Acetocell Gmbh & Co. Kg

Wim Janssen

Wolfdieter Klein

Alex Berg

Stefan Balle

Rudolf G Kunz, Deceased

In a three-stage process for the delignification of cellulose-containing raw materials, pulping is initially performed with a solution of concentrated aqueous acetic acid at an elevated temperature and under an elevated pressure. The resultant acetic acid-moist pulp is treated in a second stage with the aforementioned pulping solution with the addition of nitric acid and is then washed or extracted with water or with the pulping solution. In a third treatment stage, the thus-obtained acetic acid-moist pulp is treated with an ozone-containing gas.

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Murrhardt, Germany

Wim Janssen