Patent ID: 6408612
Filing Date: 2002-06-25
Classification: F01K,Y02E,Y02P

Abstract:
A gas and steam-turbine plant, comprising:a steam turbine having a water/steam circuit; a gas turbine having a flue-gas side; a combustion chamber associated with said gas turbine; an air compressor associated with said gas turbine for supplying a partial flow of air compressed in said air compressor; a bleed-air line connected to said air compressor; an air-separation unit supplying oxygen and having an inlet side connected to said bleed-air line for receiving said partial flow of air compressed in said air compressor; a heat-recovery steam generator connected downstream of said gas turbine on said flue-gas side, said steam generator having heating surfaces connected in said water/steam circuit; a gasifier for fuel, said gasifier connected upstream of said combustion chamber and receiving oxygen from said air-separation unit; a water/steam drum; and a heat exchanger constructed as an evaporative cooler for cooling said partial flow of compressed air, said heat exchanger having a primary side connected to said bleed-air line and a secondary side connected to said water/steam drum to form an evaporator circuit for a flow medium.