Two vessel reactor system and method for hydrolysis and digestion of wood chips with chemical enhanced wash method
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United States of America Patent
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Nov 24, 2015
Grant Date -
Sep 4, 2014
app pub date -
May 15, 2014
filing date -
May 23, 2007
priority date (Note) -
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Abstract
A reactor vessel system including: a first reactor vessel having a hydrolysate and liquid extraction screen, a first region above the extraction screen that is maintained at conditions promoting a hydrolysis reaction in the cellulosic material, a second region below the extraction screen in which the hydrolysis is substantially suppressed and a wash liquid inlet below the extraction screen providing wash liquid at a temperature below a hydrolysis temperature; a transport pipe having an inlet coupled to the first reactor vessel and an outlet coupled to a second reactor vessel, and the second reactor vessel includes a liquid discharge that extracts a portion of liquid from the second reactor vessel and directs the portion of liquid to the first reactor vessel or to the transport pipe.
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