Hydrodesulfurization of heavy petroleum hydrocarbon oil in a fluidized reaction zone

Abstract

Abstract A PROCESS FOR THE HYDRODESULFURIZATION OF A HEAVY PETROLEUM HYDROCARBON OIL IS PROVIDED, WHEREIN THE OIL, A HYDRODESULFURIZATION CATALYST AND A HYDROGEN-CONTAINING GAS ARE FIRST PASSED INTO A FLUIDIZATION INITIATING ZONE OF A HYDRODESULFURIZING REACTOR; THE MIXTURE IS PASSED UPWARDLY THROUGH A FLUIDIZED REACTION ZONE WHEREIN HYDRODESULFURIZATION OF THE OIL TAKES PLACE; THE REACTION PRODUCT FROM THE FLUIDIZED REACTION ZONE INCLUDING THE HYDRODESULFURIZATION CATALYST IS PASSED INTO A SEPARATING ZONE OF INCREASED CROSS-SECTIONAL AREA COMPARED TO THE CROSS-SECTIONAL AREA OF THE FLUIDIZED REACTION ZONE; THE HYDRODESULFURIZED OIL IS WITHDRAWN FROM THE TOP OF THE SEPARATING ZONE WHILE SUBSTANTIALLY ALL OF THE HYDRODESULFURIZATION CATALYST SEPARATES DOWNWARDLY FROM THE SEPARATING ZONE INTO A CATALYST SETTLING ZONE DUE TO THE INCREASE IN THE CROSS-SECTIONAL AREA OF THE SEPARATING ZONE AND THE RESULTANT DECREASE IN THE FLOW RATE OF THE OIL AND GAS; AND THEREAFTER THE HYDRODESSULFURIZATION CATALYST IS RETURNED FROM THE CATALYST SETTLING ZONE THROUGH THE FLUIDIZATION INITIATION ZONE TO REPEAT THE FOREGOING STEPS.

Inventors

• 👤 Yutaka Oguchi
• 👤 Junichi Kubo

Bibliographic Details