SPRAY NOZZLE FOR FLUIDIZED CATALYTIC CRACKING

摘要

A gas assisted spray nozzle assembly having a nozzle body in the form of a one piece hollow tubular member, such as a single cylindrical pipe section, which defines a mixing zone and a downstream barrel extension zone. A liquid inlet and an impingement pin are supported by said tubular member in opposed relation to each other at the mixing zone, and pressurized gas inlet is provided at an upstream end of the tubular member. The impingement pin in this case has an impingement surface radially offset from a central axis of the mixing zone on a side opposite the liquid inlet for receiving pressurized liquid and redirecting the liquid toward the central axis for enhanced intermixing with and atomization by the pressurized gas stream.

主权项

1. An air assisted spray nozzle assembly comprising:
a nozzle body in the form of a one piece hollow tubular member which defines a mixing zone and a barrel extension zone downstream of the mixing zone longer in axial length than the mixing zone; a liquid inlet supported by said tubular member through which a pressurized liquid stream is directed into said mixing zone; an impingement pin supported by said tubular member and extending into said mixing zone having an impingement surface in substantial alignment with the liquid inlet against which a liquid stream directed into said mixing zone from said liquid inlet impinges; a pressurized gas inlet mounted in an upstream end of said tubular member through which a pressurized gas stream is directed into said mixing chamber along a central axis of said mixing zone for atomizing liquid impinging upon said impingement surface; and a spray tip mounted at a downstream end of said tubular member having a discharge orifice through which said atomized liquid is discharged in a predetermined spray pattern.