CN105299637A - Efficient separation return feeder of circulating fluidized boiler - Google Patents
Efficient separation return feeder of circulating fluidized boiler Download PDFInfo
- Publication number
- CN105299637A CN105299637A CN201510775503.0A CN201510775503A CN105299637A CN 105299637 A CN105299637 A CN 105299637A CN 201510775503 A CN201510775503 A CN 201510775503A CN 105299637 A CN105299637 A CN 105299637A
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- China
- Prior art keywords
- return feeder
- standpipe
- return
- efficient separation
- circulating fluidized
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses an efficient separation return feeder of a circulating fluidized boiler. The problems that a separation return feeder of a circulating fluidized bed is prone to vibration and the separation efficiency of a separator is low are solved. The efficient separation return feeder comprises a vertical tube (2). A cyclone separator (1) is connected to the top of the vertical tube (2). A return feeder body (3) is connected to the side face of the bottom end of the vertical tube (2). A return barrel (4) is connected to the return feeder body (3). An inclined return sliding board (5) is arranged on the bottom end face of the vertical tube (2). Return air caps (6) are arranged on the bottom face of the return feeder body (3). The efficient separation return feeder is simple in structure and convenient to maintain, the separation efficiency of the separation return feeder of the circulating fluidized boiler is improved, and the inducement of vibration of the return feeder is eliminated.
Description
Technical field
The present invention relates to a kind of CFBB, particularly a kind of separation material returning device of CFBB.
Background technology
At present, in Properties of CFB is run, the separation material returning device of CFBB deposits defect both ways: (1) is loosening wind blast cap because the riser bottom immediately below cyclone separator is provided with, loosen on wind direction and blow afloat circulating ash, when circulating ash quantity is less, be easy at standpipe place form circulating ash superposed layer, i.e. so-called " bridging " phenomenon; When circulating ash accumulation is larger, unexpected slump can gets off, the defeated ash of pulsation of repetition can be formed like this, cause the vibration of material returning device.(2) circulating ash rotates in the separator; larger particles ash can fall along separator and standpipe tube wall surrounding; negative pressure is formed centrally in separator and standpipe; flue gas enters back-end ductwork after centrally upwards leaving separator; under loosening wind action; the thin ash " being kicked up " of part, thus separator of upwards escaping under the carrying secretly of negative pressure flue gas, make the separative efficiency of separator reduce.
Summary of the invention
The invention provides a kind of efficient separation material returning device of CFBB, the separation material returning device solving recirculating fluidized bed easily vibrates the technical problem low with the separative efficiency of separator.
The present invention solves above technical problem by the following technical programs:
A kind of efficient separation material returning device of CFBB, comprise standpipe, cyclone separator is connected with at the top of standpipe, returning charge room is connected with in the side, bottom of standpipe, returning charge room is connected with returning charge cylinder, the bottom face of standpipe is provided with the returning charge slide plate of inclination, the bottom surface of returning charge room is provided with returning charge wind blast cap.
The inclination angle of the returning charge slide plate of the inclination that the bottom face of standpipe is arranged is 60 degree.
Structure of the present invention is simple, easy to maintenance, improves the separative efficiency of the separation material returning device of CFBB, eliminates the inducement of material returning device vibration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
A kind of efficient separation material returning device of CFBB, comprise standpipe 2, cyclone separator 1 is connected with at the top of standpipe 2, returning charge room 3 is connected with in the side, bottom of standpipe 2, returning charge room 3 is connected with returning charge cylinder 4, the bottom face of standpipe 2 is provided with the returning charge slide plate 5 of inclination, the bottom surface of returning charge room 3 is provided with returning charge wind blast cap 6.
The inclination angle of the returning charge slide plate 5 of the inclination that the bottom face of standpipe 2 is arranged is 60 degree.
Remove loosening wind in the bottom of standpipe 2, install returning charge slide plate 5 additional, circulating ash, under self gravitation effect, enters returning charge room 3 along returning charge slide plate 5 gravity flow, and enter burner hearth under returning charge wind action.Owing to not loosening wind, the circulating ash in standpipe 2 can not produce " bridging " phenomenon, can avoid because the material returning device vibration of the defeated ash generation of pulsation; In addition, owing to not loosening wind, thin ash " can not be kicked up " and be carried secretly by negative pressure, can improve separative efficiency.
Claims (2)
1. the efficient separation material returning device of a CFBB, comprise standpipe (2), cyclone separator (1) is connected with at the top of standpipe (2), material returning device (3) is connected with in the side, bottom of standpipe (2), material returning device (3) is connected with returning charge cylinder (4), it is characterized in that, the bottom face of standpipe (2) is provided with the returning charge slide plate (5) of inclination, the bottom surface of material returning device (3) is provided with returning charge wind blast cap (6).
2. the efficient separation material returning device of a kind of CFBB according to claim 1, is characterized in that, the inclination angle of the returning charge slide plate (5) of the inclination that the bottom face of standpipe (2) is arranged is 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510775503.0A CN105299637A (en) | 2015-11-15 | 2015-11-15 | Efficient separation return feeder of circulating fluidized boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510775503.0A CN105299637A (en) | 2015-11-15 | 2015-11-15 | Efficient separation return feeder of circulating fluidized boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105299637A true CN105299637A (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510775503.0A Pending CN105299637A (en) | 2015-11-15 | 2015-11-15 | Efficient separation return feeder of circulating fluidized boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105299637A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105763A (en) * | 2017-12-27 | 2018-06-01 | 杨松 | It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device |
| CN109268823A (en) * | 2018-08-24 | 2019-01-25 | 东方电气集团东方锅炉股份有限公司 | A kind of circulating fluidized bed boiler and control method for preventing material returning device from vibrating |
| CN110006035A (en) * | 2019-04-16 | 2019-07-12 | 杭州江东富丽达热电有限公司 | Boiler combustion material-returning device and its boiler combustion system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614306A (en) * | 2004-11-11 | 2005-05-11 | 华中科技大学 | Sealed fluid back-feeder |
| CN102563633A (en) * | 2010-12-31 | 2012-07-11 | 贵州中烟工业有限责任公司 | Material return device for circulating fluidized bed boiler |
| CN202947127U (en) * | 2012-08-24 | 2013-05-22 | 上海锅炉厂有限公司 | Double-outlet material return device for circulating fluidized bed boiler |
| CN103912871A (en) * | 2014-04-15 | 2014-07-09 | 国家电网公司 | Seal valve material returning system for chemical loop combustion system |
| CN205191555U (en) * | 2015-11-15 | 2016-04-27 | 国网山西省电力公司电力科学研究院 | High -efficient separation returning charge ware of circulating fluidized bed boiler |
-
2015
- 2015-11-15 CN CN201510775503.0A patent/CN105299637A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614306A (en) * | 2004-11-11 | 2005-05-11 | 华中科技大学 | Sealed fluid back-feeder |
| CN102563633A (en) * | 2010-12-31 | 2012-07-11 | 贵州中烟工业有限责任公司 | Material return device for circulating fluidized bed boiler |
| CN202947127U (en) * | 2012-08-24 | 2013-05-22 | 上海锅炉厂有限公司 | Double-outlet material return device for circulating fluidized bed boiler |
| CN103912871A (en) * | 2014-04-15 | 2014-07-09 | 国家电网公司 | Seal valve material returning system for chemical loop combustion system |
| CN205191555U (en) * | 2015-11-15 | 2016-04-27 | 国网山西省电力公司电力科学研究院 | High -efficient separation returning charge ware of circulating fluidized bed boiler |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105763A (en) * | 2017-12-27 | 2018-06-01 | 杨松 | It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device |
| CN109268823A (en) * | 2018-08-24 | 2019-01-25 | 东方电气集团东方锅炉股份有限公司 | A kind of circulating fluidized bed boiler and control method for preventing material returning device from vibrating |
| CN109268823B (en) * | 2018-08-24 | 2023-08-18 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed boiler capable of preventing material returning device from vibrating and control method |
| CN110006035A (en) * | 2019-04-16 | 2019-07-12 | 杭州江东富丽达热电有限公司 | Boiler combustion material-returning device and its boiler combustion system |
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Application publication date: 20160203 |
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| WD01 | Invention patent application deemed withdrawn after publication |