Method of preparing hydrocarbon feed stocks containing asphaltic material for catalytic cracking

Claim 1

A PROCESS FOR CONVERSION OF ORGINAL PETROLEUM STOCKS OF BROAD BOILING RANGE CONTAINING VAPORIZABLE FRACTIONS AND HEAVY LIQUID OIL AND ASPHALT FRACTIONS AT ELEVATED TEMPERATURES IN THE PRESENCE OF A MOVING CONTACT MATERIAL WHICH COMPRISES, HEATING SAID PETROLEUM STOCK TO A TEMPERATURE BELOW THAT AT WHICH SUBSTANTIAL THERMAL CRACKING WOULD OCCUR BUT SUFFICIENTLY HIGH TO EFFECT VAPORIZATION OF A SUBSTANTIAL PORTION OF SAID STOCK, SEPARATING THE VAPORIZED PORTION FROM THE NON-VAPORIZED PORTION OF SAID STOCK, EFFECTING REMOVAL OF ASPHALT MATERIAL FROM SAID NON-VAPORIZED PORTION, BRINGING THE DEASPHALTED NON-VAPORIZED PORTION INTO CONTACT WITH A MOVING CONTACT MATERIAL AT SUITABLE ELEVATED CONVERSION TEMPERATURES TO EFFECT CONVERSION OF SAID NON-VAPORIZED PORTION, ALSO BRINGING SAID VAPORIZED PORTION INTO CONTACT WITH SAID CONTACT MATERIAL AT ELEVATED CONVERSION TEMPERATURES TO EFFECT THE DESIRED CONVERSION OF SAID VAPORIZED PORTION AND SEPARATING THE MIXED CONVERSION PRODUCTS OF SAID PORTIONS FROM SAID CONTACT MATERIAL.