CN207907228U - Direct-firing coal unit depth peak regulation surely fires system - Google Patents
Direct-firing coal unit depth peak regulation surely fires system Download PDFInfo
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- CN207907228U CN207907228U CN201721421243.8U CN201721421243U CN207907228U CN 207907228 U CN207907228 U CN 207907228U CN 201721421243 U CN201721421243 U CN 201721421243U CN 207907228 U CN207907228 U CN 207907228U
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Abstract
The utility model is related to boiler combustions to utilize technical field, particularly disclose a kind of direct-firing coal unit depth peak regulation and surely fire system.The direct-firing coal unit depth peak regulation surely fires system, including boiler, it is characterised in that：Depth peak regulation combination steady burning burner is disposed in the secondary air chamber of the boiler bottom, depth peak regulation combines the powder inlet of steady burning burner by the outlet of primary air piping connection separator, and separator is mounted on coal pulverizer.The utility model is simple in structure, and by torch oil gun firing coal-dust, oil gun is released after coal dust firing is stablized, and system can continually and steadily be run, and runs not accumulated powder, noncoking, later maintenance is less, is conducive to energy conservation and environmental protection and boiler at low load stable operation.
Description
Technical field
The utility model is related to boiler combustions to utilize technical field, more particularly to a kind of direct-firing coal unit depth peak regulation
Steady combustion system.
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
Machine and unstability also bring huge challenge to the safe operation of electric system and supply of electric power guarantee.
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, it is more than 20% that " three Norths " some areas, which abandon wind and abandon light rate,.And cause it is this seriously abandon wind, abandon light and abandon water ask
The main reason for topic, is still that existing coal motor group flexibility is insufficient, cannot be satisfied new energy high speed development to electric system tune
The requirement of energy saving power.
For the fast development of adaptation new energy, the digestion capability of new energy is improved, on July 4th, 2016, National Energy Board
General Affairs Department issues《About the notice for assigning thermoelectricity flexibility transformation pilot project》, 16 coal power stations such as Dandong Power Plant are determined as
It promotes thermoelectricity flexibility and pilot project is transformed, 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.
The present situation of existing boiler controller system is：Unit capacity 330MW, boiler are Natural Circulation list burner hearth dum boiler, are used
Inverted U arrangement, tangential firing, dry ash extraction, balanced draft, fuel are bituminous coal.Boiler combustion uses equal distribution wind, and 6 primary
Air port, 8 overfiren air ports of alternate arrangement；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 oil most
Low steady combustion load is 35%BMCR.Wind snout of burner bottom of boiler configuration is configured to little oil burner, other 5
Wind snout of layer is configured to low nitrogen coal burner.
The shortcomings that above system, is：Oily minimum steady is not thrown in boiler actual motion and fires load generally in 50%BMCR, depth
Peak modulation capacity is poor, need to be thrown when load is relatively low oil it is combustion-supporting, influence Unit Economic benefit；It is stable in stove to ensure during depth peak regulation
Burning extends the peak regulation climbing time；Boiler start/ stop process need to slowly be adjusted according to design increasing temperature and pressure curve, be taken longer.
Invention content
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
Direct-firing coal unit depth peak regulation surely fire system.
The utility model is achieved by the following technical solution：
A kind of direct-firing coal unit depth peak regulation surely fires system, including boiler, it is characterised in that：The boiler bottom
Be disposed in secondary air chamber depth peak regulation combination steady burning burner, depth peak regulation combination steady burning burner powder inlet pass through it is primary
Air hose connects the outlet of separator, and separator is mounted on coal pulverizer.
The utility model configurable deep peak regulation in the secondary air chamber of boiler combines steady burning burner, and raw coal is ground through coal pulverizer
Powder is made, is directly carried to depth peak regulation by First air and combines steady burning burner, coal dust stablizes burning in burner, to realize
Coal unit cold conditions is pneumatic or low-load combustion-stabilizing.
The more excellent technical solution of the utility model is：
The depth peak regulation combination steady burning burner, separator and coal pulverizer are connected in parallel independent control system, with reality
Now surely combustion system automation management.
The depth peak regulation combination steady burning burner is be distributed in secondary air chamber symmetric position four, on coal pulverizer side by side
Two separators are installed, each separator is connected in parallel two depth peak regulation combination steady burning burners.
The primary air piping is connected to the last one elbow of boiler direction on depth peak regulation combination steady burning burner.
The utility model is simple in structure, and by torch oil gun firing coal-dust, oil gun is released after coal dust firing is stablized, system energy
Continual and steady operation, runs not accumulated powder, noncoking, and later maintenance is less, is conducive to energy conservation and environmental protection and boiler at low load stablizes fortune
Row, not throwing oily minimum steady combustion load can stablize in 0-40%BMCR.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model.
In figure, 1 boiler, 2 depth peak regulations combine steady burning burner, 3 coal pulverizers, 4 separators, 5 primary air pipings, 6 control systems
System.
Specific implementation mode
Attached drawing is a kind of specific embodiment of the utility model.The embodiment includes boiler 1, and the two of 1 bottom of the boiler
Be disposed in secondary air compartment depth peak regulation combination steady burning burner 2, depth peak regulation combination steady burning burner 2 powder inlet pass through it is primary
Air hose 5 connects the outlet of separator 4, and separator 4 is mounted on coal pulverizer 3.
The utility model is described as follows：
1. the course of work：The utility model configurable deep peak regulation combines steady burning burner 2, and raw coal is milled into through coal pulverizer 3
Powder is directly carried to depth peak regulation by primary air piping 5 and combines steady burning burner 2, and coal dust stablizes burning in burner 2, with reality
Existing coal unit cold start or low-load combustion-stabilizing.
2. installation site：Boiler 1 is connected to burner hearth lowest level secondary air chamber to powder system device.
3. system is constituted：
（1）The utility model configures four depth peak regulations and combines steady burning burner 2, and burner 2 is arranged in 1 bottom of boiler
In secondary air chamber；
（2）The utility model configures a set of independent powder-supply system, to give depth peak regulation to combine 2 powder supply of steady burning burner.Coal
Powder is derived from the outlet of the separator 4 on coal pulverizer 3, is transported to burner 2 by primary air piping 5 and burns；
（3）The utility model configures autonomous control system 6, to realize steady combustion system automation management.
4. system features
（1）The utility model has stronger boiler low load stable combustion ability, and the configured oil gun input short period can
It exits, system no longer needs to put into other combustion-supporting fuel during putting into operation；
（2）The utility model has stronger anti-coking ability, can run steadily in the long term.
5. the benefit of this technology invention
（1）It can be used in coal unit depth peak regulation, so that boiler is not thrown oily minimum steady and fire load in 0-40%BMCR；
（2）Ignition oil during coal unit cold start or low-load combustion-stabilizing can be reduced, is conducive to improve Unit Economic
Benefit.
Claims (4)
1. a kind of direct-firing coal unit depth peak regulation surely fires system, including boiler（1）, it is characterised in that：The boiler（1）Bottom
Depth peak regulation combination steady burning burner is disposed in the secondary air chamber of layer（2）, depth peak regulation combination steady burning burner（2）Into powder
Mouth passes through primary air piping（5）Connect separator（4）Outlet, separator（4）Mounted on coal pulverizer（3）On.
2. direct-firing coal unit depth peak regulation according to claim 1 surely fires system, it is characterised in that：The depth tune
Combine steady burning burner in peak（2）, separator（4）And coal pulverizer（3）It is connected in parallel independent control system（6）.
3. direct-firing coal unit depth peak regulation according to claim 1 surely fires system, it is characterised in that：The depth tune
Combine steady burning burner in peak（2）To be distributed in four of secondary air chamber symmetric position, coal pulverizer（3）Upper two separation of installation side by side
Device（4）, each separator（4）It is connected in parallel two depth peak regulation combination steady burning burners（2）.
4. direct-firing coal unit depth peak regulation according to claim 1 surely fires system, it is characterised in that：The First air
Pipe（5）To boiler（1）The last one elbow of direction is connected to depth peak regulation combination steady burning burner（2）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421243.8U CN207907228U (en) | 2017-10-31 | 2017-10-31 | Direct-firing coal unit depth peak regulation surely fires system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421243.8U CN207907228U (en) | 2017-10-31 | 2017-10-31 | Direct-firing coal unit depth peak regulation surely fires system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207907228U true CN207907228U (en) | 2018-09-25 |
Family
ID=63570659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721421243.8U Active CN207907228U (en) | 2017-10-31 | 2017-10-31 | Direct-firing coal unit depth peak regulation surely fires system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207907228U (en) |
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2017
- 2017-10-31 CN CN201721421243.8U patent/CN207907228U/en active Active
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