Method and apparatus for treating pulp
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United States of America Patent
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May 11, 2004
Grant Date -
Jul 11, 2002
app pub date -
May 15, 2001
filing date -
May 16, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method of treating chemical pulp in order to optimize 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.
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