Process for obtaining wax fractions from a feed wax

US10689588B2 · kind B2 · utility

Assignee

• SASOL WAX GMBH · DE

Inventors

• Gernot Meyer · Hamburg, DE
• Ingo Behrmann · Hamburg, DE

Key dates

• Filing date: Jun 23, 2016
• Grant date: Jun 23, 2020
• Expiry date: Jun 23, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2300/1085
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for obtaining a wax fraction from a feed wax, the process comprising: (a) providing a molten feed wax in a container; (b) solidifying the feed wax by cooling; (c) increasing the temperature of the feed wax to a temperature at which a first fraction of the feed wax melts, said first fraction having a congealing point which is lower than the congealing point of the feed wax; (d) recovering the first fraction of the feed wax; (e) increasing the temperature of the remaining feed wax to a temperature at which a further fraction of the feed wax melts; and (f) recovering the further fraction of the feed wax. The feed wax comprises at least 75 wt.-% of linear alkanes and each recovered fraction comprises at least 19 wt.-% of the feed wax.