CATALYST COMBUSTOR OF GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To make a catalyst have a long lifetime by constructing a catalyst combustion portion of a catalyst combustor such that a catalyst layer containing palladium is arranged as a front part thereof and a catalyst layer containing manganese and having a magnetoplumbite structure is arranged as a rear part thereof. SOLUTION: A catalyst layer 1 containing palladium which is excellent in ignitability from a low temperature is arranged at a gas inlet side as a front part of a catalyst combustion portion thus enabling a start of a catalytic action from a discharge gas temperature of a compressor. A catalyst layer 2 containing manganese which has a resistance against lowering of its catalytic activity and having a megnetoplumbite structure is arranged at a gas outlet as a rear part of the catalyst combustion portion. A mixture gas of air and fuel discharged from a compressor is fed to the catalyst layer 1 where a contact oxidation reaction proceeds. Corresponding to the progress of the reaction, the catalyst temperature and the gas temperature are elevated. The heated gas is fed to the catalyst layer 2 where the reaction is further proceeded to a temperature which enables a gas phase combustion.