Abstract: A combined cycle power generation system is disclosed. The system includes a fluidized bed boiler, a hot separator, a steam turbine system and a gas turbine system. The gas turbine system is provided with a source of high temperature compressed air heated in three stages by a recuperator connected to an output of the gas turbine, an external bed heater connected to the hot separator, and a gas turbine combustor fueled by natural gas and/or coal gas provided by a gasification process.

Abstract: A power plant having multiple steam boilers for supplying steam for processing and for powering a turbine generator comprises a steam turbine having first and second stages, a steam powered processing unit, a plurality of steam boilers, each having a primary steam generator and a reheater, a system of steam lines for conducting primary steam from the steam boilers to said turbine, and to the process unit, return lines for returning cold steam from the first stage of the turbine to the reheaters for reheating, and lines for conducting reheated steam from the reheaters to the second stage of the turbine; and isolating valves in the lines with pressure relief valves on each side of the isolating valves for selectively isolating each of the boilers from the turbine and conducting primary steam through the reheaters of the boiler and to the processing unit.