High temperature gas turbine systems

Claim 1

A high temperature gas turbine generation system comprising: a compressor; means for conducting a gaseous oxidant to said compressor; a combustion heater wherein one of a fuel gas and a pulverized carbonaceous material is combusted to produce heat and reaction products; means for conducting compressed gaseous oxidant to and through said combustion heater so as to heat said oxidant; a reactor housing a fluidized bed wherein particulate coal is reacted with a discharge gas to produce heat and said fuel gas; means for conducting said fuel gas from said reactor to said combustion heater; a combustor producing a high temperature gaseous product from said heated oxidant and a gaseous fuel; means for conducting said gaseous fuel to said combustor; means for conducting a first portion of said heated oxidant to said combustor; means for conducting a second portion of said heated oxidant to and through said reactor so as to further heat said second portion of oxidant; means for mixing said high temperature gaseous product and said further heated second portion of oxidant into a mixture; an expander having an inlet for receiving said mixture and an outlet for discharging said discharge gas; means for conducting said mixture to said expander inlet; and means for conducting said discharge gas from said expander outlet to said reactor.