Fluid coking using high thrust feed nozzles

Abstract

A process for converting a heavy hydrocarbonaceous feedstock to liquid products is provided comprising introducing the hydrocarbonaceous feedstock into a fluid coker comprised in part of a fluidized bed of heated coke particles, the fluidized bed having a high velocity core region of heated coke particles and a low velocity annular region of unreacted hydrocarbon and coke particles using a plurality of high thrust nozzles and reacting the hydrocarbonaceous feedstock with the heated coke particles in the fluid coker to produce the liquid products.

We claim: 
     
         1 . A process for converting a heavy hydrocarbonaceous feedstock to liquid products, comprising:
 introducing the hydrocarbonaceous feedstock into a fluid coker comprised in part of a fluidized bed of heated coke particles, the fluidized bed having a high velocity core region of heated coke particles and a low velocity annular region of unreacted hydrocarbon and coke particles; and   reacting the hydrocarbonaceous feedstock with the heated coke particles in the fluid coker to produce the liquid products;   
       the feedstock being introduced into the fluid coker using a plurality of high thrust nozzles, said nozzles designed to transport unreacted hydrocarbon and coke from the low velocity annular region to the high velocity core region to improve hydrocarbon stripping, reduce gas phase residence time, and increase liquid products yields. 
     
     
         2 . The process as claimed in  claim 1 , whereby the high thrust nozzles have a spray angle of about 3°-160° and a nozzle diameter between about 0.2″ and 0.8″. 
     
     
         3 . The process as claimed in  claim 1 , wherein the high thrust nozzle comprises a diverging section at the tip of the nozzle. 
     
     
         4 . The process as claimed in  claim 1 , wherein the high thrust nozzle comprises a converging section followed by a diverging section at the tip of the nozzle.