Patent ID: 8828109

Claim:
A method of assembling an injection device having an axial centerline for use in a reactor injector feed assembly, said method comprising: extending an injection device at least partially into a gasification reactor, wherein the injection device includes a plurality of substantially concentric conduits coupled to a modular tip and at least one outer surface, the modular tip includes a plurality of substantially annular nozzles defined therein, oriented such that at least two of the substantially concentric conduits are coupled in fluid communication with a respective at least two of the substantially annular nozzles, wherein the plurality of substantially annular nozzles include at least one nozzle orientated divergently with respect to the axial centerline and at least one nozzle orientated convergently with respect to the axial centerline, the at least one divergently orientated nozzle and the at least one convergently orientated nozzle are configured to form a first recirculation zone and a second recirculation zone within the gasification reactor; and forming at least one layer of insulation about at least a portion of the at least one outer surface to facilitate insulating at least a portion of the injection device from heat within the gasification reactor.