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公开(公告)号：ES2026873T3
公开(公告)日：1992-05-16
申请号：ES87111764
申请日：1987-08-13
Applicant: PHILLIPS PETROLEUM COMPANY
Inventor： FU, CHIA-MIN
Abstract: Hydrocarbon-containing feed streams (preferably heavy gas oils and hydrotreated residua) having an initial boiling point of at least 400 DEG F are catalytically cracked in the presence of a cracking catalyst comprising a faujasite-type zeolite having a unit cell size of about 24.28-24.48 A and an alkali metal content of less than about 0.5 weight percent and being substantially free of iron ions. Preferably, the faujasite-type zeolite has an atomic Si:Al ratio in the crystalline framework of about 8:1 to 21:1 and has been partially dealuminated by a process comprising steam treatment followed by acid leaching.
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