CN108826285A - Big adjust compares coal burner - Google Patents
Big adjust compares coal burner Download PDFInfo
- Publication number
- CN108826285A CN108826285A CN201810559015.XA CN201810559015A CN108826285A CN 108826285 A CN108826285 A CN 108826285A CN 201810559015 A CN201810559015 A CN 201810559015A CN 108826285 A CN108826285 A CN 108826285A
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- Prior art keywords
- cavity
- wall
- burning
- burner
- coal
- Prior art date
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Links
- 239000003245 coal Substances 0.000 title claims abstract description 82
- 238000002485 combustion reaction Methods 0.000 claims abstract description 52
- 238000009423 ventilation Methods 0.000 claims abstract description 48
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 239000011229 interlayer Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 230000001535 kindling effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 239000002817 coal dust Substances 0.000 abstract description 11
- 238000010304 firing Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
- F23K1/04—Heating fuel prior to delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2900/00—Special features of, or arrangements for fuel supplies
- F23K2900/01041—Heating by using exhaust gas heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/15043—Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention discloses a kind of adjust greatly and compares coal burner, including burner body, the interior of burner body intracavitary is provided with burning cavity, ignition cylinder is provided in burning cavity, ignition cylinder both ends are connected to the inner cavity of burning cavity, the first ventilation of setting ring cavity between ignition drum outer wall and the internal chamber wall of burning cavity, igniting combustion supporting wind entrance are connected to by the first ventilation ring cavity with ignition cylinder；The second ventilation ring cavity is provided between burning cavity outer wall and the internal chamber wall of burner body, main Pulverized Coal entrance passes through the second ventilation ring cavity and combustion chamber.The setting of first ventilation ring cavity and the second ventilation ring cavity, the combustion air and coal dust that are passed through are preheated, it ensure that the stability and burning adequacy of coal dust firing, big adjusting of the invention is resisted than coal burner unstable caused by burner is adjusted, turndown ratio, burner regulation ratio is bigger, and does not need auxiliary fuel.
Description
Technical field
The present invention relates to technical field of burner, compare coal burner more particularly to a kind of big adjust.
Background technique
Coal burner, refers to allow coal dust full combustion in a short time, the equipment for generating high temperature eddy current.According to
On the way, coal burner includes the dedicated coal burner of rotary kiln, steam coal powder burner, the dedicated coal dust firing of asphalt blending station
Device.The adjusting ratio of coal burner refers to, under the premise of not putting into auxiliary fuel, the peak power output of coal burner with
The ratio between minimum output power.Existing coal burner, this is adjusted than generally 1.8~2.5.
The prior art adjusts ratio if it is desired to improve coal burner, generallys use and increases igniter or investment auxiliary combustion
The method of material is realized.Adjusting ratio can be improved in the coal burner for being such as equipped with plasma ignition device, but because of plasma point
The cathode material service life of fiery device is very short, can not use for a long time.Such as it is equipped with the coal burner of Tiny-oil ignition device
It can also be improved adjusting ratio, but fuel consumption is big, operating cost is high.
It does not need to put into auxiliary fuel and do not need increase igniter and can improve in conclusion how to provide one kind
The coal burner of adjustable range becomes those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
It adjusts the object of the present invention is to provide a kind of big than coal burner, to solve above-mentioned of the existing technology ask
Topic makes coal burner not need to put into auxiliary fuel and do not need increase igniter that adjustable range can be improved.
To achieve the above object, the present invention provides following schemes：The present invention provides one kind and adjusts greatly than coal burner,
Including burner body, the burner body it is interior it is intracavitary be provided with burning cavity, igniting is provided in the burning cavity
Combustion barrel, ignition cylinder both ends are connected to the inner cavity of the burning cavity, the ignition drum outer wall with it is described
The first ventilation ring cavity, the inner cavity of the burning cavity outer wall and the burner body are provided between the internal chamber wall of burning cavity
It is provided with the second ventilation ring cavity between wall, igniting combustion supporting wind entrance, the igniting combustion supporting are provided with above the burning cavity
Wind entrance is connected to by the first ventilation ring cavity with the ignition cylinder；The left end of the burning cavity connects ignition coal powder
Fuel inlet, the igniting Pulverized Coal entrance are connected to the inner cavity of the burning cavity, are arranged a little in the burning cavity
The muzzle of firelock, the burning torch is located in the ignition cylinder, and main coal dust combustion is provided with below the burner body
Expect that entrance, the main Pulverized Coal entrance are located at described by the second ventilation ring cavity and combustion chamber, the combustion chamber
The outlet port of ignition cylinder；The burner body is externally connected with secondary air bellow, is provided on the secondary air bellow
Secondary Air entrance, the Secondary Air entrance and the combustion chamber.
Preferably, the burning cavity is fixedly connected with igniting gun on the inner wall of the igniting Pulverized Coal entrance
Frame, the burning torch are fixedly connected on the igniting gun carriage.
Preferably, the burner body is stretched out in the left end of the burning cavity, the igniting combustion supporting wind entrance and described
Igniting Pulverized Coal entrance is respectively positioned on outside the burner body.
Preferably, the body wall of the burning cavity is interlayer wall, and the interlayer wall includes interlayer inner wall and interlayer outer wall, institute
It states and forms third ventilation ring cavity between interlayer inner wall and interlayer outer wall, the interlayer inner wall is far from the igniting Pulverized Coal entrance
One end be provided with through-hole, the through-hole is connected to the third ventilation ring cavity and the first ventilation ring cavity, the igniting combustion supporting
Wind entrance is connected to third ventilation ring cavity.
Preferably, current equalizer is provided between the igniting Pulverized Coal entrance and the burning cavity.
Preferably, crack, the crack are provided between the secondary air bellow inner wall and the burner body outer wall
Inside it is provided with Secondary Air swirl vane.
Preferably, the end of the secondary air bellow is provided with end flange, and the end flange passes through bolt and fixation
The flanged joint being connected on the burner body outer wall.
Preferably, first ventilation ring is intracavitary is provided with thermocouple.
Preferably, the outer wall both ends of the ignition cylinder are each provided with several supporting lugs, the supporting lug it is outer
Surface is fixedly connected on the inner surface of the burning cavity, is reserved with inlet channel between several supporting lugs, it is described into
Gas channel is the communicating passage of the first ventilation ring cavity and the ignition cylinder.
Preferably, the ignition cylinder is ceramics or silicon carbide material, and the length of the ignition cylinder is L, unit
For m, meet L=C1·Q/A1, wherein C1For constant, value is 3.28~4.92 × 10-4, Q be igniting Pulverized Coal convey wind,
Igniting combustion supporting wind total flow, unit m3/ h, A1For the sectional area of the ignition cylinder, unit m2；The ignition cylinder
The sectional area of outlet is A2, unit m2, A2=C2·A1, wherein C2For constant, value is 0.6~0.8.
The present invention achieves following technical effect compared with the existing technology：
The present invention provides a kind of big adjustings than coal burner, the ignition drum outer wall and the burning cavity
The first ventilation of setting ring cavity, the igniting combustion supporting wind entrance are fired by the first ventilation ring cavity and the igniting between internal chamber wall
Burn cylinder connection；The second ventilation ring cavity is provided between the burning cavity outer wall and the internal chamber wall of the burner body, it is described
Main Pulverized Coal entrance passes through the second ventilation ring cavity and combustion chamber.The setting of the first ventilation ring cavity, not only may be used
Think device radiation, improves service using life, and can preheat simultaneously to the igniting combustion supporting wind being passed through, ensure that igniting
The stability and burning adequacy of coal dust firing.The second ventilation ring cavity preheats the main Pulverized Coal passed through in it,
Improve the stability and burning adequacy of main coal dust firing；Big adjusting of the invention is enabled to resist burning than coal burner
Device is unstable caused by adjusting, and burner is allowed arbitrarily to adjust in 10%~100% load range, and adjusts fortune a wide range of
Completely without auxiliary fuel in row.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the big structural schematic diagram adjusted than coal burner of the invention；
Fig. 2 is big adjusting of the invention than coal burner B-B cross-sectional view；
Fig. 3 is big adjusting of the invention than the portion coal burner A structure enlargement diagram；
Wherein, 1 is burner body, and 2 be igniting Pulverized Coal entrance, and 3 be current equalizer, and 4 be igniting combustion supporting wind entrance, 5
It is secondary air bellow for main Pulverized Coal entrance, 6,7 be Secondary Air entrance, and 8 be burning torch, and 9 be igniting gun carriage, and 10 be igniting
Combustion barrel, 101 be supporting lug, and 11 be Secondary Air swirl vane, and 12 be thermocouple, and 13 be burning cavity, and 131 be through-hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It adjusts the object of the present invention is to provide a kind of big than coal burner, it is of the existing technology to solve the problems, such as, make
Coal burner does not need to put into auxiliary fuel and do not need increase igniter that adjustable range can be improved.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figure 1-3, the present invention provides, one kind is big to be adjusted than coal burner, including burner body 1, burner sheet
Body 1 it is interior it is intracavitary be provided with burning cavity 13, ignition cylinder 10 is provided in burning cavity 13,10 both ends of ignition cylinder are equal
It is connected to the inner cavity of burning cavity 13, is provided with the first ventilation between 10 outer wall of ignition cylinder and the internal chamber wall of burning cavity 13
Ring cavity, is provided with the second ventilation ring cavity between 13 outer wall of burning cavity and the internal chamber wall of burner body 1, burning cavity 13 it is upper
Side is provided with igniting combustion supporting wind entrance 4, and igniting combustion supporting wind entrance 4 is connected by the first ventilation ring cavity and ignition cylinder 10
It is logical.The left end of burning cavity 13 connects ignition coal powder fuel entrance 2, the inner cavity of light a fire Pulverized Coal entrance 2 and burning cavity 13
It is connected to, is provided with burning torch 8 in burning cavity 13, the muzzle of burning torch 8 is located in ignition cylinder 10, burner body 1
Lower section is provided with main Pulverized Coal entrance 5, and main Pulverized Coal entrance 5 passes through the second ventilation ring cavity and combustion chamber.Combustion
Burner ontology 1 is externally connected with secondary air bellow 6, is provided with Secondary Air entrance 7 on secondary air bellow 6, Secondary Air entrance 7 with it is described
Combustion chamber.The combustion chamber is located at the outlet port of ignition cylinder 10.Ignition cylinder 10 is for Pulverized Coal of lighting a fire
The combustion space of setting guarantees that igniting Pulverized Coal and igniting combustion supporting wind stablize burning, improves burn-off rate.Igniting combustion supporting wind passes through
The first ventilation ring cavity inlet point fire combustion barrel 10 participates in burning；The setting of the first ventilation ring cavity can be not only dress
Heat dissipation is set, service using life is improved, and can preheat simultaneously to the igniting combustion supporting wind being passed through, ensure that coal dust firing
Stability and burning adequacy.The second ventilation ring cavity preheats the main Pulverized Coal passed through in it, improves main coal
The stability and burning adequacy of powder burning.
Burning cavity 13 is fixedly connected with igniting gun carriage 9, burning torch 8 on the inner wall of igniting Pulverized Coal entrance 2
It is fixedly connected on igniting gun carriage 9.Burning torch 8 is torch oil gun or ignition air gun.Gun carriage 9 of lighting a fire is fixed by burning torch 8
At the middle part of burning cavity, make it possible to easily replace burning torch 8.
Burner body 1 is stretched out in the left end of burning cavity 13, and igniting combustion supporting wind entrance 4 and igniting Pulverized Coal entrance 2 are equal
Outside the burner body 1.
The body wall of burning cavity 13 is interlayer wall, and the interlayer wall includes interlayer inner wall and interlayer outer wall, in the interlayer
Third ventilation ring cavity is formed between wall and interlayer outer wall, the interlayer inner wall is arranged far from one end of ignition coal powder fuel entrance 2
Have a through-hole 131, through-hole 131 is connected to the third ventilation ring cavity and the first ventilation ring cavity, igniting combustion supporting wind entrance 4 with it is described
Third ventilation ring cavity connection.Igniting combustion supporting wind is preheated the third ventilation ring is intracavitary, enters described the by through-hole 131
One ventilation ring cavity further preheats igniting combustion supporting wind in the first ventilation ring cavity, then enters back into ignition
Cylinder 10 burns, to improve the stability of coal dust firing.
Current equalizer 3 is provided between igniting Pulverized Coal entrance 2 and burning cavity 13.Current equalizer 3 makes Pulverized Coal of lighting a fire
It participates in burning even into ignition cylinder 10.
It is provided with crack between 1 outer wall of 6 inner wall of secondary air bellow and burner body, is provided with Secondary Air in the crack
Swirl vane 11.Secondary Air passes through from the crack, and the Secondary Air swirl vane 11 in the crack rotates into Secondary Air
Combustion chamber improves the mixing and combustion efficiency of Secondary Air and main Pulverized Coal.
The end of secondary air bellow 6 is provided with end flange, and the end flange is by bolt and is fixedly connected on burning
Flanged joint on 1 outer wall of device ontology.It is convenient that Secondary Air swirl vane 11 is overhauled and replaced.
First ventilation ring is intracavitary to be provided with thermocouple 12.Thermocouple 12 is used to detect the temperature outside igniting combustion barrel 10
Degree.
The outer wall both ends of ignition cylinder 10 are each provided with several supporting lugs 101, and the outer surface of supporting lug 101 is fixed
It is connected to the inner surface of burning cavity 13, inlet channel is reserved between several supporting lugs 101, the inlet channel is described
The communicating passage of first ventilation ring cavity and 10 inner cavity of ignition cylinder.
Ignition cylinder 10 is using ceramics or silicon carbide material, high temperature resistant, resistance to erosion.The length of ignition cylinder 10 is L,
Unit is m, L=C1·Q/A1, wherein C1For constant, value is 3.28~4.92 × 10-4, Q be igniting Pulverized Coal convey wind,
Igniting combustion supporting wind total flow, unit m3/ h, A1For the sectional area of ignition cylinder 10, unit m2；Ignition cylinder 10 exports
Sectional area be A2, unit m2, A2=C2·A1, wherein C2For constant, value is 0.6~0.8.
When burner needs to start, the fuel oil (or combustion gas) of the penetrating of burning torch 8, preheating igniting combustion barrel 10 are first lighted；When
When the detection temperature of thermocouple 12 reaches 600 DEG C~800 DEG C, start to be passed through igniting Pulverized Coal；When the detection temperature of thermocouple 12
When degree reaches 700 DEG C~850 DEG C, cutting igniting fuel oil (or combustion gas).
Igniting Pulverized Coal, the ignition cylinder 10 of preheating is entered by igniting Pulverized Coal entrance 2, with the point after preheating
Fiery combustion air mixes and starts to burn；Igniting Pulverized Coal and combustion air have adequately in the higher ignition cylinder 10 of temperature
Residence time can guarantee stabilization, the completely burned of coal dust.High-temperature flue gas after burning is fired with partially combusted coal dust from igniting
The spout for burning cylinder 10 sprays, and lights main Pulverized Coal and Secondary Air mixture.Main Pulverized Coal accounts for coal burner whole fuel
90%, can be needed any to adjust from 0~90% according to load.Therefore, big adjusting of the invention can be supported than coal burner
Fire-resistant burner is unstable caused by adjusting, and allows burner arbitrarily to adjust in 10%~100% load range, and a wide range of
It adjusts in operation completely without auxiliary fuel.Big adjusting of the invention is than coal burner, before not putting into auxiliary fuel
It puts, adjusts than being 10~12.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of big adjusting is than coal burner, including burner body, it is characterised in that：The burner body it is interior intracavitary
Be provided with burning cavity, be provided with ignition cylinder in the burning cavity, ignition cylinder both ends with the burning
The inner cavity of cavity is connected to, and is provided with the first ventilation ring between the ignition drum outer wall and the internal chamber wall of the burning cavity
Chamber is provided with the second ventilation ring cavity, the combustion chamber between the burning cavity outer wall and the internal chamber wall of the burner body
Igniting combustion supporting wind entrance is provided with above body, the igniting combustion supporting wind entrance passes through the first ventilation ring cavity and the igniting
Combustion barrel connection；
The left end of the burning cavity connects ignition coal powder fuel entrance, the igniting Pulverized Coal entrance and the burning cavity
Inner cavity connection, be provided with burning torch in the burning cavity, the muzzle of the burning torch is located in the ignition cylinder, institute
It states and is provided with main Pulverized Coal entrance below burner body, the main Pulverized Coal entrance passes through the second ventilation ring cavity
With combustion chamber, the combustion chamber is located at the outlet port of the ignition cylinder；
The burner body is externally connected with secondary air bellow, is provided with Secondary Air entrance on the secondary air bellow, and described two
Secondary wind entrance and the combustion chamber.
2. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The burning cavity is close to the point
Igniting gun carriage is fixedly connected on the inner wall of kindling powder fuel entrance, the burning torch is fixedly connected on the igniting gun carriage
On.
3. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The left end of the burning cavity is stretched out
The burner body, the igniting combustion supporting wind entrance and the igniting Pulverized Coal entrance are respectively positioned on outside the burner body
Portion.
4. coal burner is compared in big adjusting according to claim 3, it is characterised in that：The body wall of the burning cavity is folder
Layer wall, the interlayer wall include interlayer inner wall and interlayer outer wall, and third ventilation is formed between the interlayer inner wall and interlayer outer wall
Ring cavity, the interlayer inner wall are provided with through-hole far from one end of the igniting Pulverized Coal entrance, the through-hole connection described the
Three ventilation ring chambers and the first ventilation ring cavity, the igniting combustion supporting wind entrance are connected to third ventilation ring cavity.
5. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The igniting Pulverized Coal entrance with
Current equalizer is provided between the burning cavity.
6. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The secondary air bellow inner wall and institute
It states and is provided with crack between burner body outer wall, Secondary Air swirl vane is provided in the crack.
7. coal burner is compared in big adjusting according to claim 6, it is characterised in that：The end of the secondary air bellow is set
It is equipped with end flange, the end flange passes through bolt and the flanged joint being fixedly connected on the burner body outer wall.
8. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The intracavitary setting of first ventilation ring
There is thermocouple.
9. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The outer wall two of the ignition cylinder
End is each provided with several supporting lugs, and the outer surface of the supporting lug is fixedly connected on the inner surface of the burning cavity, if
It does and is reserved with inlet channel between the supporting lug, the inlet channel is the first ventilation ring cavity and the ignition
The communicating passage of cylinder.
10. coal burner is compared in big adjusting according to claim 1, it is characterised in that：The ignition cylinder is ceramics
Or silicon carbide material, the length of the ignition cylinder is L, and unit m meets L=C1·Q/A1, wherein C1For constant, value
It is 3.28~4.92 × 10-4, Q is that igniting Pulverized Coal conveys wind, igniting combustion supporting wind total flow, unit m3/ h, A1It is described
The sectional area of ignition cylinder, unit m2；The sectional area of the ignition cylinder outlet is A2, unit m2, A2=C2·A1,
Wherein C2For constant, value is 0.6~0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559015.XA CN108826285B (en) | 2018-06-01 | 2018-06-01 | Large regulating ratio coal powder burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559015.XA CN108826285B (en) | 2018-06-01 | 2018-06-01 | Large regulating ratio coal powder burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108826285A true CN108826285A (en) | 2018-11-16 |
| CN108826285B CN108826285B (en) | 2023-11-03 |
Family
ID=64146879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810559015.XA Active CN108826285B (en) | 2018-06-01 | 2018-06-01 | Large regulating ratio coal powder burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
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| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
| CN111023148B (en) * | 2020-01-14 | 2024-06-07 | 薛芳 | Adjustable screw type multi-stage oil-free coal powder igniter |
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