MULTI-STAGE LIQUID ATOMIZER FOR FLUIDIZED CATALYTIC CRACKING

摘要

A spray nozzle assembly 10 to use multi-stages atomization of liquid feed for fluidized catalytic cracking process is described. The assembly comprises an inner conduit 50 comprising a liquid inlet 22 to let liquid feed flow to enter there through and a passageway to provide a passage to the liquid feed flow. The inner conduit comprises a plurality of sets of discharge orifices disposed at specific locations of the inner conduit to discharge droplets of the liquid feed flow. The assembly 10 further comprises an outer conduit 17 comprising a gas inlet 21 to let a gas stream to enter into the outer conduit. The outer conduit defines a mixing zone 20 where the liquid feed and the gas stream are mixed to achieve the atomization. The mixed flow is discharged through orifices 26 of the spray nozzle tip.