CATALYTIC COMBUSTION DEVICE FOR GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a catalytic combustion device designed to continue a stable combustion even when a pressure loss is increased owing to a combustion in a catalyst bed. SOLUTION: A premixed air passage extending to a combustion catalyst 2 disposed in an inner cylinder 1 is divided into a passage 13, an intermediate premixed air passage 12 and a combustion catalyst attaching part passage 11 and the flow passage area of the passage 13 at the most upstream part of an inlet is minimized. In such a way, since the flow passage area of the passage 13 at the inlet part in the premixed air passage to the combustion catalyst 2 is restricted and a pressure loss in the inlet part is increased, even when premixed air is burnt in a catalyst bed and the pressure loss is increased, the premixed air can be stably burnt by rarely changing the pressure loss for all the passage of the premixed air of the catalytic combustion device.