CN207298916U - A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system - Google Patents
A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system Download PDFInfo
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- CN207298916U CN207298916U CN201721287094.0U CN201721287094U CN207298916U CN 207298916 U CN207298916 U CN 207298916U CN 201721287094 U CN201721287094 U CN 201721287094U CN 207298916 U CN207298916 U CN 207298916U
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- Prior art keywords
- flue gas
- gas extraction
- extraction channel
- fluidized bed
- bed boiler
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Abstract
A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system, is equipped with a flue gas fairlead, flue gas fairlead is connected with back-end ductwork at the top of separation material returning device；A partition plate is equipped with the middle part of the flue gas fairlead, flue gas fairlead is divided into the first flue gas extraction channel and the second flue gas extraction channel by partition plate, and soot blower is equipped with the first flue gas extraction channel or the second flue gas extraction channel；Channel switch is equipped with the front end of flue gas fairlead, when the channel switch make it that a passage in the first flue gas extraction channel and the second flue gas extraction channel is opened, another passage is closed.The system design is reasonable, pipeline in flue gas fairlead is divided into two different flue gas extraction channels, and soot blower is set in a passage, so that the dust stratification that by circulating fluidized bed boiler soot blowing when blows off removes in this flue passage, greatly reduce the grey throughput of each heating surface in downstream.
Description
Technical field：
It the utility model is related to a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system.
Background technology：
Circulating fluidized bed boiler using biomass as fuel, due to being rich in the alkalinous metals such as potassium, sodium member in biomass fuel
High temperature corrosion easily occurs for element and chlorine element, the ash after biomass combustion.In the prior art, biomass boiler heating surfaces at different levels are all
It is arranged in a vertical flue, one ash bucket only is set in exhanst gas outlet.During boiler operatiopn, the bulk that soot blower is blown off bonds
Dust stratification reaches the ash bucket of smoke outlet by flue, this results in burner hearth and the dust stratification of flue passes through each heating surface successively,
This can cause each heating surface to have larger abrasion, and be very easy to occur serious dust stratification at heating surface, so as to cause to conduct heat
Efficiency substantially reduces.The prior art does not have this plan of solution.
Utility model content：
The utility model is in order to make up for the deficiencies of the prior art, there is provided a kind of biomass high-temperature super-pressure recirculating fluidized bed
Boiler flue ash disposal system, its system design is reasonable, can greatly reduce dust stratification, solve problems of the prior art.
The utility model is that technical solution is used by solving above-mentioned technical problem：
A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system, including recirculating fluidized bed burner hearth and point
From material returning device, a flue gas fairlead is equipped with the top of separation material returning device, flue gas fairlead is connected with back-end ductwork；The flue gas
A partition plate is equipped with the middle part of fairlead, flue gas fairlead is divided into the first flue gas extraction channel and the second flue gas extraction channel by partition plate,
Soot blower is equipped with the first flue gas extraction channel or the second flue gas extraction channel, the first flue gas where the soot blower is drawn
The second dust stratification hopper is correspondingly arranged outside passage or the second flue gas extraction channel；Channel switch is equipped with the front end of flue gas fairlead,
When the channel switch make it that a passage in the first flue gas extraction channel and the second flue gas extraction channel is opened, another
Passage is closed.
Preferably, the channel switch is a baffle, and the baffle closes on the side for separating material returning device with partition plate by one
Shaft is connected, and shaft is connected with the power output end of a motor.
Preferably, the channel switch is a baffle, and the baffle is equipped with some liftings for being used for lifting the baffle
Bar, the lift lever are connected with the output terminal of motor.
Preferably, the lift lever is equipped with screw thread, and the output terminal of the motor is equipped with worm gear, the worm gear and lifting
Bar engagement is connected.
Preferably, superheater, reheater, economizer, air preheater are sequentially arranged along flue gas flow direction in back-end ductwork
And deduster.
Preferably, it is equipped with the first dust stratification hopper in the bottom of back-end ductwork.
Using the above scheme, system design is reasonable for the utility model, and the pipeline in flue gas fairlead is divided into two differences
Flue gas extraction channel, and soot blower is set in a passage, so that the dust stratification that by circulating fluidized bed boiler soot blowing when blows off
Removed in this flue passage, greatly reduce the grey throughput of each heating surface in downstream, reduce downstream dust stratification degree, reduce abrasion simultaneously
And heat exchange efficiency is improved, achieve the purpose that energy saving；Another flue is switched back into again when normal production, reduces flue gas stream resistance,
Improve production efficiency.
Brief description of the drawings：
Fig. 1 is the schematic diagram for the channel switch that the utility model sets shaft type.
Fig. 2 is the schematic diagram for the channel switch that the utility model sets lift lever type.
Fig. 3 is provided with the lift lever partial schematic diagram of two lifting lever systems.
In figure, 1, recirculating fluidized bed burner hearth, 2, separation material returning device, 3, back-end ductwork, 4, partition plate, the 5, first flue gas is drawn logical
Road, the 6, second flue gas extraction channel, 7, soot blower, 8, baffle, 9, shaft, 10, motor, 11, lift lever, 12, superheater, 13,
Reheater, 14, economizer, 15, air preheater, 16, deduster, the 17, first dust stratification hopper, the 18, second dust stratification hopper, 19,
Worm gear.
Embodiment：
In order to clarify the technical characteristics of the invention, below by embodiment, and its attached drawing is combined, to this reality
It is described in detail with new.
As shown in Figs. 1-3, a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system, including recycle stream
Change pool furnace thorax 1 and separation material returning device 2, a flue gas fairlead, flue gas fairlead and afterbody cigarette are equipped with the top of separation material returning device 2
Road 3 is connected；A partition plate 4 is equipped with the middle part of the flue gas fairlead, flue gas fairlead is divided into the first flue gas extraction channel 5 by partition plate 4
With the second flue gas extraction channel 6, soot blower 7 is equipped with the first flue gas extraction channel 5 or the second flue gas extraction channel 6, it is described
The the two the first dust stratification hoppers are correspondingly arranged outside the first flue gas extraction channel 5 or the second flue gas extraction channel 6 where soot blower 7；
Channel switch is equipped with the front end of flue gas fairlead, the channel switch causes the first flue gas extraction channel 5 and the second flue gas to draw
When the passage gone out in passage 6 is opened, another passage is closed.Drawn using the first flue gas extraction channel 5 and the second flue gas
Go out the mode of the alternation switch of passage 6, the generation of the dangerous working conditions such as exhaust gases passes whole closing can be avoided, improve whole system
Security performance.
The channel switch is a baffle 8, and the baffle 8 is closed on partition plate 4 to be separated the side of material returning device 2 and pass through a shaft
9 are connected, and shaft 9 is connected with the power output end of a motor 10.
The channel switch is a baffle 8, and the baffle 8 is equipped with some lift levers 11 for being used for lifting the baffle 8,
The lift lever 11 is connected with the output terminal of motor 10.
The lift lever 11 is equipped with screw thread, and the output terminal of the motor 10 is equipped with worm gear 19, the worm gear and lifting
The engagement of bar 11 is connected.Whether which kind of form is used, groove can be set with 8 corresponding position of baffle in flue, to improve
Sealing performance, and 8 position offset of anti-baffle plate.Above two mode is removed, linked switch set-up mode is also very much, such as profit
Switch set with automatic control mode control on the first flue gas extraction channel 5 and the second flue gas extraction channel 6 etc..
In back-end ductwork 3 superheater 12, reheater 13, economizer 14, air preheater are sequentially arranged along flue gas flow direction
15 and deduster 16.
The first dust stratification hopper 17 is equipped with the bottom of back-end ductwork 3.Accumulative removal for dust stratification in back-end ductwork 3.
In use, the flue gas of the generation of recirculating fluidized bed burner hearth 1 and the particulate matter taken out of enter separation material returning device 2, greatly
Partial particulate matter all returns to recirculating fluidized bed burner hearth 1 by separation returning charge, and flue gas enters flue gas fairlead, soot blowing or its
In the case that particle is more in flue gas in his flue gas fairlead, flue gas is incorporated into the first flue gas containing soot blower 7 and drawn and is led to
5 or second flue gas extraction channel 6 of road, the dust stratification in soot blower 7 are discharged by dust stratification device ash bucket, then the cigarette after purification
Gas enters back into back-end ductwork 3 and completes to exchange heat with superheater 12, reheater 13, economizer 14, air preheater 15；If flue gas ratio
It is purer, or in above-mentioned exhaust gases passes 7 ash discharge of soot blower maintenance when, flue gas is incorporated into another passage, is entered back into
Back-end ductwork 3 is completed to exchange heat with superheater 12, reheater 13, economizer 14, air preheater 15.
Above-mentioned embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all fall within the guarantor of the utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (6)
- A kind of 1. biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system, it is characterised in that：Including ciculation fluidized Pool furnace thorax and separation material returning device, a flue gas fairlead, flue gas fairlead and back-end ductwork phase are equipped with the top of separation material returning device Even；A partition plate is equipped with the middle part of the flue gas fairlead, flue gas fairlead is divided into the first flue gas extraction channel and the second cigarette by partition plate Gas extraction channel, is equipped with soot blower in the first flue gas extraction channel or the second flue gas extraction channel, where the soot blower The second dust stratification hopper is correspondingly arranged outside first flue gas extraction channel or the second flue gas extraction channel；Set in the front end of flue gas fairlead There is channel switch, the channel switch causes a passage in the first flue gas extraction channel and the second flue gas extraction channel to open When, another passage is closed.
- 2. a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system according to claim 1, it is special Sign is：The channel switch is a baffle, and the baffle is closed on partition plate to be separated the side of material returning device and be connected by a shaft, Shaft is connected with the power output end of a motor.
- 3. a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system according to claim 1, it is special Sign is：The channel switch is a baffle, and the baffle is equipped with some lift levers for being used for lifting the baffle, described to carry Rising stem is connected with the output terminal of motor.
- 4. a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system according to claim 3, it is special Sign is：The lift lever is equipped with screw thread, and the output terminal of the motor is equipped with worm gear, and the worm gear engages phase with lift lever Even.
- 5. a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system according to claim 1, it is special Sign is：In back-end ductwork superheater, reheater, economizer, air preheater and deduster are sequentially arranged along flue gas flow direction.
- 6. a kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system according to claim 5, it is special Sign is：The first dust stratification hopper is equipped with the bottom of back-end ductwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287094.0U CN207298916U (en) | 2017-09-30 | 2017-09-30 | A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287094.0U CN207298916U (en) | 2017-09-30 | 2017-09-30 | A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207298916U true CN207298916U (en) | 2018-05-01 |
Family
ID=62413446
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721287094.0U Expired - Fee Related CN207298916U (en) | 2017-09-30 | 2017-09-30 | A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system |
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| CN (1) | CN207298916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606608A (en) * | 2017-09-30 | 2018-01-19 | 山东琦泉能源科技有限公司 | A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system |
-
2017
- 2017-09-30 CN CN201721287094.0U patent/CN207298916U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606608A (en) * | 2017-09-30 | 2018-01-19 | 山东琦泉能源科技有限公司 | A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system |
| CN107606608B (en) * | 2017-09-30 | 2024-06-14 | 刘伟 | Biomass high-temperature ultrahigh-pressure circulating fluidized bed boiler flue ash removal system |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20200930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |