Patent ID: 9255230
Filing Date: 2016-02-09
CPC Classification: C10G

Claim Text:
1. An integrated hydrotreating and steam pyrolysis process for the direct processing of crude oil to produce olefinic and aromatic petrochemicals, the process comprising: a. charging the crude oil and hydrogen to a hydroprocessing zone operating 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 at least a portion of the hydroprocessed effluent by heating hydroprocessed effluent in a convection section of a steam pyrolysis zone, separating the heated hydroprocessed effluent into a vapor fraction and a liquid fraction, passing the vapor fraction to a pyrolysis section of a steam pyrolysis zone to produce a mixed product stream, and discharging the liquid fraction, wherein separating the heated hydroprocessed effluent is with a vapor-liquid separation device that includes c. separating the thermally cracked mixed product stream into hydrogen, olefins, aromatics and pyrolysis fuel oil; d. purifying hydrogen recovered in step (c) and recycling it to step (a); e. recovering olefins and aromatics from at least a portion of the separated mixed product stream; and f. recovering pyrolysis fuel oil from at least a portion of the separated mixed product stream.