US 2026/0308460 A1Published application

Counter-current downer reactor for catalytic cracking testing system and method

AssigneesSaudi Arabian Oil Company, King Abdullah University of Science and Technology

InventorsMengmeng Cui, Pedro Castano, Talal Aldugman, Khalid Ali Almajnouni, Lujain R. Alfilfil, Nikolaos Papagiannis, Isa Al Aslani, Jorge Gascon Sabate

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Abstract

Methods for processing hydrocarbons may include introducing a hydrocarbon feed stream into a reactor vessel through a hydrocarbon feed inlet proximate a bottom end of the reactor vessel, introducing a catalyst into the reactor vessel through a catalyst inlet proximate a top end of the reactor vessel, and contacting the hydrocarbon feed stream with the catalyst in a reaction zone of the reactor vessel in a counter-current orientation to produce a cracked hydrocarbon stream and a spent catalyst. The hydrocarbon feed stream may be introduced into the reactor vessel by passing the hydrocarbon feed stream through a fluid distribution ring of a hydrocarbon feed inlet. The catalyst may be introduced into the reactor vessel through the catalyst inlet by passing a fluidization gas through a fluid distribution ring into a catalyst container housing a catalyst feed, and then passing the catalyst from the catalyst container to the catalyst inlet.

Claims20

Dependent claims

A method for processing hydrocarbons, the method comprising:

introducing a hydrocarbon feed stream into a reactor vessel through a hydrocarbon feed inlet proximate a bottom end of the reactor vessel by passing the hydrocarbon feed stream through a fluid distribution ring of the hydrocarbon feed inlet, wherein the fluid distribution ring comprises:
a housing defining a central bore at an axial center of the housing and a distribution chamber surrounding the central bore in a radial direction and separated from the central bore by an inner wall;
a fluid inlet extending through an outer wall of the housing from an exterior of the housing to the distribution chamber;
and
a plurality of distribution channels extending through the inner wall of the housing and fluidly connecting the distribution chamber to the central bore;
introducing a catalyst into the reactor vessel through a catalyst inlet proximate a top end of the reactor vessel;
contacting the hydrocarbon feed stream with the catalyst in a reaction zone of the reactor vessel to produce a cracked hydrocarbon stream and a spent catalyst, wherein the hydrocarbon feed stream has a net upward superficial velocity through the reaction zone and the catalyst has a net downward superficial velocity through the reaction zone.

4 more elements

A method for processing hydrocarbons, the method comprising:

introducing a hydrocarbon feed stream into a reactor vessel through a hydrocarbon feed inlet proximate a bottom end of the reactor vessel;
introducing a catalyst into the reactor vessel through a catalyst inlet proximate a top end of the reactor vessel by:
passing a fluidization gas through a fluid distribution ring into a catalyst container housing a catalyst feed, wherein the fluid distribution ring comprises:
a housing defining a central bore at an axial center of the housing and a distribution chamber surrounding the central bore in a radial direction and separated from the central bore by an inner wall;
a fluid inlet extending through an outer wall of the housing from an exterior of the housing to the distribution chamber;
and
a plurality of distribution channels extending through the inner wall of the housing and fluidly connecting the distribution chamber to the central bore;
and
passing the catalyst from the catalyst container to the catalyst inlet;
contacting the hydrocarbon feed stream with the catalyst in a reaction zone of the reactor vessel to produce a cracked hydrocarbon stream and a spent catalyst, wherein the hydrocarbon feed stream has a net upward superficial velocity through the reaction zone and the catalyst has a net downward superficial velocity through the reaction zone.

7 more elements

Dependencies are inferred from the claim text.