CN203413625U - Low-temperature diesel preheating burner - Google Patents
Low-temperature diesel preheating burner Download PDFInfo
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- CN203413625U CN203413625U CN201320496240.6U CN201320496240U CN203413625U CN 203413625 U CN203413625 U CN 203413625U CN 201320496240 U CN201320496240 U CN 201320496240U CN 203413625 U CN203413625 U CN 203413625U
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- air
- fuel mixture
- diesel oil
- shower nozzle
- tracheae
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a low-temperature diesel preheating burner which comprises a gas pipe and an oil pipe sleeved in the gas pipe, wherein an oil-gas mixing inner nozzle is sleeved on the lower end of the oil pipe, an oil-gas mixing outer nozzle is arranged at the lower part of the gas pipe, an oil-gas mixing orifice is formed in the oil-gas mixing outer nozzle; and a liquefied gas pipe is arranged near the gas pipe, the lower end of the liquefied gas pipe is connected with a winding type preheating pipe surrounding the oil-gas mixing outer nozzle, a spiral multipoint type surrounding incandescent light extends from the lower end of the winding type preheating pipe, and a plurality of liquefied gas orifices are formed in the inner side of the spiral multipoint type surrounding incandescent light. According to the low-temperature diesel preheating burner disclosed by the utility model, by adopting a reasonable burner structure, the problem of atomization of diesel is solved, the spiral multipoint type surrounding incandescent light is additionally provided, the environment problem of ignition temperature of the diesel is solved so that a coal gasifying furnace is baked by directly igniting the diesel under a low-temperature environment, the industrial blank that the diesel is adopted for directly baking the furnace is filled up, the cold-state running of the coal gasifying furnace can be realized according to the demand, and the energy consumption and fuel cost are reduced.
Description
Technical field
The present invention relates to baker burner technical field, especially relate to a kind of diesel oil at low-temperature preheating burner for gasification furnace baker.
Background technology
Can in coal gasification industry, startup burner be the core component in coal gasifier startup procedure, and can startup burner be lighted smoothly, be realize smoothly the key that coal gasifier is successfully driven.The conventional mode that adopts gaseous fuel and liquid fuel collocation to use of baker, such as liquefied gas baker+diesel oil baker, factory's fuel gas baker+diesel oil baker, direct factory fuel gas baker etc.
In gasification furnace baker process, need gasifier temperature progressively be raise in strict accordance with heating curve, and fusing point-18 ℃ of diesel oil, relative density 0.87-0.9, boiling point 282-338 ℃, 38 ℃ of flash-points, 257 ℃ of ignition temperatures.Physical property due to diesel oil itself, and the employing of baker burner is inversion type, diesel oil atomization particle is larger, therefore in coal gasifier the ignition temperature of diesel oil more than 500 ℃, and cannot ignite under baker initial stage low temperature environment, can not smooth combustion even if light, therefore coal gasification industry adopts diesel oil at low-temperature space as the direct baker of fuel at present or blank.
1, some company's gasification furnace baker flow process does not arrange natural gas and diesel pipeline, and the tail gas of directly producing with the said firm is as fuel, so gasification furnace production equipment needs regularly maintenance, in order to make normally to drive after gasification furnace maintenance, between turn(a)round, needing to utilize diesel oil that oven drying temperature is remained on more than 500 ℃.Suppose that turn(a)round is 26 days, diesel consumption is 250Kg/h, and diesel oil is according to 9000 yuan/ton of valuation, and between turn(a)round, single diesel consumption cost, up to 1,170,000 yuan, wastes energy and fuel cost.
2, existing gasification furnace adopts liquefied gas+diesel oil baker flow process, and liquefied gas large usage quantity, need arrange lng tanker as storage tank, but liquefied gas storage need to have the particular place layout of safe distance scope, and risk is higher, is unfavorable for application implementation.Therefore gasification furnace baker becomes the bottleneck of gasification furnace initial start-up and involuntary stoppage driving.
3, for the CO of our company baker, save the economic benefit of volume increase MDI, purify ice chest CO Design cooling load 17500 Nm
3/ h, photochemical operation does not have the CO of surplus at full capacity time for our baker, and normal gasification furnace needs hot standby, the about 200--400 Nm of baker CO consumption
3/ h, producing 1 ton of MDI needs 195 Nm
3cO gas, calculate with 15 days, convert out the MDI that produces less 400 tons of left and right, monthly once, year underproduction MDI:4800t/y, according to 4000 yuan of MDI rates of gross profit/(ton MDI), can increase MDI annual earnings: 1,920 ten thousand yuan (turnover income).
Summary of the invention
The deficiency existing for above-mentioned prior art, object of the present invention will provide a kind of diesel oil at low-temperature preheating burner for coal gasifier baker, its rational nozzle structure, solved diesel oil atomization problem, increase helical form liquefied gas altar lamp, solved diesel oil ignited temperature environment problem, make coal gasifier can adopt diesel oil directly to ignite under low temperature environment and carry out baker, also can realize according to demand coal gasifier cold conditions and drive, save energy consumption and fuel cost.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of diesel oil at low-temperature preheating burner, comprise tracheae and be sheathed on endotracheal oil pipe, in oil pipe, it is diesel oil runner, between tracheae and oil pipe, be formed with air flow channel, the lower end of oil pipe is socketed with shower nozzle in air-fuel mixture, in air-fuel mixture, the bottom of shower nozzle is provided with atomization chamber, in air-fuel mixture, shower nozzle is provided with by the diesel oil spray orifice of diesel oil runner and atomization chamber conducting and by the air spray orifice of air flow channel and atomization chamber conducting, the bottom of tracheae is provided with the outer shower nozzle of air-fuel mixture, the outer shower nozzle of air-fuel mixture inside is formed with the air-fuel mixture chamber of the scalar horn mouth shape being communicated with atomization chamber, the outer shower nozzle of air-fuel mixture is provided with air-fuel mixture spray orifice, the side of tracheae is provided with liquefaction tracheae, the lower end of liquefaction tracheae be connected be surrounded on the outer shower nozzle of air-fuel mixture outside around formula economizer bank, around formula economizer bank lower end, be extended with helical form multipoint mode around altar lamp, multipoint mode is provided with some liquefied gas spray orifices around the inner side of altar lamp.
Wherein, be arranged with damper seat on tracheae, damper seat is provided with damper plate, and damper plate is provided with relatively turnable damper driver plate.Damper seat is provided with around formula heating component regulating sleeve, and liquefaction tracheae is by can being fixedly connected with to up-down adjustment formula with damper seat around formula heating component regulating sleeve.
Wherein, in air-fuel mixture, between shower nozzle and inner surface of trachea, by labyrinth type sealing ring, be tightly connected.
Wherein, the upper end of shower nozzle is conical in air-fuel mixture, and diesel oil spray orifice is located on the conical apex angle of shower nozzle in air-fuel mixture, and air spray orifice is a plurality of and take diesel oil spray orifice and be laid in equably in the tapered slope of shower nozzle in air-fuel mixture as the center of circle.
Adopt after technique scheme, the advantage that compared to the prior art the present invention had is:
Diesel oil at low-temperature preheating burner of the present invention, utilize the sleeve type structure of tracheae and oil pipe, respectively in the lower end welding air-fuel mixture of oil pipe shower nozzle and outside the lower end of tracheae welding air-fuel mixture shower nozzle, in air-fuel mixture, in shower nozzle, be formed with atomization chamber, in the outer shower nozzle of oil gas, be formed with air-fuel mixture chamber, diesel oil diesel oil spray orifice shower nozzle in air-fuel mixture enters in atomization chamber, combustion air air spray orifice shower nozzle in air-fuel mixture enters in atomization chamber, the atomization under the punching press effect of combustion air of diesel oil in atomization chamber, the diesel particulate that atomization forms and combustion air enter into air-fuel mixture chamber under pressure fully to be mixed, the last ejection of the air-fuel mixture spray orifice on shower nozzle from air-fuel mixture, form the mixed atomizing of diesel particulate and combustion air.Diesel oil atomization structure of the present invention is compared with the atomization structure of existing diesel oil burner, and the diesel particulate that diesel oil atomization forms is less, is more conducive to evenly mix with combustion air, to reduce the ignition temperature of diesel oil, diesel oil is more easily ignited under low temperature environment.Diesel oil at low-temperature preheating burner of the present invention, utilize liquefaction tracheae to be provided with around formula economizer bank and multipoint mode around altar lamp, around formula economizer bank around the outside that is arranged at shower nozzle outside air-fuel mixture, can carry out pre-heating temperature elevation to the atomized diesel fuel in air-fuel mixture chamber and combustion air, around the bottom of formula economizer bank, be extended with spiral helicine multipoint mode around altar lamp, multipoint mode is positioned at the ejection region of atomized diesel fuel and the combustion air of air-fuel mixture spray orifice bottom around altar lamp, when multipoint mode is lighted around altar lamp, the environment temperature in the ejection region of atomized diesel fuel and combustion air is promoted to the ignition temperature that reaches diesel oil, multipoint mode is provided with some liquefied gas spray orifices around the inner side of altar lamp, some liquefied gas spray orifices form a plurality of ignition locations, be more conducive to diesel oil ignited.The present invention compares with the diesel oil ignited temperature of 500 ℃ of existing diesel oil burners, can realize diesel oil takes fire under low temperature environment, and due to diesel oil atomization better effects if of the present invention, when gasifier temperature is increased to 400 ℃ of left and right, can close the multipoint mode of companion's burning around altar lamp.The invention solves diesel oil atomization problem and diesel oil ignited temperature environment problem, make coal gasifier can adopt diesel oil directly to ignite under low temperature environment and carry out baker, thereby having filled up gasification furnace adopts the industry of the direct baker of diesel oil blank, also can realize according to demand coal gasifier cold conditions and drive, save energy consumption and fuel cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1: structural representation of the present invention.
Fig. 2: the local structure for amplifying schematic diagram in A place in Fig. 1.
In figure, 1: tracheae; 2: oil pipe; 3: liquefaction tracheae; 4: shower nozzle in air-fuel mixture; 5: the outer shower nozzle of air-fuel mixture; 6: labyrinth type sealing ring; 7: damper plate; 8: damper seat; 9: around formula heating component regulating sleeve; 10: damper driver plate; 11: around formula economizer bank; 12: multipoint mode is around altar lamp; 13: liquefied gas spray orifice; 14: diesel oil spray orifice; 15: air spray orifice; 16: air-fuel mixture spray orifice; 17: atomization chamber; 18: air-fuel mixture chamber.
The specific embodiment
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, see shown in Fig. 1 to Fig. 2: a kind of diesel oil at low-temperature preheating burner, comprise tracheae 1 and be sheathed on the oil pipe 2 in tracheae 1, in oil pipe 2, it is diesel oil runner, between tracheae 1 and oil pipe 2, be formed with air flow channel, the upper end of oil pipe 2 is vertically provided with diesel oil import, and the upper end of tracheae 1 is laterally provided with air intlet.
The lower end of oil pipe 2 is socketed with shower nozzle 4 in air-fuel mixture, in air-fuel mixture, the bottom of shower nozzle 4 is provided with atomization chamber 17, and in air-fuel mixture, shower nozzle 4 is provided with by the diesel oil spray orifice 14 of diesel oil runner and atomization chamber 17 conductings and by the air spray orifice 15 of air flow channel and atomization chamber 17 conductings.
In air-fuel mixture, the upper end of shower nozzle 4 is conical, and cone angle is 90 °, and diesel oil spray orifice 14 is located on the conical apex angle of shower nozzle 4 in air-fuel mixture, and diesel oil diesel oil spray orifice 14 shower nozzle 4 in air-fuel mixture enters in atomization chamber 17.Air spray orifice 15 is four and take diesel oil spray orifice 14 and be laid in equably in the tapered slope of shower nozzle 4 in air-fuel mixture as the center of circle, air spray orifice 15 is vertical with tapered slope, combustion air air spray orifice 15 shower nozzle 4 in air-fuel mixture enters in atomization chamber 17, the atomization under the punching press effect of combustion air of the diesel oil in atomization chamber 17.
The bottom of tracheae 1 is provided with the outer shower nozzle 5 of air-fuel mixture, and the outer shower nozzle of air-fuel mixture 5 inside are formed with the air-fuel mixture chamber 18 of the scalar horn mouth shape being communicated with atomization chamber 17, and the outer shower nozzle 5 of air-fuel mixture is provided with air-fuel mixture spray orifice 16.Atomized diesel fuel and combustion air be interior even mixing in air-fuel mixture chamber 18, finally from 16 ejections of air-fuel mixture spray orifice, forms the mixed atomizing of diesel particulate and combustion air.In air-fuel mixture, between shower nozzle 4 and tracheae 1 inwall, by labyrinth type sealing ring 6, be tightly connected, strengthen the sealing of the interior shower nozzle 4 of air-fuel mixture and tracheae 1, prevent that diesel oil and combustion air from entering in tracheae 1 under oil gas shower nozzle drag effect.
The side of tracheae 1 is provided with liquefaction tracheae 3, liquefaction tracheae 3 be arranged in parallel with tracheae 1, the lower end of liquefaction tracheae 3 be connected be surrounded on the outer shower nozzle of air-fuel mixture 5 outsides around formula economizer bank 11, around formula economizer bank 11 lower ends, be extended with helical form multipoint mode around altar lamp 12, multipoint mode is provided with some liquefied gas spray orifices 13 around the inner side of altar lamp 12.Around formula economizer bank 11 around the outside that is arranged at shower nozzle 5 outside air-fuel mixture, can carry out pre-heating temperature elevation to the atomized diesel fuel in air-fuel mixture chamber 18 and combustion air, around the bottom of formula economizer bank 11, be extended with spiral helicine multipoint mode around altar lamp 12, multipoint mode is positioned at the ejection region of atomized diesel fuel and the combustion air of air-fuel mixture spray orifice 16 bottoms around altar lamp 12, when multipoint mode is lighted around altar lamp 12, the environment temperature in the ejection region of atomized diesel fuel and combustion air is promoted to the ignition temperature that reaches diesel oil, multipoint mode is provided with some liquefied gas spray orifices 13 around the inner side of altar lamp 12, some liquefied gas spray orifices 13 form a plurality of ignition locations, be more conducive to diesel oil ignited.
On tracheae 1, be arranged with damper seat 8, damper seat 8 is provided with damper plate 7, and damper plate 7 is provided with relatively turnable damper driver plate 10.Damper seat 8 is provided with around formula heating component regulating sleeve 9, and liquefaction tracheae 3 is by can being fixedly connected with to up-down adjustment formula with damper seat 8 around formula heating component regulating sleeve 9.By can regulate easily multipoint mode around the height of shower nozzle 5 outside the relative air-fuel mixture of altar lamp 12 around formula heating component regulating sleeve 9.
The present invention will solve the problems such as the atomization, low-temperature ignition of existing diesel oil burner, and existing diesel oil burner is applied to more than 500 ℃, and atomizing particle is too large, and nozzle structure is unreasonable, can not light at low-temperature space.Therefore the present invention redesigns nozzle structure, increases atomizing effect and is atomized into molecule, increases diesel oil water-bath preheating, increases liquefied gas altar lamp.
The atomizer data of the diesel oil at low-temperature burner of initial design: external diameter 42mm; 8 diameter 1.5mm spray orifices are uniformly distributed; Passage length 5mm; Atomizer chamber length 30mm; Atomization angle 40 degree.Through spray test, watch atomizing effect and atomization angle, atomizing effect makes moderate progress but also has gap from ideal effect, and atomization initial stage compressed air and the adjustment of diesel oil ratio have a difficulty.This diesel oil at low-temperature burner exists following problem: A, air and diesel oil fully not to mix, and atomizing effect is bad, and oil gas does not reach abundant proportioning in shower nozzle chamber; After air-fuel mixture, spray lift inadequate, only have 0.3MP; B, be difficult to normal ignition; C, burn insufficient; D, burning time are less than within one minute, just extinguishing tempering.
The failure of fire trial for the first time, improving measures: reduce shower nozzle aperture and increase shower nozzle quantity; Improve spray structure and increase shower nozzle area.
The atomizer data of the diesel oil at low-temperature burner after improving for the first time: external diameter 52mm; 18 diameter 0.5mm spray orifices are uniformly distributed; Passage length 5mm; Atomizer chamber length 50mm; Atomization angle 40 degree.There is following problem: A, diesel oil back pressure factory air pipe 1 line in this diesel oil at low-temperature burner, cannot mixed aerosol; B, medium be containing more impurity, cannot normal injection; C, igniter are lighted a fire unstable; In D, stove, take out and draw after increasing, combustion instability.
Refire time test failure, improving measures: increase injection diameter, increase flux; Improve factory air and regulate control accuracy; Improve orifice structure, reduce shower nozzle material thickness, by 6mm, drop to 3mm, and orifice is adopted to broadening formation design; Revise liquefied gas altar lamp, and through type design is changed into endless tube coiling is design.
The atomizer data of the diesel oil at low-temperature burner after improving for the second time: external diameter 52mm; 24 diameter 0.8mm spray orifices are uniformly distributed, and increase outside 1.5mm horn mouth trapezoidal channel design; Passage length 30mm; Atomizer chamber length 50mm; Atomization angle 40 degree; Mixed oil and gas preheats, and adopts and heats around formula; Employing is around formula 45 degree multi-point sparks; Improve shower nozzle 4 structures in air-fuel mixture.
Fire trial is for the third time lighted a fire successfully, and flame is more stable, sustained combustion 10 minutes.Of short duration successfully rear flame-out parking of lighting a fire, again in ignition process, at burner head, there is coking phenomenon, cause burner head to stop up, based on this fire trial, further improve ignition operation standard operating procedure.
The success of four-ignition test firing, 200 ℃ of baker thermocouple indications, this thermocouple and flame are closer, indicate higherly, 26 ℃ of gasification furnace outlet temperatures, can stable operation, can slowly heat up, meet gasification baker heating rate, can reach gasification furnace baker Expected Results.
By repeatedly testing, diesel oil at low-temperature preheating burner is researched and developed successfully, has solved and has hindered the bottleneck that gasification is driven.Based on the present invention, also can, to the further optimization of this diesel oil at low-temperature preheating burner and perfect: A, even around formula liquefied gas companion burning pore footpath, after being raised to more than 400 ℃, temperature can extinguish altar lamp; B, improve the notch cuttype spray orifice machining accuracy that shower nozzle horn mouth channels designs 0.8mm becomes 1.5mm; C, diesel oil have the problem of stopping up shower nozzle, and diesel oil is dirtier, on diesel oil pipe 2 roads, adds filter to address this problem; On D, liquefaction tracheae 3, arrange and meet the spark arrester that on-the-spot liquefied gas is used, be equipped with the configuration of fixing liquefaction tracheae 3 lines; E, burner are set up automatic electronic igniting device.
Claims (5)
1. a diesel oil at low-temperature preheating burner, comprises tracheae (1) and is sheathed on the oil pipe (2) in tracheae (1), in oil pipe (2), is diesel oil runner, between tracheae (1) and oil pipe (2), is formed with air flow channel, it is characterized in that:
The lower end of oil pipe (2) is socketed with shower nozzle (4) in air-fuel mixture, in air-fuel mixture, the bottom of shower nozzle (4) is provided with atomization chamber (17), in air-fuel mixture, shower nozzle (4) is provided with by the diesel oil spray orifice (14) of diesel oil runner and atomization chamber (17) conducting and by the air spray orifice (15) of air flow channel and atomization chamber (17) conducting, the bottom of tracheae (1) is provided with the outer shower nozzle (5) of air-fuel mixture, the outer shower nozzle (5) of air-fuel mixture inside is formed with the air-fuel mixture chamber (18) of the scalar horn mouth shape being communicated with atomization chamber (17), the outer shower nozzle (5) of air-fuel mixture is provided with air-fuel mixture spray orifice (16),
The side of tracheae (1) is provided with liquefaction tracheae (3), the lower end of liquefaction tracheae (3) be connected be surrounded on the outer shower nozzle (5) of air-fuel mixture outside around formula economizer bank (11), around formula economizer bank (11) lower end, be extended with helical form multipoint mode around altar lamp (12), multipoint mode is provided with some liquefied gas spray orifices (13) around the inner side of altar lamp (12).
2. diesel oil at low-temperature preheating burner according to claim 1, it is characterized in that: on tracheae (1), be arranged with damper seat (8), damper seat (8) is provided with damper plate (7), and damper plate (7) is provided with relatively turnable damper driver plate (10).
3. diesel oil at low-temperature preheating burner according to claim 2, it is characterized in that: damper seat (8) is provided with around formula heating component regulating sleeve (9), liquefaction tracheae (3) is by can being fixedly connected with to up-down adjustment formula with damper seat (8) around formula heating component regulating sleeve (9).
4. diesel oil at low-temperature preheating burner according to claim 1, is characterized in that: in air-fuel mixture, between shower nozzle (4) and tracheae (1) inwall, by labyrinth type sealing ring (6), be tightly connected.
5. diesel oil at low-temperature preheating burner according to claim 1, it is characterized in that: in air-fuel mixture, the upper end of shower nozzle (4) is conical, diesel oil spray orifice (14) is located on the conical apex angle of shower nozzle (4) in air-fuel mixture, and air spray orifice (15) is for a plurality of and take diesel oil spray orifice (14) and be laid in equably in the tapered slope of the interior shower nozzle (4) of air-fuel mixture for the center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496240.6U CN203413625U (en) | 2013-08-14 | 2013-08-14 | Low-temperature diesel preheating burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496240.6U CN203413625U (en) | 2013-08-14 | 2013-08-14 | Low-temperature diesel preheating burner |
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| Publication Number | Publication Date |
|---|---|
| CN203413625U true CN203413625U (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320496240.6U Withdrawn - After Issue CN203413625U (en) | 2013-08-14 | 2013-08-14 | Low-temperature diesel preheating burner |
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| Country | Link |
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| CN (1) | CN203413625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411216B (en) * | 2013-08-14 | 2015-07-22 | 宁波市天基隆智控技术有限公司 | Diesel low-temperature preheating burner |
-
2013
- 2013-08-14 CN CN201320496240.6U patent/CN203413625U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411216B (en) * | 2013-08-14 | 2015-07-22 | 宁波市天基隆智控技术有限公司 | Diesel low-temperature preheating burner |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20150722 |
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| RGAV | Abandon patent right to avoid regrant |