Method for drying lumber, method of impregnating lumber with chemicals, and drying apparatus
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United States of America Patent
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Jan 17, 2012
Grant Date -
Jul 31, 2008
app pub date -
Dec 17, 2007
filing date -
Jan 26, 2007
priority date (Note) -
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Abstract
A method for drying lumber in a short time with less use of energy. The method of drying lumber includes: enclosing lumber in a batch container having a pressure release valve; filling fluid into the batch container under pressure; maintaining a temperature and a pressure at or above a critical point of the fluid for a certain period of time; and then opening the pressure release valve of the batch container to reduce the internal pressure to atmospheric pressure.
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