Patent ID: 9296961
Filing Date: 2016-03-29
CPC Classification: C10G

Claim Text:
1. An integrated hydrotreating and steam pyrolysis process for the direct processing of a crude oil to produce olefinic and aromatic petrochemicals, the process comprising: a. separating the crude oil into light components and heavy components; b. charging the light components and hydrogen to a hydroprocessing zone operating under conditions effective to produce a hydroprocessed effluent; c. thermally cracking hydroprocessed effluent in the presence of steam in a steam pyrolysis zone to produce a mixed product stream, wherein the hydroprocessed effluent is heated in a convection section of the steam pyrolysis zone; the heated hydroprocessed effluent is separated into a vapor phase and a liquid phase with a vapor-liquid separation device that includes a pre-rotational element having an entry portion and a transition portion, the entry portion having an inlet for receiving a flowing fluid mixture and a curvilinear conduit; a controlled cyclonic section having an inlet adjoined to the pre-rotational element through convergence of the curvilinear conduit and the cyclonic section and a riser section at an upper end of the cyclonic member through which the vapor phase passes, and a liquid collector/settling section through which the liquid passes; the vapor phase is passed to a pyrolysis section of the steam pyrolysis zone; and the liquid phase is discharged to produce a mixed product stream; d. separating the thermally cracked mixed product stream; e. purifying hydrogen recovered in step (d) and recycling it to step (b); f. recovering olefins and aromatics from the separated mixed product stream; and g. recovering pyrolysis fuel oil from the separated mixed product.