Exxonmobil Research and Engineering Company

W Berlin Genetti

Paul Joseph Berlowitz

Daniel Francis Ryan

Robert J Wittenbrink

Jack Wayne Johnson

L L Ansell

A process for the production of a winter diesel fuel from wax containing hydrocarbons produced by the Fischer-Tropsch hydrocarbon synthesis process. A 300&deg; F.&plus; Fischer-Tropsch fraction is upgraded first by hydroisomerization followed by catalytic dewaxing resulting in a diesel fuel suitable for use as a winter diesel fuel having excellent cold flow properties and reduced emissions.

Winter diesel fuel production from a fischer-tropsch wax

The invention is a process for producing a mixture of Fischer-Tropsch product that is solid at ambient conditions (between 32&deg; F. and 95&deg; F.), such as wax, and hydrocarbon liquid, such as naphtha, that can be pumped at ambient temperature (between 32&deg; F. and 95&deg; F.). The temperature of the mixture is controlled below the melting point of the Fischer-Tropsch product. The present invention provides for the transport of Fischer-Tropsch product from a remote location in a readily available medium, such as naphtha, via pipeline, tanker or railcar. At the completion of the transport, the hydrocarbon liquid and Fischer-Tropsch product are separated by conventional methods such as flashing, distillation, or filtration with minimal contamination from the hydrocarbon liquid.

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Baton Rouge, LA, United States of America

W Berlin Genetti