The present invention relates to an injector nozzle defining a passage for
a flow of reactants to be injected into a loop reactor suitable for
olefin slurry polymerization, consisting essentially of a fluid conduit
extending into a discharge orifice portion to be connected to an opening
in the reactor wherein the passage of the discharge orifice portion has a
non-circular cross-section and the passage of the fluid conduit has a
circular cross-section. The invention also relates to the use of the
injector nozzle for injecting reactants into a loop reactor suitable for
olefin polymerization reaction, wherein said injector nozzle is connected
on an inner three quarter circle on or above an elbow section of the
reactor.