CN209701800U - Differential pressure type economizer fly ash carry device - Google Patents
Differential pressure type economizer fly ash carry device Download PDFInfo
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- CN209701800U CN209701800U CN201920366343.8U CN201920366343U CN209701800U CN 209701800 U CN209701800 U CN 209701800U CN 201920366343 U CN201920366343 U CN 201920366343U CN 209701800 U CN209701800 U CN 209701800U
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- conveying pipe
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Abstract
Differential pressure type economizer fly ash carry device, it is characterized by: being disposed with economizer in the boiler vertical gas pass, the exhanst gas outlet of economizer is connect by flue with SCR denitration device, SCR denitration device is connect with air preheater gas inlet, and air preheater exhanst gas outlet is connect by flue with deduster import；The outlet of the economizer hopper is equipped with flange, ash bucket outlet(discharge) flange and upper connector upper end flanged joint, the lower end and manual inserting plate door upper end flanged joint of upper connector, the lower end head flange of manual inserting plate door and the upper end flanged joint of lower connector, the lower end of lower connector and an end of threaded expander device are welded；Another end of threaded expander device and one end of channel bend are welded, and the other end of channel bend and an end of ash conveying pipe are welded, and other end outlet and the deduster gas approach of ash conveying pipe weld.
Description
Technical field
Originally practical to be related to flying dust technical field more particularly to a kind of differential pressure type economizer in large-sized station boiler tail flue gas
Fly ash carry device.
Background technique
Generally ash bucket is arranged in the steering stack base of boiler economizer in modern large-size thermal power plant, collects centrifugal force point
From dust, then pumped by pneumatic transporting ash cellar or hydraulic flushing ash case be sent to grey library either slag runner.Economizer ash-transmission system with
It is connected between grey library by ash conveying pipe, dust is sent in grey library by the compressed gas of compressed air cylinder and is stored, due to hair
The grey library of power plant apart from boiler farther out, and economizer separation after dust particles it is thicker, easy plugging, failure rate in transmission process
Height, it is both uneconomical or unstable.It is the system that Ash water is carried out as medium using water, by arranging there are also a kind of ash trench system
Grey ditch, ash conveying pipe and its attachment composition.Major defect existing for wet ash transportation is: after lime-ash is mixed with water, contained by lime-ash
The substances such as calcium oxide, silica will also cause to change, and activity reduces, and be unfavorable for the comprehensive utilization of lime-ash；Calcium oxide in lime-ash
When content is higher, dirty dirt is easily formed in ash pipe, blocks ash pipe, it is difficult to remove；Except buck mixes mostly with lime-ash in alkalinity, pH value
More than the emission regulation of Industrial " three Waste ", environmental pollution is caused, recycling or treatment measures require very high equipment investment and fortune
Row expense；After buck enters Slag-water system, drainage bin filtration system can be blocked, influences dewatering system normal operation.For ability
For the technical staff in domain, a kind of economical and energy saving how is designed, the good system of dedusting effect is to need the technology solved to ask at present
Topic.
Summary of the invention
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of differential pressure type province coal
Device fly ash carry device, the device are added after SCR facility using boiler, and there are 1500 between economizer and deduster
The flyash of economizer hopper is fed directly to deduster, not consumed additional by the differential pressure of~2000pa as defeated grey power
Operation energy consumption.
The technical solution of the utility model is: differential pressure type economizer fly ash carry device, including economizer, economizer ash
Bucket, manual inserting plate door, bellow expander, denitrification apparatus, flue, ash conveying pipe, deduster gas approach, air preheater；Its
It is characterized in that: being disposed with economizer in the boiler vertical gas pass, the exhanst gas outlet of economizer passes through flue and SCR denitration device
Connection, SCR denitration device are connect with air preheater gas inlet, and air preheater exhanst gas outlet is connect by flue with deduster import；
The outlet of the economizer hopper is equipped with flange, ash bucket outlet(discharge) flange and upper connector upper end flanged joint, upper connector
Lower end and manual inserting plate door upper end flanged joint, the lower end head flange of manual inserting plate door and the upper end head flange of lower connector
Connection, the lower end of lower connector and an end of threaded expander device are welded；Another end of threaded expander device and channel bend
One end welding, an end of the other end of channel bend and ash conveying pipe welds, the other end outlet and dedusting of ash conveying pipe
The welding of device gas approach.
The ash conveying pipe connected between threaded expander device and electric precipitator described in the utility model is equipped with not less than 6 °
Inclination angle.
Ash conveying pipe described in the utility model is fixed on boiler steel frame using " U " anchor ear of multiple same size models
On, each " U " anchor ear setting spacing is 3 meters (not drawing in figure).
Ash conveying pipe diameter described in the utility model is 108mm~133mm.
Manual inserting plate door described in the utility model, threaded expander device, " U " anchor ear are the metal works of outsourcing.
The utility model beneficial effect is: a kind of differential pressure type economizer fly ash carry device, which added in boiler
After SCR denitration device, using there are the differential pressures of 1500~2000pa between economizer and deduster as defeated grey power, around
Crossed denitrification apparatus, sky removes pre-heater apparatus, the flyash of economizer hopper is not sent outside, but by the powder of economizer hopper
Coal ash is fed directly to deduster, does not consume additional operation energy consumption.
Detailed description of the invention
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
Fig. 1 is the utility model structure diagram.
Fig. 2 is Fig. 1 manual inserting plate door mounting structure schematic diagram.
In fig. 1 and 2,1. boiler vertical gas pass, 2. economizers, 3. economizer tobacco pipes, 4. manual inserting plate doors, 5. screw threads
Expander, 6. exhanst gas outlets, 7.SCR denitrification apparatus, 8. defeated grey flues, 9. air preheaters, 10. deduster gas approach, on 11a.
Connecting tube, 11b. lower connector, 12. bend pipes.
Specific embodiment
The utility model embodiment is as depicted in figs. 1 and 2, and economizer 2, economizer 2 are disposed in boiler vertical gas pass 1
Exhanst gas outlet 6 connect with SCR denitration device 7 by flue, SCR denitration device 7 is connect with the gas inlet of air preheater 9, sky
The exhanst gas outlet of pre- device 9 is connect by flue with the import of deduster 10；Flange, ash bucket 3 are equipped in the outlet of economizer hopper 3
Outlet(discharge) flange and upper connector 11a upper end flanged joint, the lower end of upper connector 11a and the upper end of manual inserting plate door 4
Flanged joint, the lower end head flange of manual inserting plate door 4 and the upper end flanged joint of lower connector, the lower end of lower connector with
It welds one end of threaded expander device 5；Another end of threaded expander device 5 and one end of channel bend 12 are welded, channel bend
12 other end and an end of ash conveying pipe 8 are welded, and another end of ash conveying pipe 8 and deduster gas approach 10 weld.
In the utility model embodiment, the upper end flanged joint of 3 outlet(discharge) flange of ash bucket and upper connector 11a, on
The lower end of connecting tube 11a and the upper end flanged joint of manual inserting plate door 4, the lower end head flange of manual inserting plate door 4 and lower company
The upper end flanged joint of adapter tube, these connections are all made of bolt and are attached fastening.
In the utility model embodiment, the ash pipeline that is connected between threaded expander device 5 and deduster gas approach 10
Road 8 is equipped with the inclination angle not less than 6 °.
In the utility model embodiment, ash conveying pipe 8 is fixed on using " U " anchor ear of multiple same size models
On boiler steel frame, each " U " anchor ear setting spacing is 3 meters (not drawing in figure).
The ash conveying pipe diameter that the utility model uses is 108mm~133mm.
Manual inserting plate door, threaded expander device, " U " anchor ear of the utility model use are the metal works of outsourcing.
The working principle of the utility model is:
In boiler vertical gas pass 1, dust is settled in 2 outlet at bottom of economizer through centrifugal force separate flue dust, is collected in province
Coal device ash bucket 3, after adding SCR denitration device because of boiler, SCR denitration device, air preheater drag overall are up to 1500~2000pa
It is even higher, that is, there are the differential pressures of 1500~2000pa between economizer and deduster.The dust of economizer hopper exists
Under the driving of this segment difference pressure, the upper connector 11a that is exported through ash bucket 3, manual inserting plate door 4, threaded expander device 5, channel bend 12,
Ash conveying pipe 8, deduster gas approach 10 enter deduster, complete the conveying of dust.
Claims (5)
1. differential pressure type economizer fly ash carry device, including boiler vertical gas pass, economizer, economizer hopper, manual inserting plate door,
Bellow expander, denitrification apparatus, flue, ash conveying pipe, deduster gas approach, air preheater；It is characterized by: the pot
Economizer is disposed in furnace vertical gas pass, the exhanst gas outlet of economizer is connect by flue with SCR denitration device, SCR denitration dress
It sets and is connect with air preheater gas inlet, air preheater exhanst gas outlet is connect by flue with deduster import；The economizer hopper
Outlet be equipped with flange, ash bucket outlet(discharge) flange and upper connector upper end flanged joint and are inserted the lower end of upper connector manually
Plate door upper end flanged joint, the lower end head flange of manual inserting plate door and the upper end flanged joint of lower connector, lower connector
Lower end and threaded expander device an end weld；Another end of threaded expander device and one end of channel bend are welded, pipe
The other end of road elbow and an end of ash conveying pipe are welded, and other end outlet and the deduster gas approach of ash conveying pipe weld
It connects.
2. differential pressure type economizer fly ash carry device according to claim 1, it is characterised in that: threaded expander device is removed with electricity
The ash conveying pipe connected between dirt device is equipped with the inclination angle not less than 6 °.
3. differential pressure type economizer fly ash carry device according to claim 1, it is characterised in that: ash conveying pipe is using multiple
" U " anchor ear of same size model is fixed on boiler steel frame, and each " U " anchor ear setting spacing is 3 meters.
4. differential pressure type economizer fly ash carry device according to claim 1, it is characterised in that: ash conveying pipe diameter is
108mm~133mm.
5. differential pressure type economizer fly ash carry device according to claim 1, it is characterised in that: manual inserting plate door, screw thread
Expander, " U " anchor ear are the metal works of outsourcing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366343.8U CN209701800U (en) | 2019-03-22 | 2019-03-22 | Differential pressure type economizer fly ash carry device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366343.8U CN209701800U (en) | 2019-03-22 | 2019-03-22 | Differential pressure type economizer fly ash carry device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209701800U true CN209701800U (en) | 2019-11-29 |
Family
ID=68645074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920366343.8U Active CN209701800U (en) | 2019-03-22 | 2019-03-22 | Differential pressure type economizer fly ash carry device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209701800U (en) |
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2019
- 2019-03-22 CN CN201920366343.8U patent/CN209701800U/en active Active
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