CN205690401U - The strong mixing multi fuel mixing burner of direct current - Google Patents
The strong mixing multi fuel mixing burner of direct current Download PDFInfo
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- CN205690401U CN205690401U CN201620546627.1U CN201620546627U CN205690401U CN 205690401 U CN205690401 U CN 205690401U CN 201620546627 U CN201620546627 U CN 201620546627U CN 205690401 U CN205690401 U CN 205690401U
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Abstract
A kind of strong mixing multi fuel mixing burner of direct current, including central canal with for the primary air piping of conveying powdered fuel, it is provided with in central canal and moves towards consistent liquid and gaseous fuel pipe with it, the end of liquid and gaseous fuel pipe connects oil gas atomizer, central canal end arranges the sparking electrode to the sparking of oil gas atomizer, sparking electrode connects sparking electric wire, and sparking electric wire is positioned in central canal, and the top of central canal is flame-observing hole；Primary air piping entrance point be bend pipe, stage casing and end be straight tube, central canal is arranged in straight length, and passes bend pipe.This utility model is capable of single fuel firing and air-liquid, powdered solid fuel compound combustion, and safe and reliable, easy to adjust, burn-off rate is high, the thermal efficiency is high, it is often more important that low azo-cycle is protected.
Description
Technical field
This utility model belongs to industrial burner technical field, particularly to a kind of strong mixing multi fuel mixed combustion of direct current
Device.
Background technology
For energy-saving and emission-reduction, China spares no high price, and with 75,000,000 dollars of equipment Imported From German EMH Company pulverized coal combustion systems, but passes through
Application practice in recent years, it was demonstrated that still suffer from following deficiency:
1, coal burner itself can not as neat gas burner normal combustion, but utilize other fuel burning
Device point catches fire after normal combustion, and pot in-furnace temperature is brought up to 500 600 DEG C, after reaching Coal Powder Ignition Point, then by coal burner
Coal dust is sent into boiler burn.The drawback of this burning is that initial stage igniting difficulty is relatively big, burn whether abundant bad directly
See regulation；
2, burner leaves boiler and can not catch fire, and range is limited to very much；
3, burner own combustion is incomplete, this is because designed two, tertiary air and First air coal can not be in short distances
It is sufficiently mixed the most rapidly and to be caused.
Due to the existence of problem above, current this coal burner can only burn fat coal, it is impossible to burning low grade coal, only
Can be burnt a kind of fuel, it is impossible to pluralities of fuel compound combustion, causes fuel type single, and hypofunction, range is limited
System.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of direct current strong mixing many combustions
Material mixing burner, it is possible to realize single fuel firing and air-liquid, powdered solid fuel compound combustion, and safe and reliable, tune
Joint is convenient, burn-off rate is high, the thermal efficiency is high, it is often more important that low nitre environmental protection.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of strong mixing multi fuel mixing burner of direct current, including central canal 1 with for the First air of conveying powdered fuel
Pipe 4, is provided with in central canal 1 and moves towards consistent liquid and gaseous fuel pipe 2 with it, and the end of liquid and gaseous fuel pipe 2 is even
Connecing oil gas atomizer 11, central canal 1 end arranges the sparking electrode 12 to oil gas atomizer 11 sparking, and sparking electrode 12 is even
Taking thermoelectricity line 3, sparking electric wire 3 is positioned in central canal 1, and the top of central canal 1 is flame-observing hole 13；Primary air piping 4 entrance point is
Bend pipe, stage casing and end are straight tube, and central canal 1 is arranged in straight length, and passes bend pipe.
The entrance point of described primary air piping 4 is 45 ° of bend pipes, arranges cone outside primary air piping 4 end and central canal 1 end
Air channel of shape, the cross-sectional area everywhere in this air channel is equal and is equal to the cross-sectional area of primary air piping 4 and the horizontal stroke of central canal 1
The difference of sectional area, arranges the spiral type First air vane group 7 of certain angle, at primary air piping 4 bend pipe in air channel of taper
Import department arranges one-level even powder helical blade set 5, arranges two grades of even powder spirals between primary air piping 4 straight length and central canal 1
Vane group 6.
At a certain distance from after described First air vane group 7 exit end face, arrange that drum diameter is bigger and and tangent to periphery
The secondary wind vane group 8 that direction is angled.
At a certain distance from after described secondary wind vane group 8, diameter is set and more greatly and becomes certain angle with burner centerline
The spiral helicine tertiary air vane group 9 of degree.
At a certain distance from after described tertiary air vane group 9, i.e. burner outlet end, it is positioned on burner housing and sets
Put four wind gap nozzles 10 of adjustable slit shape.
Described secondary wind vane group 8 communicates with secondary air chamber 15, and tertiary air vane group 9 communicates with tertiary chamber 16, four times
Wind gap nozzle 10 communicates with four air compartments 17, and described secondary air chamber 15,16, four air compartments 17 of tertiary chamber are scroll casing shape,
Principal section is cylindric, and secondary air chamber 15 is surrounded by tertiary chamber 16, and tertiary chamber 16 is surrounded by four air compartments 17, secondary
Air compartment 15, the entrance of 16, four air compartments 17 of tertiary chamber are respectively provided with regulation valve plate 18, respectively regulation secondary air chamber 15, tertiary air
The size of 16, four air compartment 17 apertures in room.
Described secondary air chamber 15,16, four air compartments 17 of tertiary chamber are all connected with overfire air fan.
The end face of described First air vane group 7, secondary wind vane group 8,9, four wind gap nozzles 10 of tertiary air vane group
And the surrounded space of inwall forms the combustion space of burner, i.e. combustor 14.
Compared with prior art, the beneficial effects of the utility model are:
1, due to this burner use strength mixing and multistage combustion technology, burning excess air coefficient low (α=
1.05～1.15), fuel burn-off rate is high (η=98.5%～99.5%), in practice it has proved that fractional energy savings is 30%～45%.
2, according to this Practical energy-saving index, it was demonstrated that it is fewer than the combustion apparatus of traditional combustion raw coal boiler burns 30%～45%
Raw coal, much fail the Hydrocarbon of after-flame owing to traditional combustion system flue gas also existing, and this burner after-flame
Rate is high, so hydrocarbon emission amount reduces 100% accordingly, has direct low-carbon (LC) effect.
3, progressively carrying out due to this burner, ignition temperature is also stepped up, so formation of nitrogen oxides is the lowest, and institute
To possess low nitrogen effect completely；This combustion system is after heat energy is utilized, and flue gas uses high-efficient cloth-bag dust precipitator and high-efficiency desulfurization
Denitrating tower, in practice it has proved that the environmental protection index of this combustion system is better than the burning and exhausting of natural gas.
4, which kind of raw material no matter this combustion system, use, all strictly use corresponding safety measure by national safety standard,
Such as: at boiler body design and installation explosion proof door, burner uses flame monitoring warning system, and the equal design and installation of Bunker is breathed
System, explosion-protection equipment, inert gas protection system etc., it is achieved multistage UNPROFOR, safe and reliable.
5, this burner uses unique two, three, four wind design, makes fuel combustion progressively carry out, makes burner never tie
Jiao, owing to designing four wind of different angles, makes flame and tweer form a circle air curtain, makes flame not sweep furnace wall, and furnace wall is not
Dust stratification, exempts from coking.
6, using closed storage and strength to deliver into burner due to dusty fuel, the ashes cloth bag in flue gas removes
Dirt device dedusting, storage, and it is purged conveying by closing mode, it is therefore prevented that secondary pollution.
7, this burner runs and uses computer to carry out automatic monitoring system, so safe and reliable to operation, saving of work and time province
Manpower.
8, the strong mixing multi fuel mixing burner of this direct current is suitable for fuel type:
Natural gas, oil liquefied gas, artificial coal gas, oil field gas, biomass powder, mud powder, greasy filth powder, coal dust and each
Plant liquid compound fuel.
9, combustion technology characteristic:
This utility model burner by above fuel mixed combustion and independently can burn, and can be local according to user
Fuel actual state, by different proportion compound combustion.
10, the scope of application:
This utility model burner is applicable to various Industrial Boiler, kiln, normal-pressure boiler, and can be to need open firing
Equipment provides thermal source, is particularly well-suited to various old-fashioned coal-burning boilers (vertical or horizontal boiler) are implemented environment-friendly and energy-saving emission-reduction
Transformation.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is the left view of Fig. 1.
Detailed description of the invention
Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings with embodiment.
As depicted in figs. 1 and 2, a kind of strong mixing multi fuel mixing burner of direct current, including central canal 1 with for carrying powder
The primary air piping 4 of shape fuel, is provided with in central canal 1 and moves towards consistent liquid and gaseous fuel pipe 2 with it, liquid and gas combustion
The end of material pipe 2 connects oil gas atomizer 11, and central canal 1 end arranges the sparking electrode to oil gas atomizer 11 sparking
12, sparking electrode 12 connects sparking electric wire 3, and sparking electric wire 3 is positioned in central canal 1, and the top of central canal 1 is flame-observing hole 13；One
Secondary airduct 4 entrance point be 45 ° of bend pipes, stage casing and end be straight tube, central canal 1 is arranged in straight length, and passes bend pipe.One
Air channel of taper is set outside secondary airduct 4 end and central canal 1 end, the cross-sectional area everywhere in this air channel equal and etc.
In cross-sectional area and the difference of the cross-sectional area of central canal 1 of primary air piping 4, air channel of taper arranges the spiral shell of certain angle
Rotation shape First air vane group 7, arranges one-level even powder helical blade set 5 in primary air piping 4 bend pipe import department, straight at primary air piping 4
Two grades of even powder helical blade set 6 are set between pipeline section and central canal 1.
At a certain distance from after First air vane group 7 exit end face, arrange that drum diameter is bigger and and tangent to periphery direction
Angled secondary wind vane group 8.
At a certain distance from after secondary wind vane group 8, it is bigger and angled with burner centerline that diameter is set
Spiral helicine tertiary air vane group 9.
At a certain distance from after tertiary air vane group 9, i.e. burner outlet end, being positioned on burner housing setting can
Adjust four wind gap nozzles 10 of slit shape.
Secondary wind vane group 8 communicates with secondary air chamber 15, and tertiary air vane group 9 communicates with tertiary chamber 16, and four times wind is narrow
Seam nozzle 10 communicates with four air compartments 17, and secondary air chamber 15,16, four air compartments 17 of tertiary chamber are scroll casing shape, and principal section is
Cylindrical shape, secondary air chamber 15 is surrounded by tertiary chamber 16, and tertiary chamber 16 is surrounded by four air compartments 17, secondary air chamber 15,
The entrance of 16, four air compartments 17 of tertiary chamber is respectively provided with regulation valve plate 18, respectively regulation secondary air chamber 15, tertiary chamber 16, four
The size of secondary air compartment 17 aperture.
Secondary air chamber 15,16, four air compartments 17 of tertiary chamber are all connected with overfire air fan.
The end face of First air vane group 7, secondary wind vane group 8,9, four wind gap nozzles 10 of tertiary air vane group and
The surrounded space of inwall forms the combustion space of burner, i.e. combustor 14.
Its operation principle:
Gas or liquid fuel are through oil gas atomizer 11, the fuel after atomization and First air Forced Mixing, in sparking
Ignition under electrode 12 electric spark effect, after flameholding, First air is with powdered solid fuel, through one-level even powder spiral
Vane group 5, makes First air with certain swirl strength flowing, the centrifugal action overcoming dusty fuel to flow in bend pipe, makes
The more uniform flowing of gas powder flow ratio, then through two grades of even powder helical blade set 6, make gas powder stream enter conical helical pattern with being more uniformly distributed
First air vane group 7, make gas powder stream with the top of certain swirl strength flowing in combustion chamber 14, produce one at combustor 14 center
Determine negative pressure region, make gas and oil flame mix with gas powder stream and make dusty fuel be heated by force, make fugitive constituent in solid fuel separate out
Stable burning of fighting, flame continues flow forward, mixes by force with quantitative secondary wind, makes part carbon atom in fire smoke gases
Aoxidizing and burn, flame continues flow forward, meets with a certain amount of tertiary air again, the strongest the mixing with flame of tertiary air air-flow
Close, in tertiary air oxygen with in flame carbon atom oxidation and burn, fire smoke gases continue forward, outflow combustor 14 and by four times
Bellows chamber encloses, and makes remaining combustible after-flame under four wind actions in fire smoke gases, and fire smoke gases is produced with burning
Heat enter and be heated equipment.
Specific works process of the present utility model:
1. igniting:
A, first startup primary air fan send appropriate air by First air vane group 7 to burner；
B, give sparking electrode 12 be energized, make electrode produce spark；
C, give appropriate combustion gas or fuel oil through oil gas atomizer 11 again, mix with First air after atomization, at spark work
With lower and ignition, then adjust fuel and primary air flow makes its flameholding, after flameholding, cut off sparking power supply；
2. single fuel firing:
A, fuel oil or combustion gas single fuel firing: after fuel oil or combustion gas ignition are stablized, start overfire air fan, and difference
Regulate one, two, three, four wind air quantity, tune up fuel quantity simultaneously；
B, single pulverized solid fuel combustion: after fuel oil or combustion gas sparking flameholding, start overfire air fan, and adjust respectively
Saving one, two, three, four wind air quantity, give appropriate powdered solid fuel the most again, mix and ignition with flame, burning is steady
After Ding, tune up powdered solid fuel amount, also shut off fuel oil, combustion gas；
3. multi fuel compound combustion:
After powdered solid fuel ignition is stable, and scalable fuel oil, combustion gas, the ratio of powdered solid fuel, make
It is properly functioning.
Claims (8)
1. the strong mixing multi fuel mixing burner of direct current, including central canal (1) with for the First air of conveying powdered fuel
Pipe (4), it is characterised in that be provided with in central canal (1) and move towards consistent liquid and gaseous fuel pipe (2), liquid and gas with it
The end of fluid fuel pipe (2) connects oil gas atomizer (11), and central canal (1) end is arranged strikes sparks to oil gas atomizer (11)
Sparking electrode (12), sparking electrode (12) connect sparking electric wire (3), sparking electric wire (3) be positioned in central canal (1), central canal
(1) top is flame-observing hole (13)；Primary air piping (4) entrance point be bend pipe, stage casing and end be straight tube, central canal (1) arrange
In straight length, and pass bend pipe.
The strong mixing multi fuel mixing burner of direct current the most according to claim 1, it is characterised in that described primary air piping (4)
Entrance point be 45 ° of bend pipes, air channel of taper is set outside primary air piping (4) end and central canal (1) end, this is once
The cross-sectional area everywhere in air channel is equal and is equal to the cross-sectional area of primary air piping (4) and the difference of the cross-sectional area of central canal (1),
Air channel of taper arranges spiral type First air vane group (7) of certain angle, arranges in primary air piping (4) bend pipe import department
One-level even powder helical blade set (5), arranges two grades of even powder helical blades between primary air piping (4) straight length and central canal (1)
Group (6).
The strong mixing multi fuel mixing burner of direct current the most according to claim 2, it is characterised in that at described First air blade
At a certain distance from after group (7) exit end face, the secondary wind that drum diameter is bigger and angled with tangent to periphery direction is set
Vane group (8).
The strong mixing multi fuel mixing burner of direct current the most according to claim 3, it is characterised in that at described secondary wind blade
Group (8) afterwards at a certain distance from, arrange that diameter is bigger and and the angled spiral helicine tertiary air blade of burner centerline
Group (9).
The strong mixing multi fuel mixing burner of direct current the most according to claim 4, it is characterised in that at described tertiary air blade
Group (9) afterwards at a certain distance from, i.e. burner outlet end, be positioned on burner housing that to arrange four wind of adjustable slit shape narrow
Seam nozzle (10).
The strong mixing multi fuel mixing burner of direct current the most according to claim 5, it is characterised in that described secondary wind vane group
(8) communicating with secondary air chamber (15), tertiary air vane group (9) communicates with tertiary chamber (16), four wind gap nozzles (10) with
Four times air compartment (17) communicates, and described secondary air chamber (15), tertiary chamber (16), four air compartments (17) are scroll casing shape, principal section
For cylindrical shape, secondary air chamber (15) is surrounded by tertiary chamber (16), and tertiary chamber (16) is surrounded by four air compartments (17), and two
Secondary air compartment (15), tertiary chamber (16), the entrance of four air compartments (17) are respectively provided with regulation valve plate (18), regulate secondary air chamber respectively
(15), tertiary chamber (16), the size of four air compartment (17) apertures.
The strong mixing multi fuel mixing burner of direct current the most according to claim 6, it is characterised in that described secondary air chamber
(15), tertiary chamber (16), four air compartments (17) are all connected with overfire air fan.
8. according to the strong mixing multi fuel mixing burner of direct current described in claim 5 or 6 or 7, it is characterised in that described First air
The end face of vane group (7), secondary wind vane group (8), tertiary air vane group (9), four wind gap nozzles (10) and inwall institute thereof
Surround space and form the combustion space of burner, i.e. combustor (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546627.1U CN205690401U (en) | 2016-06-07 | 2016-06-07 | The strong mixing multi fuel mixing burner of direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546627.1U CN205690401U (en) | 2016-06-07 | 2016-06-07 | The strong mixing multi fuel mixing burner of direct current |
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| Publication Number | Publication Date |
|---|---|
| CN205690401U true CN205690401U (en) | 2016-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620546627.1U Active CN205690401U (en) | 2016-06-07 | 2016-06-07 | The strong mixing multi fuel mixing burner of direct current |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373316A (en) * | 2018-09-10 | 2019-02-22 | 常州大学 | A low nitrogen burner for heating natural gas hot water boiler |
| CN109424961A (en) * | 2017-09-05 | 2019-03-05 | 赫普科技发展（北京）有限公司 | A kind of burner |
| CN110606373A (en) * | 2019-09-29 | 2019-12-24 | 中国石油大学(北京) | Electrostatic method and electrostatic adjustment device for anti-wear of elbow pipe in pneumatic conveying system |
| CN111023147A (en) * | 2019-12-21 | 2020-04-17 | 张忠恕 | Self-temperature-measuring spiral ignition chamber |
| CN113757688A (en) * | 2021-09-30 | 2021-12-07 | 华润水泥技术研发（广西）有限公司 | A channel type combustion device for powder solid waste disposal |
| CN114151789A (en) * | 2022-02-09 | 2022-03-08 | 杭州宾欧新能源技术有限公司 | Burner protected by inert gas |
-
2016
- 2016-06-07 CN CN201620546627.1U patent/CN205690401U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424961A (en) * | 2017-09-05 | 2019-03-05 | 赫普科技发展（北京）有限公司 | A kind of burner |
| CN109373316A (en) * | 2018-09-10 | 2019-02-22 | 常州大学 | A low nitrogen burner for heating natural gas hot water boiler |
| CN110606373A (en) * | 2019-09-29 | 2019-12-24 | 中国石油大学(北京) | Electrostatic method and electrostatic adjustment device for anti-wear of elbow pipe in pneumatic conveying system |
| CN111023147A (en) * | 2019-12-21 | 2020-04-17 | 张忠恕 | Self-temperature-measuring spiral ignition chamber |
| CN111023147B (en) * | 2019-12-21 | 2024-03-19 | 北京凯德石英股份有限公司 | Self-temperature-measuring spiral ignition chamber |
| CN113757688A (en) * | 2021-09-30 | 2021-12-07 | 华润水泥技术研发（广西）有限公司 | A channel type combustion device for powder solid waste disposal |
| CN114151789A (en) * | 2022-02-09 | 2022-03-08 | 杭州宾欧新能源技术有限公司 | Burner protected by inert gas |
| CN114151789B (en) * | 2022-02-09 | 2022-04-22 | 杭州宾欧新能源技术有限公司 | Burner protected by inert gas |
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| C14 | Grant of patent or utility model | ||
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