VERFAHREN ZUR ERZEUGUNG ELEKTRISCHER LEISTUNG

摘要

Process for the generation of electrical power in a gas turbine cycle comprising an air compression stage (12), first (8) and second (10) gas combustion stages and a series of first (14) and second (16) gas expansion stage providing mechanical power for the generation of electrical power in a rotating power generator, the improvement of which comprises steps of operating the first combustion stage (8) on hydrogen depleted fuel gas at high pressure and air from the air compression stage, the hydrogen depleted fuel gas is obtained by endothermic catalytic steam reforming (2) of a hydrocarbon feed gas (20); supplying heat for the endothermic steam reforming (2) by indirect heat exchange with heat from hot exhaust gas from the second expansion stage (16); separating hydrogen enriched gas from the hydrogen depleted fuel gas during the catalytic steam reforming (2) of the feed gas (20); and operating the second combustion stage (10) at lower pressure than the first combustion stage (8) on exhaust gas from the first expansion stage (14) and the hydrogen enriched gas (28) being separated from the hydrogen depleted gas (30).