CN105570884B - A kind of CFB Boiler road multistep ignition system - Google Patents
A kind of CFB Boiler road multistep ignition system Download PDFInfo
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- CN105570884B CN105570884B CN201610092276.6A CN201610092276A CN105570884B CN 105570884 B CN105570884 B CN 105570884B CN 201610092276 A CN201610092276 A CN 201610092276A CN 105570884 B CN105570884 B CN 105570884B
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- road
- air
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- light breeze
- burner
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
CFB Boiler road multistep ignition system disclosed by the invention includes inlet conduits, main air duct, outlet conduits and one-level air channel igniting unit and at least one light breeze road igniting unit, air channel of inlet conduits connection preheater outlet and main air duct and the total air door of inlet conduits is provided with porch, main air duct connects inlet conduits and outlet conduits and main air duct air door is provided with porch, outlet conduits connection main air duct and water cooled wind chamber under boiler bed；One-level air channel igniting unit includes one-level air-channel ignition burner, the one-level air channel being arranged in parallel with main air duct and one-level air door of air duct, and one-level air-channel ignition burner is arranged in main air duct and is connected with one-level air channel；Light breeze road igniting unit includes light breeze road start-up burner, the light breeze road and light breeze road air door that are arranged in parallel with main air duct and one-level air channel, light breeze road start-up burner is arranged in main air duct and positioned at the downstream of one-level air-channel ignition burner, while being connected with light breeze road.
Description
Technical field
The present invention relates to ignition of the boiler technical field, more particularly, it is related to a kind of CFB Boiler road classification
Ignition system.
Background technology
Currently, China be that recirculating fluidized bed (CFB) boiler generating set quantity is most in the world, total installation of generating capacity is maximum,
Country with the fastest developing speed, recirculating fluidized bed (CFB) boiler generating set is widely used in China.
Recirculating fluidized bed (CFB) boiler ignition start, typically being gone to bed using bed, second line of a couplet chalaza is fiery, and being lighted a fire with bed lower air duct is
Main, bed lower air duct ignition system is recirculating fluidized bed (CFB) boiler ignition start, the visual plant of low-load combustion-stabilizing, due to it
Ignition heat utilization rate is high, the features such as igniting toggle speed is fast, and large-scale fluidized bed (CFB) boiler is widely used in always.
But, with recirculating fluidized bed (CFB) boiler capacity in recent years raising, it is necessary to igniting input heat constantly increase
Plus, the problem of ignition system of centralized arrangement air-channel ignition burner also exposes many in use mainly includes：1、
The easy local overheating of ignition air duct；2nd, the scorification of ignition air duct refractory material, come off；3rd, air-channel ignition burner floor space is more next
It is bigger, difficult arrangement etc..
The content of the invention
In order to solve problems of the prior art, ignition air duct office can be prevented it is an object of the invention to provide one kind
Portion's overtemperature and the CFB Boiler road multistep ignition system for reducing structure arrangement difficulty.
The invention provides a kind of CFB Boiler road multistep ignition system, the multistep ignition system include into
One's intention as revealed in what one says road, main air duct, outlet conduits and one-level air channel igniting unit and at least one light breeze road igniting unit, wherein, institute
State air channel of inlet conduits connection preheater outlet and main air duct and the total air door of inlet conduits, institute are provided with porch
State main air duct connection inlet conduits and outlet conduits and main air duct air door is provided with porch, the outlet conduits connection master
Air channel and water cooled wind chamber under boiler bed；One-level air channel igniting unit includes one-level air-channel ignition burner and the main wind
The one-level air channel that road is arranged in parallel and the one-level air door of air duct for being arranged on one-level air channel porch, the one-level air channel igniting
Burner is arranged on the main air duct and is connected with the one-level air channel；Light breeze road igniting unit includes light breeze road
Light breeze road and be arranged on light breeze road porch that start-up burner and the main air duct and one-level air channel are arranged in parallel
Light breeze road air door, light breeze road start-up burner is arranged on main air duct and positioned at one-level air channel ignition
The downstream of device, while being connected with the light breeze road.
According to one embodiment of CFB Boiler road multistep ignition system of the present invention, gone back in the inlet conduits
It is provided with entrance wind-warm syndrome measuring unit and inlet conduits total blast volume measuring unit.
According to one embodiment of CFB Boiler road multistep ignition system of the present invention, also set in the main air duct
It is equipped with main air duct air measuring unit.
According to one embodiment of CFB Boiler road multistep ignition system of the present invention, the one-level air channel igniting
Unit also includes the one-level air-channel ignition burner air measuring unit being arranged in one-level air channel and is arranged in main air duct
One-level air-channel ignition burner exports wind-warm syndrome measuring unit.
According to one embodiment of CFB Boiler road multistep ignition system of the present invention, the light breeze road igniting
Unit also includes the light breeze road start-up burner air measuring unit being arranged in light breeze road and is arranged in main air duct
Light breeze road start-up burner outlet wind-warm syndrome measuring unit.
According to one embodiment of CFB Boiler road multistep ignition system of the present invention, gone back in the outlet conduits
It is provided with outlet air measuring unit and outlet wind-warm syndrome measuring unit.
According to one embodiment of CFB Boiler road multistep ignition system of the present invention, described at least one two grades
At least one light breeze road start-up burner arranged for interval of air channel igniting unit is on main air duct and is sequentially located at the one-level
The downstream of air-channel ignition burner.
Compared with prior art, the present invention disperses input ignition heat, makes air channel point by hierarchical arrangement start-up burner
Ignition combustor input heat is more uniform, steps up wind-warm syndrome of igniting, reaches that igniting starts and requires；Simultaneously in every grade of air channel
Start-up burner entrance is disposed with air quantity measuring point, and outlet is disposed with temperature point, for feeding back after this grade of start-up burner heating
A hot blast situation, convenient adjustment next stage start-up burner input heat, so as to reach that temperature rise is uniform in ignition air duct
Effect, can effectively prevent ignition air duct local overheating, refractory material scorification, the problems such as come off.For large-size circulating fluidized bed
(CFB) boiler, by dispersed placement air-channel ignition burner, can make full use of space, reduce air-channel ignition burner and take up an area
Area, reduction structure arrangement difficulty.
Brief description of the drawings
Fig. 1 shows the connection of CFB Boiler road multistep ignition system according to an exemplary embodiment of the present invention
Structural representation.
Fig. 2 shows the structure of CFB Boiler road multistep ignition system according to an exemplary embodiment of the present invention
Schematic diagram.
Description of reference numerals：
1- inlet conduits, the total air door of 11- inlet conduits, 12- entrance wind-warm syndrome measuring unit, 13- inlet conduits total blast volume are surveyed
Measure unit, 2- one-levels air channel igniting unit, 21- one-levels air door of air duct, 22- main air ducts air door, 23- one-level air-channel ignition burners
Air measuring unit, 24- main air duct air measurings unit, 25- one-levels air-channel ignition burner, the air channel ignition of 26- one-levels
Device outlet wind-warm syndrome measuring unit, 27- one-levels air channel, 3- light breeze road igniting unit, 31- light breeze road air door, 32- light breeze road
Start-up burner air measuring unit, 33- light breeze road start-up burner, 34- light breeze road, the road ignition of 35- light breeze
Device outlet wind-warm syndrome measuring unit, 4- outlet conduits, 41- outlets air measuring unit, 42- outlets wind-warm syndrome measuring unit, 5- preheatings
Water cooled wind chamber, air channel of 7-, 8- main air ducts under device, 6- boiler beds.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically is chatted
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
The structure of CFB Boiler road multistep ignition system of the present invention and principle will be carried out below more detailed
Explanation.The CFB Boiler road multistep ignition system of the present invention passes through the scattered input igniting of multi-stage air channel start-up burner
Heat, makes ignition system temperature rise in entirely igniting start-up course in air channel more uniform.
Fig. 1 shows the connection of CFB Boiler road multistep ignition system according to an exemplary embodiment of the present invention
Structural representation, Fig. 2 shows CFB Boiler road multistep ignition system according to an exemplary embodiment of the present invention
Structural representation.
As depicted in figs. 1 and 2, according to the exemplary embodiment of the present invention, the CFB Boiler road is classified point
Fiery system includes inlet conduits 1, main air duct 8, outlet conduits 4 and one-level air channel igniting unit 2 and at least one light breeze road
Igniting unit 3.That is, in practice can be according to actual conditions in engineering, it is considered to multistage (three-level, even level Four) air channel ignition
Device ignition system, now then classification sets multiple light breeze roads igniting unit 3.
Wherein, inlet conduits 1 connection preheater 5 export an air channel 7 be provided with main air duct 8 and in porch into
The total air door 11 in one's intention as revealed in what one says road, main air duct 8 connects inlet conduits 1 and outlet conduits 4 and main air duct air door 22 is provided with porch,
Outlet conduits 4 connect main air duct 8 and water cooled wind chamber 6 under boiler bed.
Preferably, 1 entrance wind-warm syndrome measuring unit 12 and inlet conduits total blast volume measuring unit are additionally provided with inlet conduits
13, to examine the input condition of ignition system, that is, wind-warm syndrome of ventilation of lighting a fire and igniting.It is highly preferred that also being set in main air duct 8
Main air duct air measuring unit 24 is equipped with, to test the ventilation at main-inlet.
According to the present invention exemplary embodiment, one-level air channel igniting unit 2 include one-level air-channel ignition burner 25, with
The one-level air channel 27 that main air duct 8 is arranged in parallel and the one-level air door of air duct 21 for being arranged on the porch of one-level air channel 27, one-level air channel
Start-up burner 25 is arranged on main air duct 8 and is connected with one-level air channel 27
Light breeze road igniting unit 3 include light breeze road start-up burner 33, with main air duct 8 and one-level air channel 27 is in parallel sets
The light breeze road 34 put and the light breeze road air door 31 for being arranged on the porch of light breeze road 34, light breeze road start-up burner 33 are set
Put on main air duct 8 and positioned at the downstream of one-level air-channel ignition burner 25, while being connected with light breeze road 34.
During ignition of the boiler, close main air duct air door 22 and light breeze road air door 31 and retain a little cooling wind, regulation
The total air door 11 of inlet conduits, one-level air door of air duct 21 ensure the excess air coefficient of the air distribution of one-level air-channel ignition burner 25, with
Design wind speed is met, makes the outlet wind-warm syndrome of one-level air-channel ignition burner 25 within zone of reasonableness.Light a fire and fill when one-level air channel
Put 2 to put into operation successfully and after stable operation, the total air door 11 of regulation inlet conduits, light breeze road air door 31 ensure the igniting combustion of light breeze road
The excess air coefficient of the air distribution of burner 33, to meet design wind speed, makes ignition system export wind-warm syndrome and meets boiler ignition start need
Ask.
Preferably, one-level air channel igniting unit 2 also includes the one-level air-channel ignition burner being arranged in one-level air channel 27
Air measuring unit 23 and the one-level air-channel ignition burner outlet wind-warm syndrome measuring unit 26 being arranged in main air duct 8, to examine
Whether the wind-warm syndrome and air quantity of one-level air-channel ignition burner entrance and exit meet requirement, add for feeding back this grade of start-up burner
A hot blast situation after heat, convenient adjustment start-up burner input heat, so as to reach that temperature rise is uniform in whole ignition air duct
Effect.Similarly, light breeze road igniting unit 3 preferably also includes the light breeze road igniting combustion being arranged in light breeze road 34
Burner air measuring unit 32 and the light breeze road start-up burner wind-warm syndrome measuring unit 35 being arranged in main air duct 8, to examine
Whether the air quantity of light breeze road start-up burner entrance and the wind-warm syndrome of outlet meet requirement, add for feeding back this grade of start-up burner
A hot blast situation after heat, convenient adjustment start-up burner input heat, so as to reach that temperature rise is uniform in whole ignition air duct
Effect.In fact, the entrance wind-warm syndrome in one-level air channel and light breeze road can be measured by entrance wind-warm syndrome measuring unit 12.
Also, outlet air measuring unit 41 and outlet wind-warm syndrome measuring unit 42 are also preferably provided with outlet conduits 4,
For examining whether the outlet wind-warm syndrome of ignition system, air quantity meet boiler ignition start demand.Wherein, afterbody light breeze road
Igniting unit 3 can be not provided with light breeze road start-up burner wind-warm syndrome measuring unit 35, and directly be set using in outlet conduits 4
Outlet wind-warm syndrome measuring unit 42 examine whether the wind-warm syndrome of light breeze road start-up burner outlet meets requirement.
When needing to set at least one light breeze road igniting unit 3, by least one light breeze road igniting unit 3 extremely
A few arranged for interval of light breeze road start-up burner 33 is on main air duct 8 and is sequentially located at one-level air-channel ignition burner 25
Downstream.By dispersed placement multi-stage air channel start-up burner, space can be made full use of, the occupation of land of air-channel ignition burner is reduced
Area, reduction structure arrangement difficulty.
Illustrate with reference to specific example in the present invention structure of CFB Boiler road multistep ignition system and
Mode of operation.
Referring to attached Fig. 1 and 2, by taking 600MW recirculating fluidized beds (CFB) boiler as an example, boiler is using 2 sets of recycle streams of the invention
Fluidized bed boiler air channel multistep ignition system, often covers air channel multistep ignition system and sets two-stage air channel igniting unit, every grade of igniting is single
Member includes two start-up burners.
The CFB Boiler road multistep ignition system of this example is during ignition of the boiler, and the step that puts into operation is as follows：
1) by the total air door 11 of the inlet conduits being arranged on inlet conduits 1, entrance wind-warm syndrome measuring unit 12 and one's intention as revealed in what one says is entered
Road total blast volume measuring unit 13 examines ignition system input condition, that is, ventilation of lighting a fire, wind-warm syndrome of igniting；
2) main air duct air door 22 and light breeze road air door 31 are closed and retains a little cooling wind, passes through main air duct air measuring
Unit 24 and the observation cooling air quantity of light breeze road start-up burner air measuring unit 32；Observe one-level air-channel ignition burner wind
The measured value of phasor measurement unit 23 simultaneously coordinates the regulation total air door 11 of inlet conduits and one-level air door of air duct 21, it is ensured that light a fire in one-level air channel
The excess air coefficient of the air distribution of burner 25, to meet its design wind speed；When one-level air-channel ignition burner 25 put into operation successfully and
After stable operation, wind-warm syndrome measuring unit 26 is exported by one-level air-channel ignition burner and observes whether temperature value meets design load,
It is met if being unsatisfactory for adjustment one-level air-channel ignition burner 25 and exerting oneself, then prepares to start the igniting of light breeze road if meeting
Burner 33；
3) by observing the measured value of light breeze road start-up burner apparatus for measuring air quantity 32 and coordinating regulation inlet conduits total
Air door 11 and light breeze road air door 31, it is ensured that the excess air coefficient of the air distribution of light breeze road start-up burner 33, are set with meeting it
Count wind speed；When light breeze road start-up burner 33 puts into operation successfully and after stable operation, by observing one's intention as revealed in what one says temperature measurement unit 42
Temperature value, the airflow value of outlet air measuring unit 41 whether meet design load, if being unsatisfactory for, adjust light breeze road point
Ignition combustor 33 is exerted oneself and meets it.
4) after two-stage air-channel ignition burner stable operation, about 900 DEG C of flue gas will be formed in outlet conduits 4, passed through
Water cooled wind chamber 6 under the feeding boiler bed of outlet conduits 4, then sprayed by grid plate hood, make boiler bed stream and heat bed
Coal tossing temperature is reached, fire coal is then fed into, ignition process is terminated after forming stable bed temperature.
The CFB Boiler road multistep ignition system of this example during normal operation, closes one-level air channel in boiler
Air door 21 and light breeze road air door 31 simultaneously retain a little cooling wind, by adjusting the total air door 11 of inlet conduits and main air duct air door 22
Carry out the regulation of boiler First air.
To sum up, the present invention disperses input ignition heat, makes air channel ignition by hierarchical arrangement air-channel ignition burner
Device input heat is more uniform, the problems such as can effectively preventing ignition air duct local overheating and refractory material scorification, come off.And
And, dispersed placement air-channel ignition burner can make full use of space, reduce air-channel ignition burner floor space, reduction knot
Structure arranges difficulty.Using said structure, complete to light a fire by the input for entry condition of lighting a fire, air-channel ignition burner, it is as a result defeated
Go out, input a series of means such as adjustment, circulating fluid-bed (CFB) ignition of the boiler can be allowed to be strided forward to intelligent, one-touch startup.
The invention is not limited in foregoing embodiment.The present invention, which is expanded to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (7)
1. a kind of CFB Boiler road multistep ignition system, it is characterised in that the multistep ignition system includes entrance
Air channel, main air duct, outlet conduits and one-level air channel igniting unit and at least one light breeze road igniting unit, wherein,
It is total that air channel of the inlet conduits connection preheater outlet is provided with inlet conduits with main air duct and in porch
Air door, main air duct connection inlet conduits and outlet conduits and is provided with main air duct air door in porch, it is described go out one's intention as revealed in what one says
Road connects main air duct and water cooled wind chamber under boiler bed；
One-level air channel igniting unit includes one-level air-channel ignition burner, the one-level air channel being arranged in parallel with the main air duct
With the one-level air door of air duct for being arranged on one-level air channel porch, the one-level air-channel ignition burner is arranged on main air duct
And be connected with one-level air channel；
Light breeze road igniting unit includes light breeze road start-up burner, is arranged in parallel with the main air duct and one-level air channel
Light breeze road and be arranged on the light breeze road air door of light breeze road porch, light breeze road start-up burner is set
On main air duct and positioned at the downstream of the one-level air-channel ignition burner, while being connected with the light breeze road.
2. CFB Boiler road multistep ignition system according to claim 1, it is characterised in that it is described enter one's intention as revealed in what one says
Entrance wind-warm syndrome measuring unit and inlet conduits total blast volume measuring unit are additionally provided with road.
3. CFB Boiler road multistep ignition system according to claim 1, it is characterised in that the main air duct
In be additionally provided with main air duct air measuring unit.
4. CFB Boiler road multistep ignition system according to claim 1, it is characterised in that the force one wind
Road igniting unit also includes the one-level air-channel ignition burner air measuring unit being arranged in one-level air channel and is arranged on main wind
One-level air-channel ignition burner outlet wind-warm syndrome measuring unit in road.
5. CFB Boiler road multistep ignition system according to claim 1, it is characterised in that the light breeze
Road igniting unit also includes the light breeze road start-up burner air measuring unit being arranged in light breeze road and is arranged on main wind
Light breeze road start-up burner outlet wind-warm syndrome measuring unit in road.
6. CFB Boiler road multistep ignition system according to claim 5, it is characterised in that it is described go out one's intention as revealed in what one says
Outlet air measuring unit and outlet wind-warm syndrome measuring unit are additionally provided with road.
7. CFB Boiler road multistep ignition system according to claim 1, it is characterised in that described at least one
At least one light breeze road start-up burner arranged for interval of individual light breeze road igniting unit is on main air duct and is sequentially located at institute
State the downstream of one-level air-channel ignition burner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092276.6A CN105570884B (en) | 2016-02-19 | 2016-02-19 | A kind of CFB Boiler road multistep ignition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092276.6A CN105570884B (en) | 2016-02-19 | 2016-02-19 | A kind of CFB Boiler road multistep ignition system |
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| CN105570884A CN105570884A (en) | 2016-05-11 |
| CN105570884B true CN105570884B (en) | 2017-10-27 |
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|---|---|---|---|---|
| US4344372A (en) * | 1980-06-30 | 1982-08-17 | Aqua-Chem, Inc. | Fluidized bed combustion device |
| JPH10325510A (en) * | 1997-05-23 | 1998-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | Burner device for starting of pressure fluidized bed boiler |
| CN101476720A (en) * | 2008-11-11 | 2009-07-08 | 烟台双强燃烧控制工程有限公司 | Ignition device under circulating sulfuration bed of boiler |
| CN102287828A (en) * | 2011-07-22 | 2011-12-21 | 东方电气集团东方锅炉股份有限公司 | Air-channel ignition burner |
| CN203454115U (en) * | 2013-09-10 | 2014-02-26 | 鞍山锅炉厂有限公司 | Quick starting low-heat-storage ring-cooling-air ignition burning system device |
| CN204478035U (en) * | 2014-12-20 | 2015-07-15 | 无锡东马锅炉有限公司 | CFBB First air air-supply arrangement |
| CN105042577A (en) * | 2015-07-14 | 2015-11-11 | 河南科技大学 | Circulating fluidized bed boiler |
| CN205402694U (en) * | 2016-02-19 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Hierarchical ignition system in circulating fluidized bed boiler wind channel |
-
2016
- 2016-02-19 CN CN201610092276.6A patent/CN105570884B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344372A (en) * | 1980-06-30 | 1982-08-17 | Aqua-Chem, Inc. | Fluidized bed combustion device |
| JPH10325510A (en) * | 1997-05-23 | 1998-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | Burner device for starting of pressure fluidized bed boiler |
| CN101476720A (en) * | 2008-11-11 | 2009-07-08 | 烟台双强燃烧控制工程有限公司 | Ignition device under circulating sulfuration bed of boiler |
| CN102287828A (en) * | 2011-07-22 | 2011-12-21 | 东方电气集团东方锅炉股份有限公司 | Air-channel ignition burner |
| CN203454115U (en) * | 2013-09-10 | 2014-02-26 | 鞍山锅炉厂有限公司 | Quick starting low-heat-storage ring-cooling-air ignition burning system device |
| CN204478035U (en) * | 2014-12-20 | 2015-07-15 | 无锡东马锅炉有限公司 | CFBB First air air-supply arrangement |
| CN105042577A (en) * | 2015-07-14 | 2015-11-11 | 河南科技大学 | Circulating fluidized bed boiler |
| CN205402694U (en) * | 2016-02-19 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Hierarchical ignition system in circulating fluidized bed boiler wind channel |
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| CN105570884A (en) | 2016-05-11 |
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