Fluidized Bed Boiler - an overview | ScienceDirect Topics
The excess air coefficient at the furnace exit of a typical CFB boiler is 1.2, and the sectional superficial gas velocity is 5∼6 m/s at 850°C, so the furnace cross section heat release rate is 3.6∼4.4 MW/m 2.
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Effect of Bed Pressure Drop on Performance of a CFB Boiler
The analysis was validated by field tests carried out in a 75 t/h CFB boiler. At full boiler load, when bed pressure drop was reduced from 7.3 to 3.2 kPa, the height of the dense zone in the lower furnace decreased, but the solid suspension density profile in the upper furnace and …
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Circulating Fluidized Bed Boiler | CFB Boiler | GE Power
Ultra-Supercritical Circulating Fluidized Bed (CFB) Boilers. 660 MWe for lignite B, higher for hard coal, for low-grade and difficult-to-burn fuels such as anthracite, lignite, petroleum coke, oil shale, discarded coal and biomass, GE offer circulating fluidized bed technologies with different arrangements suited to …
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CFB Boiler - Coal Fired Boiler, Biomass Boiler, Pressure
Our CFB boilers are specially designed and optimized for applications to produce medium and high pressure steam or hot water with rated evaporation capacity from 35 to 440 tons/hr and rated pressure from 3.82 to 9.8 MPa. The CFB boiler design heat efficiency of CFB boilers is up to 87~90%.
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Ultra-Supercritical Pressure CFB Boiler Conceptual Design
Although CFB boilers as large as 300 MWe are now in operation, they are drum type, subcritical pressure units. With their sizes being much smaller than and their combustion temperatures much lower than those of PC boilers (300 MWe versus 1,000 MWe and 1600 F versus 3500 F), a conceptual design study was conducted herein to investigate the technical feasibility and economics of USC CFB boilers.
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Circulating Fluidized-Bed (IR-CFB) Boilers
Drawing upon our extensive technical expertise and operating experience, B&W developed the Internal Recirculation Circulating Fluidized-Bed (IR-CFB) boiler which is the technology of choice for power plant owners seeking economy, reliability and flexibility. In addition, load-following capabilities are attainable with B&W’s in-bed heat exchanger technology.
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