Patent ID: 6680137
Filing Date: 2004-01-20
Classification: C10J,Y02P

Abstract:
A system for producing energy from a biomass feedstock, said system comprising:a fluidized bed gasifier for heating a biomass feedstock to produce a fuel gas comprising at least hydrogen and carbon monoxide, said fluidized bed gasifier also producing carbonaceous char; a combustor, for receiving said carbonaceous char from said fluidized bed gasifier and burning said carbonaceaous char to produce heat and oxidant gas comprising at least carbon dioxide and oxygen; and a fuel cell for producing electric power, said fuel cell having an anode and a cathode, said fuel gas from said gasifier directed to said anode of said fuel cell, and at least a portion of exhaust gas from said anode directed to said combustor, wherein said portion of said exhaust gas from said anode is combusted to recover residual energy to increase the efficiency of said system.