Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

David Jon Brosten

Ye-Mon Chen

Ye Mon Chen

Benjamin Karl Bussey

James W Nielson, Jr

Reactor vessel and a feed nozzle assembly for feeding a gas and a liquid into such reactor vessel. The feed nozzle assembly comprises an outer tube supplying a first liquid feed, such as oil, an inner tube supplying a dispersion gas, such as steam, a third tube supplying a second liquid feed, such as biomass, and a nozzle end. A catalytic cracking process wherein two or more hydrocarbon liquids are jointly dispersed into a dispersion gas and jetted via the same feed nozzle assembly into a catalytic cracking reactor.

Feed nozzle assembly for a catalytic cracking reactor

A feed nozzle assembly for co-currently introducing gas and liquid into a reactor vessel which feed nozzle assembly comprises (a) an inner tube defining a gas conduit and an outer tube arranged around the inner tube, wherein the outer surface of the inner tube and the inner surface of the outer tube define an annular liquid conduit, and wherein each of the tubes have an inlet end and an opposite outlet end; (b) a first nozzle attached to the outlet end of the inner tube; (c) a second nozzle attached to the outlet end of the outer tube and arranged downstream of the first nozzle, wherein the inner tube contains purging orifices.

Feed nozzle assembly

Disclosed is an improved regeneration process and system for the regeneration of a spent FCC catalyst in a regenerator without vertical partitions by introducing different fluidization gas streams to different regions of a dense phase catalyst zone at the lower end of the regenerator such as a high velocity central region and a low velocity annular zone are formed, positioned below a common dilute catalyst phase.

Process and apparatus for the regeneration of spent FCC catalyst

In a fluid catalytic cracking (FCC) unit, a regenerator or a stripper includes a standpipe for circulating catalyst from one vessel to another, the standpipe having an inlet design which reduces gas entrainment during catalyst transport by partial de-fluidization in the standpipe inlet region. The standpipe inlet design could include multiple inlet openings through the top of the standpipe or from the side wall by means of slots, or both, and a horizontal disk surrounding the standpipe below the slots for blocking the upward flow of bubbles, the combination thereby forming a dense fluidization zone above the disk and surrounding the inlet, including the slots. Additionally, the disk may include a downwardly-projecting lip or edge forming an inverted void space around the standpipe and the downwardly-projecting edge may further include vent holes around its circumference which allow bubbles trapped under the disk to be vented outside the standpipe inlet region. Above and below the disk and surrounding the standpipe, gas injection rings may be used to prevent the dense fluidization zone above the disk from complete de-fluidization, thus assisting the catalyst to remain fluidized and flow smoothly into the standpipe either through the slots or at the very top of the open standpipe, or both.

Standpipe inlet enhancing particulate solids circulation for petrochemical and other processes

A feed nozzle for introducing steam and a heavy petroleum hydrocarbon into a reactor, including a nozzle body having a cylindrical inner steam conduit; and having a annular outer heavy petroleum hydrocarbon conduit, a first nozzle tip fixedly attached to the outlet end of the inner steam conduit, for the passage of the steam out of the inner steam conduit and into the heavy petroleum hydrocarbon, resulting in a mixture of steam and heavy petroleum hydrocarbon; the hemi-spherical outlet end having a row comprising a plurality of holes therein for the passage of the steam out of the inner steam conduit and into the heavy petroleum hydrocarbon passing through the outer heavy petroleum hydrocarbon conduit, resulting in a mixture of steam and heavy petroleum hydrocarbon; a second nozzle tip fixedly attached to the outer heavy petroleum hydrocarbon conduit, for passage of the mixture of steam and heavy petroleum hydrocarbon out of the feed nozzle assembly; the second nozzle tip being adapted to atomize the mixture of steam and heavy petroleum hydrocarbon, the second nozzle tip having a hemi-spherical outlet end, for passage of the mixture of steam and heavy petroleum hydrocarbon out of the feed nozzle assembly; wherein the hemi-spherical outlet end of the second nozzle tip extends beyond the hemi-spherical outlet end of the first nozzle tip, the hemi-spherical outlet end of the second nozzle tip having an elongated slit for passage of the mixture of steam and heavy petroleum hydrocarbon out of the feed nozzle assembly.

Growing community of inventors

Anacortes, WA, United States of America

David Jon Brosten