Conversion of oil residua to lighter hydrocarbons
阅读：712发布：2022-01-18
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1. A PROCESS FOR THE CONVERSION OF A HYDROCARBON OIL RESIDUUM TO A HYDROCARBON CRACKING STOCK BOILING IN A RANGE LOWER THAN THAT OF SAID RESIDUUM, COMPRISING PASSING AN ADMIXTURE OF SUCH A RESIDUUM HAVING A GRAVITY WITHIN THE LIMITS OF 0 TO 25* API AND A BOILING RANGE ABOVE 700* F. AND A NAPHTHENE HYDROCARBON AS A HYDROGEN DONOR MATERIAL, CONTACTING OIL IN A VOLUME RATIO TO SAID HYDROGEN DONOR WITHIN THE LIMITS OF 1:1 TO 10:1 AT A TEMPERATURE WITHIN THE LIMITS OF 700 TO 950* F., INTO A REACTION ZONE CONTAINING A FIRST BED OF A GRANULAR ALUMINA-METAL OXIDE CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINA COMBINED WITH FROM 1 TO 10 PER CENT OF ITS WEIGHT OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF THORIA, TITANIA, AND ZIRCONIA, AND AN ALUMINA-SILICA CONTAINING NOT MORE THAN 25 WEIGHT PER CENT SILICA AND SELECTED FROM THE GROUP CONSISTING OF A SYNTHETIC SILICA-ALUMINA TYPE CATAYLYST AND A NATURAL OCURRING CLAY, DISPOSED IN TANDEM RELATION WITH A SECOND BED OF GRANULAR METAL OXIDE CATALYST SELECTED FROM THE GROUP CONSISTING OF ZIRCONIA COMBINED WITH FROM 10 TO 40 PER CENT OF ITS WEIGHT OF AT LEAST ON OXIDE SELECTED FROM THE GROUP CONSISTING OF ALUMINA, MAGNESIA AND THORIA,
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