CN201289071Y - Coal fines fluidization suspension combustion boiler - Google Patents
Coal fines fluidization suspension combustion boiler Download PDFInfo
- Publication number
- CN201289071Y CN201289071Y CNU2008200267991U CN200820026799U CN201289071Y CN 201289071 Y CN201289071 Y CN 201289071Y CN U2008200267991 U CNU2008200267991 U CN U2008200267991U CN 200820026799 U CN200820026799 U CN 200820026799U CN 201289071 Y CN201289071 Y CN 201289071Y
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- CN
- China
- Prior art keywords
- suspension
- combustion chamber
- coal dust
- boiler
- heating surface
- 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 discloses a coal dust fluidizing suspension combustion boiler belonging to the industrial boiler, which solves deficiency that small boiler has short service life, and wastes fuel when firing coal dust in prior art. The boiler mainly comprises a steel frame, a combustion chamber furnace wall, an ignition device, a suspension combustion chamber, a combustion chamber heated restrain, a convection heating surface, a rear end heating surface, a high temperature vortex separator, a bed material supplementary and coal dust feeding device, an unequal distributed combustion device filling the coal bed material, a separated feedback combustion device and an effect dust blowing device. A grid plate of the unequal distributed combustion device is provided with a discharge pipe in the centre. Overgrate air is provided at bottom of the suspension section. The utility model is mainly used for industrial production.
Description
Technical field
The utility model belongs to a kind of Industrial Boiler, specifically, relates to a kind of coal dust fluidisation suspension fired boiler.
Background technology
For medium small boiler, how reducing coal consumption raising boiler operating efficiency is key point.And coal dust firing can increase the contact area of coal grain and oxygen, makes fuel combustion abundant.At present, middle-size and small-size pulverized-coal fired boiler is owing to be subjected to structural limitations, and furnace cavity is less, and pulverized coal particle time of staying in burner hearth is short, has little time completing combustion just enters boiler with flue gas heating surface.Like this, because the uncombusted pulverized coal particle is drained with cigarette, caused waste of fuel on the one hand, secondly, owing to the erosive wear of uncombusted pulverized coal particle to boiler heating surface, in the service life of having reduced boiler, simultaneously, temperature control difficulty easily generates NO
xContaminated environment.
Summary of the invention
The purpose of this utility model is for a kind of coal dust fluidisation suspension fired boiler is provided, to solve the defective of waste fuel during short, combusting coal fines in medium small boiler in prior art service life.
The utility model is realized by the following technical solutions: a kind of coal dust fluidisation suspension fired boiler, comprise steelframe, combustion chamber furnace wall, igniter, suspension combustion chamber, combustion chamber be heated tube bank, convection heating surface, back-end surfaces, described coal dust fluidisation suspension fired boiler is provided with the high temperature eddy current separator; Front wall is provided with the bed material and replenishes and the coal dust feed arrangement; Be provided with the non-impartial cloth wind burner of loading medium bed material in combustion chamber bottom, be provided with drainage conduit in the air distribution plate central authorities of non-impartial cloth wind burner; Be provided with secondary wind in the suspension section bottom; Be provided with separation at combustor exit and feed back burning device.
Convection heating surface can be provided with effective soot blower.
Compared with prior art, the beneficial effects of the utility model are: by the high temperature eddy current separator, can make unburnt pulverized coal particle get back to suspension bed and burn once more.So both prolonged the time of staying of fuel in burner hearth, guaranteed sufficient combustion, reduced the waste of fuel, reduced the dust content that enters heating surface, reduced the erosive wear of uncombusted pulverized coal particle, prolonged the service life of boiler boiler heating surface.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a left view of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of coal dust fluidisation suspension fired boiler comprises steelframe 6, combustion chamber furnace wall 7, igniter 2, suspension combustion chamber 14, combustion chamber be heated tube bank 4, convection heating surface 9, back-end surfaces 11; Described coal dust fluidisation suspension fired boiler is provided with high temperature eddy current separator 8; Front wall is provided with the bed material and replenishes and coal dust feed arrangement 5; Be provided with the non-impartial cloth wind burner 3 of loading medium bed material in 14 bottoms, suspension combustion chamber, be provided with drainage conduit 1 in the air distribution plate central authorities of non-impartial cloth wind burner 3; Be provided with secondary wind 12 in the suspension section bottom; 14 outlets are provided with to separate and feed back burning device 13 in the suspension combustion chamber; Convection heating surface is provided with effective soot blower 10.
Compare with the conventional pulverized-coal boiler, the utlity model has direct desulfurization in the combustion process, realize 850-950 ℃ of low-temperature burning, no coking also suppresses NO
xGenerate and discharging, the efficiency of combustion height (more than 98%) of coal dust is to advantages such as the adaptability of coal dust are strong.
Claims (2)
1, a kind of coal dust fluidisation suspension fired boiler, comprise steelframe, combustion chamber furnace wall, igniter, suspension combustion chamber, combustion chamber be heated tube bank, convection heating surface, back-end surfaces, it is characterized in that: described coal dust fluidisation suspension fired boiler is provided with the high temperature eddy current separator; Front wall is provided with the bed material and replenishes and the coal dust feed arrangement; Be provided with the non-impartial cloth wind burner of loading medium bed material in suspension combustion chamber bottom, be provided with drainage conduit in the air distribution plate central authorities of non-impartial cloth wind burner; Be provided with secondary wind in the suspension section bottom; Be provided with separation in the outlet of suspension combustion chamber and feed back burning device.
2, coal dust fluidisation suspension fired boiler according to claim 1, it is characterized in that: convection heating surface is provided with effective soot blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200267991U CN201289071Y (en) | 2008-08-15 | 2008-08-15 | Coal fines fluidization suspension combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200267991U CN201289071Y (en) | 2008-08-15 | 2008-08-15 | Coal fines fluidization suspension combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289071Y true CN201289071Y (en) | 2009-08-12 |
Family
ID=40980754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200267991U Expired - Fee Related CN201289071Y (en) | 2008-08-15 | 2008-08-15 | Coal fines fluidization suspension combustion boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201289071Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634922A (en) * | 2015-02-27 | 2015-05-20 | 安徽工业大学 | Detachable solid fuel suspension combustion experiment testing device and detachable solid fuel suspension combustion experiment testing method |
-
2008
- 2008-08-15 CN CNU2008200267991U patent/CN201289071Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634922A (en) * | 2015-02-27 | 2015-05-20 | 安徽工业大学 | Detachable solid fuel suspension combustion experiment testing device and detachable solid fuel suspension combustion experiment testing method |
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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 |
Granted publication date: 20090812 Termination date: 20140815 |
|
| EXPY | Termination of patent right or utility model |