CN107504479A - Solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, method - Google Patents
Solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, method Download PDFInfo
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- CN107504479A CN107504479A CN201710761299.6A CN201710761299A CN107504479A CN 107504479 A CN107504479 A CN 107504479A CN 201710761299 A CN201710761299 A CN 201710761299A CN 107504479 A CN107504479 A CN 107504479A
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- secondary air
- bellows
- air box
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- dividing plate
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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
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
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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
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, method the present invention relates to a kind of, apparatus of the present invention, including：At least one layer of secondary air box dividing plate is set in each secondary air box, one end of secondary air box dividing plate is connected with overfire air port, the other end of secondary air box dividing plate is hinged with baffle plate, baffle plate is attached with setting by being arranged on the crank outside secondary air box, the rotation between clockwise and/or counterclockwise 0 ° to 90 ° is carried out by crank regulating fender, the secondary dividing plate of at least one layer of spout also is provided with the overfire air port connected with secondary air box, nozzle closure air outlet is extended to by air inlet, the nozzle closure of air inlet is arranged on the present invention on the correspondence position of secondary air box dividing plate by that will be separated into inside layer secondary air box at least two layers, and then adjust the air quantity by secondary air box, improve the method for operation of burner.
Description
Technical field
The present invention relates to solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, method.
Background technology
More and more stricter with environment protection emission index, power plant has carried out denitration retrofit work, and most power plant are correspondingly
Low-NOx combustor transformation has been carried out, to reduce furnace outlet NOx content, has mitigated the operating pressure of denitrating system device.Low NOx
The general scheme of burner reconstruction is to extract the 25-30% parts air quantity for the total blast volume that burns, and moves on to the top of burner
Region forms SOFA wind (also referred to as burnout degree), so forms two coal dust firing regions, i.e. primary zone and burning-out zone (SOFA wind
Area), it is general to keep main burner region excess air coefficient to be maintained at 0.85 or so, coal dust is in anoxycausis state, drop
Low fire box temperature and oxidizing atmosphere, the actual purpose for reducing NOx.
Carried out due to relying on original burner when low-NOx combustor is transformed, thus to former burner secondary air box and
The change of spout is smaller, and when thus causing SOFA wind combustors and largely blowing, big bellows pressure drop is low excessive, or even can not
Maintain, so as to derive problems with：
(1) during high load capacity, most air quantity by top SOFA burners, bottom Secondary Air burner throttle aperture compared with
Small, resistance is larger, and overfire air port speed is relatively low, and Secondary Air is rigidly on the weak side and can not organize normally to burn；
During (2) 50% underload, the relatively low phenomenon of the big the pressure of bellows of generally existing, it is to ensure wind so to cause during underload
Case pressure and be forced to turn down the SOFA dampers on upper strata, burner region is returned to oxygen-enriched combusting state again, make burner hearth
Export the rise of NOx emission value.
(3) for using the boiler of meager coal, because bottom primary combustion zone lacks wind, while the rigid weak burning tissues of Secondary Air
Difference, it may appear that the problem of fly ash combustible material is bigger than normal, or even occur that load is higher, the bigger phenomenon of fly ash combustible material, influence boiler
Efficiency reduces.
(4) because furnace outlet NOx emission value is bigger than normal conflicting with fly ash combustible material, deposited in terms of boiler operatiopn adjustment
In bigger difficulty.To ensure flying dust value within the specific limits, some power plant are forced to improve furnace outlet NOx emission value, pass through
Ammonia spraying amount is increased to meet environment protection standard emission request, causes air preheater NH4HSO4It is viscous stifled, the increase of air preheater resistance, have influence on
The normal output of unit and safe operation.
In view of the defects of above-mentioned, the design people is actively subject to research and innovation, big to design a kind of solution low-NOx combustor
The low burner reconstruction device of the pressure of bellows, make it with more the value in industry.
The content of the invention
To solve above-mentioned technology, safety problem, can ensure to improve low NO it is an object of the invention to provide one kindXBurner is big
The pressure of bellows and improve that main burner region Secondary Air is rigid to solve the low burner reconstruction of the big the pressure of bellows of low-NOx combustor
Device, method.
The present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, including：To main burner and
The interconnected secondary air box of each layer in SOFA wind region, the inside of overfire air port are transformed, in each described Secondary Air
At least one layer of secondary air box dividing plate is set in case, the inlet side of the overfire air port is provided with mounting bracket, the secondary air box every
One end of plate is connected with the mounting bracket, and the other end of the secondary air box dividing plate is extended to inside the secondary air box, described
The other end of secondary air box dividing plate is hinged with baffle plate, and the baffle plate is attached with the crank being arranged on outside secondary air box, leads to
Cross the crank regulating fender and carry out rotation between clockwise and/or counterclockwise 0 ° to 90 °；
At least one layer of nozzle closure also is provided with the overfire air port, described nozzle closure is extended to by air inlet
At air outlet.
Further, one layer of secondary air box dividing plate is provided with described secondary air box, the secondary air box dividing plate is located at institute
State the middle part of secondary air box, the overall length of the secondary air box dividing plate and the baffle plate being hinged on the secondary air box dividing plate is secondary
The half of bellows length.
Further, one layer of nozzle closure is provided with the overfire air port, the nozzle closure of air inlet is set
With on the secondary air box dividing plate opposite position.
Further, two layers of secondary air box dividing plate are provided with described secondary air box, each layer secondary air box dividing plate is to described
The distance of secondary air box shell is equal, and the baffle plate of each layer secondary air box dividing plate connection can carry out the clockwise and/or inverse time
Rotation between 0 ° to 90 ° of pin.
Further, two layers of nozzle closure are provided with the overfire air port, the nozzle closure of air inlet is set
Distinguish with the two secondary air box dividing plates on opposite positions.
Further, the crank is manually adjusted, motor or linkage are adjusted.
Further, when the baffle plate and the secondary air box dividing plate are in 90 °, the baffle plate and the wind of the secondary air box
Gap between tank wall is 1 to 5cm.
Further, the mounting bracket is provided with joint locating device, and the secondary air box dividing plate is filled by joint orientation
Put on the mounting bracket.
The present invention solves the low burner reconstruction method of the big the pressure of bellows of low-NOx combustor, including Claims 1-4 is appointed
Solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor described in one, methods described includes：
Boiler operatiopn load is obtained,
When boiler operatiopn load is 75-100%THA operating modes, when secondary wind pressure can safeguard 0.7-2.0kPa, SOFA windshield plates
Aperture with 50-100%, spout air quantity need not redistribute adjustment, and baffle plate is placed in into horizontal level；
When boiler load is in 60-75%THA, the big the pressure of bellows of Secondary Air is less than 0.5-1.0KPa, SOFA throttle openings
Only 45 to 50%, regulating fender so that adjustment after bellows in wind flow area be bellows entire area on the basis of reduce 5%-
Between 50%；
When boiler load is in 45-60%THA, the big the pressure of bellows of Secondary Air now is generally below 0.5KPa, now
SOFA throttle openings are less than 30% even 0%, and furnace outlet discharge value is higher than design load, now need to carry out secondary air flow
Redistribute, wind flow area is reduced to original half in bellows.
By such scheme, the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, method extremely
There is advantages below less：
1st, isolation baffle plate can be adjusted at any time according to big bellows pressure change demand, while improving big the pressure of bellows, improved
The speed and rigidity of spout Secondary Air, play a part of overheavy firing.
2nd, during underload, the flow area in main burner region is reduced to by isolation baffle plate by original half,
Effectively ensure big the pressure of bellows in rational scope, and make the increase of SOFA air quantity, reduce the oxic gas of primary combustion zone
Atmosphere, furnace outlet NOx emission value can be effectively reduced, while the ammonia spraying amount of denitrating system is effectively reduced, reduce the escaping of ammonia
Probability, effectively prevent the blocking of air preheater.
3rd, isolation baffle plate adjustment has stronger flexibility.Can be clockwise according to the Operation Mode Selection of a wind combustor
And adjustment counterclockwise.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is the inside for the embodiment 1 that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
Structural representation；
Fig. 2 is the outside for the embodiment 1 that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
Structural representation；
Fig. 3 is the inside for the embodiment 2 that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
Structural representation；
Fig. 4 is the inside for the embodiment 3 that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
Structural representation；
Fig. 5 is the crank regulating fender that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
The schematic diagram of angle；
Fig. 6 is the crank regulating fender that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
The schematic diagram of angle；
Fig. 7 is the crank regulating fender that the present invention solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor
The schematic diagram of angle；
Fig. 8 is that the present invention is that the baffle angle for solving the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor is adjusted
Whole figure；
Fig. 9 is that the present invention is that the baffle angle for solving the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor is adjusted
Whole figure.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
As shown in Fig. 1 to 2, the present embodiment solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, bag
Include：The inside of the interconnected secondary air box 5 of main burner and each layer in SOFA wind region, overfire air port 4 is transformed,
One layer of secondary air box dividing plate 2 is set in each described secondary air box, and the inlet side of the overfire air port is provided with mounting bracket, institute
The one end for stating secondary air box dividing plate is connected with the mounting bracket, and the other end of the secondary air box dividing plate extends to the Secondary Air
Inside case, the other end of the secondary air box dividing plate is hinged with baffle plate 1, the baffle plate and the crank being arranged on outside secondary air box
7 are attached, and the rotation between clockwise and/or counterclockwise 0 ° to 90 ° is carried out by the crank regulating fender；
One layer of nozzle closure 3 also is provided with the overfire air port, described nozzle closure is extended to out by air inlet
At air port.
In the present embodiment, one layer of secondary air box dividing plate is provided with described secondary air box, the secondary air box dividing plate is located at
The overall length of the middle part of the secondary air box, the secondary air box dividing plate and the baffle plate being hinged on the secondary air box dividing plate is two
The half of secondary bellows length.One layer of nozzle closure, the nozzle closure of air inlet are provided with the overfire air port
Be arranged on on the secondary air box dividing plate opposite position.
In the present embodiment, in order to facilitate the movement of spout, the mounting bracket is provided with joint locating device 6, described secondary
Bellows dividing plate is arranged on the mounting bracket by joint locating device.In the present embodiment, the crank manually adjusts.
Embodiment 2
As shown in figure 3, the present embodiment solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, with implementation
The difference of example 1 is that the position of the Secondary Air dividing plate is not located at the middle part of the secondary air box, and is provided in
Middle part position on the upper side.
Embodiment 3
As shown in figure 4, the present embodiment solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, including：It is right
The interconnected secondary air box of main burner and each layer in SOFA wind region, the inside of overfire air port are transformed, in each institute
Two layers of secondary air box dividing plate 11,12 is set in the secondary air box stated, and the inlet side of the overfire air port is provided with mounting bracket, described
One end of secondary air box dividing plate is connected with the mounting bracket, and the other end of the secondary air box dividing plate extends to the secondary air box
Inside, the other end of the secondary air box dividing plate have been respectively articulated with baffle plate 21,22, and the baffle plate is with being arranged on outside secondary air box
Crank be attached, the rotation between 0 ° to 90 ° clockwise and anticlockwise is carried out by the crank regulating fender 21, lead to
Cross the crank regulating fender 22 and carry out rotation between counterclockwise 0 ° to 90 °.
Two layers of nozzle closure also is provided with the overfire air port, described nozzle closure extends to air-out by air inlet
At mouthful.The nozzle closure of air inlet is arranged on to be distinguished on opposite positions with the two secondary air box dividing plates.
In the present embodiment, in order to facilitate the movement of spout, the mounting bracket is provided with joint locating device 6, described secondary
Bellows dividing plate is arranged on the mounting bracket by joint locating device.In the present embodiment, the crank manually adjusts.
As shown in Figs. 5 to 7, in the various embodiments described above, the schematic diagram of crank regulating fender angle.
The various embodiments described above, to prevent from being isolated half side spout scaling loss, baffle plate reserves certain gap with bellows cavity.
When baffle plate is closed, certain cooling air quantity is still kept by being adequately cooled the side spout.Institute
When to state baffle plate and the secondary air box dividing plate be in 90 °, gap between the bellows wall of the baffle plate and the secondary air box for 1 to
5cm。
Embodiment 4
The present embodiment solves the low burner reconstruction method of the big the pressure of bellows of low-NOx combustor, including described in embodiment 1
Solves the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, methods described includes：
Boiler operatiopn load is obtained,
When boiler load is higher (general 75-100%THA operating modes), when secondary wind pressure can safeguard 0.7-2.0kPa, SOFA
Windshield plate has 50-100% aperture, and for furnace outlet NOx emission value typically in acceptability limit, spout air quantity need not be again
Internal separation baffles are placed in horizontal level by distribution adjustment.At this moment secondary air separating up and down two layers by burner, with original combustion
The burner method of operation is identical, and the burning to coal dust is had no effect, as shown in Figure 1.
When boiler load is in 60-75%THA, the big the pressure of bellows of Secondary Air now is generally below 0.5-1.0KPa, this
When SOFA throttle openings only 50% or so, if necessary to re-starting adjustment to big the pressure of bellows, can be existed with regulating fender
0 ° -90 (horizontal-vertical) are maintained at a certain angle, and the flow area after adjustment reduces 0%- on the basis of former area of injection orifice
Between 50%, by the way that area is adjusted flexibly, resistance increase, big the pressure of bellows and spout secondary wind speed is improved, and is burnt
Structure property is strengthened, as shown in Figure 8.
When boiler load is in 45-60%THA, the big the pressure of bellows of Secondary Air now is generally below 0.5KPa, now
SOFA throttle openings are less than 30% even 0%, and furnace outlet discharge value is higher than design load, now need to carry out secondary air flow
Redistribute, as shown in Figure 9.
Separation baffles position is adjusted 90 ° clockwise or counterclockwise, the first half or lower half bellows are isolated, is led in bellows
Flow area is reduced to original half, and after area is reduced, resistance increase, big the pressure of bellows and spout secondary wind speed obtains
Effectively improve, Secondary Air can is effectively organized to burn.
Baffle plate adjusts (regulating fender is located at top or bottom) clockwise or counterclockwise, and the First air depending on adjacent layer fires
The method of operation of burner.If lower floor's First air operation, needs to adjust baffle plate into 90 ° clockwise, Secondary Air is kept off by isolation
Plate lower passage passes through；It is on the contrary then baffle plate adjusts to 90 ° counterclockwise, Secondary Air is passed through by isolation baffle plate upper channel.
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and
Modification, these improvement and modification also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, it is characterised in that including：To main combustion
The interconnected secondary air box of each layer in burner and SOFA wind region, the inside of overfire air port are transformed, each described
At least one layer of secondary air box dividing plate is set in secondary air box, and the inlet side of the overfire air port is provided with mounting bracket, described secondary
One end of bellows dividing plate is connected with the mounting bracket, and the other end of the secondary air box dividing plate is extended in the secondary air box
Portion, the other end of the secondary air box dividing plate are hinged with baffle plate, and the baffle plate and the crank being arranged on outside secondary air box are carried out
Connection, the rotation between clockwise and/or counterclockwise 0 ° to 90 ° is carried out by the crank regulating fender；
At least one layer of nozzle closure also is provided with the overfire air port, described nozzle closure extends to air-out by air inlet
At mouthful.
2. according to claim 1 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, its feature exists
In described secondary air box is interior to be provided with one layer of secondary air box dividing plate, and the secondary air box dividing plate is located in the secondary air box
The overall length of portion, the secondary air box dividing plate and the baffle plate being hinged on the secondary air box dividing plate is two points of secondary air box length
One of.
3. according to claim 2 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, its feature exists
In the overfire air port is interior to be provided with one layer of nozzle closure, and the nozzle closure of air inlet is arranged on and the Secondary Air
On separator for container opposite position.
4. according to claim 1 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, its feature exists
In described secondary air box is interior to be provided with two layers of secondary air box dividing plate, each layer secondary air box dividing plate to the secondary air box shell
Apart from equal, the baffle plate of each layer secondary air box dividing plate connection can be carried out between clockwise and/or counterclockwise 0 ° to 90 °
Rotation.
5. according to claim 4 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, its feature exists
In being provided with two layers of nozzle closure in, the overfire air port, the nozzle closure of air inlet be arranged on it is two described secondary
On bellows dividing plate difference opposite position.
6. according to claim 1 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor, its feature exists
In the crank is manually adjusted, motor or linkage are adjusted.
7. according to any one of claims 1 to 6 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor,
Characterized in that, when the baffle plate and the secondary air box dividing plate are in 90 °, the bellows wall of the baffle plate and the secondary air box it
Between gap be 1 to 5cm.
8. according to any one of claims 1 to 6 solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor,
Characterized in that, the mounting bracket is provided with joint locating device, the secondary air box dividing plate is installed by joint locating device
On the mounting bracket.
9. a kind of solve the low burner reconstruction method of the big the pressure of bellows of low-NOx combustor, it is characterised in that including claim
The low burner reconstruction device of 1 to 4 any described solution big the pressure of bellows of low-NOx combustor, methods described include：
Boiler operatiopn load is obtained,
When boiler operatiopn load is 75-100%THA operating modes, when secondary wind pressure can safeguard 0.7-2.0kPa, SOFA windshield plates have
50-100% aperture, spout air quantity need not redistribute adjustment, and baffle plate is placed in into horizontal level；
When boiler load is in 60-75%THA, the big the pressure of bellows of Secondary Air is less than 0.5-1.0KPa, SOFA throttle openings only 45
To 50%, regulating fender is so that wind flow area is to reduce 5%-50% on the basis of bellows entire area in bellows after adjustment
Between；
When boiler load is in 45-60%THA, the big the pressure of bellows of Secondary Air now is generally below 0.5KPa, SOFA now
Throttle opening is less than 30% even 0%, and furnace outlet discharge value is higher than design load, now needs to carry out again secondary air flow
Distribute, wind flow area is reduced to original half in bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761299.6A CN107504479B (en) | 2017-08-30 | 2017-08-30 | Combustor transformation device for solving low pressure of large bellows of low NOx combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761299.6A CN107504479B (en) | 2017-08-30 | 2017-08-30 | Combustor transformation device for solving low pressure of large bellows of low NOx combustor |
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| Publication Number | Publication Date |
|---|---|
| CN107504479A true CN107504479A (en) | 2017-12-22 |
| CN107504479B CN107504479B (en) | 2023-07-11 |
Family
ID=60694240
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710761299.6A Active CN107504479B (en) | 2017-08-30 | 2017-08-30 | Combustor transformation device for solving low pressure of large bellows of low NOx combustor |
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| RU2097651C1 (en) * | 1994-01-26 | 1997-11-27 | Красноярский государственный технический университет | Boiler furnace |
| US5771823A (en) * | 1996-01-31 | 1998-06-30 | Aep Resources Service Company | Method and apparatus for reducing NOx emissions from a multiple-intertube pulverized-coal burner |
| JP2011052871A (en) * | 2009-08-31 | 2011-03-17 | Babcock Hitachi Kk | Combustion device |
| CN102563638A (en) * | 2012-03-06 | 2012-07-11 | 浙江大学 | Pulverized-fuel boiler two-channel over-fire air or secondary air combustor device |
| CN102679336A (en) * | 2012-06-11 | 2012-09-19 | 杭州浙大天元科技有限公司 | Secondary air burner nozzle with swingable side air |
| CN103953919A (en) * | 2014-04-27 | 2014-07-30 | 大唐(北京)能源管理有限公司 | Burning-out air and secondary air adjusting device of pulverized coal boiler |
| CN205481098U (en) * | 2016-03-22 | 2016-08-17 | 湖南大唐节能科技有限公司 | Overgrate air spout device that discharge area is adjustable |
| CN207350324U (en) * | 2017-08-30 | 2018-05-11 | 大唐东北电力试验研究所有限公司 | Solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor |
-
2017
- 2017-08-30 CN CN201710761299.6A patent/CN107504479B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2097651C1 (en) * | 1994-01-26 | 1997-11-27 | Красноярский государственный технический университет | Boiler furnace |
| US5771823A (en) * | 1996-01-31 | 1998-06-30 | Aep Resources Service Company | Method and apparatus for reducing NOx emissions from a multiple-intertube pulverized-coal burner |
| JP2011052871A (en) * | 2009-08-31 | 2011-03-17 | Babcock Hitachi Kk | Combustion device |
| CN102563638A (en) * | 2012-03-06 | 2012-07-11 | 浙江大学 | Pulverized-fuel boiler two-channel over-fire air or secondary air combustor device |
| CN102679336A (en) * | 2012-06-11 | 2012-09-19 | 杭州浙大天元科技有限公司 | Secondary air burner nozzle with swingable side air |
| CN103953919A (en) * | 2014-04-27 | 2014-07-30 | 大唐(北京)能源管理有限公司 | Burning-out air and secondary air adjusting device of pulverized coal boiler |
| CN205481098U (en) * | 2016-03-22 | 2016-08-17 | 湖南大唐节能科技有限公司 | Overgrate air spout device that discharge area is adjustable |
| CN207350324U (en) * | 2017-08-30 | 2018-05-11 | 大唐东北电力试验研究所有限公司 | Solve the low burner reconstruction device of the big the pressure of bellows of low-NOx combustor |
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| Publication number | Publication date |
|---|---|
| CN107504479B (en) | 2023-07-11 |
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