Uop Lcc

Gary A Dziabis

Charles T Ressl

Manuela Serban

Paul R Cottrell

Michael Jerome Vetter

Mary Jo Wier

Leon Yuan

Steven Kozup

Larry D Richardson

David J Fecteau

Kyle P Austin

Rui De Menezes

David M Kazell

Alan E Cepla

Massimiliano Cantarelli

James A Szczurek

Steven C Kozup

New/fresh catalyst is added to a dehydrogenation unit and aged catalyst is removed from the dehydrogenation unit on a continuous or semi-continuous basis while the dehydrogenation unit is in operation. The conversion achieved by the higher activity catalyst results in the production rate of olefin product being maintained at near start-of-run production for longer, with a slower rate of decline. The higher activity catalyst extends run time, reduces feed consumption for each unit of olefin product, and minimizes fresh catalyst expenses.

Dehydrogenation process having improved run time

Processes for catalytic dehydrogenation of paraffin stream is disclosed. The process includes passing a first portion of the paraffin-containing feedstream through a select catalytic reactor in a plurality of catalytic reactors. An internal differential pressure is measured in the select catalytic reactor. A second portion of the paraffin-containing feed stream is bypassed around the select catalytic reactor when the measured internal differential pressure is above a predetermined limit of the internal differential pressure. The bypassed second portion is passed to at least one other catalytic reactor in the plurality of reactors located downstream of the select catalytic reactor being bypassed.

Processes for producing olefins from paraffins

A process for a continuous regeneration of a catalyst wherein the regeneration section includes at least two separate zones. The regeneration includes a combustion zone, and an oxygen boost zone, where the process utilizes at least two independent regeneration gas loops for control of the amount of oxygen to regenerate the catalyst.

Multiple burn zones with independent circulation loops

A process for reforming a hydrocarbon stream in a reforming unit can include passing a gas including a halogen-containing material from a product separation zone through an adsorption zone to remove at least some of the halogen-containing material before the gas enters a first reforming stage having at least one fixed bed reaction zone.

Process for reforming a hydrocarbon stream in a unit having fixed and moving bed reaction zones

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

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Addison, IL, United States of America

Gary A Dziabis