Chevron U.s.a. Inc.

Jeff Johns

Hye Kyung Cho Timken

Douglas Gayle McDaniel

John V Heyse

Rahul Shankar Bhaduri

Viorel Duma

Anthony Terrell Tanner

Edward Earl Eden, Jr

Saleh Ali Elomari

Hye-Kyung Cho Timken

Thomas Van Harris

Huping Luo

Hye Kyung Timken

Steven Alden Souers

David Lawrence Cooke

David Michael Bosi

Greg A Mullek

Clay Duncan, Jr

Maggie A Eaves

Charles R Davis, Jr

A process for shutting down a hydroprocessing reactor and for removing catalyst from the reactor, wherein the reactor includes a quench gas distribution system. The process comprises shutting off hydrocarbon feed to the reactor, stripping hydrocarbons from the catalyst, and cooling the reactor to a first threshold reactor temperature in the range of from 375-425&#xb0; F. (190-218&#xb0; C.). At least a portion of circulating gaseous medium flowing to the reactor is then routed through a temporary heat exchanger and cooling the gas to not less than 40&#xb0; F. (4&#xb0; C.). Once cooled, mixing the cooled gas with the circulating gaseous medium flowing to the reactor. Continuing steps routing and cooling until a second threshold temperature is reached wherein the reactor temperature is in a range between 120&#xb0; F. and 250&#xb0; F. (49&#xb0; C.-121&#xb0; C.). The reactor can then be purged with Ngas, followed by introducing water into the reactor via the quench gas distribution system. The catalyst can then be safely removed from the reactor.

Accelerated cooling process for reactors

Provided is a hydro-regeneration catalyst system, comprising:

Regeneration of an ionic liquid catalyst by hydrogenation using a macroporous noble metal catalyst

A process is provided for removing a heavy polynuclear aromatic (HPNA) compound from a hydrocarbon oil. The process includes contacting the hydrocarbon oil containing the HPNA compound with a lean hydrocarbon-immiscible liquid stream to produce a mixture comprising the hydrocarbon oil and a rich hydrocarbon-immiscible liquid containing the HPNA compound; and separating the mixture to produce a hydrocarbon oil effluent having a reduced level of the HPNA compound and a hydrocarbon-immiscible liquid effluent containing the HPNA compound. The hydrocarbon-immiscible liquid can be a halometallate ionic liquid, a liquid coordination complex, or a combination thereof.

Extraction of heavy polynuclear aromatics from heavy oil

Disclosed herein is a catalyst dumping spool assembly for unloading used catalyst from an inside of a reactor, comprising: a reactor, and a catalyst dumping spool comprising a first end operatively connected to the reactor, the first end having a catalyst inlet through which the used catalyst is introduced into, a second end having a catalyst discharge outlet whereby the used catalyst exits the catalyst dumping spool, wherein a first device for controlling used catalyst transfer into the catalyst inlet is positioned proximate the first end, and a second device for controlling the used catalyst transfer from inside the catalyst inlet through the catalyst discharge outlet is positioned proximate the second end, and further wherein the catalyst dumping spool further comprise a gas fluidization inlet and a water fluidization inlet located between the first and second devices.

Catalyst dumping spool assembly

Processes for shutting down a regeneration reactor and for removing spent solid from the regeneration reactor may comprise shutting off a feed comprising an ionic liquid to the regeneration reactor, cooling the regeneration reactor, removing at least a portion of the ionic liquid from the regeneration reactor, purging the regeneration reactor with Ngas, introducing water into the regeneration reactor to form an acidic liquid in the regeneration reactor, and dumping the acidic liquid and the spent solid from the regeneration reactor. The acidic liquid may be neutralized with a basic liquid to provide a neutralized liquid. The spent solid may be separated from the neutralized liquid. In an embodiment, noble metal(s) may be recovered from the spent solid.

Safe unloading and disposal of ionic liquid catalyst contaminated spent solids

The present disclosure provides a macroporous noble metal catalyst and processes employing such catalysts for the regeneration of deactivated ionic liquid catalyst containing conjunct polymer.

Processes for shutting down a hydroprocessing reactor and for removing catalyst from the reactor may comprise shutting off hydrocarbon feed to the reactor, stripping hydrocarbons from the catalyst, cooling the reactor to a first threshold reactor temperature, purging the reactor with Ngas, introducing water into the reactor, and dumping the catalyst from the reactor, wherein the first threshold reactor temperature may be substantially greater than 200&#xb0; F. In an embodiment, the water may be introduced into the reactor via a quench gas distribution system when the reactor is at a second threshold reactor temperature not greater than 200&#xb0; F. to cool the reactor to a third threshold reactor temperature not greater than 120&#xb0; F.

Growing community of inventors

Draper, UT, United States of America

Jeff Johns