CN207378831U - Depth peak regulation combines steady burning burner - Google Patents
Depth peak regulation combines steady burning burner Download PDFInfo
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- CN207378831U CN207378831U CN201721106726.9U CN201721106726U CN207378831U CN 207378831 U CN207378831 U CN 207378831U CN 201721106726 U CN201721106726 U CN 201721106726U CN 207378831 U CN207378831 U CN 207378831U
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Abstract
The utility model is related to technical field of boiler combustion, particularly disclose 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 end 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 utility model is simple in structure, stable, is conducive 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 conducive to energy conservation and environmental protection.
Description
（One）Technical field
The utility model is related 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 world
First, the new energy such as one side wind-powered electricity generation and photovoltaic are to we provide a large amount of clean electric powers；On the other hand, generated output with
Also the safe operation to electric system and supply of electric power guarantee bring huge challenge for machine and unstability.
From the point of view of present case, China's electric system regulating power is difficult to adapt to new energy extensive development completely and disappear
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 motor group flexibility deficiency, can not meet new energy high speed development to electric system tune
The requirement of energy saving 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 the notice for assigning thermoelectricity flexibility transformation pilot project》, 16 coal power stations such as Dandong Power Plant are determined as
Thermoelectricity flexibility transformation pilot project is promoted, to accelerate energy technology innovation, by coal electricity Transformation of Unit, excavating coal burning machine
Group peak regulation potentiality, discharge its potential flexibility, effectively improve China's electric 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 single branch is contributed as 2t/h.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, 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 generally 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 to stablize burning in stove during depth peak regulation, peak regulation climbing is extended
Time；Boiler start/ stop process need to slowly be adjusted according to design increasing temperature and pressure curve, be taken longer.
（Three）The content of the invention
The utility model in order to make up for the deficiencies of the prior art, provides a kind of simple in structure, stable, energy conservation and environmental protection
Depth peak regulation combination steady burning burner.
The utility model is achieved by the following technical solution：
A kind of depth peak regulation combines steady burning burner, includes the coal powder pre-burning room of horizontally disposed connection burner hearth, and feature exists
In：Coal powder pre-burning room end is provided with an air compartment, is communicated with primary air piping on an air compartment and is provided with First air coal
Powder mixture import, First air outside are disposed with the secondary air chamber being coaxial therewith, and First air chamber interior is axial arranged oily combustion
Burn cylinder；Coal powder pre-burning outside is provided with tertiary chamber, tertiary chamber connection burner hearth.
The utility model configures an oil firing cylinder, and oil gun atomizing type is mechanical atomization, and oil gun processing is designed as 60KG/
H, oil firing cylinder are lighted in advance, and coal dust firing stablizes backed off after random in band coal powder pre-burning room.
The more excellent technical solution of the utility model is：
Wind inlet three times is provided on the tertiary chamber, tertiary chamber is purged by the two-stage on the side wall of coal powder pre-burning room
Air port connection coal powder pre-burning room；A tertiary air part is flowed along coal powder pre-burning chamber outer wall, coal powder pre-burning room is cooled down, one
Divide and enter coal powder pre-burning chamber interior by purging air port, 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 in the secondary air chamber, is provided on 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 in 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 generate 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 utility model is simple in structure, stable, is conducive to boiler at low load stable operation, and it is multiple not throw oily minimum steady combustion
Conjunction can stablize in 0-40%BMCR, and longtime running not accumulated powder, noncoking, later maintenance is less, is conducive to energy conservation and environmental protection.
（Four）Description of the drawings
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the main structure diagram of the utility model；
Fig. 2 is the left view structural representation of the utility model.
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）Specific embodiment
Attached drawing is a kind of specific embodiment of the utility model.The embodiment includes the coal dust of horizontally disposed connection burner hearth
Precombustion chamber 1,1 end of coal powder pre-burning room are provided with an air compartment 5, are communicated with primary air piping on an air compartment 5 and are provided with
First air coal dust intermixture import 10, one time 5 outside of air compartment is disposed with the secondary air chamber 3 being coaxial therewith, 5 inner shaft of air compartment
To being disposed with oil firing cylinder 11；1 outside of coal powder pre-burning room is provided with tertiary chamber 2, and tertiary chamber 2 connects burner hearth；It is described three times
Wind inlet 8 three times are provided on air compartment 2, tertiary chamber 2 purges air port 9 by the two-stage on 1 side wall of coal powder pre-burning room and connects coal
Powder precombustion chamber 1；The coal powder pre-burning room 1 is circle, and is reserved with the angle of flare；Connection coal dust is provided in the secondary air chamber 3
The Secondary Air cyclone 4 of precombustion chamber 1 is provided with secondary air inlet 7 on secondary air chamber 3；Steady combustion is provided in air compartment 5
Bluff body 6, the steady bluff body 6 that fires connect First air coal dust intermixture import 10 and coal powder pre-burning room 1.
The combustion mechanism of the utility model：Coal dust enters coal powder pre-burning room 1, the oil pre-actuated under First air carrying
11 flame ignition of combustion barrel enters burner hearth, and under rotating jet Involving velocity, 1 inner cavity of coal powder pre-burning room is partially formed high-temperature flue gas
Recirculating zone, high-temperature flue gas continue to flow back to recirculating zone, constantly heat First air coal dust intermixture, coal dust intermixture is made to stablize combustion
It burns.Oil firing cylinder 11 exits after coal dust firing is stablized（Throw oil about 15 minutes）, 1 continuous service of coal burner.The utility model
Available for coal unit cold start or low-load combustion-stabilizing.
The installation site of the utility model：Bottom oil gun air compartment.
The system of the utility model is formed：Primary air piping is connected with an air compartment 5 to the last one elbow in burner hearth direction.One
Secondary 5 outside arrangement secondary air chamber 3 of air compartment, secondary air chamber 3 and an air compartment 5 are coaxial；5 axial arranged oil firing in inside of air compartment
Cylinder 11；One time 5 end of air compartment is connected with horizontally disposed coal powder pre-burning room 1.1 outside arrangement tertiary chamber 2 of coal powder pre-burning room, coal dust
Precombustion chamber 1 and tertiary chamber 2 with burner hearth unicom.
The system features of the utility model：
（1）The burner has fires ability compared with strongly self stationary, and the oil gun input short period can exit, in process of coal combustion
Without putting into other combustion-supporting fuel again；
（2）The burner have stronger anti-coking ability, swirl secondary air and three times purging wind can play fine anti-caking
Burnt effect.
The benefit of the utility model：
（1）Load is fired in 0-40%BMCR available for boiler in coal unit depth peak regulation, is made not throw oily minimum steady；
（2）Ignition oil during coal unit cold start or low-load combustion-stabilizing can be reduced, is conducive 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）, feature
It is：The coal powder pre-burning room（1）End 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 on side wall（9）Connect coal
Powder precombustion chamber（1）.
3. depth peak regulation according to claim 1 combines steady burning burner, 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 |
|---|---|---|---|
| CN201721106726.9U CN207378831U (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 |
|---|---|---|---|
| CN201721106726.9U CN207378831U (en) | 2017-08-31 | 2017-08-31 | Depth peak regulation combines steady burning burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207378831U true CN207378831U (en) | 2018-05-18 |
Family
ID=62342532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721106726.9U Expired - Fee Related CN207378831U (en) | 2017-08-31 | 2017-08-31 | Depth peak regulation combines steady burning burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207378831U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504488A (en) * | 2017-08-31 | 2017-12-22 | 华电国际电力股份有限公司山东分公司 | Depth peak regulation combines steady burning burner |
| CN109058959A (en) * | 2018-08-17 | 2018-12-21 | 贵州华电桐梓发电有限公司 | A method of reducing overcritical " W " the flame unit depth peak regulation oil consumption of 600MW |
| CN112484036A (en) * | 2020-10-23 | 2021-03-12 | 西安交通大学 | Stepless peak regulation coupling pyrolysis combustor and combustion system |
-
2017
- 2017-08-31 CN CN201721106726.9U patent/CN207378831U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504488A (en) * | 2017-08-31 | 2017-12-22 | 华电国际电力股份有限公司山东分公司 | Depth peak regulation combines steady burning burner |
| CN109058959A (en) * | 2018-08-17 | 2018-12-21 | 贵州华电桐梓发电有限公司 | A method of reducing overcritical " W " the flame unit depth peak regulation oil consumption of 600MW |
| CN112484036A (en) * | 2020-10-23 | 2021-03-12 | 西安交通大学 | Stepless peak regulation coupling pyrolysis combustor and combustion system |
| CN112484036B (en) * | 2020-10-23 | 2022-06-07 | 西安交通大学 | Stepless peak regulation coupling pyrolysis combustor and combustion system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20180831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |