Chevron U.s.a. Inc.

David Michael Bosi

Darush Farshid

Jeff Johns

David Walter Reeves

Steven Alden Souers

David Lawrence Cooke

Michael K Porter

Douglas Gayle McDaniel

Goutam Biswas

Lucy Wu

James Knight

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.

Method for safely and quickly shutting down and cleaning a hydroprocessing reactor of spent catalyst via a water flooding technique

The present disclosure provides a system and method for responding to an unintended increase in pressure within a high pressure processing system. The system and method of the present disclosure provides a pressure relief system that releases pressure reliably even if the material under pressure is of mixed phase. In addition, the system and method for releasing pressure avoids the need for complex subsystems to contain and process materials that escape the system during the pressure release process.

Pressure relief in high pressure processing system

An insulated transition spool apparatus for mounting unheading devices to pressure vessels, such as coker vessels, and enabling repetitive operation thereof is disclosed. The apparatus comprises an outer housing, an inner housing that encloses an insulating space between the inner and outer housing, a side feed entry aperture in each housing and a spool adapter flange to facilitate attachment of the spool to the vessel.

Insulated transition spool apparatus

Growing community of inventors

Napa, CA, United States of America

David Michael Bosi