Distribution of dilution liquor to the discharge of a cellulose pulp digester
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United States of America Patent
Stats
-
Sep 26, 2000
Grant Date -
N/A
app pub date -
Dec 9, 1997
filing date -
Dec 9, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a pulp treatment vessel, such as a kraft pulp continuous vertical digester, a cellulose slurry is caused to flow in the vessel interior in a flow path. A substantially annular void is formed at at least one point along the flow path, and dilution or treatment liquor is introduced into the substantially annular void so that the liquor is substantially uniformly distributed about the periphery of or into the slurry. The annular void may be formed by a step out in the vessel, and the uniform introduction of dilution liquor may be accomplished utilizing one or more openings, such as a plurality of openings substantially evenly spaced around the substantially annular void, e.g. using a screen surface. The screen surface may be substantially vertical or conical.
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