The Petroleum Oil and Gas Corporation of South Africa (Pty) Ltd.

Petroleum Oil and Gas Corporation of South Africa, Ltd.

The Petroleum Oil and Gas Corporation of South Afr.

Cyril David Knottenbelt

Carl Dunlop

Maxwell Paul Thomas

Stewart Hlohloza

Petrus Johannes Hoffmann

Leon Walliser

Kholekile Zono

Patrick Otto Taylor

Johan Stander

Volan Richard Nicholson

Lehlohonolo Aubrey Motsekoa

Vernon Jeremay Adams

Maxwell Thomas

This invention relates to alternative diesel fuels with improved cold flow properties. The alternative fuel may be a biodiesel which typically comprises fatty acid methyl or ethyl esters; or a diesel fuel blend including diesel fuel derived from a Fischer-Tropsch (FT) reaction and possibly comprising or containing crude-derived diesel fuel and biodiesel. The cold flow properties are improved by adding a higher alcohol component which is not a naturally occurring component of the biodiesel, nor the diesel fuel.

Biodiesel fuels

The invention provides synthetically derived distillate kerosene produced by catalytic conversion of Fisher-Tropsch derived light olefins to distillates (COD) and hydrotreating thereof. The kerosene boils in the range of about 170 to 250&#xb0; C. and includes less than 10% n-paraffins, more than 75% iso-paraffins and less than 1% aromatics.

Synthetically derived illuminating and heating paraffin oil

This invention relates to a process for the removal of catalyst particles from a hydrocarbon stream () derived from the reaction of synthesis gas () with a particulate Fischer Tropsch catalyst in a Fischer Tropsch reactor (). The process includes a primary separation step () which makes use of a filter, wherein the filter has a pore size which is 70% to 95 of the average size of the particles of the Fischer Tropsch catalyst, thereby forming a primary filtered hydrocarbon stream () containing fine catalyst particles. The benefit of this selection of filter pore size is that it mitigates fines build-up on the filter of the primary separator. The primary filtered hydrocarbon stream () is then passed to a secondary separation step in a cross-flow filtration unit () which removes fine catalyst particles from the primary filtered hydrocarbon stream to provide a retenate () containing the catalyst fines, and permeate () containing a hydrocarbon product.

Removal of ultra-fine particles from a Fischer Tropsch stream

The invention provides a low aromatic producing process for catalytical conversion of Fisher-Tropsch derived olefins to distillates (COD), which process includes the step of contacting Fisher-Tropsch derived olefins with a zeolite type catalyst at pressures of more than 50 barg.

Process for catalytic conversion of Fischer-Tropsch derived olefins to distillates

This invention relates to a method for reducing the toxicity of a mixture of hydrocarbons by means of fractional distillation, a distillate having a reduced toxicity and a composition including the distillate.

Process for reducing the toxicity of hydrocarbons

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Mossel Bay, South Africa

Cyril David Knottenbelt