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Rotary biomass dryer

  • US 8,667,706 B2
  • Filed: 08/25/2008
  • Issued: 03/11/2014
  • Est. Priority Date: 08/25/2008
  • Status: Active Grant
First Claim
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1. A method for drying a wet biomass material to reduce its moisture content, producing a substantially drier biomass material, comprising the steps of:

  • (a) supplying an input of the wet biomass material that is to be dried;

    (b) rotating a shaft to advance the wet biomass material through a housing;

    (c) frictionally heating and compressing the wet biomass material as it moves through the housing mechanical energy supplied by the rotating shaft and without requiring heating from any external heat source, so that moisture is forced from the wet biomass material and evaporated, leaving a substantially drier biomass material; and

    (d) forcing the substantially drier biomass material from the housing for subsequent use.

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