Low temperature carbonization process for coal hydrogenation residues

US4584060A · kind A · utility

Assignee

• Veba Oel Entwicklungs-Gesellschaft mbH · DE

Inventors

• Lothar Winckler · Gladbeck, DE
• Klaus-Dieter Fuhrmann · Dorsten, DE
• Ulrich Graeser · Haltern, DE
• Peter Wenning · Train, DE

Key dates

• Filing date: Oct 15, 1984
• Grant date: Apr 22, 1986
• Expiry date: Oct 15, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10B7/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method for low temperature carbonization of coal hydrogenation residues, wherein a coal hydrogenation residue is subjected to a reduced pressure distillation in a one-shaft or multishaft screw extruder, liberated gases and vapors are drawn off, and non-volatilized remaining material is subjected to low temperature carbonization in a screw extruder.