SYSTEM FOR THE TORREFACTION OF LIGNOCELLULOSIC MATERIAL
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Jun 28, 2012
filing date -
Jun 28, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A pressurized torrefaction reactor vessel including: a rotatable shaft extending vertically down from a top of the vessel; scraper devices each at a different elevation within the vessel and mounted to the shaft; a tray associated with each one of the scraper devices such that the scraper device is immediately above a tray of the tray assembly; wherein the tray is an open mesh and impermeable to passage of biomass through the tray; each tray includes a discharge opening to transfer biomass from the tray and down to a tray of a lower one of the tray assemblies, and wherein the discharge opening in the lowermost tray assembly transfers the biomass to a pile of the biomass in the vessel, and a bottom discharge port of the vessel through which the torrefied biomass is discharged.
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