Chemical refining and catalytic conversion of hydrocarbon oils

Claim 1

A CATALYTIC CRACKING PROCESS EMPLOYING A GAS OIL CHARGING STOCK WHICH CONTAINS ORGANIC NITROGEN COMPOUNDS DELETERIOUS TO THE CATALYTIC CRACKING OF SAID GAS OIL OVER A SOLID CATALYST WHICH PROCESS COMPRISES CONTACTING SAID GAS OIL AT A TEMPERATURE NOT SUBSTANTIALLY ABOVE ATMOSPHERIC TEMPERATURES WITHAT LEAST ONE OXYHALIDE OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF SULFUR AND PHOSPHOROUS IN THE PRESENCE OF A SELECTIVE SOLVENT UNDER CONDITIONS TO FORM AN EXTRACT PHASE AND A RAFFINATE PHASE CONTAINING AS TREATED OIL, THE OXYHALIDE BEING EMPLOYED IN AN AMOUNT BETWEEN 09005 AND 0.2% BY WEIGHT BASED ON GAS OIL AND THE AMOUNT OF OXYHALIDE BEING CORRELATED WITH THE AMOUNT OF NITROGEN IN THE GAS OIL SO THAT BETWEEN ABOUT 0.05 AND 0.5 GRAM MOL OF OXYHALIDE ARE USED PER GRAM ATOM OFNITROGEN IN THE GAS OIL, RECOVERING SAID TREATED OIL FROM THE RAFFINATE PHASE AND CONTACTING SAID TREATED OIL WITH A SOLID TYPE CATALYTIC CRACKING CATALYST UNDER CONDITION TO EFFECT CATALYTIC CRACKING OF SAID TREATED OIL.