Well Not only in AFBC Boilers in all kind of boilers like CFBC Travelling gate etc downcomers are used When water enters into the steam drum it gets separated in the steam drum as water and steam AFBC Scribd Welcome toPresentation on AFBC Boilers FLUIDISED BED COMBUSTION BUBBLING AFBC Developed in house CIRCULATING CFBC Bas…
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Get PriceDescription AFBC Boiler CFBC Boiler 1 Fuel Size 0 10 mm 6 10 mm 2 Velocity of fluidization m/sec to 9 m/sec 3 Inbed evaporator tubes Atmospheric Fluidised Bed Combustion AFBC Thermax Atmospheric Fluidised Bed Combustion AFBC The bubbling type AFBC boiler offers efficient cost effective reliable and viable
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Get PriceAFBC = Atmospheric Bubbling Fluidized Bed Combustion CFBC = Circulating Fluidized Bed Combustion Long Answer It is just a way of burning of a fuel for example a Travelling Grate Stoker burn the fuel in Static Mode such that fuel rests on the grate whereas the Pulverized Fuel firing burns the fuel in Suspension Mode in transport condition
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Get PriceCirculating Fluidised Bed Combustion CFBC Boilers between the boiler first and second pass at a temperature of around 400 C It is recirculated into the The types of boilers are tube boiler tube Boiler According to the operating principle it is classified as Boiler heat recovery boiler
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Get PriceCFBC Atmospheric Circulating Fluidized Bed Combustion CFBC AFBC = m/sec to m/sec CFBC = m/sec to 9 m/sec Transfer Surface AFBC = Heat is extracted within the the bed CFBC = Heat transfer occer outside of combustion zone i e Convection section water walls and at the exit of the riser
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Get PriceChemical Engineering and Fluidization Technology The modern fluidization technology which is nowadays characterized by powerful solid handling and well controlled reaction temperature originated at the end of the 19th century with the use of fluidized beds for roasting of sulfide ores and further emerged through Winkler s coal gasification patents in 1921 and the rapid
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Get PriceCfbc stands for circulating fludised bed combustion where as afbc is for atmospheric fluidise bed combustion afbc bed fluidising velocity is approx 4 m/s and in cfbc boiler fluidising velocity is
Get PriceThe utilization space in the CFBC boiler is adequate than AFBC 2 The combustion of fuel is efficient more in the CFBC boiler 3 SO2 and NOx can be controlled more in the CFBC boiler 4 The control of temperature is more in the CFBC boiler 5 It can work effectively even with the low calorific value of the fuel 6 the turndown ratio is higher
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