公开(公告)号：US3728251A

公开(公告)日：1973-04-17

申请号：US3728251D

申请日：1968-04-11

Applicant: UNION OIL CO

Inventor： KELLEY A ,  REEG C ,  WOOD F ,  CHEADLE G

IPC: C10G47/16 ,  C10G65/12 ,  C10G69/04 ,  C10G23/02 ,  C10G11/00 ,  C10G13/02

CPC classification number: C10G65/12 ,  C10G47/16 ,  C10G69/04

Abstract: A MINERAL OIL FEEDSTOCK HAVING AN API GRAVIITY BETWEEN -5* AND 20*, LESS THAN 20 WT. PERCENT BOILING BELOW 600* F., AT LEAST 20 WT. PERCENT BOILING ABOVE 80*F. AND CONTAINING CONDENSED POLYAROMATIC, SULFUR AND NITROGEN COMPOUNDS IS INITIALLY SUBJECTED TO CATALYTIC HYDROFINING FOLLOWED BY HYDROCRACKING AT HIGH PRESSURES WITH A GROUP VI-B AND/OR GROUP VIII METAL PROMOTED, CRYYSTALLINR ZEOLITE CATALYST. THE HYDROCRACKING CONDITIONS ARE CHOSEN TO ACHIEVE 2-20% INCREASE IN HYDROGEN CONTENT OF THE 600* F.+ FRACTIION AND NOT MORE THAN 20 WT. PERCENT CONVERSION OF THE 800* F.+ FRACTIION TO LOWER-BOILING HYDROCARBONS. GASOLINE IS RECOVERED AS PRODUCT WHILE SUBJECTING THE HYDROCRACKED PRODUCT BOILING ABOVE 400* F. TO CATALYTIC CRACKING TO RECOVER A CRACKED GASOLINE PRODUCT, A CYCLE OIL AND HEAVY BOTTOMS, SAID BOTTOMS BEING RECYCLED TO THE HYDROFINING REACTION.