CN107504488A - Depth peak regulation combines steady burning burner - Google Patents
Depth peak regulation combines steady burning burner Download PDFInfo
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- CN107504488A CN107504488A CN201710771874.0A CN201710771874A CN107504488A CN 107504488 A CN107504488 A CN 107504488A CN 201710771874 A CN201710771874 A CN 201710771874A CN 107504488 A CN107504488 A CN 107504488A
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- Prior art keywords
- air
- burning
- coal powder
- chamber
- powder pre
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- 239000003245 coal Substances 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000002817 coal dust Substances 0.000 claims abstract description 15
- 238000010304 firing Methods 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims abstract description 8
- 238000010926 purge Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 16
- 230000005611 electricity Effects 0.000 description 4
- 230000003134 recirculating effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 210000004894 snout Anatomy 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- 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 depth peak regulation combination steady burning burner.The depth peak regulation combines steady burning burner, includes the coal powder pre-burning room of horizontally disposed connection burner hearth, it is characterised in that：Coal powder pre-burning room termination is provided with an air compartment, is communicated with primary air piping on an air compartment and is provided with First air coal dust intermixture import, First air outside is disposed with the secondary air chamber being coaxial therewith, and First air chamber interior is axial arranged oil firing cylinder；Coal powder pre-burning outside is provided with tertiary chamber, tertiary chamber connection burner hearth.The present invention is simple in construction, stable, is advantageous to boiler at low load stable operation, does not throw that the combustion of oily minimum steady is compound can to stablize in 0 40%BMCR, and longtime running not accumulated powder, noncoking, later maintenance is less, is advantageous to energy-conserving and environment-protective.
Description
（One）Technical field
The present invention relates to technical field of boiler combustion, more particularly to a kind of 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 Board are improved
General Affairs Department issues《On assigning the notice of thermoelectricity flexibility transformation pilot project》, 16 coal power stations such as Dandong Power Plant are defined as
Thermoelectricity flexibility transformation pilot project is lifted, to accelerate energy technology innovation, by transforming coal group of motors, excavates coal burning machine
Group peak regulation potentiality, discharge its potential flexibility, effectively improve China's power system regulating power, promote China's high efficiency smart electricity
Force 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.
Oily minimum steady is not thrown in boiler actual motion and fires load typically in 50%BMCR, depth peak modulation capacity is poor, and load is relatively low
When need to throw oil it is combustion-supporting, influence Unit Economic benefit；To ensure stable burning in stove during depth peak regulation, peak regulation climbing is extended
Time；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 depth simple in construction, stable, energy-conserving and environment-protective is adjusted
Combine steady burning burner in peak.
The present invention is achieved through the following technical solutions：
A kind of depth peak regulation combines steady burning burner, includes the coal powder pre-burning room of horizontally disposed connection burner hearth, it is characterised in that：
Coal powder pre-burning room termination is provided with an air compartment, is communicated with primary air piping on an air compartment and is provided with First air coal dust and mixes
Compound import, First air outside are disposed with the secondary air chamber being coaxial therewith, and First air chamber interior is axial arranged oil firing cylinder；
Coal powder pre-burning outside is provided with tertiary chamber, tertiary chamber connection burner hearth.
The present invention one oil firing cylinder of configuration, oil gun atomizing type are mechanical atomization, and oil gun processing is designed as 60KG/H, oil
Combustion barrel is lighted in advance, the stable backed off after random of coal dust firing in band coal powder pre-burning room.
The present invention more excellent technical scheme be：
Wind inlet three times is provided with the tertiary chamber, tertiary chamber purges air port by the two-stage in the side wall of coal powder pre-burning room
Connect coal powder pre-burning room；A tertiary air part is flowed along coal powder pre-burning chamber outer wall, and coal powder pre-burning room is cooled down, and a part is logical
Cross purging air port and enter coal powder pre-burning chamber interior, coal powder pre-burning room is purged step by step.
The coal powder pre-burning room is circle, and is reserved with the angle of flare, and coal dust is heated in precombustion chamber and lighted.
The Secondary Air cyclone of connection coal powder pre-burning room is provided with the secondary air chamber, is provided with secondary air chamber secondary
Wind inlet；Secondary Air rotates into coal powder pre-burning room by cyclone, under rotating jet Involving velocity, chamber in coal powder pre-burning room
High temperature gases recirculating area is partially formed, high-temperature flue gas continues to flow back to recirculating zone.
Steady combustion bluff body is provided with the First air room, steady combustion bluff body connection First air coal dust intermixture import and coal dust are pre-
Fire room；Steady combustion bluff body can produce backflow effeet, further strengthen smoke backflow effect, First air coal dust intermixture is through steady combustion bluff body
Area's high-temperature flue gas is refluxed into coal powder pre-burning room to light.
The present invention is simple in construction, stable, is advantageous to boiler at low load stable operation, does not throw oily minimum steady combustion recombination energy
Enough to stablize in 0-40%BMCR, longtime running not accumulated powder, noncoking, later maintenance is less, is advantageous to energy-conserving and environment-protective.
（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 tertiary chambers, 3 secondary air chambers, 4 Secondary Air cyclones, 5 air compartments, 6 surely fire it is blunt
Body, 7 secondary air inlets, 8 wind inlets three times, 9 purging air ports, 10 First air coal dust intermixture imports, 11 oil firing cylinders.
（Five）Embodiment
Accompanying drawing is a kind of specific embodiment of the invention.The embodiment includes the coal powder pre-burning room 1 of horizontally disposed connection burner hearth,
The termination of coal powder pre-burning room 1 is provided with an air compartment 5, is communicated with primary air piping on an air compartment 5 and is provided with First air coal
Powder mixture import 10, an outside of air compartment 5 are disposed with the secondary air chamber 3 being coaxial therewith, and one time the inside of air compartment 5 is axially disposed with
Oil firing cylinder 11；The outside of coal powder pre-burning room 1 is provided with tertiary chamber 2, and tertiary chamber 2 connects burner hearth；Set on the tertiary chamber 2
Wind inlet 8 three times are equipped with, tertiary chamber 2 purges air port 9 by the two-stage in the side wall of coal powder pre-burning room 1 and connects coal powder pre-burning room 1；
The coal powder pre-burning room 1 is circle, and is reserved with the angle of flare；The two of connection coal powder pre-burning room 1 are provided with the secondary air chamber 3
Secondary wind cyclone 4, secondary air inlet 7 is provided with secondary air chamber 3；Steady combustion bluff body 6, steady combustion are provided with air compartment 5
Bluff body 6 connects First air coal dust intermixture import 10 and coal powder pre-burning room 1.
The combustion mechanism of the present invention：Coal dust enters coal powder pre-burning room 1, the oil firing pre-actuated under First air carrying
11 flame ignitions of cylinder enter burner hearth, and under rotating jet Involving velocity, the inner chamber of coal powder pre-burning room 1 is partially formed high temperature gases recirculating
Area, high-temperature flue gas continue to flow back to recirculating zone, constantly heat First air coal dust intermixture, make coal dust intermixture is stable to burn.Coal
Oil firing cylinder 11 exits after powder flameholding（Throw oil about 15 minutes）, the continuous service of coal burner 1.The present invention can be used for fire coal
Unit cold start or low-load combustion-stabilizing.
The installation site of the present invention：Bottom oil gun air compartment.
The system of the present invention is formed：Primary air piping is connected with an air compartment 5 to last elbow in burner hearth direction.First air
The outside of room 5 arrangement secondary air chamber 3, secondary air chamber 3 and an air compartment 5 are coaxial；Axial arranged oil firing cylinder in the inside of air compartment 5
11；One time the end of air compartment 5 is connected with horizontally disposed coal powder pre-burning room 1.The outside of coal powder pre-burning room 1 arrangement tertiary chamber 2, coal dust is pre-
Fire room 1 and tertiary chamber 2 with burner hearth UNICOM.
The system 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, and swirl secondary air and three times purging wind can play fine anti-coking effect
Fruit.
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 depth peak regulation combines steady burning burner, include the coal powder pre-burning room of horizontally disposed connection burner hearth（1）, its feature
It is：The coal powder pre-burning room（1）Termination is provided with an air compartment（5）, an air compartment（5）On be communicated with primary air piping and set
Once wind coal dust intermixture import（10）, an air compartment（5）Outside is disposed with the secondary air chamber being coaxial therewith（3）, First air
Room（5）It is internal to be axially disposed with oil firing cylinder（11）；Coal powder pre-burning room（1）Outside is provided with tertiary chamber（2）, tertiary chamber
（2）Connect burner hearth.
2. depth peak regulation according to claim 1 combines steady burning burner, it is characterised in that：The tertiary chamber（2）On
It is provided with wind inlet three times（8）, tertiary chamber（2）Pass through coal powder pre-burning room（1）Two-stage purging air port in side wall（9）Connect coal
Powder precombustion chamber（1）.
3. the steady combustion combustion chamber of depth peak regulation combination according to claim 1, it is characterised in that：The coal powder pre-burning room（1）
For circle, and it is reserved with the angle of flare.
4. depth peak regulation according to claim 1 combines steady burning burner, it is characterised in that：The secondary air chamber（3）It is interior
It is provided with connection coal powder pre-burning room（1）Secondary Air cyclone（4）, secondary air chamber（3）On be provided with secondary air inlet（7）.
5. depth peak regulation according to claim 1 combines steady burning burner, it is characterised in that：Air compartment（5）It is interior
It is provided with steady combustion bluff body（6）, surely fire bluff body（6）Connect First air coal dust intermixture import（10）With coal powder pre-burning room（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771874.0A CN107504488A (en) | 2017-08-31 | 2017-08-31 | Depth peak regulation combines steady burning burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771874.0A CN107504488A (en) | 2017-08-31 | 2017-08-31 | Depth peak regulation combines steady burning burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107504488A true CN107504488A (en) | 2017-12-22 |
Family
ID=60694594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710771874.0A Pending CN107504488A (en) | 2017-08-31 | 2017-08-31 | Depth peak regulation combines steady burning burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107504488A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259555Y (en) * | 1995-10-18 | 1997-08-13 | 冶金工业部武汉冶金建筑研究所 | Swirl pulverized-fuel pre-combustion chamber combustor |
| CN101093077A (en) * | 2007-05-25 | 2007-12-26 | 清华大学 | Eddy flow powdered coal burner lit up by tiny oil |
| CN101315189A (en) * | 2008-07-03 | 2008-12-03 | 徐州华远燃烧控制工程有限公司 | Graded wind-adjusting low NOX multi-fuel combustion device |
| CN105605560A (en) * | 2015-12-23 | 2016-05-25 | 杭州燃油锅炉有限公司 | Micro-emission pulverized coal combustion system |
| CN205504974U (en) * | 2016-04-01 | 2016-08-24 | 北京佳德昌科技有限责任公司 | Low nitrogen coal burner |
| CN106090902A (en) * | 2016-08-11 | 2016-11-09 | 东方电气集团东方锅炉股份有限公司 | Annular return type brown coal turbulent burner and combustion method |
| CN207378831U (en) * | 2017-08-31 | 2018-05-18 | 华电国际电力股份有限公司山东分公司 | Depth peak regulation combines steady burning burner |
-
2017
- 2017-08-31 CN CN201710771874.0A patent/CN107504488A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259555Y (en) * | 1995-10-18 | 1997-08-13 | 冶金工业部武汉冶金建筑研究所 | Swirl pulverized-fuel pre-combustion chamber combustor |
| CN101093077A (en) * | 2007-05-25 | 2007-12-26 | 清华大学 | Eddy flow powdered coal burner lit up by tiny oil |
| CN101315189A (en) * | 2008-07-03 | 2008-12-03 | 徐州华远燃烧控制工程有限公司 | Graded wind-adjusting low NOX multi-fuel combustion device |
| CN105605560A (en) * | 2015-12-23 | 2016-05-25 | 杭州燃油锅炉有限公司 | Micro-emission pulverized coal combustion system |
| CN205504974U (en) * | 2016-04-01 | 2016-08-24 | 北京佳德昌科技有限责任公司 | Low nitrogen coal burner |
| CN106090902A (en) * | 2016-08-11 | 2016-11-09 | 东方电气集团东方锅炉股份有限公司 | Annular return type brown coal turbulent burner and combustion method |
| CN207378831U (en) * | 2017-08-31 | 2018-05-18 | 华电国际电力股份有限公司山东分公司 | Depth peak regulation combines steady burning burner |
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