Importance

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Abstract

Processes for producing products from crude oil include separating the crude oil into at least a lesser boiling point fraction and a greater boiling point fraction and passing the fractions to a reactor system that includes a riser section and a downer section. An outer boundary of the downer section is defined by a first wall in a plane perpendicular to a central axis, and outer boundaries of the riser section are defined by the first wall and a second wall in the plane perpendicular to the central axis. In an alternate arrangement, an outer boundary of the riser section is defined by a first wall in a plane perpendicular to a central axis, and outer boundaries of the downer section are defined by the first wall and a second wall in the plane perpendicular to the central axis. The process includes cracking the lesser boiling point fraction in the riser section in the presence of a catalyst and cracking the greater boiling point fraction in the downer reactor in the presence of the catalyst. The process includes passing the catalyst from the riser to the downer, from the downer to a regenerator, and from the regenerator to the riser.

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First Claim