Combustor of gas turbine

Abstract

Abstract PURPOSE:To reduce NOX by improving low-temperature ignitability and high activity, by so constituting the titled combustor that three kinds of catalysts having different predetermined composition are arranged in order according to a flow of an air-fuel mixture, in a catalytic combustion type gas turbine combustor. CONSTITUTION:A first stage - thrid stage catalysts 4-6 are arranged from the upper stream to the lower stream against a flow 9 of a mixture of air 8 and fuel. As for the first stage catalyst 4, it is made into the catalyst to be obtained by providing a coated layer 2a formed of alumina containing palladium 3a or platinum 3b and cerium on a heat resisting carrier 1, as for the second stage catalyst 5, it is constituted by providing similarly a coating layer 2b containing selected article out of zirconium, strontium and barium as a metal in place of the cerium on the carrier 10, and as for the third stage catalyst 6, it is constituted by providing a coating layer 2c containing the selected article out of lanthanum and neodymium. With this constitution, low-temperature ignitability, high activity and life are improved and generation of NOX can be reduced.

Inventors

• 👤 Terunobu Hayata
• 👤 早田　輝信
• 👤 Tomiaki Furuya
• 👤 富明 古屋
• 👤 Chikau Yamanaka
• 👤 矢 山中
• 👤 Junji Hizuka
• 👤 肥塚　淳次

Bibliographic Details