Patent ID: 7096672
Filing Date: 2006-08-29
Classification: C01B,F02C,F24H

Abstract:
1. A method of heating a fluid in a fluid heating device integrated with a gas turbine, said method comprising: introducing the fluid into the fluid heating device having a radiant section, at least one convective section and passages for the fluid extending through at least the radiant section; preheating an oxygen containing stream through indirect heat transfer with a first gas turbine exhaust stream produced by the gas turbine; the first gas turbine exhaust stream being formed by dividing the first gas turbine exhaust stream from at least part of a main gas turbine exhaust stream produced by the gas turbine; superheating steam with the at least part of the main gas turbine exhaust stream; and introducing at least one fuel stream and the oxygen containing stream after having been preheated and a second gas turbine exhaust stream produced by the gas turbine, either separately or combined with one another as a combined stream; into the radiant section of the fluid heating device and burning the fuel to produce hot combustion gases that exit the radiant section and flow to the at least one convective section.