Feed nozzle assembly for a catalytic cracking reactor

Abstract

Reactor vessel and a feed nozzle assembly for feeding a gas and a liquid into such reactor vessel. The feed nozzle assembly comprises an outer tube supplying a first liquid feed, such as oil, an inner tube supplying a dispersion gas, such as steam, a third tube supplying a second liquid feed, such as biomass, and a nozzle end. A catalytic cracking process wherein two or more hydrocarbon liquids are jointly dispersed into a dispersion gas and jetted via the same feed nozzle assembly into a catalytic cracking reactor.

What is claimed is: 
     
         1 . A catalytic cracking reactor comprising one or more feed nozzle assemblies, wherein at least one of the feed nozzle assemblies comprises:
 an outer tube extending between a first liquid feed inlet and a nozzle outlet;   an inner tube comprising purging orifices in an upstream half of the inner tube and with a downstream section having a gas outlet, the downstream section of the inner tube being arranged within the outer tube to define an annular conduit, wherein the nozzle outlet of the outer tube is downstream in line with the gas outlet of the inner tube;   a third tube with one end connected to a second liquid feed inlet and an opposite end with an outlet, at least the outlet being positioned within the annular conduit upstream the gas outlet.   
     
     
         2 . A catalytic cracking reactor according to  claim 1 , wherein at least one of the feed nozzle assemblies is a side entry feed nozzle assembly. 
     
     
         3 . A catalytic cracking process wherein a first liquid hydrocarbon fraction is dispersed into a dispersion gas and jetted via one or more feed nozzle assemblies into a catalytic cracking reactor, wherein one or more further hydrocarbon fractions are also fed to the feed nozzle assembly and jointly dispersed with the first hydrocarbon fraction. 
     
     
         4 . A catalytic cracking process according to  claim 3 , wherein the first liquid hydrocarbon feed is oil and the one or more further hydrocarbon fractions include at least one biomass fraction.