Feed injection system for catalytic cracking process

Details Feed injection system for catalytic cracking process Feed injection system for catalytic cracking process

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01) B01J 8/24 (2006.01) B01J 19/26 (2006.01)

Patent

CA 2383826

A nozzle for use in a fluid catalytic cracking unit comprising: a first conduit for providing a passageway for enabling a first dispersing gas to flow therethrough; a first cap covering the end of said first conduit, said first cap including at least one outlet passageway therethrough adapted for discharging said first dispersing gas into a liquid hydrocarbon feed material; a second conduit enclosing said first conduit and spaced therefrom to form an annulus therebetween thereby providing a passageway for enabling said liquid hydrocarbon feed material to flow therethrough; a second cap covering the end of said second conduit, said second cap being spaced from said first cap thereby forming a mixing zone therebetween for mixing said liquid hydrocarbon feed and said first dispersing gas and said second cap including at least one circular slot as outlet passageway therethrough, which passageway is substantially aligned with the outlet passageway on said first cap and is adapted for discharging said mixture of said liquid hydrocarbon feed and said first dispersing gas.

Une buse à utiliser dans une unité de craquage catalytique fluide comprend : un premier conduit destiné à fournir un passage permettant l'écoulement d'un premier gaz dispersant; une première coiffe recouvrant l'extrémité du premier conduit, cette première coiffe comprenant au moins un passage de sortie adapté pour évacuer ledit premier gaz dispersant dans une matière d'alimentation hydrocarbure liquide ; un second conduit renfermant le premier conduit, ce second conduit étant placé à une certaine distance du premier conduit de façon à créer un espace annulaire intermédiaire formant un passage permettant à la matière d'alimentation hydrocarbure liquide de s'évacuer. une seconde coiffe recouvrant l'extrémité du second conduit, espacée de la première de façon à former une zone de mélange intermédiaire pour mélanger la matière d'alimentation hydrocarbure liquide et premier gaz dispersant, ladite seconde coiffe comprenant au moins une fente circulaire formant un passage de sortie, ce passage est sensiblement aligné avec le passage de sortie de la première coiffe et est adapté pour évacuer le mélange de la matière d'alimentation formé d'hydrocarbure liquide et du gaz dispersant.

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