Abstract: The present invention is directed towards modifying the internals of the reactor section of a fluidized coke reactor such that the majority of the hydrocarbon feed will react in the core region of the reactor section and that any hydrocarbon vapour that is produced in the annular region will be released into the core region. Therefore, the present invention reduces the residence time of vapour immediately flashed from the injected hydrocarbon feed, resulting in reduced secondary vapour phase cracking.

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.

Abstract: A fluid coking process is operated in a fluidized bed coking reactor in which a plurality of heavy oil inlet nozzles are arranged in a number of rings around the periphery of the dense bed reaction section at vertically spaced elevations. A heavy oil feed is injected with atomization steam through the nozzles into the fluidized. bed, operating at a lower steam-to-oil ratio for the upper ring or rings of nozzles than for the lower ring or rings.