CN205678667U - A kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system - Google Patents
A kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system Download PDFInfo
- Publication number
- CN205678667U CN205678667U CN201620223205.0U CN201620223205U CN205678667U CN 205678667 U CN205678667 U CN 205678667U CN 201620223205 U CN201620223205 U CN 201620223205U CN 205678667 U CN205678667 U CN 205678667U
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- CN
- China
- Prior art keywords
- air
- burner
- tertiary
- enriched combusting
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 51
- 239000001301 oxygen Substances 0.000 title claims abstract description 51
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 239000002817 coal dust Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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 relates to field of combustion equipment, disclose a kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system, this burner includes primary air piping (10), the secondary air channel (20) being set in outside primary air piping and the tertiary-air pipe (30) being set in outside secondary air channel, and the air inlet (31) of tertiary-air pipe can open and close.This programme can enable burner successfully to switch to oxygen-enriched combusting from air burning by closing the air inlet of tertiary-air pipe, and now the air quantity needed for oxygen-enriched combusting is all provided by primary air piping and secondary air channel, to ensure the stability of flame.Generally, air burning and the primary air flow needed for oxygen-enriched combusting are more or less the same, and required secondary air flow differs relatively big, and therefore air quantity and the wind speed of tertiary-air pipe can be designed according to the parameter of air burning in actual applications.It is of course also possible to enable burner successfully to switch to air burning from oxygen-enriched combusting by opening the air inlet of tertiary-air pipe.
Description
Technical field
The utility model relates to combustion apparatus, in particular it relates to a kind of burner taking into account oxygen-enriched combusting and air burning
And boiler combustion system.
Background technology
With the development of technology, oxygen-enriched combustion technology, as a kind of important carbon dioxide capture technology, receives more next
(so-called oxygen-enriched combustion technology is on the basis of existing coal-fired power generator set, with oxygen and the dioxy of proper proportion in more concerns
Change carbon mix and replace air, use burning and the heat-transfer character of flue gas recirculation regulation boiler, to obtain the two of high concentration simultaneously
Carbonoxide flue gas, is purified by condensation compression, it is achieved carbon dioxide enriched a kind of combustion technology with storage on a large scale).
At present, due to oxygen-enriched combusting needing to utilize circulating flue gas when, therefore, usually, boiler first has to carry out air gas
Burning (i.e. air burning) under atmosphere produces certain flue gas, then switches to oxygen-enriched combusting.Certainly, under oxygen-enriched operating mode, also
Can be from adjacent platform boiler extraction circulating flue gas.
But, owing to, in air burning, the oxygen of only 21% participates in burning, remaining air of 79% is simultaneously not involved in burning,
But discharge with the form of flue gas, and in oxygen-enriched combusting, due to the content of oxygen more than 21% (usually oxygen concentration >
26%), therefore, the required during such oxygen-enriched combusting total blast volume total blast volume more required than during air burning is few, so from sky
After gas firing is switched to oxygen-enriched combusting, the air quantity in primary zone and wind speed all can reduce, thus combustion flame can be caused unstable,
Flame profile and radiant heat transfer effect will change a lot, and boiler is difficult to safe and stable operation.
Utility model content
The purpose of this utility model is to provide a kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system
System, fast successfully can switch between oxygen-enriched combusting operating mode and air burning operating mode.
To achieve these goals, the utility model provides a kind of burner taking into account oxygen-enriched combusting and air burning, should
Burner includes primary air piping, the secondary air channel being set in outside described primary air piping and be set in outside described secondary air channel three
Secondary airduct, the air inlet of described tertiary-air pipe can open and close.
Preferably, described tertiary-air pipe is reducer pipe, and along the direction of the spout near described burner, described three times
The diameter of airduct is gradually increased.
Preferably, the size of the air inlet of described tertiary-air pipe is adjustable.
Preferably, the air inlet of described tertiary-air pipe is multiple and sets along the periphery wall circumference of described tertiary-air pipe respectively
Put.
Preferably, described secondary air channel is provided with the first leaf moving along the central axial direction of this secondary air channel
Piece cyclone.
Preferably, described tertiary-air pipe is fixed with the second vane swirler.
Preferably, it is provided with the central tube for installing torch oil gun, the periphery of described central tube in described primary air piping
It is provided with the flow-disturbing part for disturbance First air on wall.
Preferably, described primary air piping, secondary air channel, tertiary-air pipe and central tube are arranged concentrically.
Preferably, the part of the spout of the close described burner of described primary air piping and secondary air channel is enlarging shape.
The utility model also provides a kind of boiler combustion system, and this boiler combustion system includes boiler and coal pulverizer, described
Boiler combustion system takes into account the burner of oxygen-enriched combusting and air burning described in including, described burner is arranged at described boiler
Burner hearth entrance, the outlet of described coal pulverizer connects with the described primary air piping of described burner.
In the utility model, can enable burner successfully from air by closing the air inlet of tertiary-air pipe
Burning switches to oxygen-enriched combusting, and now the air quantity needed for oxygen-enriched combusting is all provided by primary air piping and secondary air channel, thus protects
Demonstrate,prove the stability of flame.It is true that through checking, usually, the primary air flow needed for air burning and oxygen-enriched combusting differs
Seldom, and required secondary air flow differs that bigger (secondary air flow needed for oxygen-enriched combusting is than the secondary needed for air burning
Air quantity is a lot of less), therefore air quantity and the wind speed of tertiary-air pipe can set according to the parameter of air burning in actual applications
Meter.It is of course also possible to enable burner successfully to switch to sky from oxygen-enriched combusting by opening the air inlet of tertiary-air pipe
Gas firing, now the tertiary air in tertiary-air pipe can use as the burnout degree of burner.
Other features and advantages of the utility model will be described in detail in detailed description of the invention part subsequently.
Brief description
Accompanying drawing is used to provide and is further appreciated by of the present utility model, and constitutes a part for specification, and following
Detailed description of the invention be used for explaining the utility model together, but be not intended that to restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the knot of the burner taking into account oxygen-enriched combusting and air burning that detailed description of the invention of the present utility model provides
Structure schematic diagram.
Description of reference numerals
10: primary air piping；20: secondary air channel；
30: tertiary-air pipe；31: air inlet；
40: central tube；50: the second vane swirler；
60: the first vane swirler；70: flow-disturbing part.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that herein
Described detailed description of the invention is merely to illustrate and explains the utility model, is not limited to the utility model.
In the utility model, in the case of illustrating on the contrary, the noun of locality of use such as " upper and lower, left and right " is usual
Refer to reference to upper and lower, left and right shown in the drawings；It is inside and outside that " inside and outside " refers to relative to the profile of each parts itself.
In boiler combustion system, owing to oxygen-enriched combusting is different with the total blast volume needed for air burning, thus cause existing
Burner in technology successfully can not switch between oxygen-enriched combusting and air burning, and in view of this, the utility model carries
For a kind of burner that successfully can switch between oxygen-enriched combusting and air burning, new to this practicality hereinafter with reference to accompanying drawing
Type provide take into account oxygen-enriched combusting and the burner of air burning is described in detail.
As it is shown in figure 1, the utility model provide take into account oxygen-enriched combusting and the burner of air burning includes primary air piping
10th, the secondary air channel 20 being set in outside primary air piping 10 and the tertiary-air pipe 30 being set in outside secondary air channel 20, described three times
The air inlet 31 of airduct 30 can open and close, for example, it is possible to arrange valve near air inlet 31, thus realizes air inlet
The opening and closing of 31.And the central axis of air inlet 31 can be perpendicular to the central axis of tertiary-air pipe 30, certainly also may be used
It is obliquely installed with the central axis relative to tertiary-air pipe 30.
In the utility model, can by close tertiary-air pipe 30 air inlet 31 and enable burner successfully from
Air burning switches to oxygen-enriched combusting, and now the air quantity needed for oxygen-enriched combusting is all carried by primary air piping 10 and secondary air channel 20
Confession, thus ensure that the stability of flame.It is true that through checking, usually, needed for air burning and oxygen-enriched combusting once
Air quantity is more or less the same, and required secondary air flow differs, and bigger (secondary air flow needed for oxygen-enriched combusting is than air burning institute
The secondary air flow needing is a lot of less), therefore air quantity and the wind speed of tertiary-air pipe 30 can be according to air burnings in actual applications
Parameter is designed.It is of course also possible to enable burner successfully from richness by opening the air inlet 31 of tertiary-air pipe 30
Oxygen burning switches to air burning, and now the tertiary air in tertiary-air pipe 30 can use as the burnout degree of burner.
Wherein, described tertiary-air pipe 30 is reducer pipe, and along the direction of the spout near burner, described tertiary-air pipe
The diameter of 30 is gradually increased.Specifically, owing to tertiary-air pipe 30 effect is to use under the pattern of air burning, therefore tertiary air
The size of pipe 30 can be designed according to parameters such as air quantity during air burning and wind speed.
In order to make described burner can adapt to different situations, the size of the air inlet 31 of described tertiary-air pipe 30 is can
Regulation.When the secondary air flow that air burning operating mode needs is more, it is corresponding big that this air inlet 31 can be regulated, and works as air
When secondary air flow that combustion conditions needs is less, can accordingly air inlet 31 be turned down, steady with combustion flame in ensureing burner hearth
Fixed.
Certainly, the air inlet 31 of described tertiary-air pipe 30 can be multiple, and the plurality of air inlet 31 is respectively along tertiary-air pipe
The periphery wall of 30 is circumferentially disposed, it is preferable that multiple air inlets 31 are evenly provided on the periphery wall of tertiary-air pipe 30.In reality
In application, the part in multiple air inlet 31 can be made to open according to actual conditions, another part is closed, such that it is able to adjust
Joint intake, it is of course also possible to make multiple air inlet 31 all open, is arranged on opening of the valve near air inlet 31 by control
Degree, thus regulate intake.In addition, in order to simplify structure, reduce cost, tertiary-air pipe 3 is preferably provided at the spray of burner
Near Kou.
Further, described secondary air channel 20 is provided with moving along the central axial direction of this secondary air channel 20
First vane swirler 60 such that it is able to produce swirl secondary air in secondary air channel 20, produce backflow at flame kernel simultaneously
District, to strengthen the burning of coal dust and supplementary oxygen amount.It is of course also possible to by the mobile side changing above-mentioned first vane swirler 60
To, thus change the swirl strength of the blade of the first vane swirler 60, specifically, when needs swirl strength is less, make
One vane swirler 60 moves to the direction away from burner nozzle；When needs swirl strength is bigger, make the first vane cyclone
Device 60 moves to the direction near burner nozzle.It is of course also possible to fix the second vane swirler 50 in tertiary-air pipe 30,
It is thus possible to produce eddy flow in tertiary-air pipe 30.
It in order to accelerate the disturbance of gas in primary air piping 10, is provided with for installing torch oil gun in described primary air piping 10
Central tube 40, the periphery wall of described central tube 40 is provided with flow-disturbing part 70 such that it is able to make the coal dust in primary air piping 10
Form the distribution form of " outer dense interior light ".Specifically, flow-disturbing part 70 is run into when First air carries after coal dust enters primary air piping 10
When, the flow direction of a part of First air can be changed, i.e. make this part First air be further continued for burner after walking around flow-disturbing part 70
Spout flowing so that the coal powder density of the position of close the flow-disturbing part 70 in primary air piping 10 be less than away from flow-disturbing part 70
The concentration put.
Wherein, described primary air piping the 10th, secondary air channel the 20th, tertiary-air pipe 30 and central tube 40 can be arranged concentrically.Separately
Outward, can by the part of the spout of the close burner of primary air piping 10 and secondary air channel 20 is set to enlarging shape, thus
The shape of control flame.
According to another aspect of the present utility model, the utility model also provides a kind of boiler combustion system, and this boiler fires
Burning system includes boiler and coal pulverizer, and wherein, described boiler combustion system includes above-mentioned taking into account oxygen-enriched combusting and air burning
Burner, described burner is arranged at the burner hearth entrance of described boiler, and the outlet of described coal pulverizer is with described burner once
Airduct 10 connects, so that the First air in primary air piping 1 can carry coal dust and enter in burner hearth.It is to be understood that
Primary air piping the 10th, secondary air channel 20 all connects with the burner hearth of boiler with tertiary-air pipe 30, with can be by primary air piping 10
Secondary Air in secondary wind, secondary air channel 20 and the tertiary air in tertiary-air pipe 30 are sent in burner hearth.
Describe preferred embodiment of the present utility model above in association with accompanying drawing in detail, but, the utility model does not limit
Detail in above-mentioned embodiment, in technology concept of the present utility model, can be to skill of the present utility model
Art scheme carries out multiple simple variant, and these simple variant belong to protection domain of the present utility model.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is to respectively
Plant possible combination no longer to illustrate separately.
Additionally, also can be combined, as long as it is not disobeyed between various different embodiment of the present utility model
Carrying on the back thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. the burner taking into account oxygen-enriched combusting and air burning, it is characterised in that this burner include primary air piping (10),
It is set in the outer secondary air channel (20) of described primary air piping (10) and be set in described secondary air channel (20) tertiary-air pipe outward
(30), the air inlet (31) of described tertiary-air pipe (30) can open and close；
It is provided with the central tube (40) for installing torch oil gun, the periphery of described central tube (40) in described primary air piping (10)
It is provided with the flow-disturbing part (70) for disturbance First air on wall.
2. the burner taking into account oxygen-enriched combusting and air burning according to claim 1, it is characterised in that described tertiary air
Pipe (30) is reducer pipe, and along the direction of the spout near described burner, the diameter of described tertiary-air pipe (30) gradually increases
Greatly.
3. the burner taking into account oxygen-enriched combusting and air burning according to claim 1, it is characterised in that described tertiary air
The size of the air inlet (31) of pipe (30) is adjustable.
4. the burner taking into account oxygen-enriched combusting and air burning according to claim 1, it is characterised in that described tertiary air
The air inlet (31) of pipe (30) is multiple and circumferentially disposed along the periphery wall of described tertiary-air pipe (30) respectively.
5. the burner taking into account oxygen-enriched combusting and air burning according to any one in claim 1-4, its feature exists
In, described secondary air channel (20) is provided with along the central axial direction of this secondary air channel (20) move first blade rotation
Stream device (60).
6. the burner taking into account oxygen-enriched combusting and air burning according to claim 5, it is characterised in that described tertiary air
Pipe (30) is fixed with the second vane swirler (50).
7. the burner taking into account oxygen-enriched combusting and air burning according to claim 5, it is characterised in that described once
Airduct (10), secondary air channel (20), tertiary-air pipe (30) and central tube (40) are arranged concentrically.
8. the burner taking into account oxygen-enriched combusting and air burning according to claim 5, it is characterised in that described First air
The part of the spout of the close described burner of pipe (10) and secondary air channel (20) is enlarging shape.
9. a boiler combustion system, this boiler combustion system includes boiler and coal pulverizer, it is characterised in that described boiler combustion
System includes the burner taking into account oxygen-enriched combusting and air burning in claim 1-8 described in any one, described burner
Being arranged at the burner hearth entrance of described boiler, the outlet of described coal pulverizer connects with the described primary air piping (10) of described burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620223205.0U CN205678667U (en) | 2016-03-22 | 2016-03-22 | A kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620223205.0U CN205678667U (en) | 2016-03-22 | 2016-03-22 | A kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205678667U true CN205678667U (en) | 2016-11-09 |
Family
ID=57437776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620223205.0U Active CN205678667U (en) | 2016-03-22 | 2016-03-22 | A kind of burner taking into account oxygen-enriched combusting and air burning and boiler combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205678667U (en) |
-
2016
- 2016-03-22 CN CN201620223205.0U patent/CN205678667U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |