Exxonmobil Research and Engineering Company

Exxon Research and Engineering Company

Robert Charles Welch

Mark Alan Greaney

Bruce R Cook

Thomas R Halbert

Garland B Brignac

William Edward Winter

Ramesh Varadaraj

Shun Chong Fung

Daniel Paul Leta

Ian A Cody

Teh Chung Ho

Limin Song

Gordon Frederick Stuntz

Cornelius Hendrick Brons

Leo D Brown

Amar S Wanni

Richard A Demmin

John P Greeley

Christopher P Eppig

Craig McKnight

James Edward Feather

Richard Harry Ernst

Douglas Wayne Hissong

John G Matragrano

Jasmina Poturovic

William E Winter

Brij N Gupta

John C Coker

Charles Alfred Euker, Jr

William Edward Winter, Jr

Richard Alan Demmin

Charles Alfred Euker

John Calvin Coker

Brijenda N Gupta

Thomas Risher Halbert

Bruce Randall Cook

Garland Barry Brignac

Targeted application of anti-fouling mechanisms in a heat exchange system produces higher rates of energy recovery. The anti-fouling mechanisms with high mitigation rates can be deployed at only the hottest portions of a pre-heat train that experience the highest rates of fouling and heat loss. In application, bundles of corrosion resistant smoothed tubes are deployed in the late pre-heat train to significantly reduce the formation of harder deposits. Vibration can be used as an adjunct approach in conjunction with the corrosion resistant, smooth tubes, or deployed alone on existing bundles. The use of high performing, more durable exchangers in select locations justifies the increased cost of these components.

Crude oil pre-heat train with improved heat transfer

A method for upgrading heavy oils by contacting the heavy oil with an inhibitor additive and then thermally treating the inhibitor additized heavy oil. The invention also relates to the upgraded product from the inhibitor enhanced thermal treatment process.

Inhibitor enhanced thermal upgrading of heavy oils

A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss of octane. The reduced sulfur naphtha stream contains mercaptan sulfur reversion products that are removed preferably by use of an aqueous base solution containing a catalytically effective amount of a phase transfer catalyst.

Selective hydroprocessing and mercaptan removal

A process for the selective hydrodesulfurization of olefinic naphtha streams containing a substantial amount of organically bound sulfur and olefins. The olefinic naphtha stream is selectively hydrodesulfurized in a first sulfur removal stage and resulting product stream, which contains hydrogen sulfide and organosulfur is fractionated at a temperature to produce a light fraction containing less than about 100 wppm organically bound sulfur and a heavy fraction containing greater than about 100 wppm organically bound sulfur. The light fraction is stripped of at least a portion ofits hydrogen sulfide and can be collected or passed to gasoline blending. The heavy fraction is passed to a second sulfur removal stage wherein at least a portion of any remaining organically bound sulfur is removed.

Multi-stage hydrodesulfurization of cracked naphtha streams with interstage fractionation

A process for reducing the amount of mercaptan sulfur in a petroleum stream without significantly changing its octane value. The process comprising a three-phase system wherein the petroleum stream to be treated is passed through a fixed bed of catalyst in the presence of a stripping gas. The stripping gas can be either hydrogen containing gas or an method wherein the composition of the catalyst utilized varies according to the stripping gas.

Catalytic stripping for mercaptan removal (ECB-0004)

The invention relates to Fluid Catalytic Cracking (FCC) for producing liquid fuels and light olefins from liquid hydrocarbon mixtures such as petroleum fractions.

Fluid catalytic cracking process for converting hydrocarbon mixtures

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Baton Rouge, LA, United States of America

Robert Charles Welch