CN209213893U - A kind of circulating fluidized bed boiler soot blower - Google Patents
A kind of circulating fluidized bed boiler soot blower Download PDFInfo
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- CN209213893U CN209213893U CN201821574612.1U CN201821574612U CN209213893U CN 209213893 U CN209213893 U CN 209213893U CN 201821574612 U CN201821574612 U CN 201821574612U CN 209213893 U CN209213893 U CN 209213893U
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- Prior art keywords
- air entraining
- pipe
- fluidized bed
- circulating fluidized
- gas blow
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Abstract
The utility model discloses a kind of circulating fluidized bed boiler soot blowers, including gas source, main line air entraining pipe, branch air entraining pipe, several gas blow pipes；Main line air entraining pipe one end is connected to gas source, and the other end is connect with branch air entraining pipe front end；Branch air entraining pipe, which is arranged below circulating fluidized bed boiler junior air preheater, leans on boiler side, and it is horizontally disposed to cross circulating fluidized bed boiler back-end ductwork；Branch air entraining pipe front end is arranged on the outside of circulating fluidized bed boiler, and is provided with regulating valve, and branch bleed pipe end is arranged in recirculating fluidized bed back-end ductwork；In boiler back end ductwork inner part, cloth is respectively equipped with several lower gas blow pipes to branch air entraining pipe along its length, and the removing of dust stratification can be realized in control valve.The utility model small investment, easy to operate, reliable for operation, maintenance is few, energy saving, and material is cheap；It can realize and specific aim deashing is carried out to the position of different dust stratification degree, ensure that ash-removal effect by adjusting the aperture of valve.
Description
Technical field
The utility model belongs to boiler ash removal technical field, is related to a kind of circulating fluidized bed boiler soot blower.
Background technique
Circulating fluidized bed boiler has high combustion efficiency, and few to coal point, coal adaptability is wide, including fat coal and poor quality
Coal.For most of current circulating fluidized bed boiler using colm (middle coal, spoil) and coal slime as main fuel, flying dust amount is big,
In operational process, when the flue gas with soot particle flows through boiler back end ductwork, easily cause boiler back end ductwork (including superheater, save
Coal device, air preheater) dust stratification it is more.Especially the burning amount of mixing of coal slime constantly increases in recent years, and higher ash is contained in coal slime
And moisture content, keep the dust stratification problem of boiler back end ductwork more prominent, corner and horizontal segment especially under final stage air preheater
A large amount of dust stratifications；A large amount of dust stratifications cause flow of flue gas space to reduce, and boiler negative pressure reduces, and maintain boiler negative pressure and load thus, just
Big air-introduced machine must be opened, so as to cause the increase of air-introduced machine load, energy consumption is increased for a long time, will affect boiler when serious just
Often operation, or even influence staff's personal safety.
Particle size of fly ash in circulating fluidized bed boiler tail flue gas is small, flow kinetic energy it is low be boiler tail dust stratification main original
Cause.Usually arrange that soot blower is to solve collecting ash in boiler tail in the prior art.Currently used soot blower has steaming
Vapour formula, sound wave type, shock wave type high three categories, but above-mentioned these types of soot blower investment is big, and operation and maintenance are difficult, and soot blowing is ineffective.
Utility model content
The purpose of the utility model is to provide a kind of circulating fluidized bed boiler soot blowers, are asked with solving the above-mentioned prior art
Topic.
To achieve the above object, the utility model provides the following technical solutions:
A kind of circulating fluidized bed boiler soot blower, including gas source, main line air entraining pipe, branch air entraining pipe, several gas blow pipes；
One end of main line air entraining pipe is connected to gas source, and the other end of main line air entraining pipe is connect with branch air entraining pipe front end；Branch air entraining pipe
It is arranged below circulating fluidized bed boiler junior air preheater and leans on boiler side, crosses circulating fluidized bed boiler back-end ductwork level and set
It sets；Branch air entraining pipe front end is arranged on the outside of circulating fluidized bed boiler, and branch bleed pipe end is arranged in circulating fluidized bed boiler
In back-end ductwork；Branch air entraining pipe is respectively equipped with several blow along branch air entraining pipe length direction cloth in boiler back end ductwork inner part
Tracheae.
Further, gas blow pipe is arranged diagonally downward, and the angle in gas blow pipe and boiler back end ductwork face is 60 °.
Further, branch air entraining pipe front end is provided with regulating valve.
Further, regulating valve is manual modulation valve.
Further, branch air entraining pipe includes upper branch air entraining pipe and lower branch air entraining pipe, is arranged on upper branch air entraining pipe
Upper gas blow pipe, is arranged lower gas blow pipe on lower branch air entraining pipe, and upper gas blow pipe and lower gas blow pipe interlock equidistant placement.
Further, gas source uses air compressor machine, and main line air entraining pipe is connected in pneumatics owner's gas main pipe.
Further, the size of main line air entraining pipe and branch air entraining pipe is DN50mm, and gas blow pipe is having a size of DN8mm.
Further, upper branch air entraining pipe and lower branch air entraining pipe vertical interval are 300mm, between adjacent gas blow pipe
Horizontal space is 500mm.
Further, the length of upper gas blow pipe or lower gas blow pipe is 0.6mm.
Further, upper gas blow pipe is arranged 18, and lower gas blow pipe is arranged 18.
A kind of operating method of circulating fluidized bed boiler soot blower, gas blow pipe export compressed air pressure according to recycle stream
The size for changing bed back-end ductwork inner product ash quantity clears up dust stratification according to following parameter:
(1) when dust stratification thickness is greater than 100mm, single gas blow pipe should be exported the pressure control of compressed air 0.16~
0.18MPa；
(2) when dust stratification thickness is in 50~100mm, the pressure that single gas blow pipe should be exported to compressed air is controlled 0.12
~0.16MPa；
(3) when dust stratification thickness is less than 50mm, single gas blow pipe should be exported the pressure control of compressed air 0.08~
0.12MPa。
Compared with the existing technology, it is had the beneficial effect that existing for the present invention
1, the utility model changes the design concept of existing soot blower, and the compressed air that air compressor machine generates is logical through piping
Enter in boiler, is blown afloat dust stratification by gas blow pipe moment spirt back-end ductwork, then the dust blown afloat is introduced by air-introduced machine and is removed
It is dusted in dirt device；It is by the collective effect of soot blower and air-introduced machine that boiler back end ductwork dust stratification complete liquidation is clean,
Achieve the purpose that thorough deashing.
2, it by the aperture of regulating valve, realizes and specific aim deashing is carried out to the position of different dust stratifications, ensure that ash-removal effect.
3, the utility model small investment, easy to operate, reliable for operation, maintenance is few, energy saving, and material is cheap.
Detailed description of the invention
Fig. 1 is circulating fluidized bed boiler soot blower schematic diagram.
Wherein, 1 gas source, 2 main line air entraining pipes, 3 ball valves, 4 regulating valves, branch air entraining pipe on 5,6 lower branch air entraining pipes, on 7
Gas blow pipe, 8 lower gas blow pipes, 9 boiler back end ductworks.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by.
Referring to Fig. 1, the utility model provides a kind of circulating fluidized bed boiler soot blower, including gas source 1, main line draw
Tracheae 2, branch air entraining pipe, several gas blow pipes.One end of main line air entraining pipe 2 connects gas source 1, before the other end and branch air entraining pipe
End connection；Ball valve 3 is provided on main line air entraining pipe 2, main line air entraining pipe 2 is arranged outside circulating fluidized bed boiler；Gas source 1 is using empty
Press, main line air entraining pipe 2 are connect with the main gas main pipe of air compressor machine；The setting of branch air entraining pipe is empty pre- in circulating fluidized bed boiler junior
Boiler side is leaned below device, and it is horizontally disposed to cross circulating fluidized bed boiler back-end ductwork 9；Branch air entraining pipe front end is arranged in recycle stream
On the outside of fluidized bed boiler, and it is provided with regulating valve 4, regulating valve 4 uses manual modulation valve；Branch bleed pipe end is arranged in recycle stream
Change in bed back-end ductwork, branch bleed pipe end is closed end；Branch air entraining pipe includes upper branch air entraining pipe 5 and lower branch bleed
Pipe 6, upper branch air entraining pipe 5 are arranged in parallel with lower branch air entraining pipe 6；Upper branch air entraining pipe 5 is in the ciculation fluidized tailstock of boiler tail
Cloth is respectively equipped with several upper gas blow pipes 7 to portion's flue inner part along its length；Lower branch air entraining pipe 6 is inside boiler back end ductwork
Cloth is respectively equipped with several lower gas blow pipes 8 point along its length；Upper gas blow pipe 7, lower gas blow pipe 8 tilt down setting and and boiler
The angle in back-end ductwork face is 60 °, upper gas blow pipe 7 and lower 8 interlaced arrangement of gas blow pipe and is equally spaced.
By taking 2 × 50MW circulating fluidized bed boiler soot blower as an example:
Air compressor machine mother-qi supervisor's air pressure is set as 0.5MPa, air uses plant air, and main line air entraining pipe 2 uses
The steel pipe of DN50mm, branch air entraining pipe use the steel pipe of DN50mm, the ordinary steel that branch air entraining pipe closed end uses with a thickness of 5mm
Plate plug；Ball valve 3 and regulating valve 4 match with corresponding pipeline respectively；It is sagging on upper branch air entraining pipe 5 and lower branch air entraining pipe 6
Straight distance is 300mm；The steel pipe of DN8mm is respectively adopted in upper gas blow pipe 7, lower gas blow pipe 8, and single air blowing length of tube is 0.6m, phase
Gas blow pipe 7 or 8 horizontal distance of lower gas blow pipe are respectively 500mm on neighbour, and upper gas blow pipe 7 is arranged 18, the lower setting of gas blow pipe 8 18
It is a.
The admission pressure of above-mentioned each gas blow pipe indicates:
Wherein, PIt is small-- indicate the average pressure of single gas blow pipe；
PGreatly-- indicate the pressure of main gas main pipe；
QGreatly-- indicate the air inflow that main gas main pipe passes through within the unit time；
QIt is small-- indicate the air inflow that single gas blow pipe passes through within the unit time；
18-indicate the total number of single gas blow pipe.
A kind of operating method of circulating fluidized bed boiler soot blower, gas blow pipe export compressed air pressure according to recycle stream
The size for changing bed back-end ductwork inner product ash quantity clears up dust stratification according to following parameter:
(1) when dust stratification thickness is greater than 100mm, single gas blow pipe should be exported the pressure control of compressed air 0.16~
0.18MPa。
(2) when dust stratification thickness is in 50~100mm, the pressure that single gas blow pipe should be exported to compressed air is controlled 0.12
~0.16MPa.
(3) when dust stratification thickness is less than 50mm, single gas blow pipe should be exported the pressure control of compressed air 0.08~
0.12MPa。
Claims (10)
1. a kind of circulating fluidized bed boiler soot blower, which is characterized in that including gas source (1), main line air entraining pipe (2), branch pass
Tracheae, several gas blow pipes；One end of main line air entraining pipe (2) is connected to gas source (1), the other end and branch of main line air entraining pipe (2)
The connection of air entraining pipe front end；Branch air entraining pipe, which is arranged below circulating fluidized bed boiler junior air preheater, leans on boiler side, crosses circulation
Fluidized-bed combustion boiler back-end ductwork (9) is horizontally disposed；Branch air entraining pipe front end is arranged on the outside of circulating fluidized bed boiler, branch bleed
Pipe end setting is in circulating fluidized bed boiler back-end ductwork (9)；Branch air entraining pipe is in boiler back end ductwork (9) inner part along branch
Pass air tubing length direction cloth is respectively equipped with several gas blow pipes.
2. a kind of circulating fluidized bed boiler soot blower according to claim 1, which is characterized in that gas blow pipe is diagonally downward
The angle in arrangement, gas blow pipe and boiler back end ductwork face is 60 °.
3. a kind of circulating fluidized bed boiler soot blower according to claim 1, which is characterized in that branch air entraining pipe front end
It is provided with regulating valve (4).
4. a kind of circulating fluidized bed boiler soot blower according to claim 3, which is characterized in that regulating valve (4) is hand
Dynamic regulating valve.
5. a kind of circulating fluidized bed boiler soot blower according to claim 1, which is characterized in that branch air entraining pipe includes
Upper gas blow pipe (7), lower branch bleed are arranged on upper branch air entraining pipe (5) for upper branch air entraining pipe (5) and lower branch air entraining pipe (6)
It manages and lower gas blow pipe (8) is set on (6), upper gas blow pipe (7) and lower gas blow pipe (8) are interlocked equidistant placement.
6. a kind of circulating fluidized bed boiler soot blower according to claim 1, which is characterized in that gas source uses pneumatics
Machine, main line air entraining pipe (2) are connected in pneumatics owner's gas main pipe.
7. a kind of circulating fluidized bed boiler soot blower according to claim 1, which is characterized in that main line air entraining pipe (2)
Size with branch air entraining pipe is DN50mm, and gas blow pipe is having a size of DN8mm.
8. a kind of circulating fluidized bed boiler soot blower according to claim 5, which is characterized in that upper branch air entraining pipe
It (5) is 300mm with lower branch air entraining pipe (6) vertical interval, the horizontal space between adjacent gas blow pipe is 500mm.
9. a kind of circulating fluidized bed boiler soot blower according to claim 5, which is characterized in that upper gas blow pipe (7) or
The length of lower gas blow pipe (8) is 0.6mm.
10. a kind of circulating fluidized bed boiler soot blower according to claim 5, which is characterized in that upper gas blow pipe (7) are set
18 are set, lower gas blow pipe (8) is arranged 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574612.1U CN209213893U (en) | 2018-09-26 | 2018-09-26 | A kind of circulating fluidized bed boiler soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574612.1U CN209213893U (en) | 2018-09-26 | 2018-09-26 | A kind of circulating fluidized bed boiler soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209213893U true CN209213893U (en) | 2019-08-06 |
Family
ID=67454876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821574612.1U Expired - Fee Related CN209213893U (en) | 2018-09-26 | 2018-09-26 | A kind of circulating fluidized bed boiler soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209213893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853842A (en) * | 2020-08-24 | 2020-10-30 | 岳阳永强机电设备有限公司 | Boiler soot blowing system based on high-sound-intensity medium-frequency sound wave soot blower |
-
2018
- 2018-09-26 CN CN201821574612.1U patent/CN209213893U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853842A (en) * | 2020-08-24 | 2020-10-30 | 岳阳永强机电设备有限公司 | Boiler soot blowing system based on high-sound-intensity medium-frequency sound wave soot blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Haidong Inventor after: Zong Tingquan Inventor before: Liu Haidong Inventor before: Zong Yanquan |
|
| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 Termination date: 20200926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |