Patent ID: 8973367
Filing Date: 2015-03-10
Classification: F23D,F23R

Abstract:
1. A fuel lance for a burner, comprising: a tip including a nozzle surface, the nozzle surface including a plurality of fuel nozzles, wherein the nozzle surface also includes a plurality of slots between the fuel nozzles such that at least one slot of the plurality of slots is arranged between a pair of circumferentially adjacent fuel nozzles of said plurality of fuel nozzles, wherein the nozzle surface is a conical annular surface and the plurality of slots run perpendicular to a circumferential direction of the conical annular surface from a first end to a second end of the conical annular surface, and extend through the conical annular surface to a respective one of a plurality of cooling air channels disposed in the tip, wherein each respective one of the plurality of cooling air channels is positioned radially inward of the nozzle surface and between a respective pair of circumferentially adjacent fuel nozzles, and wherein a plurality of through-openings are disposed between each pair of circumferentially adjacent fuel nozzle and slot on the nozzle surface, the through-openings between a respective pair of circumferentially adjacent fuel nozzle and slot being fluidically connected to a respective one of the plurality of cooling air channels.