Method for upgrading hydrocarbon oils

Claim 1

A CONTINUOUS CYCLIC PROCESS FOR REMOVING NITROGEN, SULFUR AND OXYGEN FROM A HYDROCARBON OIL CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID OIL WITH HYDROGEN AT A TEMPERATURE BETWEEN ABOUT 400 AND 1000* F. IN A PRIMARY CONTACT ZONE CONTAINING A CRYSTALLINE MOLECULAR SIEVE MATERIAL HAVING UNIFORM PORE OPENINGS OF BETWEEN ABOUT 4 AND ABOUT 15 ANGSTROMS IN DIAMETER AND HAVING ENCASED WITHIN ITS CRYSTALLINE STRUCTURE BETWEEN ABOUT 1 AND ABOUT 60 WEIGHT PERCENT OF A NON-VOLATILE TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF GALLIUM, BORON, GERMANIUM, TIN, ANTIMONY, BISMUTH AND THEIR OXIDES, SAID NON-VOLATILE TREATING AGENTS BEING CONVERTED TO A LOWER BOILING COMPOUND OF SAID TREATING AGENTS WHICH IS RELEASED FROM SAID MOLECULAR SIEVE MATERIAL, PASSING THE EFFLUENT STREAM FROM SAID PRIMARY CONTACT ZONE TO A SECONDARY CONTACT ZONE CONTAINING A CRYSTALLINE MOLECULAR SIEVE MATERIAL HAVING UNIFORM PORE OPENINGS OF BETWEEN ABOUT 4 AND ABOUT 15 ANGSTROMS IN DIAMETERE INITIALLY FREE OF TREATING AGENT AND MAINTAINED UNDER CONDITIONS CAPABLE OF ADSORBING SAID LOWER BOILING COMPOUND, WHEREBY THE LOWER BOILING COMPOUND OF THE TREATING AGENT IN SAID EFFLUENT STREAM FROM SAID PRIMARY ZONE IS ADSORBED ON THE MOLECULAR SIEVE MATERIAL IN SAID SECOND-