Process for the production of reformer feed and heating oil or diesel oil from coal by liquid-phase hydrogenation and subsequent gas-phase hydrogenation

US4639310A · kind A · utility

Assignee

• Veba Oel Entwicklungs-Gesellschaft mbH · DE

Inventors

• Werner Dohler · Marl, DE
• Ludwig Merz · Recklinghausen, DE
• Heinz Frohnert · Bottrop, DE
• Bernd Uckermann · Dortmund, DE
• Ulrich Graeser · Haltern, DE
• Alfons Jankowski · Essen, DE
• Eckard Wolowski · Mülheim, DE
• Hans-Friedrich Tamm · Recklinghausen, DE
• Norbert Wilczok · Wiesloch, DE

Key dates

• Filing date: Aug 2, 1985
• Grant date: Jan 27, 1987
• Expiry date: Aug 2, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B3/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of reformer feed and heating or diesel oil from coal which comprises introducing a pulverized coal-oil slurry together with a hydrogenation gas into a liquid-phase hydrogenation stage; remoping solids-containing residue from the discharge from the liquid phase hydrogenation stage, cooling the resulting residue-free volatile coal-oil fraction from the discharge and, if necessary, removing a slurry oil fraction therefrom before feeding the volatile coal-oil fraction to a gas-phase hydrogenation stage; introducing fresh hydrogen which is substantially free of contaminants into the gas-phase hydrogenation stage together with the volatile coal-oil fraction, the fresh hydrogen introduced into the gas-phase hydrogenation stage constituting the entire amount of hydrogen required for the process; and utilizing the waste-gas from the gas-phase hydrogenation as the hydrogenation gas for the liquid-phase hydrogenation. By contrast with conventional processes, which during gas-phase hydrogenation requires operating partial pressures of 300 bars, the process of this invention makes possible the lowering of the operating pressures required during gas-phase hydrogenati…