CN205897127U - Circulating fluidized bed boiler fly ash energy -saving equipment that recycles - Google Patents
Circulating fluidized bed boiler fly ash energy -saving equipment that recycles Download PDFInfo
- Publication number
- CN205897127U CN205897127U CN201620876667.2U CN201620876667U CN205897127U CN 205897127 U CN205897127 U CN 205897127U CN 201620876667 U CN201620876667 U CN 201620876667U CN 205897127 U CN205897127 U CN 205897127U
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- Prior art keywords
- ash
- conveying pipe
- ash conveying
- storing bin
- valve
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a circulating fluidized bed boiler fly ash energy -saving equipment that recycles belongs to the circulation fluidized bed technology field, including furnace and ash hopper of dust collector, still include ashes storage silo, ash hopper of dust collector is connected through an ash conveying pipe to the ashes storage silo import, and furnace is connected through the 2nd ash conveying pipe to the ashes storage silo export, and the ashes storage silo upper end is equipped with the dust remover, and the ashes storage silo lower extreme is equipped with ash hopper of dust collector 1, is equipped with the charge level indicator on the ashes storage silo lateral wall, being equipped with into grey valve and ash conveying pipe electrically operated gate on the ash conveying pipe, being equipped with the frequency conversion feeder on the 2nd ash conveying pipe, the fan is connected to the frequency conversion feeder, and the 2nd ash conveying pipe goes up the position intercommunication that is close to furnace has the secondary air channel, is equipped with the valve on the 2nd ash conveying pipe between secondary air channel and the frequency conversion feeder, the charge level indicator, advance grey valve, ash conveying pipe electrically operated gate, frequency conversion feeder, fan, valve and connect the DCS switch board. This equipment had both been solved and has been returned the ash and be interrupted the problem, solved the problem of the combustion -supporting existence of flying dust again.
Description
Technical field
The utility model is related to a kind of CFBB fly ash reinjection energy-saving equipment, belongs to CFBB
Technical field.
Background technology
A large amount of flying dusts can be produced, existing flying dust is collected by dust collector ash hopper in CFBB running,
Then the flying dust in dust collector ash hopper is sent back to again by pipeline and in burner hearth, carry out the combustion-supporting continuous operation ensureing boiler.Existing
There is structure to be that dust collector ash hopper passes through pipeline and directly connects burner hearth, the situation of gray back interruption occurs in the course of work it is impossible to protect
Card continues combustion-supporting, reduces efficiency of combustion, and unburned carbon in flue dust height be CFBB the most normal produced problem, flying dust
Although serving combustion-supporting effect, ash can not be effectively increased, raising boiler circulating ratio, increasing productivity are not acted on,
Increased boiler abrasion on the contrary.
Utility model content
According to deficiency of the prior art above, the technical problems to be solved in the utility model is: provides a kind of recycle stream
Fluidized bed boiler fly ash reinjection energy-saving equipment, had both solved gray back discontinuous problem, solved the problems, such as that flying dust is combustion-supporting again.
CFBB fly ash reinjection energy-saving equipment described in the utility model, including burner hearth and burner hearth side
Some dust collector ash hoppers, also include ash-storing bin, and ash-storing bin import is passed through the first ash conveying pipe and connected dust collector ash hopper, and ash-storing bin goes out
Mouth connects burner hearth by the second ash conveying pipe, and ash-storing bin upper end is provided with deduster, and ash-storing bin lower end is provided with back-flushing valve, and back-flushing valve is even
Connect compressed air hose, ash-storing bin side wall is provided with level-sensing device；On first ash conveying pipe near ash-storing bin import position be provided with into
Grey valve, the first ash conveying pipe is provided with ash conveying pipe electrically operated gate, and the second ash conveying pipe is provided near the position of ash-storing bin outlet
Frequency conversion loader, frequency conversion loader connecting fan, on the second ash conveying pipe, the position near burner hearth is communicated with secondary air channel, secondary
The second ash conveying pipe between airduct and frequency conversion loader is provided with valve；Level-sensing device, enter grey valve, ash conveying pipe electrically operated gate, change
Frequency loader, blower fan, valve connect dcs switch board.
During work, the flying dust of dust collector ash hopper passes through the first ash conveying pipe and enters ash-storing bin, and ash-storing bin is independent additional
, it is ensured that uninterrupted gray back, the independent deduster of ash-storing bin top design installation is it is ensured that enter ash smoothly, bottom design is pacified for structure
Fill independent back-flushing valve, in prevention storehouse, the overstocked outflow of dust stratification is not smooth；Flying dust in ash-storing bin is adjusted to ash by frequency conversion loader
Amount, then passes through the second ash conveying pipe under the drive of blower fan and sends in burner hearth, secondary air channel is to feeding secondary in burner hearth simultaneously
Wind, increases heat transfer coefficient and the thermal efficiency of boiler；Enter grey valve, ash conveying pipe electrically operated gate, frequency conversion loader, blower fan, the letter of valve
Number access dcs system, realize Automated condtrol.
Preferably, secondary air channel is provided with volume control damper, and volume control damper connects dcs switch board, according to actual condition
The intake of adjust automatically secondary air channel.
Preferably, the deduster of ash-storing bin upper end is sack cleaner.
Preferably, blower fan is roots blower.
The utility model is compared with prior art had the beneficial effect that
CFBB flying dust recovery control device is simple and reasonable, and independent ash-storing bin ensures uninterruptedly to return
Ash, installs independent deduster and back-flushing valve ensures that flying dust is according to appropriate again the returning of boiler combustion demand into ash, ash discharge smoothness
Back boiler participates in recycle burning, had both reduced the combustible numerical value in flying dust, and increased the ash concentration of burner hearth, using dcs again
Centralized Control, it is possible to achieve automation is adjusted it is ensured that energy-saving effect reaches optimum level.
Brief description
Fig. 1 is structural representation of the present utility model.
In figure: 1, burner hearth；2nd, dust collector ash hopper；3rd, the first ash conveying pipe；4th, deduster；5th, enter grey valve；6th, ash conveying pipe
Electrically operated gate；7th, level-sensing device；8th, dcs switch board；9th, blower fan；10th, frequency conversion loader；11st, back-flushing valve；12nd, ash-storing bin；13rd, second
Ash conveying pipe；14th, valve；15th, secondary air channel；16th, volume control damper.
Specific embodiment
Below in conjunction with the accompanying drawings embodiment of the present utility model is described further:
As shown in figure 1, CFBB fly ash reinjection energy-saving equipment includes some of burner hearth 1 and burner hearth 1 side
Dust collector ash hopper 2, also includes ash-storing bin 12, and ash-storing bin 12 import connects dust collector ash hopper 2, storage ash by the first ash conveying pipe 3
Storehouse 12 outlet connects burner hearth 1 by the second ash conveying pipe 13, and ash-storing bin 12 upper end is provided with deduster 4, and ash-storing bin 12 lower end is provided with
Back-flushing valve 11, back-flushing valve 11 connects compressed air hose, and ash-storing bin 12 side wall is provided with level-sensing device 7；Close on first ash conveying pipe 3
The position of ash-storing bin 12 import is provided with into grey valve 5, and the first ash conveying pipe 3 is provided with ash conveying pipe electrically operated gate 6, the second ash conveying pipe
It is provided with frequency conversion loader 10, frequency conversion loader 10 connecting fan 9, the second ash conveying pipe near the position of ash-storing bin 12 outlet on 13
On 13, the position near burner hearth 1 is communicated with secondary air channel 15, the second ash pipeline between secondary air channel 15 and frequency conversion loader 10
Road 13 is provided with valve 14；Level-sensing device 7, enter grey valve 5, ash conveying pipe electrically operated gate 6, frequency conversion loader 10, blower fan 9, valve 14 even
Connect dcs switch board 8.
Secondary air channel 15 is provided with volume control damper 16, and volume control damper 16 connects dcs switch board 8, and Secondary Air increases and flies
The time of staying in burner hearth 1 for the ash.
The deduster 4 of ash-storing bin 12 upper end is sack cleaner.
Blower fan 9 is roots blower.
During work, the flying dust of dust collector ash hopper 2 enters ash-storing bin 12 by the first ash pipeline 3 road, additional ash-storing bin 12
Can ensure that uninterrupted gray back, deduster 4 and back-flushing valve 11 ensure into ash, ash discharge smoothly, height of materials letter in level-sensing device 7 prompting storehouse
Breath；Flying dust in ash-storing bin 12 adjusts to ash quantity by frequency conversion loader 10, then passes through the second defeated ash under the drive of blower fan 9
Pipeline 13 is sent in burner hearth 1, and secondary air channel 15 is to feeding secondary wind in burner hearth 1 simultaneously；Level-sensing device 7, enter grey valve 5, ash conveying pipe
Electrically operated gate 6, frequency conversion loader 10, blower fan 9, valve 14 signal access dcs system, realize Automated condtrol, can remote control,
Also can control on the spot.
This equipment investment run after, both supplemented in right amount the ash concentration within burner hearth, increased heating surface, burnt time ash
In unnecessary carbon, and then improve boiler heat-transfer coefficient, reached the effect economized on coal, coal saving rate is guarded and reached more than 2%, and carries
Rise boiler on-load ability, increased the thermal efficiency.
Claims (4)
1. a kind of CFBB fly ash reinjection energy-saving equipment, including some dedustings of burner hearth (1) and burner hearth (1) side
Device ash bucket (2) it is characterised in that: also include ash-storing bin (12), ash-storing bin (12) import pass through the first ash conveying pipe (3) connect remove
Dirt device ash bucket (2), ash-storing bin (12) outlet connects burner hearth (1) by the second ash conveying pipe (13), and ash-storing bin (12) upper end is provided with
Deduster (4), ash-storing bin (12) lower end is provided with back-flushing valve (11), and back-flushing valve (11) connects compressed air hose, ash-storing bin (12) side
Wall is provided with level-sensing device (7)；The upper position near ash-storing bin (12) import of first ash conveying pipe (3) is provided with into grey valve (5), and first
Ash conveying pipe (3) is provided with ash conveying pipe electrically operated gate (6), the upper position exporting near ash-storing bin (12) of the second ash conveying pipe (13)
It is provided with frequency conversion loader (10), frequency conversion loader (10) connecting fan (9), the second ash conveying pipe (13) is above near burner hearth (1)
Position is communicated with secondary air channel (15), and the second ash conveying pipe (13) between secondary air channel (15) and frequency conversion loader (10) sets
There is valve (14)；Level-sensing device (7), enter grey valve (5), ash conveying pipe electrically operated gate (6), frequency conversion loader (10), blower fan (9), valve
(14) connect dcs switch board (8).
2. CFBB fly ash reinjection energy-saving equipment according to claim 1 it is characterised in that: described two
Secondary airduct (15) is provided with volume control damper (16), and volume control damper (16) connects dcs switch board (8).
3. CFBB fly ash reinjection energy-saving equipment according to claim 1 it is characterised in that: described storage
The deduster (4) of ash silo (12) upper end is sack cleaner.
4. CFBB fly ash reinjection energy-saving equipment according to claim 1 it is characterised in that: described wind
Machine (9) is roots blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876667.2U CN205897127U (en) | 2016-08-12 | 2016-08-12 | Circulating fluidized bed boiler fly ash energy -saving equipment that recycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876667.2U CN205897127U (en) | 2016-08-12 | 2016-08-12 | Circulating fluidized bed boiler fly ash energy -saving equipment that recycles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205897127U true CN205897127U (en) | 2017-01-18 |
Family
ID=57781053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620876667.2U Expired - Fee Related CN205897127U (en) | 2016-08-12 | 2016-08-12 | Circulating fluidized bed boiler fly ash energy -saving equipment that recycles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205897127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152121A (en) * | 2016-08-12 | 2016-11-23 | 淄博弘科电力设备有限公司 | CFBB fly ash reinjection energy-saving equipment |
| CN111878801A (en) * | 2020-08-31 | 2020-11-03 | 北京永博洁净科技有限公司 | Fly ash circulating device and circulating fluidized bed boiler comprising same |
-
2016
- 2016-08-12 CN CN201620876667.2U patent/CN205897127U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152121A (en) * | 2016-08-12 | 2016-11-23 | 淄博弘科电力设备有限公司 | CFBB fly ash reinjection energy-saving equipment |
| CN111878801A (en) * | 2020-08-31 | 2020-11-03 | 北京永博洁净科技有限公司 | Fly ash circulating device and circulating fluidized bed boiler comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20210812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |