Integrated hydroprocessing, steam pyrolysis and slurry hydroprocessing of crude oil to produce petrochemicals

摘要

Crude oil is charged to a hydroprocessing zone in the presence of hydrogen operating under conditions effective to produce a hydroprocessed effluent, which is thermally cracked in the presence of steam in a steam pyrolysis zone to produce a mixed product stream. Heavy components, which are derived from one or more of the hydroprocessed effluent, a heated stream within the steam pyrolysis zone, or the mixed product stream catalytically cracking are charged to a slurry hydroprocessing zone to produce a slurry intermediate product which is then thermally cracked. Olefins and aromatics are recovered from the separated mixed product stream as product.

主权项

1. An integrated hydroprocessing, steam pyrolysis and slurry hydroprocessing process for direct conversion of crude oil to produce olefinic and aromatic petrochemicals, the process comprising:
a. hydroprocessing the crude oil in the presence of hydrogen under conditions effective to produce a hydroprocessed effluent having a reduced content of contaminants, an increased paraffinicity, reduced Bureau of Mines Correlation Index, and an increased American Petroleum Institute gravity; b. thermally cracking hydroprocessed effluent and a slurry process product in the presence of steam in a steam pyrolysis zone under conditions effective to produce a mixed product stream; c. processing residuals or bottoms derived from one or more of the hydroprocessed effluent, a heated stream within the steam pyrolysis zone, or the mixed product stream, in a slurry hydroprocessing zone to produce the slurry process product; d. separating the mixed product stream; e. purifying hydrogen recovered in step (d) and recycling it to the step of hydroprocessing; and f. recovering olefins and aromatics from at least a portion of the separated mixed product stream.