Process for coking high-boiling aromatic hydrocarbon mixtures to form carbon materials having constant properties

US4444650A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Herbert Glaser · Gladbeck, DE
• Karl-Heinz Koch · Castrop-Rauxel, DE
• Rolf Marrett · Castrop-Rauxel, DE
• Manfred Meinbreckse · Friedrichsdorf, DE

Key dates

• Filing date: Sep 4, 1981
• Grant date: Apr 24, 1984
• Expiry date: Sep 4, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10B55/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a continuous or discontinuous process for coking high-boiling aromatic hydrocarbons to form high grade carbon products having only a narrow range of variation of physical and chemical properties. High-boiling aromatic hydrocarbon mixtures are coked in thin layers according to a defined temperature/time program, and the functional relationship between layer thickness and optimum coking time, which applies to that program for the particular hydrocarbon mixture used, is determined by means of a simple preliminary experiment. A small quantity of the hydrocarbon mixture used is coked on a microscope hot stage under standardized conditions to determine the minimum coking temperature, the time to the final coking temperature and the dependence of coking time on the layer thickness.