CN201772451U - Coal dust burner with whirlwind auxiliary oil - Google Patents
Coal dust burner with whirlwind auxiliary oil Download PDFInfo
- Publication number
- CN201772451U CN201772451U CN2010205302081U CN201020530208U CN201772451U CN 201772451 U CN201772451 U CN 201772451U CN 2010205302081 U CN2010205302081 U CN 2010205302081U CN 201020530208 U CN201020530208 U CN 201020530208U CN 201772451 U CN201772451 U CN 201772451U
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- Prior art keywords
- racemization
- whirlwind
- conduit
- oil
- duct
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Abstract
The utility model discloses a coal dust burner with whirlwind auxiliary oil comprising a whirlwind duct with capability of whirlwind separating function, the inlet of the whirlwind duct being a tangential entrance, the front part being a cylinder section, the rear part being a cone contraction structure, the outlet being the main nozzle of the burner in a round or rectangle structure, part of an exhaust gas pipeline inserting to the cylinder section from the top of the whirlwind duct, the other end of the exhaust gas pipeline being connected to an exhaust gas nozzle, the exhaust gas pipeline on top of the whirlwind duct being provided with an installation conduit, the installation conduit being provided with a racemization conduit therein which can extends to the main nozzle, the racemization conduit being provided with a telescopic oil gun therein, the racemization conduit below the cone section of the whirlwind duct being externally disposed with a racemization blade. The whirlwind duct is employed for condensation of the coal dust and air flow, while the racemization conduit and the racemization blade are capable of moving up and down according to working condition. High-temperature oil flame generated by oil gun will give heating directly to dense phase coal dust of the main nozzle, and the mutual wraping and absorption of the high-temperature smoke will form stable heat source, which thereby achieves purpose of low-load stable burning of boiler with less oil. The fuel economy rate of the utility mode can be more than 70%, thus finding especial application to W-shape flame boiler.
Description
Technical field
The utility model relates to a kind of coal burner, relates in particular to a kind of burner that uses the boiler (" the W type flame " boiler that promptly is commonly called as) of two arch burner arrangement of anthracite or meager coal, belongs to combustion technology and equipment technical field.
Background technology
The electric structure of China is the thermal power generation that acts as a fuel based on coal.Have an appointment in the coal structure that wherein acts as a fuel 15% anthracite and 8% meager coal because its ature of coal is relatively poor, often adopt W type flame boiler (hereinafter to be referred as the W stove) to burn.Since its catch fire and ratio of combustion oil, gas much more difficult, generally under boiler startup and underrun condition adopt a large amount of fuel oils or combustion gas to light a fire and steady combustion.The burner of existing W type flame boiler is common bispin air duct separate type burner, band whirlwind molecular separator shade type direct current cross-tube burner etc., no matter be to adopt which kind of burner, boiler all is provided with independently powerful grease gun igniting and steady combustion near close burner nozzle.Especially work as boiler operatiopn under the situation of underload, need to consume a large amount of fuel oils and surely fire.
Adopt the W stove of bispin air duct separate type coal burner to use more at home.Because the needs of igniting and steady combustion, the design heating load different according to boiler, often inserting one near the coal burner main injection jet, to exert oneself be the big oil gun of 500～1600kg/h.The flame impingement of big oil gun is to coal dust, and to the coal dust heating and light, therefore the torch volume of needs is bigger.In addition, also there are following some shortcomings in this burner: the weary band of gas has certain eddy flow, towards the degree of depth adverse effect is arranged down to reaching certain; Weary gas causes coal dust to separate in the elbow, to such an extent as at weary gas blowout mouth coal dust skewness through one or two elbow; According to long-term operating position, the prismatic blade racemization effect of this burner can't reach complete racemization.
Adopt the W stove of band whirlwind molecular separator shade type direct current cross-tube burner, be furnished with the big oil gun of exerting oneself more greatly equally near main injection jet, igniting and steady fuel oil consumption are bigger.Owing to adopted the spout of clearance type, eliminated to a certain extent because the eddy flow that whirlwind is brought influences, but caused the wearing and tearing of spout bigger, and safeguarded, changed inconvenient.
The utility model content
The purpose of this utility model provides a kind of auxilliary oil coal powder burner of whirlwind of the W of being used for type flame boiler, solve the problem of the effectively steady combustion of existing coal burner, reduce the required fuel consumption of W type flame boiler low-load combustion-stabilizing that uses anthracite or meager coal, eliminate weary cyclonic current, lack the adverse effect that gas blowout mouth coal dust skewness brings, further improve main injection jet racemization effect and abrasion condition.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of whirlwind is assisted oil coal powder burner, comprise whirlwind tube with cyclonic separation effect, the inlet of described whirlwind tube is for tangentially entering, the front portion is a cylindrical section, the rear portion is awl section contraction structure, outlet is circle or rectangular configuration for the burner main injection jet.The blast pipe road inserts cylindrical section from whirlwind tube top section, and another termination in described blast pipe road lacks the gas blowout mouth.On blast pipe road, whirlwind tube top, the installation conduit is set, the built-in racemization conduit that extends main injection jet of described installation conduit, the built-in telescopic oil gun of described racemization conduit.
In order to reach better main injection jet coal dust wind racemization effect, described racemization conduit is at the racemization blade of the external band certain angle in whirlwind cone section downstream, and the angle of racemization blade is opposite with the direction of rotation of air-flow in the whirlwind tube.
Easy to adjust for racemization blade location, described racemization conduit is controlled its scalable moving by a long-range executing agency.Racemization conduit, racemization blade all can be flexible up and down along axis, can better control flame profile, increase the adaptability of burner to ature of coal.
Easy to adjust for little oil gun location, described oil gun is controlled its scalable moving by a long-range executing agency, when needs are thrown the steady combustion of oil oil gun is extend near the burner main injection jet.
Stop up racemization guide rod and oil gun carbonization at high temperature obstruction for fear of coal dust, between described racemization conduit and insertion oil gun, be provided with the purging cooling air.
Change the adverse effect of bringing, the built-in second racemization blade in order to alleviate weary cyclone in described blast pipe road.
For fear of the coal dust skewness of weary gas through causing behind the elbow, the eccentric effect of coal dust because of inertia offset through twice or above curvature of space pipeline in the blast pipe road.
Good effect of the present utility model: owing to adopt oil gun directly to heat coal dust, adjustable coal dust racemization, adopt technical measures such as space elbow, racemization blade at blast pipe, have following characteristics at the main injection jet place:
1) when boiler is in underrun, by form the burning hot source of stable high intensity points at the main injection jet place, strengthen coal dust firing with micro-fuel oil, realized using under the underload situation the steady combustion purpose of anthracite and meager coal, rate of economizing gasoline reaches more than 70%;
2) can by regulating the position of racemization conduit and racemization blade, improve flame profile according to the variation of ruuning situation such as wind speed, ature of coal, strengthen the flame stabilization ability;
3) by with the whirlwind tube in the opposite racemization blade of air-flow direction of rotation angle, can offset the eddy flow that produces because of the whirlwind tube, farthest eliminate its influence;
4), can reduce or eliminate the eddy flow of weary gas, the rigidity of the weary gas of increase and following towards stroke by the second racemization blade of setting in the blast pipe;
5), offset the coal dust skewness of weary gas through producing behind the elbow by plural space elbow;
6) the utility model is particularly useful for W type flame boiler, does not influence the weary gas separating effect and the combustibility of the former burner of boiler when boiler normally moves, and keeps the spout flame profile and the depth of penetration, does not increase fly ash combustible material, does not cause NOx to raise.This burner reliability height, stable performance, simple in structure, be special at the W type flame boiler burner design that uses anthracite and meager coal, for using the power plant of W type flame boiler, save fuel oil, remarkable benefit.
Below with reference to drawings and Examples, the utility model is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the auxilliary oil coal powder burner organigram of embodiment 1 whirlwind.
Fig. 2 is embodiment 2 racemization blade schematic diagrames.
Fig. 3 is embodiment 5 organigrams.
Fig. 4 is embodiment 6 organigrams.
Fig. 5 is the vertical view of Fig. 4.
Among the figure: 1. inlet, 2. whirlwind tube cylindrical section, 3. the whirlwind cone section, 4. main injection jet, 5. the racemization blade, 6. the racemization guide rod, 7. blast pipe, 8. weary gas elbow, 9. install conduit, 10. cooling air inlet, 11. supports, 12. executing agencies, 13. oil guns, 14. weary gas air doors, 15. weary gas racemization blades, 16. weary gas blowout mouths, 17. main injection jets circumference joint, 18. weary cyclostrophics are to elbow, 19. blast pipes circumference joint.
The specific embodiment
The course of work of the present utility model, when boiler is in the operation of normal duty state, primary wind and powder enters burner through inlet 1, after whirlwind tube cylindrical section 2 and whirlwind cone section 3 are carried out cyclonic separation, a part contains the less weary gas of coal dust and enters blast pipe 7, when elbow 18, coal dust can turn under action of inertia near main injection jet one side then more earlier to away from main injection jet one lateral enrichment through weary cyclostrophic.By the racemization of weary gas racemization blade 15, the coal dust that makes weary gas blowout mouth 16 come out is evenly distributed again, and easier torch by main injection jet is lighted.Through the rich powder air-flow after the cyclonic separation, flow through and be with the racemization blade 5 of certain angle, opposite to the water conservancy diversion direction of air-flow on tangential direction with air-flow tangential velocity in the whirlwind tube, eliminated the swirl strength of air-flow greatly, after main injection jet 4 sprays into burner hearth, can obtain better jet rigidity and longer following again towards stroke.Weary gas air door 14 can be regulated weary throughput and cyclonic separation cocnentration factor.
Be in underrun at boiler, when needing steady the combustion, startup executing agency 12 extend into oil gun 13 near the main injection jet 4, restarts oil gun.A spot of fuel oil is lighted the high-intensity high temperature oil flame (central temperature is up to 1500～2000 ℃) of generation through atomizing by the furnace high-temperature flue gas near a wind main injection jet.At this moment, the rich powder air-flow from main injection jet 4 penetrates is ignited by high temperature oil flame near main injection jet 4.Pulverized coal flame and oily flame entrainment mutually, form stable igniting thermal source.When boiler working condition recovers just often to close oil gun 13, and start executing agency 12 oil gun 13 is return certain distance, prevent that oil gun from being burnt by the furnace high-temperature flue gas.The oil gun cooling air enters the racemization guide rod through cooling air inlet 10, during boiler operatiopn oil gun is provided cooling and purges protection.
Claims (6)
1. the auxilliary oil coal powder burner of whirlwind comprises the whirlwind tube with cyclonic separation effect, and the inlet of described whirlwind tube is for tangentially entering, and the front portion is a cylindrical section, and the rear portion is awl section contraction structure, exports to be the burner main injection jet, is circle or rectangular configuration; The blast pipe road inserts cylindrical section from whirlwind tube top section, and another termination in described blast pipe road lacks the gas blowout mouth; It is characterized in that: on blast pipe road, whirlwind tube top, the installation conduit is set, the built-in racemization conduit that extends main injection jet of described installation conduit, the built-in telescopic oil gun of described racemization conduit; Described racemization conduit is at the racemization blade of the external band certain angle in whirlwind cone section downstream, and the angle of racemization blade is opposite with the direction of rotation of air-flow in the whirlwind tube.
2. coal burner according to claim 1 is characterized in that: described racemization conduit connects the long-range executing agency of its telescopic moving of control.
3. coal burner according to claim 1 and 2 is characterized in that: be provided with cooling air between described racemization conduit and insertion oil gun.
4. coal burner according to claim 3 is characterized in that: described oil gun connects the long-range executing agency of its telescopic moving of control.
5. coal burner according to claim 1 and 2 is characterized in that: the built-in second racemization blade in described blast pipe road.
6. coal burner according to claim 5 is characterized in that: described blast pipe road is to have above curvature of space pipeline at least twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205302081U CN201772451U (en) | 2010-09-14 | 2010-09-14 | Coal dust burner with whirlwind auxiliary oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205302081U CN201772451U (en) | 2010-09-14 | 2010-09-14 | Coal dust burner with whirlwind auxiliary oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772451U true CN201772451U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205302081U Expired - Lifetime CN201772451U (en) | 2010-09-14 | 2010-09-14 | Coal dust burner with whirlwind auxiliary oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772451U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353112A (en) * | 2012-10-10 | 2013-10-16 | 北京巴布科克·威尔科克斯有限公司 | Concentrated pulverized coal turbulent burner with bluff body stable burning device |
| CN103912895A (en) * | 2014-04-16 | 2014-07-09 | 华舜天和（北京）节能环保技术有限公司 | Oxygen-enriched ignition device with cyclone barrel for flame boiler |
| CN106545885A (en) * | 2016-11-25 | 2017-03-29 | 武汉斯奇环保科技有限公司 | W type boiler fuel-economizing wind proof bispin nozzles igniters |
| CN111023083A (en) * | 2019-12-19 | 2020-04-17 | 哈尔滨工业大学 | W flame boiler adopting cyclone burner |
| CN114408585A (en) * | 2022-01-24 | 2022-04-29 | 润电能源科学技术有限公司 | Gas-solid uniform distribution device for conveying pipeline |
-
2010
- 2010-09-14 CN CN2010205302081U patent/CN201772451U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353112A (en) * | 2012-10-10 | 2013-10-16 | 北京巴布科克·威尔科克斯有限公司 | Concentrated pulverized coal turbulent burner with bluff body stable burning device |
| CN103912895A (en) * | 2014-04-16 | 2014-07-09 | 华舜天和（北京）节能环保技术有限公司 | Oxygen-enriched ignition device with cyclone barrel for flame boiler |
| CN106545885A (en) * | 2016-11-25 | 2017-03-29 | 武汉斯奇环保科技有限公司 | W type boiler fuel-economizing wind proof bispin nozzles igniters |
| CN111023083A (en) * | 2019-12-19 | 2020-04-17 | 哈尔滨工业大学 | W flame boiler adopting cyclone burner |
| CN114408585A (en) * | 2022-01-24 | 2022-04-29 | 润电能源科学技术有限公司 | Gas-solid uniform distribution device for conveying pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
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| CX01 | Expiry of patent term |