Hydrocracking of high boiling hydrocarbon oils to produce aromatics and fuel gases

Claim 1

A PROCESS FOR THE HIGH TEMPERATURE HYDROCRACKING OF HEAVY LIQUID HYDROCARBONS TO PRODUCE NORMALLY GASEOUS MATERIALS TOGETHER WITH A LIGHT AROMATIC LIQUID FRACTION WITH A MINIMUM YIELD OF OTHER NORMALLY LIQUID MATERIALS, WHICH COMPRISING INJECTING A HYDROCARBON OIL HAVING A RAMSBOTTOM CARBON VALUE OF AT LEAST ABOUT 8 INTO A CRACKING ZONE CONTAINING PARTICULATE SOLIDS AT A TEMPERATURE SUBSTANTIALLY ABOVE 1100*F. AND UNDER A PRESSURE OF AT LEAST 200 P.S.I.G. WITH A HYDROGEN PARTIAL PRESSURE OF AT LEAST 35 P.S.I. THEREBY PRODUCING A GASEOUS OVERHEAD AND DEPOSITING CARBONACEOUS MATERIAL ON THE SOLIDS, PASSING SAID SOLIDS FROM THE CRACKING ZONE TO A COMBUSTION ZONE, CONTACTING SAID SOLIDS IN THE COMBUSTION ZONE WITH AN OXYGEN CONTAINING GAS AND STEAM TO PRODUCE A TEMPERATURE OF AT LEAST 1600*F. THEREBY REMOVING THE CARBONACEOUS DEPOSIT FROM THE SOLIDS AND REHEATING THE SOLIDS TO A PREDETERMINED TEMPERATURE, RETURNING THE REHEATED SOLIDS TO THE CRACKING ZONE, SEPARATING THE EFFLUENT FROM THE REACTOR INTO A GASEOUS FRACTION, A LIGHT NORMALLY LIQUID AROMATIC FRACTION, AND A HEAVY NORMALLY LIQUID FRACTION, RECYCLING TO THE COMBUSTION ZONE SAID HEAVY NORMALLY LIQUID FRACTION IN AN AMOUNT CORRESPONDING TO AT LEAST 5% BY VOLUME OF THE FRESH FEED IN ORDER TO ESTABLISH THE DESIRED HYDROGEN