CN207584762U - A kind of circulating fluidized bed boiler fires stalk feeding system entirely - Google Patents
A kind of circulating fluidized bed boiler fires stalk feeding system entirely Download PDFInfo
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- CN207584762U CN207584762U CN201721389383.1U CN201721389383U CN207584762U CN 207584762 U CN207584762 U CN 207584762U CN 201721389383 U CN201721389383 U CN 201721389383U CN 207584762 U CN207584762 U CN 207584762U
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- China
- Prior art keywords
- air hose
- batcher
- feeding system
- wind air
- fluidized bed
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model provides a kind of circulating fluidized bed boiler and fires stalk feeding system entirely, and feeding system includes feed hopper, batcher, and feed hopper is equipped with material-homogenating device, and the outlet of material-homogenating device is connected with the entrance of batcher；The outlet of batcher is connected with the entrance of material blanking tube by quick closing valve, and the opposite side in batcher outlet is equipped with sealing air air hose；The blanking port of material blanking tube is stretched at the bottom centre of furnace depth direction, is equipped with conveying wind air hose and material seeding wind air hose successively from top to bottom in material blanking tube side, and the conveying wind air hose and material seeding wind air hose are connected respectively with Secondary Air air hose.Feed hopper adds harmonious material device, it is ensured that during boiler feeding, feed bin material is uniform, prevents batcher due to bite stoppage in transit after foreign matter and stalk winding；Flapper is removed, increases quick closing valve, when avoiding batcher trouble hunting, furnace flame occurs and alters to batcher even feed bin, the serious accident that feeding system is caused to catch fire.
Description
Technical field
The utility model is related to recirculating fluidized bed (CirculatingFluidizedBed, abbreviation CFB) boiler technologies, special
It is not related to a kind of improved circulating fluidized bed boiler and fires stalk feeding system entirely.
Background technology
CFB boiler is a kind of environmentally friendly burning boiler, has that fuel tolerance is strong, burning pluralities of fuel, Load Regulation model
It encloses extensively, environmental protection characteristic is superior, and the discharge of NO2, SO2 meet discharging standards.For example, with the mixed of maize straw and cotton stalk
Object is closed, stalk enters stokehold and first passes around break process, and full-size is less than 50mm to cotton stalk after crushing.
The problem of straw boiler feeding system failure is one very universal in the international at present, country, many same type power plant
Since feeding system failure causes unit outage to have generation more.Mainly there is following failure：1）Double-spiral feeder due to foreign matter with
And bite is stopped transport after stalk winding；2) serious wear in auger operation, the maintenance amount of feeding system increase, and reducing boiler operatiopn can
By property；3) during double-spiral feeder trouble hunting, often there is furnace flame and alter to batcher even feed bin, cause feeding system
The serious accident caught fire.
With reference to the design feature of feeding system and there are problem, analysis main cause has following point：1）Due to stalk
Collection process is complicated, enters pot containing sundries, a large amount of soil such as a large amount of soil, brick and other steel pipes, cement block in stalk
Fine ash is formed after burning in stove, interior cycle, outer circulation are participated in stove, increases circulating ash quantity.Brick and other sundries, which enter, to be given
Material system easily forms blocking pipeline or bite rotation is mechanical, and the sundries such as some bricks, which enter in stove, can also influence boiler fluidisation, from
And cause boiler coke；2）Feeding system design is unreasonable, does not consider to detach the dust-proof of these sundries or even conveying system；
3）Feed bin does not have homocline system in operation, and when boiler feeding, feed bin material is uneven；4）Gravity panel turnover type flapper is in reality
Operation cannot be played the role of locking gas.
Invention content
In order to solve the above technical problems, the utility model aim be to provide a kind of circulating fluidized bed boiler fire full stalk to
Material system enhances feeding system operation stability.
To achieve the above object, technical solution is as follows used by the utility model：
A kind of circulating fluidized bed boiler fires stalk feeding system entirely, and the feeding system includes feed hopper, batcher, described
Feed hopper is equipped with material-homogenating device, and the outlet of the material-homogenating device is connected with the entrance of batcher；The outlet of the batcher and blanking
The entrance of pipe is connected by quick closing valve, and the opposite side in batcher outlet is equipped with sealing air air hose；The material blanking tube
Blanking port stretch at the bottom centre of furnace depth direction, material blanking tube side from top to bottom successively be equipped with conveying wind air hose and
Material seeding wind air hose, the conveying wind air hose and material seeding wind air hose are connected respectively with Secondary Air air hose.
Further optimization is：Exist between the material blanking tube and vertical plane with slanted angle β, the slanted angle β
Between 110 °~150 °.
Further optimization is：The material seeding wind air hose diameter is 179mm.
Further optimization is：The material of the material blanking tube is high-temperature wearable stainless steel.
Using above-mentioned technical proposal, feed hopper adds harmonious material device, it is ensured that and when boiler feeding, feed bin material is uneven,
Batcher is prevented due to bite stoppage in transit after foreign matter and stalk winding；It removes original flapper, increases quick closing valve and go forward side by side pot
Stove is protected, and when avoiding batcher trouble hunting, furnace flame is occurred and is altered to batcher even feed bin, cause what feeding system caught fire
Serious accident；Increase the material seeding air hose diameter, improve material seeding air quantity, completely cut off zone of positive pressure and feeding system normal pressure in stove.
Description of the drawings
Fig. 1 is the utility model slag cooler structure diagram；
Wherein, 1, burner hearth；2nd, feed hopper；3rd, batcher；4th, material-homogenating device；5th, material blanking tube；6th, sealing air air hose；7th, wind is conveyed
Air hose；8th, material seeding wind air hose；9th, quick closing valve.
Specific embodiment
For ease of those skilled in the art understand that technical solutions of the utility model, new to this practicality in conjunction with Figure of description
Type scheme is described in further detail.
Embodiment one
As shown in Figure 1, a kind of circulating fluidized bed boiler fires stalk feeding system entirely, the feeding system include feed hopper 2,
Batcher 3, the feed hopper 2 are equipped with material-homogenating device 4, and the outlet of the material-homogenating device 4 is connected with the entrance of batcher 3；It is described to give
The outlet of material machine 3 is connected with the entrance of material blanking tube 5 by quick closing valve 9, is equipped in the opposite side that batcher 3 exports close
Seal wind air hose 6；The blanking port of the material blanking tube 5 is stretched at 1 depth direction bottom centre of burner hearth, in 5 side of material blanking tube from upper
Be equipped with conveying wind air hose 7 and material seeding wind air hose 8 under and successively, the conveying wind air hose 7 and material seeding wind air hose 8 respectively with Secondary Air
Air hose is connected.
There is slanted angle β, the slanted angle β is at 120 ° between the material blanking tube 5 and vertical plane.
8 diameter of material seeding wind air hose is 179mm.
The material of the material blanking tube 5 is high-temperature wearable stainless steel.
Embodiment two
As shown in Figure 1, a kind of circulating fluidized bed boiler fires stalk feeding system entirely, the feeding system include feed hopper 2,
Batcher 3, feed hopper 2 are equipped with material-homogenating device 4, and the outlet of the material-homogenating device 4 is connected with the entrance of batcher 3；The batcher 3
Outlet be connected with the entrance of material blanking tube 5 by quick closing valve 9, batcher 3 export opposite side be equipped with sealing air
Air hose 6；The blanking port of the material blanking tube 5 is stretched at 1 depth direction bottom centre of burner hearth, in 5 side of material blanking tube from top to bottom
Be equipped with conveying wind air hose 7 and material seeding wind air hose 8 successively, the conveying wind air hose 7 and material seeding wind air hose 8 respectively with Secondary Air air hose
It is connected.
There is slanted angle β, the slanted angle β is at 135 ° between the material blanking tube 5 and vertical plane.
8 diameter of material seeding wind air hose is 179mm.
The material of the material blanking tube 5 is high-temperature wearable stainless steel.
Embodiment three
As shown in Figure 1, a kind of circulating fluidized bed boiler fires stalk feeding system entirely, the feeding system include feed hopper 2,
Batcher 3, feed hopper 2 are equipped with material-homogenating device 4, and the outlet of the material-homogenating device 4 is connected with the entrance of batcher 3；The batcher 3
Outlet be connected with the entrance of material blanking tube 5 by quick closing valve 9, batcher 3 export opposite side be equipped with sealing air
Air hose 6；The blanking port of the material blanking tube 5 is stretched at 1 depth direction bottom centre of burner hearth, in 5 side of material blanking tube from top to bottom
Be equipped with conveying wind air hose 7 and material seeding wind air hose 8 successively, the conveying wind air hose 7 and material seeding wind air hose 8 respectively with Secondary Air air hose
It is connected.
There is slanted angle β, the slanted angle β is at 150 ° between the material blanking tube 5 and vertical plane.
8 diameter of material seeding wind air hose is 179mm.
The material of the material blanking tube 5 is high-temperature wearable stainless steel.
Using above-mentioned technical proposal, feed hopper adds harmonious material device, it is ensured that and when boiler feeding, feed bin material is uneven,
Batcher is prevented due to bite stoppage in transit after foreign matter and stalk winding；It removes original flapper, increases quick closing valve and go forward side by side pot
Stove is protected, and when avoiding batcher trouble hunting, furnace flame is occurred and is altered to batcher even feed bin, cause what feeding system caught fire
Serious accident；Increase the material seeding wind air hose diameter, improve material seeding air quantity, completely cut off zone of positive pressure and feeding system normal pressure in stove.
After the modification scheme is implemented, feeding system operation stability greatly enhances.The average event daily of feeding system before transformation
Barrier three, four times, two months feeding systems of operation catch fire secondary, and failure together does not occur for continuous operation four months after transformation.
The above is only the preferred embodiment to the utility model, is not that other shapes are done to the utility model
The limitation of formula, any person skilled in the art are changed or are modified as possibly also with the technology contents of the disclosure above
With the equivalent embodiment of variation.But every without departing from the content of the technical scheme of the utility model, the technology according to the utility model
Substantive any simple modification, equivalent change and modification made to the above embodiment, still fall within technical solutions of the utility model
Protection domain.
Claims (4)
1. a kind of circulating fluidized bed boiler fires stalk feeding system entirely, the feeding system includes feed hopper（2）, batcher（3）,
It is characterized in that：The feed hopper（2）Equipped with material-homogenating device（4）, the material-homogenating device（4）Outlet and batcher（3）Entrance phase
Connection；The batcher（3）Outlet and material blanking tube（5）Entrance pass through quick closing valve（9）It is connected, in batcher（3）
The opposite side of outlet is equipped with sealing air air hose（6）；The material blanking tube（5）Blanking port stretch to burner hearth（1）Depth direction bottom
At portion center, in material blanking tube（5）Side is equipped with conveying wind air hose successively from top to bottom（7）With material seeding wind air hose（8）, the conveying
Wind air hose（7）With material seeding wind air hose（8）It is connected respectively with Secondary Air air hose.
2. a kind of circulating fluidized bed boiler fires stalk feeding system entirely according to claim 1, it is characterised in that：The blanking
Pipe（5）There is slanted angle β between vertical plane, the slanted angle β is between 110 °~150 °.
3. a kind of circulating fluidized bed boiler fires stalk feeding system entirely according to claim 1, it is characterised in that：The material seeding
Wind air hose（8）Diameter is 179mm.
4. a kind of circulating fluidized bed boiler fires stalk feeding system entirely according to claim 1, it is characterised in that：The blanking
Pipe（5）Material be high-temperature wearable stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721389383.1U CN207584762U (en) | 2017-10-26 | 2017-10-26 | A kind of circulating fluidized bed boiler fires stalk feeding system entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721389383.1U CN207584762U (en) | 2017-10-26 | 2017-10-26 | A kind of circulating fluidized bed boiler fires stalk feeding system entirely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207584762U true CN207584762U (en) | 2018-07-06 |
Family
ID=62729660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721389383.1U Expired - Fee Related CN207584762U (en) | 2017-10-26 | 2017-10-26 | A kind of circulating fluidized bed boiler fires stalk feeding system entirely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207584762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340742A (en) * | 2018-11-27 | 2019-02-15 | 湖北金炉节能股份有限公司 | A kind of new-type fluidized bed smoke furnace |
-
2017
- 2017-10-26 CN CN201721389383.1U patent/CN207584762U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340742A (en) * | 2018-11-27 | 2019-02-15 | 湖北金炉节能股份有限公司 | A kind of new-type fluidized bed smoke furnace |
| CN109340742B (en) * | 2018-11-27 | 2024-04-30 | 湖北金炉节能股份有限公司 | Novel fluidized bed flue gas furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20211026 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |