Process for cracking oil

Claim 1

THE PROCESS OF COKING A HEAVY HYDROCARBON OIL, WHICH COMPRISES ESTABLISHING A FLUIDIZED BED OF FINELY DIVIDED PREHEATED SOLID PARTICLES IN A REACTION ZONE, DISTRIBUTING THE OIL AS A FILM ON SAID SOLID PARTICLES TO CRACK AND VAPROIZE IT AND FROM A CARBONACEOUS COATING ON THE PARTICLES, CONTINUOUSLY REMOVING A STREAM OF COATED PARTICULATE SOLIDS AND PASSING THEM IN DISPERSE PHASE CONTINUOUSLY UPWARD THROUGH A TRANSFER LINE HEATER AT SUFFICIENT VELOCITY TO KEEP SUBSTANTIALLY ALL THE PARTICLES ENTRAINED IN THE FORM OF A DISPERSE SOLIDS-GAS STREAM, PASSING A COMBUSTION-SUPPORTING GAS WITH SAID PARTICLES THROUGH THE HEATER TO BURN THE CARBONACEOUS COATING MATERIAL AND TO PRODUCE THE SIZE OF THE PARTICLES AND REHEAT THEM, ROUGHLY SEPARATING THE EFFUENT STREAM OF HEATED SOLIDS LEAVING THE TRANSFER LINE HEATER INTO COARSE AND FINIC PARTICLES, RECYCLING THE HOT COARSE PARTICLES DIRECTLY TO THE INLET OF THE HEATER TO MAINTAIN HIGH HEATER TEMPERATURE, AND RETURNING THE HOT FINE PARTICLES TO THE FLUIDIZED BED IN THE REACTION ZONE.