Sasol Technology (pty) Limited

Sasol Technology Proprietary Limited

Edward Ludovicus Koper

Trevor David Phillips

Francois Jacobus Du Toit

Janette Van Der Walt

Luis P F Dancuart Kohler

Gert Hendrik Du Plessis

Luis Pablo Fidel Dancuart Kohler

Gert H Du Plessis

Johan Pieter De Wet

Paul Jacobson

Wilhelmina Jansen

Ivan Philip Greager

Mieke Ann Desmet

Jan Hendrik Scholtz

This invention relates to a process for producing linear alkyl benzene and linear paraffins, the process including the steps of obtaining a hydrocarbon condensate containing olefins, paraffins and oxygenates from a low temperature Fischer-Tropsch reaction; a) fractionating a desired carbon number distribution from the hydrocarbon condensate to form a fractionated hydrocarbon condensate stream; b) extracting oxygenates from the fractionated hydrocarbon condensate stream from step a) to form a stream containing olefins and paraffins; c) alkylating the stream containing olefins and paraffins from step b) with benzene in the presence of a suitable alkylation catalyst; and d) recovering linear alkyl benzene and linear paraffin.

Production of linear alkyl benzene

A process for the production of highly purified waterfrom Fischer-Tropsch reaction waterincludes distillationas a primary treatment stage, biological treatment including anaerobic digestionand aerobic digestionas a secondary treatment stage, solid-liquid separationas a tertiary treatment stage and a dissolved salt and organic removal stageas final treatment stage.

Method of purifying fischer-tropsch derived water

A process for the production of highly purified water from Fischer-Tropsch reaction water includes distillation as a primary treatment stage, evaporation as a secondary treatment stage, aerobic treatment as a tertiary treatment stage, solid-liquid separation as a quartic treatment stage, and membrane separation as a final treatment stage.

Method of purifying Fischer-Tropsch derived water

A process for the production of highly purified waterfrom Fischer-Tropsch reaction water, includes at least the steps of a primary treatment stage comprising an equilibrium staged separation processhaving at least one stage for removing at least a fraction of non-acid oxygenated hydrocarbons from the Fischer-Tropsch reaction waterto produce a primary water-enriched stream, a secondary treatment stage comprising at least one membrane separation processfor removing at least some suspended solids and acidic oxygenated hydrocarbons from at least a portion of the primary water-enriched streamto produce a secondary water-enriched streamand a tertiary treatment stage comprising a dissolved salt and organic removal stagefor removing at least some dissolved salts and organic constituents from at least a portion of the secondary water-enriched stream

A process for the production of purified water from Fischer-Tropsch reaction water wherein the purified water is an aqueous stream having a COD of between 20 and 500 mg/l, a pH of between 6.0 and 9.0, a suspended solids content of less than 250 mg/l and a total dissolved solids content of less than 600 mg/l, and wherein the process includes at least the steps of a primary treatment stage comprising an equilibrium staged separation process having at least one stage for removing at least a fraction of non-acid oxygenated hydrocarbons from the Fischer-Tropsch reaction water to produce a primary water enriched stream, a secondary treatment stage comprising liquid-liquid extraction for removing at least a fraction of organic acids from at least a portion of the primary water enriched stream to produce a secondary water enriched stream, a tertiary treatment stage comprising biological treatment for removing at least a fraction of acidic oxygenated hydrocarbons from at least a portion of the secondary water enriched stream to produce a tertiary water enriched stream and a quartic treatment stage comprising solid-liquid separation for removing at least some solids from at least a portion of the tertiary water enriched stream.

A process for the production of highly purified water from Fischer-Tropsch reaction water, which process includes at least the steps of a primary treatment stage comprising biological treatment for removing at least a fraction of dissolved organic carbon from the Fischer-Tropsch reaction water to produce a primary water-enriched stream, a secondary treatment stage comprising solid-liquid separation for removing at least some solids from at least a portion of the primary water-enriched stream to produce a secondary water-enriched stream, and a tertiary treatment stage comprising a dissolved salt and organic removal step for removing at least some dissolved salts and organic constituents from at least a portion of the secondary water-enriched stream.

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Secunda, South Africa

Edward Ludovicus Koper