System for reception and transport of lime mud from a white liquor filter
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United States of America Patent
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May 21, 2013
Grant Date -
Jan 6, 2011
app pub date -
Dec 4, 2008
filing date -
Dec 6, 2007
priority date (Note) -
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Abstract
The system is for the reception and transport of dry lime mud from a continuously operating pressurized filter in a causticization process. A tube valve is used as an outlet from the pressurized process. The tube valve has a minimum length that is twice a diameter of the tube. A column of lime mud can be held within it as a pressure lock. The column of lime mud can be caused to descend through the tube valve by controlling a difference in pressure between an inner surface and an outer surface of the tube such that the diameter of the tube expands essentially uniformly along its length by 5-10% or by at least 4-6 millimeters.
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