Conversion of hydrocarbons

Claim 1

A PROCESS WHEREIN DYDROCARBONS ARE CONVERTED WHICH COMPRISES INJECTING A NORMALLY LIQUID, HEAVY PETROLEUM OIL INTO A FUELS COKING ZONE CONTAINING PARTICULATE COKE MAINTAINED AS A RELATIVELY DENSE FLUIDIZED BED AT A TEMPERATURE BELOW 1200''F. WHEREBY SAID HEAVY PETEOLEUM OIL UNDERGOES PYROLYSIS UPON CONTACT WITH SAID PARTICULATE COKE EVOLVING SUBSTANTIAL QUANTITIES OF RELATIVELY LIGHT HYDROCARBON VAPORS HAVING LESS THAN 6 CARBON ATOMS AND INCLUDING ETHANE, DISTILLATE VAPORS AND HEAVY ENDS, SEPARATING THUS FORMED LIGHT HYDROCARBON VAPORS HAVING LESS THAN 6 CARBON ATOMS AND CONTACTING SAID VAPORS WITH ANOTHER PORTION OF PARTICULATE COKE MAINTAINED AT A TEMPERATURE ABOVE 1200''F. IN A TRANSFER INE REACTOR ZONE TO OBTAIN ETHANE CONVERSIONS IN THE RANGE OF 50-60% PER PASS, SEPARATING AS PRODUCT THE EFFLUENT OF SAID TRANSFER LINE REACTOR ZONE FROM SAID PORTIONS OF PARTICULATE COKE, CIRCULATING PARTICULATE COKE SO SEPARATED TO A COMBUSTION ZONE TO BE PARTIALLY COMBUSTED AND HEATED THEREIN TO A TEMPERATURE IN THE RANGE OF900'' TO 2000'' F., AT LEAST A PORTION OF THE COKE BEING HEATED TO A TEMPERATURE ABOVE THE TEMPERATURE IN SAID TRANSFER LINE REACTOR ZONE, AND PASSING HEATED COKE TO SAID FUELS COKING ZONE AND TO SAID TRANSFER LINE REACTOR ZONE.