CN207247258U - Coal unit depth peak regulation surely fires system - Google Patents
Coal unit depth peak regulation surely fires system Download PDFInfo
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- CN207247258U CN207247258U CN201721108285.6U CN201721108285U CN207247258U CN 207247258 U CN207247258 U CN 207247258U CN 201721108285 U CN201721108285 U CN 201721108285U CN 207247258 U CN207247258 U CN 207247258U
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Abstract
Technical field of boiler combustion is the utility model is related to, a kind of coal unit depth peak regulation is particularly disclosed and surely fires system.The coal unit depth peak regulation surely fires system, including depth peak regulation steady burning burner, it is characterised in that：Primary air piping is connected with the burner hearth of the burner, primary air piping end is connected with row powder fan, air and powder mixer is installed, air and powder mixer connects powder cabin by pulverizer coal feeder, and row powder fan, pulverizer coal feeder, air and powder mixer and burner are all connected with control system in primary air piping.The utility model is simple in structure, easy to use, and design is reasonable, is conducive to boiler at low load stable operation, and not throwing oily minimum steady combustion load 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.
Description
（One）Technical field
Technical field of boiler combustion is the utility model is related to, more particularly to a kind of coal unit depth peak regulation surely fires system.
（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 is we provides a large amount of clean electric powers, on the other hand, its generated output with
The safe operation and supply of electric power guarantee of machine and unstability also to electric system bring huge challenge.
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 disappears
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, and new energy high speed development can not be met 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 assigning the notice of thermoelectricity flexibility transformation pilot project》, 16 coal power stations such as Dandong Power Plant are determined as
Thermoelectricity flexibility transformation pilot project is lifted, 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 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, other 5 layers once
Wind snout is configured to low nitrogen coal burner.
Oily minimum steady is not thrown in above-mentioned boiler actual motion and fires load generally in 50%BMCR, depth peak modulation capacity is poor, load
It is combustion-supporting that oil need to be thrown when relatively low, influences Unit Economic benefit；To ensure to stablize burning in stove during depth peak regulation, peak regulation is extended
Climb the 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 is in order to make up for the deficiencies of the prior art, there is provided a kind of simple in structure, stable, energy conservation and environmental protection
Coal unit depth peak regulation surely fire system.
The utility model is achieved by the following technical solution：
A kind of coal unit depth peak regulation surely fires system, including depth peak regulation steady burning burner, it is characterised in that：The combustion
Primary air piping is connected with the burner hearth of burner, primary air piping end is connected with row powder fan, and wind powder is provided with primary air piping and is mixed
Clutch, air and powder mixer connect powder cabin by pulverizer coal feeder, and row powder fan, pulverizer coal feeder, air and powder mixer and burner are all connected with controlling
System processed.
In the utility model, powder cabin coal dust is carried to depth peak regulation steady burning burner through pulverizer coal feeder by First air, is passed through a little
Kerosene rifle firing coal-dust, oil gun exits after coal dust firing is stablized, and system can continually and steadily be run, to realize that coal unit cold conditions opens
Dynamic or low-load combustion-stabilizing.
The more excellent technical solution of the utility model is：
The inlet flange of the pulverizer coal feeder is connected to powder cabin bottom, and the outlet tremie pipe radial direction oblique cutting of pulverizer coal feeder is mixed in wind powder
In clutch, the connection of pulverizer coal feeder and powder cabin and air and powder mixer is realized.
The primary air piping is connected on burner to last elbow in burner hearth direction, realizes primary air piping and combustion
The connection of burner internal furnace.
The primary air piping is in parallel four, and air and powder mixer is mounted on each primary air piping, and corresponding wind powder mixes
The pulverizer coal feeder of clutch is four, and every load is 0-3t/h.
The utility model is simple in structure, easy to use, and design is reasonable, is conducive to boiler at low load stable operation, does not throw oil
Minimum steady combustion load can be stablized in 0-40%BMCR, and longtime running not accumulated powder, noncoking, later maintenance is less, is conducive to energy saving
Environmental protection.
（Four）Brief description of the drawings
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the structure diagram of the utility model.
In figure, 1 row powder fan, 2 primary air pipings, 3 powder cabins, 4 pulverizer coal feeders, 5 air and powder mixers, 6 burners, 7 burner hearths, 8 controls
System processed.
（Five）Embodiment
Attached drawing is a kind of specific embodiment of the utility model.The embodiment includes depth peak regulation steady burning burner 6, described
Primary air piping 2 is connected with the burner hearth 7 of burner 6,2 end of primary air piping is connected with row powder fan 1, is installed in primary air piping 2
There is air and powder mixer 5, air and powder mixer 5 connects powder cabin 3, row powder fan 1, pulverizer coal feeder 4,5 and of air and powder mixer by pulverizer coal feeder 4
Burner 6 is all connected with control system 8；The inlet flange of the pulverizer coal feeder 4 is connected to 3 bottom of powder cabin, the outlet blanking of pulverizer coal feeder 4
Caliber is to oblique cutting on air and powder mixer 5；Last elbow in the primary air piping 2 to 7 direction of burner hearth is connected to burner 6
On；The primary air piping 2 is in parallel four, and air and powder mixer 5, corresponding wind powder mixing are mounted on each primary air piping 2
The pulverizer coal feeder 4 of device 5 is four, and every load is 0-3t/h.
In the utility model, coal dust is carried to depth peak regulation steady burning burner 6, coal through pulverizer coal feeder 4 by First air in powder cabin 3
Powder stablizes burning in burner 6, to realize coal unit cold start or low-load combustion-stabilizing.
Steady four depth peak regulation combination steady burning burners 6 of combustion system configuration, burner 6 are arranged in boiler bottom secondary air chamber
In；The utility model configures a set of independent powder-supply system, and to supply powder to burner 6, coal dust is derived from powder cabin 3, is conveyed by First air
To burner combustion.Steady combustion system configuration autonomous control system 8, to realize steady combustion system automation management.
The utility model, which surely fires system, has a stronger boiler low load stable combustion ability, system configure oil gun input it is shorter when
Between can exit, system put into operation during without putting into other combustion-supporting fuel again；, can be steady in a long-term with stronger anti-coking ability
Operation.
The utility model can be used in coal unit depth peak regulation, boiler is not thrown oily minimum steady and fires load in 0-40%
BMCR；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 coal unit depth peak regulation surely fires system, including depth peak regulation steady burning burner（6）, it is characterised in that：It is described
Burner（6）Burner hearth（7）On be connected with primary air piping（2）, primary air piping（2）End is connected with row powder fan（1）, First air
Pipe（2）In air and powder mixer is installed（5）, air and powder mixer（5）Pass through pulverizer coal feeder（4）Connect powder cabin（3）, row powder fan（1）、
Pulverizer coal feeder（4）, air and powder mixer（5）And burner（6）It is all connected with control system（8）.
2. coal unit depth peak regulation according to claim 1 surely fires system, it is characterised in that：The pulverizer coal feeder（4）'s
Inlet flange is connected to powder cabin（3）Bottom, pulverizer coal feeder（4）Outlet tremie pipe radial direction oblique cutting in air and powder mixer（5）On.
3. coal unit depth peak regulation according to claim 1 surely fires system, it is characterised in that：The primary air piping（2）
To burner hearth（7）Last elbow in direction is connected to burner（6）On.
4. coal unit depth peak regulation according to claim 1 surely fires system, it is characterised in that：The primary air piping（2）
For in parallel four, each primary air piping（2）On be mounted on air and powder mixer（5）, corresponding air and powder mixer（5）Pulverizer coal feeder
（4）For four, every load is 0-3t/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721108285.6U CN207247258U (en) | 2017-08-31 | 2017-08-31 | Coal unit depth peak regulation surely fires system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721108285.6U CN207247258U (en) | 2017-08-31 | 2017-08-31 | Coal unit depth peak regulation surely fires system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207247258U true CN207247258U (en) | 2018-04-17 |
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ID=61883929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721108285.6U Active CN207247258U (en) | 2017-08-31 | 2017-08-31 | Coal unit depth peak regulation surely fires system |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543196A (en) * | 2017-08-31 | 2018-01-05 | 山东英电环保科技有限公司 | Coal unit depth peak regulation surely fires system |
| CN112902151A (en) * | 2021-03-26 | 2021-06-04 | 西安热工研究院有限公司 | System for flexible peak shaving of boiler of storage type pulverizing system in adaptation |
-
2017
- 2017-08-31 CN CN201721108285.6U patent/CN207247258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543196A (en) * | 2017-08-31 | 2018-01-05 | 山东英电环保科技有限公司 | Coal unit depth peak regulation surely fires system |
| CN112902151A (en) * | 2021-03-26 | 2021-06-04 | 西安热工研究院有限公司 | System for flexible peak shaving of boiler of storage type pulverizing system in adaptation |
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