Digester screen for a continuous cellulose pulp digester
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United States of America Patent
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Jan 3, 2012
Grant Date -
Nov 4, 2010
app pub date -
Nov 27, 2008
filing date -
Nov 30, 2007
priority date (Note) -
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Abstract
The digester screen is for a continuous digester in which cooked cellulose pulp is produced. The digester screen has a number of screen bars arranged vertically in the continuous digester that have withdrawal slots (S) between the fixed screen bars through which withdrawal slots cooking fluid can be withdrawn from the column of pulp (P) of the digester. By having every second screen bar fixedly arranged and recessed a distance (D) relative to the neighboring screen bar an increased withdrawal capacity for the screen is obtained.
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