Uop Lcc

David M Kazell

Larry D Richardson

Paul Alvin Sechrist

Paul R Cottrell

Michael Jerome Vetter

Mary Jo Wier

Frank T Micklich

Roger R Lawrence

Charles T Ressl

Gary A Dziabis

Kyle P Austin

James A Szczurek

A reactor and regeneration for effecting radial flow contact of a reactant stream with catalyst particles movable as an annular-form bed by gravity flow and for reducing stresses in the bed is disclosed.

Reaction and regeneration system

A controlled method of changing the transport rate of particles between two zones is disclosed. Changes are made in a computed value of the pressure difference of the conduit between the two zones through which the particles are transported. The changes are of a predetermined magnitude and are performed at predetermined time intervals, until the desired final value of the pressure difference is reached. The method minimizes fluctuations in the pressures of the two zones without over-sized vessels or additional equipment that would otherwise be needed to accommodate pressure changes. This results in a savings in construction costs. This invention is adaptable to a multitude of processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated.

Method for changing particulate transport rates between zones

Growing community of inventors

Libertyville, IL, United States of America

David M Kazell