Process for production of activated carbon from lignite coke

US4603119A · kind A · utility

Inventors

• Alfons Karl · Hanau, DE
• Erwin Walter · Hörstein, DE
• Peter Kleinschmit · Hanau, DE
• Hermann Gottschlich · Brilon, DE
• Roland Kutz · Bielefeld, DE
• Detlev Koth · Bocholt, DE

Key dates

• Filing date: May 9, 1985
• Grant date: Jul 29, 1986
• Expiry date: May 9, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B32/336
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Activated carbon is produced from lignite coke. It is characterized by the product of the molasses number times the iodine number divided by 1000 being 350 to 1000 and/or the product of the molasses number times the methylene blue number divided by 10 being 500 to 1200. It is produced by adding aqueous alkali or alkaline earth carbonate solution and/or aqueous alkali or alkaline earth hydroxide solution by means of lance during the steam activation of lignite coke in a rotating tube.