Patent ID: 7272934
Filing Date: 2007-09-25
Classification: C10J,C10K,F01K,F02C,Y02E,Y02P

Abstract:
1. A process for producing electricity from carbonaceous materials comprising the steps of: providing a fluidized bed containing a particulate material and a fluidizing medium, said fluidizing medium comprising steam; combusting a fuel source in a combustion device to form a combustion stream, said combustion stream indirectly heating said fluidized bed, said combustion device comprising a pulse combustion device; feeding a carbonaceous material to said fluidized bed, said fluidized bed being at a temperature sufficient for said carbonaceous material to endothermically react with said steam to form a product gas stream; feeding said product gas stream to a gas turbine, said gas turbine combusting said product gas stream in order to rotate a turbine and generate electricity, said gas turbine producing a flue gas stream; feeding at least a portion of said flue gas stream exiting said gas turbine to said combustion device for combustion with said fuel source; and wherein prior to said gas turbine, the product gas stream is fed to a heat exchanger for heating steam fed to said fluidized bed.