Method for converting a digester for use as a gas phase and hydraulic phase continuous digester
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United States of America Patent
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Feb 9, 2010
Grant Date -
Jul 5, 2007
app pub date -
Mar 19, 2007
filing date -
May 12, 2003
priority date (Note) -
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Abstract
A method for converting a vapor phase continuous digester to a hydraulic digester including the steps of: operating the vapor phase digester in a vapor phase mode wherein a chip slurry enters the vessel of the digester through a lower chip inlet port, moves up through a top separator, discharges from an upper chip discharge chute of the separator to an upper vapor region of the vessel and falls to a liquor filled region of the vessel; ceasing the flow of the chip slurry to the separator; establishing a chip slurry flow path to an upper portion of top separator, and filling the vessel with liquor and chips such that the chip discharge chute is immersed in liquor.
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