Uop Lcc

Roger L Throndson

William J Koves

Paolo Palmas

Lev Davydov

Kenneth David Peters

Mohammad-Reza Mostofi-Ashtiani

Richard A Johnson, Ii

Arthur R Greenwood

Sujay R Krishnamurthy

Jeffrey E Burgard

James W Althoff

A process and apparatus of a gas-solids separator are provided in which a cap is disposed across an upstream end of swirl blades in a cyclonic separator to protect the blades from erosion by fast traveling solids.

Apparatus and process for gas-solids separation

A process and apparatus described is for distributing hydrocarbon feed to catalyst in a riser. Hydrocarbon feed is delivered to a plenum in the riser. Nozzles from the plenum inject feed into the riser to contact the catalyst. Streams of regenerated catalyst and carbonized catalyst may be passed to the riser and mixed around an insert in a lower section of a riser. The plenum may be located in the riser.

Process and apparatus for distributing hydrocarbon feed to a catalyst stream

A fluid solid-contacting device eliminates the accumulation of deposits behind distribution collection conduits, reduces the differential expansion between the conduits and a containment vessel, and improves fluid distribution by extending the perforations into a back side of a distribution conduit that abuts the vessel. This apparatus has greatest application to scallop-shaped conduits that are commonly used in radial flow reactors. The perforations, extended into the back side of the scallop, ventilate the area between the scallop and the vessel holding the scallops.

Radial flow reactor with double perforated scallops

Void blowing by gas flow through a bed of particulate material is avoided by the use of a cover plate that eliminates void spaces at the top of the bed and a vertical duct that allows a head of particulate material to be maintained above the cover plate. The particle bed is arranged in the usual fashion using inner and outer screens to hold particulate material in a vertically extended bed into which particulate material is intermittently added and withdrawn. The top of the particulate bed is contacted by an imperforate cover plate that is sloped up to an inlet opening that has a smaller cross-sectional area than the area of the bed. The cover plate has a slope which is greater than the angle of the repose of the particles so that particles filling the top section of the bed will be free of void spaces. The cover plate also has a relatively small inlet opening so that a small volume of catalyst particles can provide a head of particles above the inlet opening to resist upward pressure that otherwise forms voids at the inlet screen surface. This cover plate arrangement also minimizes bed heights and overall reactor height necessary to provide the head of particles for resisting upward pressure.

Moving bed radial flow reactor for high gas flow

An improved multiple stage reactor system for effecting radial flow contact of a reactant stream with catalyst particles movable as an annular-form bed through said system by gravity flow. The improved multiple stage reactor system may be advantageously employed in the catalytic conversion of hydrocarbons and in particular in the catalytic reforming of a naphtha boiling range charge stock.

Growing community of inventors

Schaumburg, IL, United States of America

Roger L Throndson