CN107726322A - First air eddy flow depth peak regulation combines steady burning burner - Google Patents
First air eddy flow depth peak regulation combines steady burning burner Download PDFInfo
- Publication number
- CN107726322A CN107726322A CN201711041997.5A CN201711041997A CN107726322A CN 107726322 A CN107726322 A CN 107726322A CN 201711041997 A CN201711041997 A CN 201711041997A CN 107726322 A CN107726322 A CN 107726322A
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- China
- Prior art keywords
- air
- burning
- burner
- coal powder
- powder pre
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- 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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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/007—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel liquid or pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2204/00—Burners adapted for simultaneous or alternative combustion having more than one fuel supply
- F23D2204/30—Burners adapted for simultaneous or alternative combustion having more than one fuel supply liquid and pulverulent fuel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The present invention relates to technical field of boiler combustion, particularly discloses a kind of First air eddy flow depth peak regulation combination steady burning burner.The First air eddy flow depth peak regulation combines steady burning burner, is included in primary air piping to the air compartment connected on last elbow in burner hearth direction, it is characterised in that：Air compartment end is connected with horizontally disposed coal powder pre-burning room, and First air chamber interior is axially installed with the oil firing cylinder of connection coal powder pre-burning room, and coal powder pre-burning outside arrangement secondary air chamber, coal powder pre-burning room and secondary air chamber connect with burner hearth；The First air cyclone of connection coal powder pre-burning room is provided with First air room.The present invention is simple in construction, and longtime running not accumulated powder, noncoking, later maintenance is less, carries torch oil gun, and the coal dust oil gun after flameholding that puts into operation is released, and coal burner can continually and steadily be run.
Description
（One）Technical field
The present invention relates to technical field of boiler combustion, more particularly to a kind of First air eddy flow depth peak regulation combination steady burning burner.
（Two）Background technology
In recent years, China's wind-powered electricity generation and photovoltaic installation scale rapidly increase, it is in-service and build installed capacity oneself occupy the first in the world,
The new energy such as one side wind-powered electricity generation and photovoltaic is to we provide a large amount of clean electric powers；On the other hand, the randomness of its generated output
Huge challenge is brought with safe operation and supply of electric power guarantee of the unstability also to power system.
From the point of view of present case, China's power system regulating power is difficult to adapt to new energy extensive development completely and disappeared
More serious abandoning wind, abandon light and abandoning water problems occur in the requirement received, some areas.2015, whole year abandoned wind-powered electricity generation amount and is up to
33900000000 kilowatt hours, " three Norths " some areas abandon wind and abandon light rate more than 20%.And cause it is this seriously abandon wind, abandon light and abandon water ask
The main reason for topic, is still existing coal group of motors flexibility deficiency, can not meet that new energy high speed development is adjusted to power system
Save the requirement of power.
To adapt to the fast development of new energy, the digestion capability of new energy, on July 4th, 2016, national energy are improved
The issue of General Affairs Department of office《On assigning the notice of thermoelectricity flexibility transformation pilot project》, 16 coal power stations such as Dandong Power Plant are determined
Pilot project is transformed for lifting thermoelectricity flexibility, to accelerate energy technology innovation, by transforming coal group of motors, is excavated coal-fired
Peak load regulation potentiality, its potential flexibility is discharged, effectively improve China's power system regulating power, promote China's high efficiency smart
Power system construction.
In the prior art, boiler controller system capacity 330MW, boiler is Natural Circulation list burner hearth dum boiler, using inverted U cloth
Put, tangential firing, dry ash extraction, balanced draft, fuel is bituminous coal.Boiler combustion uses equal distribution wind, 6 primary air nozzles, phase
Between arrange 8 overfiren air ports；Two big oil guns are arranged at each angle, and it is 2t/h that single branch, which is contributed,.Boiler design does not throw oily minimum steady combustion
Load is 35%BMCR.Wind snout of burner bottom of boiler configuration is configured to little oil burner, and other 5 layers once
Wind snout is configured to low nitrogen coal burner.
At present, oily minimum steady is not thrown in boiler actual motion and fires load typically in 50%BMCR, depth peak modulation capacity is poor, bears
Lotus need to be thrown when relatively low oil it is combustion-supporting, influence Unit Economic benefit；To ensure stable burning in stove during depth peak regulation, tune is extended
Climb the time at peak；Boiler start/ stop process need to slowly adjust according to design increasing temperature and pressure curve, take longer.
（Three）The content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided a kind of First air simple in construction, stable, energy-conserving and environment-protective
Eddy flow depth peak regulation combines steady burning burner.
The present invention is achieved through the following technical solutions：
A kind of First air eddy flow depth peak regulation combines steady burning burner, be included in primary air piping to burner hearth direction last is curved
The air compartment connected on head, it is characterised in that：Air compartment end is connected with horizontally disposed coal powder pre-burning room, once
It is axially installed with the oil firing cylinder of connection coal powder pre-burning room inside air compartment, coal powder pre-burning outside arrangement secondary air chamber, coal dust is pre-
Combustion room and secondary air chamber connect with burner hearth；The First air cyclone of connection coal powder pre-burning room is provided with First air room.
The present invention configures a set of oil firing cylinder, and oil gun atomizing type is mechanical atomization, and Oil Gun is designed as 60KG/H, oil
Combustion barrel is lighted in advance, treats the stable backed off after random of coal dust firing in coal powder pre-burning room；First air indoor design First air cyclone, one
Secondary wind coal dust intermixture enters coal powder pre-burning room through First air cyclone, is refluxed area's high-temperature flue gas and lights.
The present invention more excellent technical scheme be：
Secondary air inlet is provided with the secondary air chamber, secondary air chamber connects coal powder pre-burning room by purging air port；Secondary Air
A part is flowed along coal powder pre-burning chamber outer wall, and coal powder pre-burning room is cooled down；A part is pre- into coal dust by purging air port
Chamber interior is fired, coal powder pre-burning room is purged step by step.
First air coal dust intermixture import is provided with the primary air piping, coal dust intermixture enters under the carrying of First air
Enter coal powder pre-burning room.
The coal powder pre-burning room is circle, and is reserved with the angle of flare, and coal dust is heated in precombustion chamber recirculating zone and lighted.
It is described to purge two-layer configuration of the air port for front and rear arrangement, realize purging step by step, comprehensively in coal powder pre-burning room.
The present invention is simple in construction, and longtime running not accumulated powder, noncoking, later maintenance is less, carries torch oil gun, and coal dust is thrown
Oil gun is released after transporting flameholding, and coal burner can continually and steadily run, be advantageous to boiler at low load stable operation, not throw oil
Minimum steady combustion is compound can to stablize in 0-40%BMCR.
（Four）Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the main structure diagram of the present invention；
Fig. 2 is the left view structural representation of the present invention.
In figure, 1 coal powder pre-burning room, 2 secondary air chambers, 3 air compartments, 4 First air cyclones, 5 oil firing cylinders, 6 First airs
Coal dust intermixture import, 7 secondary air inlets, 8 purging air ports.
（Five）Embodiment
Accompanying drawing is a kind of specific embodiment of the invention.The embodiment be included in primary air piping to burner hearth direction last is curved
The air compartment 3 connected on head, an air compartment 3 end are connected with horizontally disposed coal powder pre-burning room 1, in an air compartment 3
Portion is axially installed with the oil firing cylinder 5 of connection coal powder pre-burning room 1, the outside of coal powder pre-burning room 1 arrangement secondary air chamber 2, coal powder pre-burning
Room 1 and secondary air chamber 2 connect with burner hearth；The First air cyclone 4 of connection coal powder pre-burning room 1 is provided with air compartment 3.
Secondary air inlet 7 is provided with the secondary air chamber 2, secondary air chamber 2 connects coal powder pre-burning room by purging air port 8
1；First air coal dust intermixture import 6 is provided with the primary air piping；The coal powder pre-burning room 1 is circle, and is reserved with expansion
Subtended angle；The purging air port 8 is the front and rear two-layer configuration arranged.
The combustion mechanism of the present invention：Coal dust enters coal powder pre-burning room 1 under First air carrying with cyclone mode, is opened in advance
The dynamic flame ignition of oil firing cylinder 5 sprays into burner hearth, and under rotating jet Involving velocity, the inner chamber of coal powder pre-burning room 1 is partially formed height
Warm smoke backflow area, high-temperature flue gas continue to flow back to recirculating zone, constantly heat First air coal dust intermixture, make coal dust intermixture steady
Fixed burning.Oil firing cylinder 5 exits after coal dust firing is stable（Throw oil about 15 minutes）, continuous service of the present invention, available for coal burning machine
Group cold start or low-load combustion-stabilizing.
The installation site of the present invention：Bottom oil gun air compartment.
The features of the present invention：
（1）The burner has fires ability compared with strongly self stationary, and the oil gun input short period can exit, need not in process of coal combustion
Other combustion-supporting fuel are put into again；
（2）The burner has stronger anti-coking ability, is swept by secondary purging wind, can play fine anti-coking effect.
The benefit of the present invention：
（1）Load is fired in 0-40%BMCR available in coal unit depth peak regulation, making boiler not throw oily minimum steady；
（2）Ignition oil during coal unit cold start or low-load combustion-stabilizing can be reduced, is advantageous to improve Unit Economic benefit.
Claims (5)
1. a kind of First air eddy flow depth peak regulation combines steady burning burner, be included in primary air piping to burner hearth direction last
The air compartment connected on elbow（3）, it is characterised in that：Air compartment（3）It is pre- that end is connected with horizontally disposed coal dust
Fire room（1）, an air compartment（3）Inside is axially installed with connection coal powder pre-burning room（1）Oil firing cylinder（5）, coal powder pre-burning room（1）
Secondary air chamber is arranged in outside（2）, coal powder pre-burning room（1）And secondary air chamber（2）Connected with burner hearth；Air compartment（3）Interior setting
There is connection coal powder pre-burning room（1）First air cyclone（4）.
2. First air eddy flow depth peak regulation according to claim 1 combines steady burning burner, it is characterised in that：It is described secondary
Air compartment（2）On be provided with secondary air inlet（7）, secondary air chamber（2）By purging air port（8）Connect coal powder pre-burning room（1）.
3. First air eddy flow depth peak regulation according to claim 1 combines steady burning burner, it is characterised in that：It is described once
First air coal dust intermixture import is provided with airduct（6）.
4. First air eddy flow depth peak regulation according to claim 1 combines steady burning burner, it is characterised in that：The coal dust
Precombustion chamber（1）For circle, and it is reserved with the angle of flare.
5. First air eddy flow depth peak regulation according to claim 2 combines steady burning burner, it is characterised in that：The purging
Air port（8）For the two-layer configuration of front and rear arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041997.5A CN107726322A (en) | 2017-10-31 | 2017-10-31 | First air eddy flow depth peak regulation combines steady burning burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041997.5A CN107726322A (en) | 2017-10-31 | 2017-10-31 | First air eddy flow depth peak regulation combines steady burning burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107726322A true CN107726322A (en) | 2018-02-23 |
Family
ID=61202098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711041997.5A Withdrawn CN107726322A (en) | 2017-10-31 | 2017-10-31 | First air eddy flow depth peak regulation combines steady burning burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107726322A (en) |
-
2017
- 2017-10-31 CN CN201711041997.5A patent/CN107726322A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180223 |