Patent ID: 6357217
Filing Date: 2002-03-19
Classification: F01D,F02C,Y02E

Abstract:
A method for the cooling of guide vanes and/or moving blades in turbine stages of a gas turbine plant, comprising the steps of:feeding a cooling medium, which contains a first fuel, through an interior of the guide vanes and/or moving blades to be cooled, said cooling medium undergoing an endothermal chemical process with the use of a catalyst in said interior, in which the first fuel is converted at least partially into a second fuel; using at least a first portion of the cooling medium containing the second fuel as fuel for driving the gas turbine plant after said cooling medium containing the second fuel has flowed out of the guide vanes and/or moving blades; wherein the first fuel is a methane-containing gas and the cooling medium is a mixture of the first fuel and steam which leads to a reforming of the methane in the endothermal chemical process; and directing a second portion of the cooling medium that has flowed out of the guide vanes and/or moving blades back through the interior of the guide vanes and/or moving blades to undergo an endothermal chemical process.