Patent ID: 6993912

Claim:
A low-emissions combustion system for a gas turbine engine comprising: a Catalyst (CAT) combustion sub-system adapted to controllably generate combustion products under a lean premixed fuel/air condition in the presence of a catalyst, the CAT combustion sub-system communicating with a fuel injection sub-system and an air supply sub-system communicating with a compressor; a Dry-Low-Emissions (DLE) combustion sub-system adapted to controllably generate combustion products under a lean premixed fuel/air condition, the DLE combustion sub-system communicating with a fuel injection sub-system and an air supply sub-system communicating with said compressor; a combustor communicating with the DLE and CAT combustion sub-systems for delivering the combustion products in adequate inlet conditions to an annular turbine of the engine; and a thermal reactor disposed between the CAT combustion sub-system and the combustor, said communication between the CAT combustion sub-system and the combustor being provided at least partially by the thermal reactor, the DLE combustion sub-system communicating with the combustor independent of the thermal reactor.