CN205897128U - Circulating fluidized bed boiler fly ash retrieves controlling means - Google Patents
Circulating fluidized bed boiler fly ash retrieves controlling means Download PDFInfo
- Publication number
- CN205897128U CN205897128U CN201620876695.4U CN201620876695U CN205897128U CN 205897128 U CN205897128 U CN 205897128U CN 201620876695 U CN201620876695 U CN 201620876695U CN 205897128 U CN205897128 U CN 205897128U
- Authority
- CN
- China
- Prior art keywords
- ash
- conveying pipe
- ash conveying
- frequency conversion
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a circulating fluidized bed boiler fly ash retrieves controlling means belongs to the circulation fluidized bed technology field, a plurality of ash hopper of dust collector including furnace and furnace one side still include ashes storage silo, and an ash conveying pipe connects ashes storage silo's import, and the 2nd ash conveying pipe connects ashes storage silo's export, is equipped with into grey valve and ash conveying pipe electrically operated gate on the ash conveying pipe, is equipped with the frequency conversion feeder on the 2nd ash conveying pipe, and the fan is connected to the frequency conversion feeder, and the 2nd ash conveying pipe goes up the intercommunication 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, advance grey valve, ash conveying pipe electrically operated gate, frequency conversion feeder, fan, valve connection DCS switch board. The device simple structure is reasonable, has both reduced the combustible substance numerical value in the flying dust, has increased furnace's ash concentration again, adopts DCS centralized control, can realize automatic the regulation, guarantees that energy -conserving effect reaches best level.
Description
Technical field
The utility model is related to a kind of CFBB flying dust recovery control device, belongs to CFBB skill
Art field.
Background technology
A large amount of flying dusts can be produced, existing fly ash carry device is simply by deduster in CFBB running
Flying dust in ash bucket sends back to the continuous operation carrying out combustion-supporting guarantee boiler in burner hearth again.But unburned carbon in flue dust height is circulation
The most normal produced problem of fluidized-bed combustion boiler, although flying dust serves combustion-supporting effect, can not be effectively increased ash, to raising pot
Stove circulating ratio, increasing productivity do not act on, and increased boiler abrasion on the contrary, thus the flying dust device to CFBB
Improved, the very flexible of regulation and control after improvement, impact is normal to be used.
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 flying dust recovery control device, had both solved the problems, such as that flying dust was combustion-supporting, solved the problems, such as that automation is adjusted again.
CFBB flying dust recovery control device described in the utility model, if including burner hearth and burner hearth side
Dry dust collector ash hopper, also includes ash-storing bin, and some dust collector ash hoppers connect the first ash conveying pipe, and burner hearth connects the second ash pipeline
Road, the first ash conveying pipe connects the import of ash-storing bin, and the second ash conveying pipe connects the outlet of ash-storing bin, the first ash conveying pipe leans on
The position of nearly ash-storing bin import is provided with into grey valve, and the first ash conveying pipe is provided with ash conveying pipe electrically operated gate, on the second ash conveying pipe
It is provided with frequency conversion loader near the position of ash-storing bin outlet, frequency conversion loader connecting fan, near burner hearth on the second ash conveying pipe
Position be communicated with secondary air channel, the second ash conveying pipe between secondary air channel and frequency conversion loader is provided with valve；Enter grey valve,
Ash conveying pipe electrically operated gate, frequency conversion 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 flying dust in ash-storing bin adjusts to ash quantity by frequency conversion loader structure, then in the drive of blower fan
Pass through down the second ash conveying pipe and send in burner hearth, secondary air channel, to feeding secondary wind in burner hearth, increases the heat transfer system of boiler simultaneously
Number and the thermal efficiency；Enter the signal access dcs system of grey valve, ash conveying pipe electrically operated gate, frequency conversion loader, blower fan, valve, realize certainly
Dynamicization controls.
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, 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, flying dust participates in recycle burning according to the appropriate boiler that returns to of boiler combustion demand, has both reduced flammable in flying dust
Thing numerical value, increased the ash concentration of burner hearth again, using dcs centralized Control, it is possible to achieve automation is adjusted it is ensured that energy-saving effect reaches
To 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, enter grey valve；5th, ash conveying pipe electrically operated gate；6、
Dcs switch board；7th, blower fan；8th, frequency conversion loader；9th, ash-storing bin；10th, the second ash conveying pipe；11st, valve；12nd, secondary air channel；
13rd, 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 flying dust recovery control device includes burner hearth 1 and some the removing of burner hearth 1 side
Dirt device ash bucket 2, also includes ash-storing bin 9, and some dust collector ash hoppers 2 connect the first ash conveying pipe 3, and burner hearth 1 connects the second ash pipeline
Road 10, the first ash conveying pipe 3 connects the import of ash-storing bin 9, and the second ash conveying pipe 10 connects the outlet of ash-storing bin 9, the first defeated ash
On pipeline 3, the position near ash-storing bin 9 import is provided with into grey valve 4, and the first ash conveying pipe 3 is provided with ash conveying pipe electrically operated gate 5, the
It is provided with frequency conversion loader 8 near the position of ash-storing bin 9 outlet on two ash conveying pipes 10, frequency conversion loader 8 connecting fan 7, second
On ash conveying pipe 10, the position near burner hearth 1 is communicated with secondary air channel 12, second between secondary air channel 12 and frequency conversion loader 8
Ash conveying pipe 10 is provided with valve 11；Enter grey valve 4, ash conveying pipe electrically operated gate 5, frequency conversion loader 8, blower fan 7, valve 11 connect
Dcs switch board 6.
Secondary air channel 12 is provided with volume control damper 13, and volume control damper 13 connects dcs switch board 6.
Blower fan 7 is roots blower.
During work, the flying dust of dust collector ash hopper 2 enters ash-storing bin 9, the flying dust in ash-storing bin 9 by the first ash pipeline 3 road
Adjust to ash quantity by frequency conversion loader 8, then sent in burner hearth 1 by the second ash conveying pipe 10 under the drive of blower fan 7, with
When secondary air channel 12 to feeding secondary wind in burner hearth 1；Dcs system controls into grey valve 4, ash conveying pipe electrically operated gate 5, frequency conversion loader
8th, blower fan 7, valve 11 and volume control damper 13, realize Automated condtrol.
Claims (3)
1. a kind of CFBB flying dust recovery control device, including some dedusters of burner hearth (1) and burner hearth (1) side
Ash bucket (2) it is characterised in that: also include ash-storing bin (9), some dust collector ash hoppers (2) connect the first ash conveying pipe (3), burner hearth
(1) connect the second ash conveying pipe (10), the first ash conveying pipe (3) connects the import of ash-storing bin (9), the second ash conveying pipe (10) is even
Connect the outlet of ash-storing bin (9), the upper position near ash-storing bin (9) import of the first ash conveying pipe (3) is provided with into grey valve (4), first
Ash conveying pipe (3) is provided with ash conveying pipe electrically operated gate (5), the upper position exporting near ash-storing bin (9) of the second ash conveying pipe (10)
It is provided with frequency conversion loader (8), frequency conversion loader (8) connecting fan (7), the upper position near burner hearth (1) of the second ash conveying pipe (10)
Put and be communicated with secondary air channel (12), the second ash conveying pipe (10) between secondary air channel (12) and frequency conversion loader (8) is provided with
Valve (11)；Enter grey valve (4), ash conveying pipe electrically operated gate (5), frequency conversion loader (8), blower fan (7), valve (11) connection dcs control
Cabinet (6) processed.
2. CFBB flying dust recovery control device according to claim 1 it is characterised in that: described is secondary
Airduct (12) is provided with volume control damper (13), and volume control damper (13) connects dcs switch board (6).
3. CFBB flying dust recovery control device according to claim 1 it is characterised in that: described blower fan
(7) it is roots blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876695.4U CN205897128U (en) | 2016-08-12 | 2016-08-12 | Circulating fluidized bed boiler fly ash retrieves controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876695.4U CN205897128U (en) | 2016-08-12 | 2016-08-12 | Circulating fluidized bed boiler fly ash retrieves controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205897128U true CN205897128U (en) | 2017-01-18 |
Family
ID=57781065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620876695.4U Expired - Fee Related CN205897128U (en) | 2016-08-12 | 2016-08-12 | Circulating fluidized bed boiler fly ash retrieves controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205897128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396866A (en) * | 2020-03-30 | 2020-07-10 | 哈尔滨锅炉厂有限责任公司 | Ash discharging device and ash discharging method for return valve of CFB (circulating fluid bed) boiler |
-
2016
- 2016-08-12 CN CN201620876695.4U patent/CN205897128U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396866A (en) * | 2020-03-30 | 2020-07-10 | 哈尔滨锅炉厂有限责任公司 | Ash discharging device and ash discharging method for return valve of CFB (circulating fluid bed) boiler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20210812 |