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RESEARCH PAPERS: Gas Turbines: Combustion and Fuels

Test Results of Low NOx Catalytic Combustors for Gas Turbines

[+] Author and Article Information
Y. Ozawa, J. Hirano, M. Sato

Central Research Institute of Electric Power Industry, Yokosuka, Kanagawa, Japan

M. Saiga, S. Watanabe

Kansai Electric Power Co., Inc., Amagasaki, Hyogo, Japan

J. Eng. Gas Turbines Power 116(3), 511-516 (Jul 01, 1994) (6 pages) doi:10.1115/1.2906849 History: Received March 17, 1993; Online April 24, 2008

Abstract

Catalytic combustion is an ultralow NOx combustion method, so it is expected that this method will be applied to a gas turbine combustor. However, it is difficult to develop a catalytic combustor because catalytic reliability at high temperature is still insufficient. To overcome this difficulty, we designed a catalytic combustor in which premixed combustion was combined. By this device, it is possible to obtain combustion gas at a combustion temperature of 1300°C while keeping the catalytic temperature below 1000°C. After performing preliminary tests using LPG, we designed two types of combustor for natural gas with a capacity equivalent to one combustor used in a 20 MW class multican-type gas turbine. Combustion tests were conducted at atmospheric pressure using natural gas. As a result, it was confirmed that a combustor in which catalytic combustor segments were arranged alternately with premixing nozzles could achieve low NOx and high combustion efficiency in the range from 1000°C to 1300°C of the combustor exit gas temperature.

Copyright © 1994 by The American Society of Mechanical Engineers
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