INTEGRATED FLUID CATALYTIC CRACKING AND ALKYLATION PROCESS

摘要

An integrated hydrocarbon conversion process is described. The process includes contacting a heavy hydrocarbon feedstock with a hydrocarbon cracking catalyst in a fluidized reactor zone to produce light olefins to form a fluid catalytic cracker (FCC) effluent stream comprising a range of hydrocarbons. The FCC effluent stream is separated to form at least a stream rich in C4 hydrocarbons which comprises isobutane and 1-butene. The stream rich in C4 hydrocarbons is introduced into an alkylation reaction zone where the isobutane and the 1-butene are alkylated to form a reaction product mixture comprising dimethylhexanes and C9+ hydrocarbons. The reaction product mixture is dehydrocyclized to form a stream rich in xylenes.

主权项

1. An integrated fluid catalytic cracking and alkylation process comprising:
contacting a heavy hydrocarbon feedstock with a hydrocarbon cracking catalyst in a fluidized reactor zone at effective conditions to produce light olefins to form a fluid catalytic cracker effluent stream comprising a range of hydrocarbons; separating the fluid catalytic cracker effluent stream in a separation zone to form at least a stream rich in C4 hydrocarbons, the stream rich in C4 hydrocarbons comprising isobutane and 1-butene; introducing the stream rich in C4 hydrocarbons into an alkylation reaction zone; alkylating the isobutane and the 1-butene in the alkylation reaction zone in the presence of an alkylation catalyst under alkylation conditions to form a reaction product mixture comprising dimethylhexanes and C9+ hydrocarbons; and dehydrocyclizing at least a portion of the reaction product mixture in an aromatization zone in the presence of a dehydrocyclization catalyst under dehydrocyclization conditions to form a stream rich in xylenes.