A new concept of a high-temperature catalytic combustor with starting burner and it's combustion characteristics

摘要

A catalytic combustion system has high potential to achieve low NO{sub}x emission level. When this combustion system is applied to a gas turbine, the required combustor performance must be maintained over a wide range of operating conditions from cold starting to steady-state operation. This study proposes a new concept of a catalytic combustor with a direct heating system using vaporizing tube for starting burner in order to downsize the combustor and reduce the warm-up time during cold starts. This paper outlines the operation concept covering cold start, verification of the concept through the experiments with flame visualization in the combustor, construction of the combustor, and combustion characteristics that show low pollution of the catalytic combustion over a wide range of operating conditions.