Method and arrangement for adding treatment liquors to cellulose raw material in a continuous process using down flow vessels
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United States of America Patent
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Aug 12, 2014
Grant Date -
Aug 30, 2012
app pub date -
Aug 19, 2009
filing date -
Aug 19, 2009
priority date (Note) -
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Abstract
The method and arrangement is for adding treatment liquor to comminuted cellulose material, preferably wood chips, during the manufacture of chemical pulp in a continuous process. The process uses a down-flow vessel where chips are descending down the vessel in a plug-flow and where treated chips are continuously fed out at the bottom of the vessel. By arranging more than two parallel pipes offset from the center of the vessel a better distribution of treatment liquor is obtained. Any disturbance of the chip plug flow descending down the vessel is reduced to a minimum.
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