Continuous digester having a sectioned top separator with multiple liquor extraction ports
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United States of America Patent
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app pub date -
May 21, 2003
filing date -
May 13, 2002
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Abandoned
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Abstract
A method is disclosed for extracting liquor from a cellulose slurry for a continuous digester comprising the steps of: providing the cellulose slurry of liquor and chips of cellulose fiber material to a separator; extracting a first stream of liquor from the separator; extracting a second stream of liquor from the separator, where the second stream has an effective alkali (EA) concentration greater than the EA concentration of the first steam; outputting the first stream from the separator and outputting the second stream from the separator separately from the second stream, and outputting a condensed slurry from the separator to a digester vessel.
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