Method and arrangement for improving a washing step after completed cooking in a continuous digester
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United States of America Patent
Stats
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Feb 5, 2013
Grant Date -
Sep 27, 2012
app pub date -
Dec 20, 2010
filing date -
Dec 23, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The method and an arrangement are for the improvement of a wash after completed digestion in a continuous digester for the production of cellulose pulp. The softened chips are exposed to a radially directed displacement wash after they have passed the rotating bottom scraper. The displacement wash has been established in the flow of digested softened chips through the outlet tap before the softened chips are defibrated by the fall in pressure across the blow-valve that is arranged after the digester.
First Claim
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