Patent ID: 7763165
Filing Date: 2010-07-27
Classification: C10G

Abstract:
1. A process for catalytically cracking a heavy hydrocarbon feedstock and obtaining selected hydrocarbon fractions, the process comprising: contacting a heavy hydrocarbon feedstock with a hydrocarbon cracking catalyst having a catalyst composition including a first component comprising a large pore molecular sieve and a second component comprising a zeolite with no greater than medium pore size to produce a hydrocarbon effluent comprising a range of hydrocarbon products, said zeolite with no greater than medium pore size comprising at least 1.0 wt. % of the catalyst composition; separating the hydrocarbon effluent in a separation section to form at least one separator liquid stream and a separator vapor stream, the at least one separator liquid stream comprising C deethanizing at least a portion of the separator vapor stream in a deethanizer to at least form a first deethanizer process stream comprising C depropanizing the second deethanizer process stream to form a first depropanizer process stream comprising C splitting at least a portion of the second depropanizer process stream in a naphtha splitter to at least form a first naphtha splitter process stream comprising primarily compounds containing four to six carbon atoms; cracking at least a portion of the C depropanizing at least a portion of the cracked olefin effluent to form a first cracked olefin effluent process stream comprising C recovering at least a portion of the C