Fluid coking process

Claim 1

A FLUID COKING PROCESS COMPRISING INTRODUCING A HEAVY HYDROCARBON OIL INTO A MASS OF HOT, FINELY DIVIDE, INERT COKE PARTICLES HAVING A DIAMETER IN THE RANGE OF ABOUT 20 TO 400 MICRONS MAINTAINED IN A DENSE FLUIDIZED MASS IN A COKING ZONE AT A TEMPERATURE OF 850*F. TO 1250** F. WHEREBY THE OIL IS CONVERTED INTO VAPOROUS PRODUCTS AND COKE, SEPARATING THE VAPOROUS PRODUCTS CONTAINING UNCONVERTED OIL AND HEAVY FRACTIONS OF THE VAPOROUS PRODUCT FROM THE COKE PARTICLES, THEREAFTER CONDENSING A PORTION OF THE SEPARATAED VAPOROUS PRODUCTS BY CONTACTING SAID VAPOROUS PRODUCTS WITH A COOLER STREAM OF FINELY DIVIDED, ENTRAINABLE COKE PARTICLES AT A TEMPERATURE IN THE RANGE OF 50* F. TO 200*F. LESS THAN THE VAPOROUS PRODUCTS WHEREBY UNCOVERTED OIL AND HEAVY PORTIONS OF THE VAPOROUS PRODUCTS ARE CONDENSED AND DEPOSITED THEREON, SEPARATING THE RESIDUAL UNCONDENSED VAPOROUS PRODUCTS FROM SAID COOL COKE PARTICLES CONTAINING UNCONDENSED MATERIALS, STRIPPING THE CONDENSED MATERIALS FROM THE COOL CXOKE PARTICLES BY THE ACTION OF STEAM, AND PASSING THE STRIPPED MATERIALS TOGETHER WITH STEAM AS FLUIDIZING GAS INTO THE BOTTOM OF THE COKING ZONE.