METHOD AND APPARATUS FOR TREATING PULP

KAJ HENRICSON, (Inventor), JANNE VEHMAA, (Inventor), OLAVI PIKKA, (Inventor), EERO KONTTURI, (Inventor)

    Research output: Patent

    Abstract

    The present invention relates to a method of treating chemical pulp in order to op- timize the consumption of bleaching chemicals and to improve the quality of the pulp. Especially the invention relates to a method according to which filtrate obtained from a suitable stage of the washing of brown stock preferably cooked by an alkaline cooking method is treated with an oxidizing chemical prior to the oxygen stage following the brown stock washing.

    Original languageEnglish
    Patent numberCA2347454
    IPCD21C 9/ 16 A N
    Priority date16/05/2000
    Publication statusPublished - 16 Nov 2001
    MoE publication typeH1 Granted patent

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