CN201170549Y - Horizontal concentrating type micro oil gasification firing powered coal burner - Google Patents
Horizontal concentrating type micro oil gasification firing powered coal burner Download PDFInfo
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- CN201170549Y CN201170549Y CNU2008200053263U CN200820005326U CN201170549Y CN 201170549 Y CN201170549 Y CN 201170549Y CN U2008200053263 U CNU2008200053263 U CN U2008200053263U CN 200820005326 U CN200820005326 U CN 200820005326U CN 201170549 Y CN201170549 Y CN 201170549Y
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- jet pipe
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Abstract
The utility model discloses a horizontal-concentration micro-oil gasification ignition coal-dust combustor, and comprises a coal-dust primary air-blasting pipe, a small oil gun installation pipe seat, a small oil gun and an oil combustion chamber, wherein, the coal-dust primary air-blasting pipe is arranged horizontally; the cross section of the coal-dust primary air-blasting pipe is rectangular; the small oil gun and the oil combustion chamber are arranged at the outer side of the coal-dust primary air-blasting pipe; a concentrator and a separation device are arranged inside the coal-dust primary air-blasting pipe; the space, which is provided with the concentrated-phase side of the coal-dust air stream, is provided with a primary combustion chamber; a secondary combustion chamber is arranged after the primary combustion chamber in the airflow direction; the oil combustion chamber is arranged at one side of the concentrated coal-dust air stream passage; the coal-dust primary air-blasting pipe, which is provided with the primary combustion chamber, is sleeved with a cooling air chamber; the cooling air chamber is provided with a cooling periphery air-blasting pipe that extends to the outlet of the coal-dust primary air-blasting pipe. The coal-dust concentration way is consistent with the boiler, thereby favoring the ignition, combustion stabilizing and the reduction of the NOx generation; the horizontal-concentration micro-oil gasification ignition coal-dust combustor has small flow resistant force, simple structure and easy manufacturing, and has high oil-saving rate, and can ignite the lean coal and other coal with low volatilization, and has good environmental-protection performance.
Description
Technical field
The utility model relates to the pulverized coal boiler ignition technology, discloses a kind of horizontal concentration-type coal dust direct-fire burner.
Background technology
Energy savings reduces blowdown, is the world subject in the modern social development.The economizing on coal of large-sized boiler, fuel-saving technique are particularly important, because fuel oil is in short supply day by day, expensive, save and alternative fuel oil is to solve the China's oil shortage of resources, alleviate contradiction between oil supply and demand, the great strategic measure of guarantee economic security of the country.In order to save fuel oil, domestic plasma non-oil ignition technology, the few oil of small oil gun directly firing coal-dust technology, the little oil gas firing coal-dust technology successfully developed in the last few years.
Plasma non-oil ignition technology is applicable to high-volatile bituminous coal, brown coal, but there is system complex in it, and investment is big, shortcomings such as the ignition parts easily pollute, scaling loss, and also be not suitable for low-volatile coals such as meager coal, anthracite at present.
Domestic, small oil gun few-oil ignition technology has obtained using comparatively widely on boiler, and equipment investment is few, and the reliability height is practical.Little oil gas firing coal-dust technology is the development of small oil gun firing technique, and the ignition temperature of gasified fuel is higher, has improved the pyrolysis to coal dust during igniting, and is more fuel-efficient during firing coal-dust.But present disclosed tiny-oil ignition technology mostly is radially concentration-type coal dust start-up burner, and a general mood stream is through behind the inspissator, and the central gas stream that forms in the burner is a concentrated phase, and circumferentially air-flow is light phase.The dense phase pulverized coal air-flow at burner center at first flows through fuel ignition one-level combustion chamber, is convenient to ignition.As patent ZL03212538.0, ZL200420115242.7 and ZL200520101974.5, the one-level combustion chamber of breeze airflow all is located at once the position of center line in distinguished and admirable road.These little oil burners that gasify have adaptability preferably to bituminous coal at present, and burning meager coal, anthracite are not still had substantial technological break-through.
Above prior art has several comparatively significant disadvantages:
(1) pulverized-coal fired boiler of corner tangential firing, particularly use the pulverized-coal fired boiler of meager coal, anthracitic corner tangential firing, generally adopt horizontal concentration technique at present, make a general mood flow dense side direction fire, light side back of the body fire, be beneficial to catch fire and the steady generation of firing and reducing NOx.Radially the coal dust start-up burner of Nong Suoing is inconsistent, inharmonious with the original horizontal concentration technique of boiler, and particularly influence reduces the generation of NOx.
(2) will light dense phase pulverized coal air-flow on the burner center line, must make oily flame enter the primary zone of burner center, the small oil gun sleeve pipe must be connected with the primary zone.So, must reduce the once cross section in distinguished and admirable road, increase the resistance of burner.After igniting finishes, burner is taken as the main burner operation, and this resistance and the influence that has increased exists all the time.
(3) because the existence that resistance increases must cause the wearing and tearing of the interface channel of coal dust one-level combustion chamber and oil combustion chamber, reduce the service life of parts.
The utility model content
Problem at the prior art existence, the purpose of this utility model provides a kind of level and concentrates the oil gas igniting pulverized coal burner that declines, the horizontal concentration technique that it can make the pulverized-coal fired boiler of the Pulverized Coal Concentration mode of start-up burner and corner tangential firing adopt is consistent, and the small oil gun sleeve pipe can not increase the resistance of a wind again, and the interface channel of coal dust one-level combustion chamber and oil combustion chamber also is difficult for being worn.
For achieving the above object, a kind of level of the utility model concentrates the oil gas igniting pulverized coal burner that declines, comprise inner wind jet pipe of coal dust that forms the breeze airflow passage, the small oil gun that is communicated with wind jet pipe of coal dust is installed base, be installed in the small oil gun in the small oil gun installation base, and oil combustion chamber, a wind jet pipe of described coal dust horizontal positioned, the cross section is a rectangle, described small oil gun and oil combustion chamber are positioned at the outside of a wind jet pipe of described coal dust, a wind jet pipe of described coal dust inside is provided with the inspissator that makes breeze airflow left and right sides concentrating and separating and is divided into concentrated phase and light spacer assembly mutually about breeze airflow with making, the space, concentrated phase side place of described breeze airflow is the one-level combustion chamber, described one-level combustion chamber is a secondary combustion chamber along airflow direction backward, described oil combustion chamber is arranged on a side of thick coal culm gas channel, wind jet pipe outside of the coal dust at place, described one-level combustion chamber is with the cooling air compartment, and the cooling air compartment is connected with the cooling surrounding air jet pipe that extands rearward to a wind outside nozzle of coal dust along airflow direction.
Further, described small oil gun is installed the side that base is arranged on the thick coal culm gas channel, and described small oil gun is installed the axis of base and the axis of a wind jet pipe of coal dust forms an angle, and the oil spout direction is placed along airflow direction.
Further, described inspissator is the two-stage blade construction, be arranged on the entrance of a wind jet pipe of burner, the angle of blade and nozzle axis is 20 °-50 °, breeze airflow is concentrated to thick coal culm gas channel place, and point to breeze airflow one-level combustion chamber, and the angle of described small oil gun center line and coal burner axis is 40 °-75 °, the oil spout direction of oil gun is placed along airflow direction.
Further, described spacer assembly is to be positioned at the dividing plate that a wind jet pipe of described coal dust inside vertically is provided with vertically, described dividing plate is fixed on up and down between the side of a wind jet pipe of coal dust, relative with oil combustion chamber, two passages about described dividing plate is divided into wind jet pipe of coal dust, one side near oil combustion chamber is the thick coal culm gas channel, and another side is the thin powdered coal gas channel.
Further, wind jet pipe of described coal dust also is provided with at least one steady combustion mound platform, and described steady combustion mound platform is a profile of tooth, is fixed near on the inwall at described burner nozzle place.
Further, also be provided with the photoelectricity fire inspection sleeve pipe and the image fire inspection sleeve pipe that are connected with oil combustion chamber on the sidewall of a wind jet pipe of described coal dust, be used for fixing photoelectricity flame detecting probe and image flame detecting probe.
Further, the cross section of described cooling surrounding air jet pipe is a rectangle.
Pulverized Coal Concentration mode and the pulverized-coal fired boiler of the corner tangential firing horizontal concentration technique that adopt of the utility model by making start-up burner is consistent, helps ignition smooth combustion and reduces the generation of NOx.Adopt reliable micro-gasification of fuel oil technology, use the 20-100kg/h fuel oil, light step by step, can light a large amount of coal dust 2-10t/h.Simultaneously, little oil gas combustion chamber and oily passage of flame are arranged on outside general mood of concentrated phase stream side, the wind passage, can not increase the resistance of a wind, are beneficial to lighting of breeze airflow more; And the interface channel of coal dust one-level combustion chamber and oil combustion chamber also is difficult for being worn.This technology not only adapts to and uses bituminous coal, can also adapt to use meager coal, anthracite.Low-volatile coals such as meager coal are lighted in realization, and rate of economizing gasoline can reach more than 90%.Because of the amount of fuel pettiness, igniting can make electric cleaner put into operation, is beneficial to environmental protection; Rational in infrastructure, dependable performance.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the utility model structural representation;
Fig. 2 is that A is to view.
The specific embodiment
Embodiment 1:
As Fig. 1, shown in Figure 2, the level that present embodiment proposes concentrates the horizontal concentration technique of oil gas igniting pulverized coal burner employing that declines, inspissator is the two-stage blade construction, comprise pulverized coal concentrator one grade blade 10 and pulverized coal concentrator two grade blades 11, be arranged on the entrance of a wind jet pipe 13 of coal dust, the angle of wind jet pipe 13 axis of two grade blades and coal dust is 20 °-50 °, making the warm oneself in front of a fire side of a general mood stream in burner hearth is concentrated phase, small oil gun mount pad pipe 3 and oil combustion chamber 6 are located at the outside of dense phase pulverized coal air-flow, small oil gun mount pad pipe 3 and oil combustion chamber 6 central lines, with the angle of the axis of a wind jet pipe 13 of coal dust be 40 °-75 °, breeze airflow one-level combustion chamber 7 is in the concentrated phase side of dividing plate 12, and dividing plate 12 is positioned at the center of a wind jet pipe 13 of coal dust; Breeze airflow secondary combustion chamber 9 is in the whole flow channel space of the terminal back of dividing plate 12; Be provided with the steady combustion mound platform 15 of the dentation that is symmetrically arranged in the outlet section both sides of breeze airflow secondary combustion chamber 9, with overheavy firing and steady combustion, and the flow velocity of raising burner nozzle 16 air-flows.In order not make the wallboard high temperature scaling loss of oil combustion chamber 6, breeze airflow one-level combustion chamber 7, breeze airflow secondary combustion chamber 9 and burner nozzle 16, need cool off it, so be provided with cooling air compartment 8 and cooling surrounding air jet pipe 14 in the outside of a wind jet pipe 13 of coal dust, form the cooling surrounding air; Cooling air compartment 8 is positioned at the outside of oil combustion chamber 6, breeze airflow one-level combustion chamber 7, and cooling air compartment 8 connects cooling surrounding air jet pipe 14 backward, and cooling surrounding air jet pipe 14 extands rearward to wind outside nozzle of coal dust always; Cooling air compartment import 2 is selected in the place ahead of oil combustion chamber 6; Can adjust cooling air quantity, the burner wall plate temperature is maintained below 500 ℃.
Be provided with the Pulverized Coal Concentration device in wind jet pipe 13 inducers of coal dust, be specially pulverized coal concentrator one grade blade 10 and 11 liang of grade blades of pulverized coal concentrator two grade blades, the jet pipe import is connected with a wind powder feeding pipes (not shown).After a wind breeze airflow enters wind jet pipe 13 of coal dust, at first through the concentrating and separating of two grade blades, make the concentrated phase air flow stream cross that two grade blades are right, a side of dividing plate 12, light phase air flow stream is crossed opposite side two grade blade places, dividing plate 12.In order to be beneficial to the igniting of breeze airflow, the small oil gun (not shown) is installed in the small oil gun of dense phase pulverized coal air-flow side and installs on the base 3; Gasify oily flame through the oil combustion chamber 6 outside wind jet pipe of coal dust 13, enter breeze airflow one-level combustion chamber 7, light the dense phase pulverized coal air-flow; When the dense phase pulverized coal air-flow that burns enters breeze airflow secondary combustion chamber 9, then light the light phase breeze airflow that flows into simultaneously; After breeze airflow secondary combustion chamber 9, dense, light phase breeze airflow all burns, through steady combustion mound platform 15 burning is further strengthened, and through burner nozzle 16, enters the boiler furnace (not shown) and burns away.Cooling air enters cooling air compartment 8 through cooling air compartment import 2, forms near even pressure condition, enters cooling surrounding air jet pipe 14 then, sprays into the boiler furnace (not shown) as circumference secondary wind.Image flame detecting probe (not shown) is installed on the image fire inspection sleeve pipe 5, photoelectricity flame detecting probe (not shown) is installed on the photoelectricity fire inspection sleeve pipe 4, make the monitoring of burner can enter DCS (the DISTRIBUTED CONTROL SYSTEM of whole boiler unit, collective and distributive type control system) system has higher automatic control level.After igniting was finished, when burner moved as main burner, small oil gun (not shown) place side was the thick coal culm air-flow, opposite side is the thin powdered coal air-flow relatively, can be consistent with the horizontal bias situation of other main burners, coordinate mutually, can not bring adverse effect.
Version of the present utility model greatly reduces the resistance of burner, has reduced easily worn part, has improved whole service life.
Referring to Fig. 1, Fig. 2, during igniting, at first light the small oil gun (not shown) and in time reach the gasification, and combustion state, produce 1700 ℃ of high temperature torches more than-2000 ℃ at oil combustion chamber 6, the high temperature torch enters breeze airflow one-level combustion chamber 7, light the dense phase pulverized coal air-flow, dense phase pulverized coal air-flow after the burning, enter breeze airflow secondary combustion chamber 9, light light phase breeze airflow and common burning, spray into the boiler furnace (not shown) through steady combustion mound platform 15, burner nozzle 16, burn away, heating, lifting fire box temperature.
Overall merit of the present utility model is: (1) adopts horizontal concentration-type, can make start-up burner Pulverized Coal Concentration mode and the horizontal concentration technique that adopts of the pulverized-coal fired boiler of corner tangential firing, integral body Upper consistent, be conducive to ignition smooth combustion and reduce the generation of NOx. (2) little oil gasification combustion chamber and The oil passage of flame is arranged on outside general mood of concentrated phase stream side, the wind passage. Flow resistance is little, Simple in structure, be convenient to make. (3) rate of economizing gasoline height is used the 20-100kg/h fuel oil, lights step by step, Can light a large amount of coal dust 2-10t/h; The low-volatile coals such as meager coal are lighted in realization, and rate of economizing gasoline can reach More than 90%. (4) good environmental protection, because of the amount of fuel pettiness, igniting can make electric cleaner drop into fortune OK, be beneficial to environmental protection. (5) monitoring of burner can enter the DCS system of whole boiler unit, Can have higher automatic control level.
Claims (7)
1. a level concentrates the oil gas igniting pulverized coal burner that declines, comprise inner wind jet pipe of coal dust that forms the breeze airflow passage, the small oil gun that is communicated with wind jet pipe of coal dust is installed base, be installed in the small oil gun in the small oil gun installation base, and oil combustion chamber, it is characterized in that, a wind jet pipe of described coal dust horizontal positioned, the cross section is a rectangle, described small oil gun and oil combustion chamber are positioned at the outside of a wind jet pipe of described coal dust, a wind jet pipe of described coal dust inside is provided with the inspissator that makes breeze airflow left and right sides concentrating and separating and is divided into concentrated phase and light spacer assembly mutually about breeze airflow with making, the space, concentrated phase side place of described breeze airflow is the one-level combustion chamber, described one-level combustion chamber is a secondary combustion chamber along airflow direction backward, described oil combustion chamber is arranged on a side of thick coal culm gas channel, wind jet pipe outside of the coal dust at place, described one-level combustion chamber is with the cooling air compartment, and the cooling air compartment is connected with the cooling surrounding air jet pipe that extands rearward to a wind outside nozzle of coal dust along airflow direction.
2. level according to claim 1 concentrates the oil gas igniting pulverized coal burner that declines, it is characterized in that, described small oil gun is installed the side that base is arranged on the thick coal culm gas channel, described small oil gun is installed the axis of base and the axis of a wind jet pipe of coal dust forms an angle, and the oil spout direction is placed along airflow direction.
3. level according to claim 1 concentrates the oil gas igniting pulverized coal burner that declines, it is characterized in that, described inspissator is the two-stage blade construction, be arranged on the entrance of a wind jet pipe of burner, the angle of blade and nozzle axis is 20 °-50 °, and breeze airflow is concentrated to thick coal culm gas channel place, and points to breeze airflow one-level combustion chamber, the angle of described small oil gun center line and coal burner axis is 40 °-75 °, and the oil spout direction of oil gun is placed along airflow direction.
4. level according to claim 1 concentrates the oil gas igniting pulverized coal burner that declines, it is characterized in that, described spacer assembly is to be positioned at the dividing plate that a wind jet pipe of described coal dust inside vertically is provided with vertically, described dividing plate is fixed on up and down between the side of a wind jet pipe of coal dust, relative with oil combustion chamber, two passages about described dividing plate is divided into wind jet pipe of coal dust, one side close oil combustion chamber is the thick coal culm gas channel, another side is the thin powdered coal gas channel.
5. level according to claim 1 concentrates the oil gas igniting pulverized coal burner that declines, it is characterized in that, wind jet pipe of described coal dust also is provided with at least one steady combustion mound platform, and described steady combustion mound platform is a profile of tooth, is fixed near on the inwall at described burner nozzle place.
6. level according to claim 1 concentrates the oil gas igniting pulverized coal burner that declines, it is characterized in that, also be provided with the photoelectricity fire inspection sleeve pipe and the image fire inspection sleeve pipe that are connected with oil combustion chamber on the sidewall of a wind jet pipe of described coal dust, be used for fixing photoelectricity flame detecting probe and image flame detecting probe.
7. level according to claim 1 concentrates the oil gas igniting pulverized coal burner that declines, and it is characterized in that the cross section of described cooling surrounding air jet pipe is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200053263U CN201170549Y (en) | 2008-03-11 | 2008-03-11 | Horizontal concentrating type micro oil gasification firing powered coal burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200053263U CN201170549Y (en) | 2008-03-11 | 2008-03-11 | Horizontal concentrating type micro oil gasification firing powered coal burner |
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| CN201170549Y true CN201170549Y (en) | 2008-12-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672474B (en) * | 2009-06-09 | 2012-01-25 | 徐州燃控科技股份有限公司 | Horizontal bias internal-combustion igniter and main pulverized coal burner |
| CN101603683B (en) * | 2009-07-03 | 2012-05-09 | 范昌 | Inferior coal micro-oil ignition combustor |
| CN102954464A (en) * | 2011-08-18 | 2013-03-06 | 徐军 | External-combustion tiny-oil stable-combustion energy-saving combustion device |
| CN107575859A (en) * | 2017-09-27 | 2018-01-12 | 西安热工研究院有限公司 | The oxygenation start-up burner and its ignition smooth combustion method of a kind of coal burning boiler of power station |
| CN110529852A (en) * | 2019-09-23 | 2019-12-03 | 中国科学技术大学 | A kind of micro-oil ignition combustion device |
-
2008
- 2008-03-11 CN CNU2008200053263U patent/CN201170549Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672474B (en) * | 2009-06-09 | 2012-01-25 | 徐州燃控科技股份有限公司 | Horizontal bias internal-combustion igniter and main pulverized coal burner |
| CN101603683B (en) * | 2009-07-03 | 2012-05-09 | 范昌 | Inferior coal micro-oil ignition combustor |
| CN102954464A (en) * | 2011-08-18 | 2013-03-06 | 徐军 | External-combustion tiny-oil stable-combustion energy-saving combustion device |
| CN102954464B (en) * | 2011-08-18 | 2015-06-17 | 徐军 | External-combustion tiny-oil stable-combustion energy-saving combustion device |
| CN107575859A (en) * | 2017-09-27 | 2018-01-12 | 西安热工研究院有限公司 | The oxygenation start-up burner and its ignition smooth combustion method of a kind of coal burning boiler of power station |
| CN110529852A (en) * | 2019-09-23 | 2019-12-03 | 中国科学技术大学 | A kind of micro-oil ignition combustion device |
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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: BEIJING SHI XINWEIYE COMBUSTION EQUIPMENT SCIENCE Free format text: FORMER OWNER: FAN CHANG Effective date: 20091113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091113 Address after: Room 1, office building 30, 022 North wa Road, Beijing, Haidian District, 100089 Patentee after: Beijing Shixin Albert combustion equipment Technology Co. Ltd. Address before: Nangang District of Heilongjiang city in Harbin province Dacheng Street No. 14 block 2104 A Longdian garden, zip code: 150001 Co-patentee before: Yang Xianmin Patentee before: Fan Chang |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Shixin Albert combustion equipment Technology Co. Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20160311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |