Continuous,low pressure catalytic reforming process with sulfur inclusion and water exclusion

Abstract

Abstract A HYDROCARBON CHARGE STOCK BOILING IN THE GASOLINE RANGE IS CONTINUOUSLY REFORMED BY CONTACTING, IN A SUBSTANTIALLY WATER-FREE REFORMING ZONE, THE HYDROCARBON CHARGE STOCK, HYDROGEN AND SULFUR OR A SULFUR-CONTAINING COMPOUND WITH A REFORMING CATALYST CONTAINING A PLATINUM GROUP COMPONENT AT REFORMING CONDITIONS INCLUDING A PRESSURE OF ABOUT 50 TO 350 P.S.I.G. THE SULFUR OR SULFUR-CONTAINING COMPOUND IS CONTINUOUSLY INTRODUCED INTO THE REFORMING ZONE, BOTH DURING START-UP AND THEREAFTER, IN AN AMOUNT, CALCULATED AS ELEMENTAL SULFUR, EQUIVALENT TO ABOUT 300 TO ABOUT 3000 WT. P.P.M. OF THE HYDROCARBON CHARGE STOCK. FURTHER MORE THE AMOUNT OF SULFUR OR THE SULFUR-CONTAINING COMPOUND INTRODUCED INTO THE REFORMING ZONE IS NOT INCREASED AFTER START-UP OF THE PROCESS. KEY FEATURE OF THE RESULTING PROCESS IS THE ABILITY TO CONTINUOUSLY OPERATE UNDER THIS LOW PRESSURE CONDITION IN A STABLE FASHION FOR A CATALYST LIFE OF AT LEAST 15 BARRELS OF CHARGE PER POUND OF CATALYST WITHOUT CATALYST REGENERATION.

Inventors

• 👤 John C Hayes

Bibliographic Details