of described pulverized coal channel (1) has circumference bellows (12), described circumference bellows (12) are provided with regulates wind inlet (13), and the adjusting wind outlet (21) of described circumference bellows (12) is positioned at flame jet (20) outside of pulverized coal channel (1).
3. general purpose coal dust micro-oil igniting burner according to claim 1 and 2 is characterized in that: the exit of described steady combustion cover (7) is provided with furnace arch, furnace nose (16), and the exit of described secondary firing tube (8) is provided with furnace arch, furnace nose (9).
4. general purpose coal dust micro-oil igniting burner according to claim 3, it is characterized in that: described steady combustion cover (7) is the squirrel-cage cover, described steady combustion cover (7) is connected by the fence frame with flame holder (6), or described steady combustion cover (7) and flame holder (6) are connected by two or many connecting rods.
5. general purpose coal dust micro-oil igniting burner according to claim 4, it is characterized in that: described pulverized coal channel (1) is interior, the outer setting of secondary firing tube (8) has three grades of combustion barrels (10), space in described three grades of combustion barrels (10) outlet constitutes three grades of combustion chambers (18), and described three grades of combustion chambers (18) are positioned between secondary combustion chamber (17) and the igniting chamber (19).
6. general purpose coal dust micro-oil igniting burner according to claim 5 is characterized in that: the exit of described three grades of combustion barrels (10) is provided with furnace arch, furnace nose (11).
7. general purpose coal dust micro-oil igniting burner according to claim 6 is characterized in that: the outer setting of described oil gun (3) has oil gun sleeve pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136245 CN200979156Y (en) | 2006-12-01 | 2006-12-01 | General coal dust micro-oil igniting burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136245 CN200979156Y (en) | 2006-12-01 | 2006-12-01 | General coal dust micro-oil igniting burner |
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| Publication Number | Publication Date |
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| CN200979156Y true CN200979156Y (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620136245 Expired - Lifetime CN200979156Y (en) | 2006-12-01 | 2006-12-01 | General coal dust micro-oil igniting burner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566345B (en) * | 2009-03-17 | 2010-09-08 | 王文庭 | Flame guider |
| CN101191614B (en) * | 2006-12-01 | 2010-10-06 | 郑平安 | General purpose coal dust micro-oil igniting method |
| CN103069217A (en) * | 2010-11-29 | 2013-04-24 | 三菱重工业株式会社 | Ignition torch and pressurized gasifier provided with same |
-
2006
- 2006-12-01 CN CN 200620136245 patent/CN200979156Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191614B (en) * | 2006-12-01 | 2010-10-06 | 郑平安 | General purpose coal dust micro-oil igniting method |
| CN101566345B (en) * | 2009-03-17 | 2010-09-08 | 王文庭 | Flame guider |
| CN103069217A (en) * | 2010-11-29 | 2013-04-24 | 三菱重工业株式会社 | Ignition torch and pressurized gasifier provided with same |
| CN103069217B (en) * | 2010-11-29 | 2015-11-25 | 三菱日立电力***株式会社 | Ignition tip and possess the compression type gasification furnace of this ignition tip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an Puhua Combustion Engineering Co., Ltd. Assignor: Zheng Pingan Contract fulfillment period: 2009.12.7 to 2015.12.6 Contract record no.: 2009610000147 Denomination of utility model: General coal dust micro-oil igniting burner Granted publication date: 20071121 License type: Exclusive license Record date: 20091209 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.12.7 TO 2015.12.6; CHANGE OF CONTRACT Name of requester: XI'AN PUHUA BURNING ENGINEERING CO., LTD. Effective date: 20091209 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071121 |
|
| EXPY | Termination of patent right or utility model |