CN203309894U - Fly-ash reburning energy-saving device for circulating fluidized bed boiler - Google Patents
Fly-ash reburning energy-saving device for circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN203309894U CN203309894U CN2013203243612U CN201320324361U CN203309894U CN 203309894 U CN203309894 U CN 203309894U CN 2013203243612 U CN2013203243612 U CN 2013203243612U CN 201320324361 U CN201320324361 U CN 201320324361U CN 203309894 U CN203309894 U CN 203309894U
- Authority
- CN
- China
- Prior art keywords
- ash
- fly
- fluidized bed
- circulating fluidized
- bed boiler
- 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 - Lifetime
Links
- 239000010881 fly ash Substances 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000002956 ash Substances 0.000 abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000003500 flue dust Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a fly-ash reburning energy-saving device for a circulating fluidized bed boiler. The fly-ash reburning energy-saving device for the circulating fluidized bed boiler is characterized in that an ash release tube is arranged at the bottom of an ash silo, and a plug door is arranged on the ash release tube; the outlet of the ash release tube is connected with the material inlet of a continuous conveying pump, and the air inlet of the continuous conveying pump is connected with a Roots blower; a manual valve and a pressure meter are arranged between the Roots blower and the continuous conveying pump; the outlet of the continuous conveying pump is connected to a hearth of the circulating fluidized bed boiler through a pipeline which is provided with a manual valve and a pneumatic valve. The device provided by the utility model has the advantages that the carbon content of fly ash is reduced, so that the quantity of burnt coal is finally reduced, the fuel coal is saved, and the emission of pollutants is reduced.
Description
Technical field
The utility model belongs to boiler plant, is a kind of CFBB fly-ash reburning energy saver.
Background technology
At present, the unburned carbon in flue dust of quite a few CFBB is always high, mostly adopt sack cleaner, unburned carbon in flue dust is generally up to 10%～20%, and very general phenomenon, be to cause the one of the main reasons that boiler thermal output is low, Coal-fired capacity increases.
The utility model content
The utility model aims to provide a kind of CFBB fly-ash reburning energy saver, can effectively reduce unburned carbon in flue dust.
The technical scheme of utility model is: CFBB fly-ash reburning energy saver, in the bottom in grey storehouse, dust leg is set, and on dust leg, arrange an insertion plate door; The dust leg outlet is continuous delivery pump material inlet in succession, and the air inlet of continuous transfer pump connects roots blower; Hand-operated valve and Pressure gauge are set between roots blower and continuous transfer pump; The continuous transfer pump outlet is connected to the burner hearth of circulating fluidized bed boiler by pipeline, hand-operated valve and pneumatic operated valve are installed on this pipeline.
Package unit is furnished with control module, utilizes level-sensing device on grey storehouse and the metering device on continuous transfer pump, automatically controls the start and stop of whole device, guarantees a flying dust circulating combustion once, guarantees the energy saving of system effect.
The utility model is that the flying dust in the supporting grey storehouse of sack cleaner is returned to boiler combustion, and circulating combustion device once only.Owing at Hui Ku, dividing into the storing ash pipe, the feed valve of controlling flow is set and controls feed, the pressure-air that utilizes roots blower to produce, send flying dust into the boiler furnace burning.In order to ensure flying dust, return to only burning and once, be provided with control system a set of.
Therefore the utility model has the advantages that: the minimizing unburned carbon in flue dust, the final minimizing burnt the coal amount, reaches and saves fire coal, reduces the purpose of pollutant emission.
The accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation.
In figure: 1-roots blower, 2-Pressure gauge, 3-hand-operated valve, 4-continuous transfer pump, 5-push-pull valve, 6-hand-operated valve, 7-pneumatic operated valve, 8-level-sensing device, 9-dust leg, 10-ash storehouse, 11-boiler.
The specific embodiment
Below in conjunction with the embodiment of accompanying drawing, further illustrate the content of utility model.
As shown in the figure: in the bottom of Hui Ku (10), dust leg (9) is set, on dust leg, arrange a push-pull valve (5), the dust leg outlet is continuous delivery pump (4) material inlet in succession, the air inlet of continuous transfer pump (4) connects roots blower (1), hand-operated valve (3) and Pressure gauge (2) are set between roots blower (1) and continuous transfer pump (4), continuous transfer pump (4) outlet is connected to the burner hearth of circulating fluidized bed boiler by pipeline, hand-operated valve (6) and pneumatic operated valve (7) are installed on its pipeline.
Ash in ash storehouse (10) enters continuous transfer pump (4) continuously under the effect of gravity, during have push-pull valve (5) can be used as to shut down and the effect of the shutoff of maintenance; Enter the ash of continuous transfer pump (4), through piping and valve (6) and pneumatic operated valve (7), enter boiler furnace (11) under the effect of the high pressure gas that roots blower (1) produces.
It is once the most energy-conservation most economical that boiler fly ash only need to burn, therefore, before startup, measure the ash amount of depositing in ash (10) storehouse with level-sensing device (8), start the ash amount of utilizing continuous transfer pump (4) metering to carry after this device, before the accumulation conveying capacity reaches, measure deposit the ash amount time, ash before this device of expression startup has been sent into the burner hearth burning and has been gone over, can stop this device, the grey entrucking outward transport that hearth combustion crosses will have been returned in grey storehouse (10), until return to the ash of burner hearth, do not fill grey storehouse, restart this device.
Claims (1)
1. CFBB fly-ash reburning energy saver, it is characterized in that: the bottom in grey storehouse arranges dust leg, on dust leg, arranges an insertion plate door; The dust leg outlet is continuous delivery pump material inlet in succession, and the air inlet of continuous transfer pump connects roots blower; Hand-operated valve and Pressure gauge are set between roots blower and continuous transfer pump; The continuous transfer pump outlet is connected to the burner hearth of circulating fluidized bed boiler by pipeline, hand-operated valve and pneumatic operated valve are installed on this pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203243612U CN203309894U (en) | 2013-06-06 | 2013-06-06 | Fly-ash reburning energy-saving device for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203243612U CN203309894U (en) | 2013-06-06 | 2013-06-06 | Fly-ash reburning energy-saving device for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309894U true CN203309894U (en) | 2013-11-27 |
Family
ID=49616102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203243612U Expired - Lifetime CN203309894U (en) | 2013-06-06 | 2013-06-06 | Fly-ash reburning energy-saving device for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203309894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106743671A (en) * | 2016-11-20 | 2017-05-31 | 嘉善永金金属制品有限公司 | Boiler pneumatic ash handling induction system |
| CN110748878A (en) * | 2019-12-03 | 2020-02-04 | 兖矿集团有限公司 | High calcium ash flashback system |
-
2013
- 2013-06-06 CN CN2013203243612U patent/CN203309894U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106743671A (en) * | 2016-11-20 | 2017-05-31 | 嘉善永金金属制品有限公司 | Boiler pneumatic ash handling induction system |
| CN110748878A (en) * | 2019-12-03 | 2020-02-04 | 兖矿集团有限公司 | High calcium ash flashback system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |