TWO CATALYST STAGE HYDROCARBON CRACKING PROCESS

A two stage catalytic cracking process wherein a heavy cycle gas oil fraction (HCGO) nominal boiling range 315 DEG C to 565 DEG C (600 DEG F to 1050 DEG F), API gravity of -10 DEG to +10 DEG and 65 to 95 vol% aromatics is recycled to extinction between an ebullated bed hydrocracking zone (50) and a...

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Bibliographische Detailangaben
Hauptverfasser:	NONGBRI, GOVANON, LIVINGSTON, WILLIAM B, NELSON, GERALD V, SCHRADER, CHARLES H, BELLINGER, MICHAEL P, PRATT, ROY E, SAYLES, SCOTT M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	A two stage catalytic cracking process wherein a heavy cycle gas oil fraction (HCGO) nominal boiling range 315 DEG C to 565 DEG C (600 DEG F to 1050 DEG F), API gravity of -10 DEG to +10 DEG and 65 to 95 vol% aromatics is recycled to extinction between an ebullated bed hydrocracking zone (50) and a fluidized catalytic cracking zone (2) to yield a liquid fuel and lighter boiling range fraction (19,62) as the light fraction from each zone. The catalyst in the fluidized catalytic cracking zone is maintained at a micro activity 68 to 72 while cracking a virgin gas oil to HCGO (20). HCGO is then mixed with vacuum residuum (40) and hydrocracked in an ebullated bed reactor. The mid range fraction (64) is recycled to the fluidized catalytic cracking zone. The 540 DEG C (1000 DEG F) (66) fraction is blended with a fuel oil.