The Fluidized Bed Combustion (FBC) process is the process where fuel particles are suspended in a hot, bubbling fluidity bed of ash and other particulate materials( sand,limesatone etc.) through which jets of air are blown to provide the oxygen required for combustion or gasification.The resultant fast and intimate mixing of gas and solids promotes rapid heat transfer and chemical reactions within the bed.
FBC system fit into essentially two major groups, atmospheric systems (FBC) and pressurized systems(PFBC), and two minor subgroups, bubbling(BFB) and circulating fluidized bed (CFB).
FBC is particularly applicable to sugar,paper, food and feedmill industries.
+ Calculation & Design : according to ASME and TCVN
+ Fabrication : according to ASME and TCVN
+ Evaporation capacity : ( 10,000-300,000) kg/h
+ Design Pressure : ( 10-150) bar(g)
+ Fuel : Indonesia coal & Biomass
+ Boiler efficiency : 87%
The FBC system is built in a closed fuel feeding system consiting of:
- Fuel receiving hopper, Fuel lifting bucket elevator;Fuel Storage Silo
- From the Silo, the fuel will be transferred to the buffer silo by another conveyor system before feeding into the furnace.
After heating, the flue gas will keep going to the Economizer unit to recover the waste heat and change to the useful heat for the boiler
At this time, the energy in the flue gas has nothing much to recover. it will be treated by drying collector( what we call bag filter) before going to the chimney and eventually into the atmosphere.