Abstract 1. A PROCESS FOR PDOCUGING JET FUELS BY THE TWO-STAGE HYDROGENATION OF A HYDROCARBON FEED HAVING A BOILING RANGE WITHIN THE TEMPERATURE RANGE OF ABOUT 135* F. TO ABOUT 550* F. AND SUBSTANTIALLY FREE OF SULFUR-CONTAINING IMPURITIES, COMPRISING THE STEPS OF: (A) PASSING THE FEED IN COCURRENT CONTACT WITH A HYDROGEN-RICH GAS THROUGH A FIRST HYDROGENATION ZONE OPERATED AT A TEMPERATURE OF FROM ABOUT 250* F. TO ABOUT 575* F. AND AT ELEVATED PRESSURE IN CONTACT WITH A CATALYST COMPRISING A PLATINUM GROUP METAL TO AT LEAST PARTIALLY HYDROGENATE THE FEED; (B) REMOVING FROM THE FIRST HYDROGENATION ZONE A GAS PHASE EFFLUENT COMPRISING HYDROGEN AND VAPORIZED LIQUID MATERIALS, AND A PARTIALLY HYDROGENATED LIQUID HYDROCARBON EFFLUENT; (C) FURTHER HYDROGENATING THE LIQUID HYDROCARBON EFFLUENT IN A SECOND HYDROGENATION ZONE OPERATED AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 500* F. AT ELEVATED PRESSURE BY PASSING A HYDROGEN-RICH GAS INTO THE SECOND HYDROGENATION ZONE COUNTER-CURRENTLY TO THE LIQUID HYDROCARBON EFFLUENT, IN CONTACT WITH A CATALYST COMPRISING NICKEL; AND (D) DRAWING OFF FROM THE SECOND HYDROGENATION ZONE A GAS PHASE EFFLUENT COMPRISING HYDROGEN AND VAPORIZED LIQUID MATERIAL AND A LIQUID PHASE EFFLUENT COMPRISING JET FUEL.
A PROCESS FOR PDOCUGING JET FUELS BY THE TWO-STAGE HYDROGENATION OF A HYDROCARBON FEED HAVING A BOILING RANGE WITHIN THE TEMPERATURE RANGE OF ABOUT 135* F. TO ABOUT 550* F. AND SUBSTANTIALLY FREE OF SULFUR-CONTAINING IMPURITIES, COMPRISING THE STEPS OF: (A) PASSING THE FEED IN COCURRENT CONTACT WITH A HYDROGEN-RICH GAS THROUGH A FIRST HYDROGENATION ZONE OPERATED AT A TEMPERATURE OF FROM ABOUT 250* F. TO ABOUT 575* F. AND AT ELEVATED PRESSURE IN CONTACT WITH A CATALYST COMPRISING A PLATINUM GROUP METAL TO AT LEAST PARTIALLY HYDROGENATE THE FEED; (B) REMOVING FROM THE FIRST HYDROGENATION ZONE A GAS PHASE EFFLUENT COMPRISING HYDROGEN AND VAPORIZED LIQUID MATERIALS, AND A PARTIALLY HYDROGENATED LIQUID HYDROCARBON EFFLUENT; (C) FURTHER HYDROGENATING THE LIQUID HYDROCARBON EFFLUENT IN A SECOND HYDROGENATION ZONE OPERATED AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 500* F. AT ELEVATED PRESSURE BY PASSING A HYDROGEN-RICH GAS INTO THE SECOND HYDROGENATION ZONE COUNTER-CURRENTLY TO THE LIQUID HYDROCARBON EFFLUENT, IN CONTACT WITH A CATALYST COMPRISING NICKEL; AND (D) DRAWING OFF FROM THE SECOND HYDROGENATION ZONE A GAS PHASE EFFLUENT COMPRISING HYDROGEN AND VAPORIZED LIQUID MATERIAL AND A LIQUID PHASE EFFLUENT COMPRISING JET FUEL.
Claim 2
Dependent Claim
192 words
A PROCESS FOR PDOCUGING JET FUELS BY THE TWO-STAGE HYDROGENATION OF A HYDROCARBON FEED HAVING A BOILING RANGE WITHIN THE TEMPERATURE RANGE OF ABOUT 135* F. TO ABOUT 550* F. AND SUBSTANTIALLY FREE OF SULFUR-CONTAINING IMPURITIES, COMPRISING THE STEPS OF: (A) PASSING THE FEED IN COCURRENT CONTACT WITH A HYDROGEN-RICH GAS THROUGH A FIRST HYDROGENATION ZONE OPERATED AT A TEMPERATURE OF FROM ABOUT 250* F. TO ABOUT 575* F. AND AT ELEVATED PRESSURE IN CONTACT WITH A CATALYST COMPRISING A PLATINUM GROUP METAL TO AT LEAST PARTIALLY HYDROGENATE THE FEED; (B) REMOVING FROM THE FIRST HYDROGENATION ZONE A GAS PHASE EFFLUENT COMPRISING HYDROGEN AND VAPORIZED LIQUID MATERIALS, AND A PARTIALLY HYDROGENATED LIQUID HYDROCARBON EFFLUENT; (C) FURTHER HYDROGENATING THE LIQUID HYDROCARBON EFFLUENT IN A SECOND HYDROGENATION ZONE OPERATED AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 500* F. AT ELEVATED PRESSURE BY PASSING A HYDROGEN-RICH GAS INTO THE SECOND HYDROGENATION ZONE COUNTER-CURRENTLY TO THE LIQUID HYDROCARBON EFFLUENT, IN CONTACT WITH A CATALYST COMPRISING NICKEL; AND (D) DRAWING OFF FROM THE SECOND HYDROGENATION ZONE A GAS PHASE EFFLUENT COMPRISING HYDROGEN AND VAPORIZED LIQUID MATERIAL AND A LIQUID PHASE EFFLUENT COMPRISING JET FUEL.