Catalyst combustion system, fuel reforming system, and fuel cell system

摘要

A catalyst combustor ( 11 ) includes an inner catalyst combustion portion ( 20 ) connected to a substitute fuel supply line (LS 21, 12, 16 ) and a substitute oxidizer supply line (LS 22, 13 ), an outer catalyst combustion portion ( 40 ) connected to an effluent fuel supply line (LS 23, 14 ) and an effluent oxidizer supply line (LS 24, 15 ), and a fluid communication portion ( 60 ) connecting the inner catalyst combustion portion ( 20 ) and the outer catalyst combustion portion ( 40 ) to each other, and has a fixed relationship provided among a fluid resistance (R₂) of the inner catalyst combustion portion ( 20 ), a fluid resistance (R₄) of the outer catalyst combustion portion ( 40 ), and a fluid resistance (R₆) of the fluid communication portion ( 60 ), whereby substantially a warming catalyst combustion is caused to occur simply in the inner catalyst combustion portion ( 20 ), and a regular catalyst combustion is caused to occur in the inner catalyst combustion portion ( 20 ) and the outer catalyst combustion portion ( 40 ).