CN101298912A - Step friction speed circulating fluid bed boiler structure - Google Patents
Step friction speed circulating fluid bed boiler structure Download PDFInfo
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- CN101298912A CN101298912A CNA2008101068896A CN200810106889A CN101298912A CN 101298912 A CN101298912 A CN 101298912A CN A2008101068896 A CNA2008101068896 A CN A2008101068896A CN 200810106889 A CN200810106889 A CN 200810106889A CN 101298912 A CN101298912 A CN 101298912A
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- bed
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- pipe laying
- main bed
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Abstract
A step friction speed circulating fluidized bed boiler structure includes a main bed, an assistant bed, a pipe laying, a partition, characterized in that, the main bed has an altitude difference of 300-1100 mm with the assistant bed to be favorable for the circulation of the material; a partition is arranged between the main bed and the assistant bed, and a reflow hole is arranged at the lower end of the partition. The pipe laying is arranged on the upper end of the assistant bed. The technical effect of the invention is that, the different bed fluidization of different material grain size is completed through the structure of the main bed and the assistant bed, which satisfies the different fluidization speed difference requirement, thereby realizing the cycle burning between the main bed and the assistant bed, reaching the aim of advancing the burning efficiency and reducing the pipe laying abrasion. The structure of the invention is suitable for a plurality of fuels such as the coal, the jumb, the oil shale, the biomass fuel and the domestic garbage and the like.
Description
Technical field
The present invention relates to a kind of boiler structure, relate in particular to a kind of step friction speed circulating fluid bed boiler structure.
Background technology
The fluidized-bed combustion boiler ubiquity buried pipe abrasion of the band pipe laying of Shi Yonging is big in the market, the problem that boiler efficiency is low, and also this class boiler is difficult to resolve the problem that boiler pluralities of fuel certainly all is suitable for, and then inapplicable to biomass fuel and house refuse, the scope of application is narrow.
Summary of the invention
The object of the present invention is to provide a kind of step friction speed circulating fluid bed boiler structure, it can better solve, and its buried pipe abrasion of fluidized-bed combustion boiler is big, and boiler efficiency is low, is suitable for problems such as pluralities of fuel, gets final product energy savings, reaches environment protecting again.
The present invention is achieved like this, it comprises main bed, secondary bed, pipe laying, partition wall, it is characterized in that main bed and secondary bed have the 300-1100mm difference in height to be beneficial to the circulation of material, be connected with partition wall together between main bed and the secondary bed, have return port in the partition wall lower end, pipe laying is arranged in the upper end of secondary bed, heavy fuel enters main bed during boiler combustion, flow velocity is 2.5-5m/s, light Fuel enters secondary bed, flow velocity is 1-2.5m/s, and is unburnt on main bed, particle enters secondary bed by upper furnace or partition wall and continues after-flame at the fuel of 0-4mm, and conduct heat with arranging the pipe laying on it, because the effect of concentration and pressure, material enters main bed by return port under the partition wall, and material forms circulating combustion and heat transfer.
Technique effect of the present invention is: step friction speed circulating fluid bed boiler is that the burning of boiler is separated with conducting heat, by speed difference and the stair structure of main bed with secondary bed, finish the branch bed fluidisation of different material particle diameter, satisfy the requirement of main bed and secondary different fluidization rate difference, thereby realize the circulating combustion between main bed and the secondary bed, reach the raising efficiency of combustion, reduce the purpose of buried pipe abrasion, structure of the present invention is applicable to pluralities of fuels such as coal, spoil, oil shale, biomass fuel and house refuse.
Description of drawings
Fig. 1 is a fundamental diagram of the present invention.
Main bed 2, secondary bed 3, pipe laying 4, partition wall 5, return port in the drawings 1,
The specific embodiment
As shown in Figure 1, the present invention includes main bed 1, secondary bed 2, pipe laying 3, partition wall 4, main bed 1 has the 300-1100mm difference in height to be beneficial to the circulation of material with secondary bed 2, be connected with partition wall 4 together between main bed 1 and the secondary bed 2, have return port 5 in the partition wall lower end, pipe laying 3 is arranged in the upper end of secondary bed 2, heavy fuel enters main bed 1 during boiler combustion, flow velocity is 2.5-5m/s, light Fuel enters secondary bed, flow velocity is 1-2.5m/s, and is unburnt on main bed, particle enters secondary bed 2 by top or partition wall 4 and continues after-flame at the fuel of 0-4mm, and conduct heat with arranging the pipe laying on it, because the effect of concentration and pressure, material enters main bed 1 by return port under the partition wall 5, and material forms circulating combustion and heat transfer.Master's bed 1 passes through the layout of the discrepancy in elevation up and down with secondary bed 2, form the 3000-10000Pa static pressure difference of main bed 1 and secondary bed 2, finish the branch bed fluidisation of different material particle diameter, satisfy the requirement of 1-5 times of speed difference of main bed 1 and secondary bed 2, thereby realize the circulating combustion between main bed 1 and the secondary bed 2, reach the raising efficiency of combustion, reduce wearing and tearing, and problem such as suitable pluralities of fuel.
Claims (1)
1, a kind of step friction speed circulating fluid bed boiler structure, it comprises main bed, secondary bed, pipe laying, partition wall, it is characterized in that main bed and secondary bed have the 300-1100mm difference in height, are connected with partition wall together between main bed and the secondary bed, have return port in the partition wall lower end, pipe laying is arranged in the upper end of secondary bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101068896A CN101298912A (en) | 2008-06-02 | 2008-06-02 | Step friction speed circulating fluid bed boiler structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101068896A CN101298912A (en) | 2008-06-02 | 2008-06-02 | Step friction speed circulating fluid bed boiler structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101298912A true CN101298912A (en) | 2008-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101068896A Pending CN101298912A (en) | 2008-06-02 | 2008-06-02 | Step friction speed circulating fluid bed boiler structure |
Country Status (1)
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| CN (1) | CN101298912A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020360A1 (en) * | 2011-08-05 | 2013-02-14 | 江西江联能源环保股份有限公司 | Differential-velocity multi-cyclone conical-bed air distribution structure |
| CN102997230A (en) * | 2012-12-17 | 2013-03-27 | 江联重工股份有限公司 | Dense-phase region bottom slag balance and biomass fuel less oxygen ventilation structure applied in burning biologic material fluid bed boiler |
| CN103013546A (en) * | 2012-12-26 | 2013-04-03 | 江联重工股份有限公司 | Method for realizing oil shale refining and boiler combustion with steam cogeneration by integrating novel oil shale refining with differential fluidized bed combustion |
| CN105465775A (en) * | 2016-01-01 | 2016-04-06 | 广州环峰能源科技股份有限公司 | Biomass height difference combustion chamber |
-
2008
- 2008-06-02 CN CNA2008101068896A patent/CN101298912A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020360A1 (en) * | 2011-08-05 | 2013-02-14 | 江西江联能源环保股份有限公司 | Differential-velocity multi-cyclone conical-bed air distribution structure |
| CN102997230A (en) * | 2012-12-17 | 2013-03-27 | 江联重工股份有限公司 | Dense-phase region bottom slag balance and biomass fuel less oxygen ventilation structure applied in burning biologic material fluid bed boiler |
| CN102997230B (en) * | 2012-12-17 | 2015-04-29 | 江联重工股份有限公司 | Dense-phase region bottom slag balance and biomass fuel less oxygen ventilation structure applied in burning biologic material fluid bed boiler |
| CN103013546A (en) * | 2012-12-26 | 2013-04-03 | 江联重工股份有限公司 | Method for realizing oil shale refining and boiler combustion with steam cogeneration by integrating novel oil shale refining with differential fluidized bed combustion |
| CN105465775A (en) * | 2016-01-01 | 2016-04-06 | 广州环峰能源科技股份有限公司 | Biomass height difference combustion chamber |
| CN105465775B (en) * | 2016-01-01 | 2018-08-17 | 广州环峰能源科技股份有限公司 | A kind of biomass difference of height combustion chamber |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081105 |