Hydrodesulfurization process with suspended catalyst and regeneration of the catalyst

Claim 1

THE PROCESS FOR HYDRODESULFURIZING A HIGH BOILING HYDROCARBON WITH COMPRISEES PASSING THE HIGH BOILING HYDROCARBON SUBSTANTIALLY IN LIQUID PHASE TOGETHER WITH HYDROGEN AND A FINELY DIVIDED HYDROGENATION CATALYST THROUGH A REACTOR AT A TEMPERATURE BETWEEN ABOUT 750* AND 1000* F. AND AT A PRESSURE BETWEEN ABOUT 200 AND 1500 P.S.I.G. REMOVING A STREAM OF LIQUID AND VAPOR REACTION PRODUCTS, CATALYST AND HYDROGEN FROM THE REACTOR, COOLING THE REACTION PRODUCTS, CATALYST AND HYDROGEN, SEPARATING HYDROGEN FROM THE REACTION PRODUCTS AT ELEVATED PRESSURE, RECYCLING AT LEAST PART OF THE SEPARATED HYROGEN SEPARATING CATALYST FROM MOST OF THE REACTION PRODUCTS, SAID SEPARATION TAKING PLACE AT SUBSTANTILLY THE REACTION PRESSURE AND BEING IMCOMPLETE SO THAT A PORTION OF THE LIQUID REACTION PRODUCTS REMAINS IN CONTACT WITH THE SEPARATED CATALYST TO FORM A CONCENTRATE OF CTALYST IN HYDROCARBON LIQUID, REMOVING AT LEAST PART OF THE CONCENTRATED OF CATALYST AND ACCOMPANYING LIQUID HYDROCARBON FROM THE HIGH PRESSURE SYSTEM, REMOVING THE SEPARATED REACTION PRODUCTS FROM THE HIGH PRESSURE SYSTEM AND SUBJECTING THEM TO DISTILLATION, TREATING THE REMOVED PORTION OF THE CONCENTRATE TO SEPARATE A SUBSTANTIAL AMOUNT OF THE ACCOMPANYING LIQUID HYDROCARBON FROM THE CATALYST PARTICLES, INTRODUCING THE CATALYST PARTICLES INTO A REGENERATOR, REGENERATING THE CATALYST THEREIN BY COMBUSTION WHILE THE CATALYST PARTICLES ARE FLUIDIZED, I.E. WHILE THE CATALYST PARTICLES ARE SUSPENDED IN REGERATION GASES, AND RETURNING REGENERATED CATALYST INTO CONTACT WITH FRESH HIGH BOILING HYDROCARBON AND HYDROGEN UNDER THE ABOVE-DESIGNATED REACTION CONDITIONS.