Combustor and method for supplying fuel to a combustor

A combustor, comprising:

• an end cap that extends radially and axially within a casing of the combustor, wherein the end cap comprises an upstream surface axially separated from a downstream surface and a cap shield circumferentially surrounding the upstream surface and the downstream surface;
• a first fuel plenum defined within the cap shield between the upstream surface and a first barrier;
• a first conduit extending through the upstream surface into the first fuel plenum, wherein the first conduit is oriented to direct a flow of fuel into the first fuel plenum substantially perpendicular to the first barrier;
• a first baffle disposed within the first fuel plenum between the upstream surface and the first barrier, wherein the first conduit is oriented to direct the flow of fuel against the first baffle;
• a first circuit of tubes extending through the upstream surface and the downstream surface within the cap shield, wherein the first circuit of tubes are in fluid communication with the first fuel plenum;
• a second fuel plenum defined within the cap shield between the first barrier and the downstream surface;
• a second conduit extending through the upstream surface, through the first fuel plenum, through the first barrier and into the second fuel plenum, wherein the second conduit is oriented to direct a flow of fuel, steam or diluent into the second fuel plenum substantially perpendicular to the downstream surface;
• and
• a second baffle disposed within the second fuel plenum between the first barrier and the downstream surface, wherein the second conduit is oriented to direct the flow of fuel, steam or diluent against the second baffle;
• a second circuit of tubes extending through the upstream surface and the downstream surface within the cap shield, wherein the second circuit of tubes are in fluid communication with the second fuel plenum.