Method of purifying fischer-tropsch derived water

US7166219B2 · kind B2 · utility

Assignee

• SASOL TECHNOLOGY (PTY.) LIMITED · ZA

Inventors

• Luis Pablo Fidel Dancuart Kohler · Sasolburg, ZA
• Gert Hendrik Du Plessis · Secunda, ZA
• Francois Jacobus Du Toit · Sasolburg, ZA
• Edward Ludovicus Koper · Secunda, ZA
• Trevor David Phillips · Vanderbijlpark, ZA
• Janette Van Der Walt · Sasolburg, ZA

Key dates

• Filing date: Dec 16, 2004
• Grant date: Jan 23, 2007
• Expiry date: Jun 12, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2101/34
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A process for the production of highly purified water 44 from Fischer-Tropsch reaction water 12 includes distillation 14 as a primary treatment stage, biological treatment including anaerobic digestion 20 and aerobic digestion 22 as a secondary treatment stage, solid-liquid separation 32 as a tertiary treatment stage and a dissolved salt and organic removal stage 40 as final treatment stage.