Cold blow system for batch production of pulp
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United States of America Patent
Stats
-
Dec 4, 1990
Grant Date -
N/A
app pub date -
Dec 6, 1988
filing date -
Dec 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and system for cooling pulp discharged from a batch type digester and recovering heat from it. A stream of pulp together with spent cooking liquor is discharged from a batch digester to a diffuser and passed through the diffuser at substantially the same pressure as that of the digester. The pulp stream is caused to flow between screens and hot spent cooking liquor is displaced with cooler liquor flowing across the pulp stream thereby lowering the temperature of the pulp stream. The displayed cooking liquor and the pulp is withdrawn from the diffuser.
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