Patent ID: 8663348

Claim:
An injection device for use in a reactor injector feed assembly comprising: a plurality of substantially concentric conduits coupled to a modular tip comprising a plurality of substantially annular nozzles; an outer surface extending into a cavity such that said outer surface is exposed to a source of heat within the cavity; a cooling fluid supply plenum; a cooling fluid return plenum; a plurality of cooling channels defined within said injection device, each of said cooling channels is at least one of radially and axially inward of said outer surface and coupled in flow communication with said cooling fluid supply and return plenums, wherein said plurality of cooling channels comprises a plurality of radially outer cooling channels, a plurality of radially inner cooling channels, and a plurality of substantially circumferential cooling channels, wherein said plurality of radially outer cooling channels comprises: at least one radially outer cooling channel inlet coupled in flow communication with said cooling fluid supply plenum; and at least one radially outer cooling channel outlet coupled in flow communication with said coolant fluid return plenum; and at least one coolant distribution device coupled in flow communication with said plurality of cooling channels to facilitate removing heat from at least a portion of said outer surface.