Patent ID: 6422022
Filing Date: 2002-07-23
Classification: F01K,Y02E

Abstract:
Apparatus for supplying auxiliary steam to an end user comprising:a combined cycle system including a steam-cooled gas turbine, a steam turbine and a heat recovery steam generator in heat transfer relation with hot products of combustion from said gas turbine, said heat recovery steam generator including a low pressure heater for generating steam and driving said steam turbine; a reheater for flowing spent cooling steam from said gas turbine to said steam turbine; a low pressure control valve for diverting at least a portion of the low pressure steam generated by the low pressure heater for flow through a first conduit for auxiliary steam use; a high pressure control valve for diverting at least a portion of the spent high pressure cooling steam from said gas turbine for flow thereof through a second conduit; a third conduit for receiving the low pressure and high pressure steam flows of said first and second conduits, respectively, and defining an auxiliary steam conduit for flow thereof to an end user; and a water attemperator in said third conduit for controlling the temperature of the auxiliary steam.