Process for the purification of undistillable solid-containing hydrocarbon fractions produced in coal-refining

US4257870A · kind A · utility

Assignee

• Saarbergwerke Aktiengesellschaft · DE

Inventors

• Sigurd Jorzyk · Riegelsberg, DE
• Helmut Wurfel · Blieskastel, DE

Key dates

• Filing date: Dec 7, 1979
• Grant date: Mar 24, 1981
• Expiry date: Dec 7, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G1/045
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Solids are removed from solids-containing undistillable or difficultly distillable liquid hydrocarbon fractions by cooling, solidifying and pulverizing the solids-containing fractions, by contacting the pulverized material with solvent and by separating the solids, then the solvent, resulting in relatively solids-free hydrocarbon fractions.