Abstract 1. A PROCESS FOR THE CONVERSION OF A RESIDUE-CONTAINING PETROLEUM FRACTION HAVING AN INITIAL BOILING POINT OF ABOUT 850*F. INTO LIGHTER PRODUCTS WHICH COMPRISES MAINTAINING IN A HYDRODESULFURIZATION ZONE A FIRST CATALYTIC ZONE BELOW AND A SECOND CATALYST ZONE A POINT OF ENTRY INTO SAID HYDRODESULFURIZATION ZONE, EACH OF SAID CATALYTIC ZONES CONTAINING A HYDRODESULFURIZATION CATALYST COMPRISING AN IRON GROUP METAL HYDROGENATION COMPONENT ON A REFRACTORY INORGANIC OXIDE SUPPORT OF SUBSTANTIALLY NO CRACKING ACTIVITY, THE CATALYST IN SAID FIRST CATALYTIC ZONE HAVING A SURFACE AREA OF FROM 250 TO 600 M.2/G. AND A POUR VOLUME OF FROM 0.6 TO 1.0 CC./G., INTRODUCING THE RESIDUE-CONTAINING PETROLEUM FRACTION THROUGH SAID POINT OF ENTRY INTO SAID HYDRODESULFURIZATION ZONE, MAINTAINING SAID FIRST AND SAID SECOND CATALYTIC ZONE AT A TEMPERATURE BETWEEN ABOUT 600 AND 775*F. AND A PRESSURE BETWEEN ABOUT 500 AND 5000 P.S.I.G., INTRODUCING HYDROGEN INTO SAID FIRST CATALYTIC ZONE TO FLOW UPWARDLY SERIALLY THROUGH SAID FIRST AND SAID CATALYST ZONES AND COUNTERCURRENT TO A PORTION OF SAID RESIDUE-CONTAINING PETROLEUM FRACTION AT A RATE OF AT LEAST 3000 S.C.F. PER BARREL TO RESIDUE-CONTAINING PETROLEUM FRACTION SUFFICIENT TO MAINTAIN LIQUID HYDROCARBON IN SAID SECOND CATALYTIC ZONE, SEPARATLEY RECOVERING PRODUCT FROM SAID FIRST AND SECOND CATALYTIC ZONE, CATALYTICALLY CRACKING THE OVERHEAD PRODUCT FROM SAID SECOND CATALYTIC ZONE AND SEPARATELY CATALYTICALLY CRACKING THE BOTTOMS FROM SAID FIRST CATALYTIC ZONE.
Inventors
👤 R Wilson
👤 R Peck
👤 F Guptill
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-02 23:45
CPC Classifications
C; C10; C10G; C10G67/00; C10G47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
A PROCESS FOR THE CONVERSION OF A RESIDUE-CONTAINING PETROLEUM FRACTION HAVING AN INITIAL BOILING POINT OF ABOUT 850*F. INTO LIGHTER PRODUCTS WHICH COMPRISES MAINTAINING IN A HYDRODESULFURIZATION ZONE A FIRST CATALYTIC ZONE BELOW AND A SECOND CATALYST ZONE A POINT OF ENTRY INTO SAID HYDRODESULFURIZATION ZONE, EACH OF SAID CATALYTIC ZONES CONTAINING A HYDRODESULFURIZATION CATALYST COMPRISING AN IRON GROUP METAL HYDROGENATION COMPONENT ON A REFRACTORY INORGANIC OXIDE SUPPORT OF SUBSTANTIALLY NO CRACKING ACTIVITY, THE CATALYST IN SAID FIRST CATALYTIC ZONE HAVING A SURFACE AREA OF FROM 250 TO 600 M.2/G. AND A POUR VOLUME OF FROM 0.6 TO 1.0 CC./G., INTRODUCING THE RESIDUE-CONTAINING PETROLEUM FRACTION THROUGH SAID POINT OF ENTRY INTO SAID HYDRODESULFURIZATION ZONE, MAINTAINING SAID FIRST AND SAID SECOND CATALYTIC ZONE AT A TEMPERATURE BETWEEN ABOUT 600 AND 775*F. AND A PRESSURE BETWEEN ABOUT 500 AND 5000 P.S.I.G., INTRODUCING HYDROGEN INTO SAID FIRST CATALYTIC ZONE TO FLOW UPWARDLY SERIALLY THROUGH SAID FIRST AND SAID CATALYST ZONES AND COUNTERCURRENT TO A PORTION OF SAID RESIDUE-CONTAINING PETROLEUM FRACTION AT A RATE OF AT LEAST 3000 S.C.F. PER BARREL TO RESIDUE-CONTAINING PETROLEUM FRACTION SUFFICIENT TO MAINTAIN LIQUID HYDROCARBON IN SAID SECOND CATALYTIC ZONE, SEPARATLEY RECOVERING PRODUCT FROM SAID FIRST AND SECOND CATALYTIC ZONE, CATALYTICALLY CRACKING THE OVERHEAD PRODUCT FROM SAID SECOND CATALYTIC ZONE AND SEPARATELY CATALYTICALLY CRACKING THE BOTTOMS FROM SAID FIRST CATALYTIC ZONE.
Claim 2
Dependent Claim
222 words
A PROCESS FOR THE CONVERSION OF A RESIDUE-CONTAINING PETROLEUM FRACTION HAVING AN INITIAL BOILING POINT OF ABOUT 850*F. INTO LIGHTER PRODUCTS WHICH COMPRISES MAINTAINING IN A HYDRODESULFURIZATION ZONE A FIRST CATALYTIC ZONE BELOW AND A SECOND CATALYST ZONE A POINT OF ENTRY INTO SAID HYDRODESULFURIZATION ZONE, EACH OF SAID CATALYTIC ZONES CONTAINING A HYDRODESULFURIZATION CATALYST COMPRISING AN IRON GROUP METAL HYDROGENATION COMPONENT ON A REFRACTORY INORGANIC OXIDE SUPPORT OF SUBSTANTIALLY NO CRACKING ACTIVITY, THE CATALYST IN SAID FIRST CATALYTIC ZONE HAVING A SURFACE AREA OF FROM 250 TO 600 M.2/G. AND A POUR VOLUME OF FROM 0.6 TO 1.0 CC./G., INTRODUCING THE RESIDUE-CONTAINING PETROLEUM FRACTION THROUGH SAID POINT OF ENTRY INTO SAID HYDRODESULFURIZATION ZONE, MAINTAINING SAID FIRST AND SAID SECOND CATALYTIC ZONE AT A TEMPERATURE BETWEEN ABOUT 600 AND 775*F. AND A PRESSURE BETWEEN ABOUT 500 AND 5000 P.S.I.G., INTRODUCING HYDROGEN INTO SAID FIRST CATALYTIC ZONE TO FLOW UPWARDLY SERIALLY THROUGH SAID FIRST AND SAID CATALYST ZONES AND COUNTERCURRENT TO A PORTION OF SAID RESIDUE-CONTAINING PETROLEUM FRACTION AT A RATE OF AT LEAST 3000 S.C.F. PER BARREL TO RESIDUE-CONTAINING PETROLEUM FRACTION SUFFICIENT TO MAINTAIN LIQUID HYDROCARBON IN SAID SECOND CATALYTIC ZONE, SEPARATLEY RECOVERING PRODUCT FROM SAID FIRST AND SECOND CATALYTIC ZONE, CATALYTICALLY CRACKING THE OVERHEAD PRODUCT FROM SAID SECOND CATALYTIC ZONE AND SEPARATELY CATALYTICALLY CRACKING THE BOTTOMS FROM SAID FIRST CATALYTIC ZONE.