Supercritical extraction and simultaneous catalytic hydrogenation of coal

US4485003A · kind A · utility

Assignee

• Fried Krupp · DE

Inventors

• Hubert Coenen · Essen, DE
• Rainer Hagen · Leverkusen, DE
• Ernst Kriegel · Essen, DE

Key dates

• Filing date: Jul 29, 1982
• Grant date: Nov 27, 1984
• Expiry date: Jul 29, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S208/952
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing liquid hydrocarbons from coal comprises treating comminuted coal at 380.degree. to 600.degree. C. and 260 to 450 bar with water in a high pressure reactor to form a charged supercritical gas phase and a coal residue. Simultaneously with the water treatment, hydrogenation with hydrogen takes place in the presence of a catalyst. The catalyst is selected from the group consisting of NaOH, KOH, Na.sub.4 SiO.sub.4, NaBO.sub.4, or KOB.sub.2. Then, the gas phase is divided into several fractions by lowering its pressure and temperature. Energy and/or gas is generated from the coal residue.