Combustion with fluidization and after-burning

Claim 1

IN THE PROCESS WHICH COMPRISES THE INCOMPLETE COMBUSTION OF FUEL WITHIN A CLOSED FUIDIZATION-COMBUSTION ZONE CONTAINING A BED OF FINELY-DIVIDED SOLID PARTICLES MAINTAINED IN THE FLUIDIZED STATE BY FLOWING UPWARDLY THERETHROUGH A FLUIDIZING GAS WHICH CONTAINS A COMBUSTION REACTANT, WHEREIN THERE IS DISCHARGED FROM SAID BED AN EXIT GAS WHICH CONTAINS ENTRAINED SOLID PARTICLES, CARBON DIOXIDE AND CARBON MONOXIDE AND IS INCAPABLE OF SELF-SUSTAINED NORMAL COMBUSTION AT THE EXIT TEMEPERATURE WHEN MIXED WITH SUPPLEMENTAL AIR, THE IMPROVEMENT OF RECOVERING HEAT AND WORK ENERGY FROM SAID EXIT GAS SUFFICIENT TO SUPPLY THE SAID FLUIDIZING GAS BY: MAINTAINING SAID FLUIDIZATION-COMBUSTION ZONE AT A SUBSTANTIAL SUPERATMOSPHERIC PRESSURE SUFFICIENT TO PERMIT EXPANSION OF THE EXIT GAS IN A GAS TURBINE, SUBSTANTIALLY SEPARATING SAID ENTRAINED PARTICLES FROM THE EXIT GAS BY INTERIA WITHOUT SUBSTANTIALLY LOWERING THE EXIT GAS TEMPERATUE, EXPANDING THE RESULTING CLEAN GAS SUBSTANTIALLY AT THE SAID EXIT TEMPERATURE IN EXPANSION GAS TUBRINE MEANS AND THEREBY GENERATING SHAFT POWER, DISCHARGING THE CLEAN GAS FROM THE TURBINE MEANS AT REDUCED PRESSURE AND MIXING THE TUBINE