CN201351914Y - Return material air supply system of circulating fluidized bed boiler - Google Patents
Return material air supply system of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN201351914Y CN201351914Y CNU2008202280543U CN200820228054U CN201351914Y CN 201351914 Y CN201351914 Y CN 201351914Y CN U2008202280543 U CNU2008202280543 U CN U2008202280543U CN 200820228054 U CN200820228054 U CN 200820228054U CN 201351914 Y CN201351914 Y CN 201351914Y
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- air supply
- boiler
- return material
- fluidized bed
- circulating fluidized
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Abstract
The utility model belongs to components of circulating fluidized bed boilers, in particular to a return material air supply system of a circulating fluidized bed boiler, which resolves the problem that the existing circulating fluidized bed boiler in the prior art is provided with one return material air supply blower only, which is insufficient in air supply, once the return material air supply blower is in failure, the normal production of the whole boiler can be affected severely. The return material air supply system of a circulating fluidized bed boiler comprises a return material air chamber, which is characterized in that the return material air chamber is connected with an air outlet of a primary blower of the boiler via an air supply pipe and a standby blower is connected to the air supply pipe. The return material air supply system has the advantages of sufficiently utilizing the advantages of sufficient air supply and high power of the primary blower of the boiler, distributing air power of the primary blower to a material refeeder, providing sufficient air sources for the refeeder, and then guaranteeing normal production of the boiler, increasing production efficiency and reducing damages to the boiler.
Description
Technical field
The utility model belongs to the CFBB parts, is specifically related to a kind of CFBB returning charge air feed system.
Background technology
Material returning device is one of main part of recirculating fluidized bed.Soot particle that flue gas carries and the coal grain that is burning enter separator by burner hearth, and most of solid particle is separated in separator gets back to again in the stove through material returning device down, and flue gas then enters back-end surfaces by separator top.The circulating ratio of general CFBB is that 5～20, the ten returning charge ashes times over coal-supplying amount need to return the combustion chamber through material returning device and burn once more, and the size of circulating ratio is also regulated by material returning device simultaneously.Therefore material returning device is the vitals that is related to boiler combustion, overheating steam temperature and load.
In the existing CFBB, the special fan that has only of returning charge wind is provided for material returning device, do not have other wind regimes, if this returning charge blower fan breaks down, just necessary blowing out in the time of maintenance, otherwise will have influence on boiler combustion, overheating steam temperature and load, not only greatly, and reduce production efficiency the CFBB infringement.
Summary of the invention
The utility model only has a returning charge air feed blower fan for what solve CFBB in the prior art, the air feed deficiency, and break down, have a strong impact on the problem of boiler ordinary production, a kind of CFBB returning charge air feed system is provided.
The utility model adopts following technical scheme to realize:
CFBB returning charge air feed system comprises the returning charge air compartment, it is characterized in that the returning charge air compartment links to each other by the air outlet of air feed pipe with the boiler primary air fan, connects standby fan on the air feed pipe.
On the air-supply pipeline between boiler primary air fan and the standby fan valve is set.
The utlity model has following beneficial effect: made full use of the advantage that boiler primary air fan air feed is sufficient, power is big, the wind energy of primary air fan is distributed to the material returning device air feed, for material returning device provides sufficient wind regime, and then ensured the ordinary production of boiler, improved production efficiency, reduced infringement boiler.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure: 1-boiler primary air fan, 2-standby fan, 3-valve, 4-returning charge air compartment, 5-air feed pipe.
The specific embodiment
In conjunction with the accompanying drawings the specific embodiment of the present utility model is described further.
At the active force blower fan of CFBB, directly add air feed pipe 5 in the outlet of boiler primary air fan 1 and link to each other with the outlet of standby fan 2 air feeds, link to each other with returning charge air compartment 4 then, make boiler primary air fan 1 in operate as normal, also can give the material returning device air feed.
Utilize the dynamical system of boiler primary air fan 1 to provide wind regime for material returning device, original returning charge blower fan under normal circumstances need not be opened, make it become standby fan 2, in the air feed deficiency, open standby fan 2 again, so promptly guaranteed the ordinary production of boiler, and saved electric energy for enterprise, two blower fans in past start simultaneously, only need start one just is enough to keep ordinary production now, calculate according to one day economize on electricity 700KWh, on 1 year 340 working day, can realize the 238000KWh that economizes on electricity.
Claims (2)
1, a kind of CFBB returning charge air feed system comprises returning charge air compartment (4), it is characterized in that returning charge air compartment (4) links to each other by the air outlet of air feed pipe (5) with boiler primary air fan (1), and air feed pipe (5) is gone up and connected standby fan (2).
2, CFBB returning charge air feed system according to claim 1 is characterized in that on the air-supply pipeline between boiler primary air fan (1) and the standby fan (2) valve (3) being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202280543U CN201351914Y (en) | 2008-12-20 | 2008-12-20 | Return material air supply system of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202280543U CN201351914Y (en) | 2008-12-20 | 2008-12-20 | Return material air supply system of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351914Y true CN201351914Y (en) | 2009-11-25 |
Family
ID=41375302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202280543U Expired - Fee Related CN201351914Y (en) | 2008-12-20 | 2008-12-20 | Return material air supply system of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351914Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984259A (en) * | 2010-10-28 | 2011-03-09 | 广东理文造纸有限公司 | Control method for improving economical operation of boiler charge returning air blower |
| CN102022723A (en) * | 2010-12-31 | 2011-04-20 | 东莞理文造纸厂有限公司 | Circulating fluidized bed boiler for papermaking thermal power plant |
| CN106122953A (en) * | 2016-08-29 | 2016-11-16 | 江苏汇能锅炉有限公司 | A kind of First air air-distribution device of CFBB |
-
2008
- 2008-12-20 CN CNU2008202280543U patent/CN201351914Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984259A (en) * | 2010-10-28 | 2011-03-09 | 广东理文造纸有限公司 | Control method for improving economical operation of boiler charge returning air blower |
| CN102022723A (en) * | 2010-12-31 | 2011-04-20 | 东莞理文造纸厂有限公司 | Circulating fluidized bed boiler for papermaking thermal power plant |
| CN106122953A (en) * | 2016-08-29 | 2016-11-16 | 江苏汇能锅炉有限公司 | A kind of First air air-distribution device of CFBB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20121220 |