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Method and apparatus for torrefaction of biomass with a cyclonic bed reactor

  • US 9,683,187 B2
  • Filed: 05/27/2013
  • Issued: 06/20/2017
  • Est. Priority Date: 05/25/2012
  • Status: Active Grant
First Claim
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1. A method for the torrefaction of biomass comprising:

  • receiving biomass having a given moisture content;

    heating the biomass in a generally inert environment by indirect contact, the generally inert environment being defined by a level of oxygen being below a level enabling combustion;

    subsequently torrefying the biomass by exposing the biomass to a flow of combustion gases directly from an exhaust of a burner, a combustion being controlled to adjust the level of oxygen at the exhaust of the burner below the level enabling combustion to maintain the generally inert environment; and

    outletting the biomass with a reduced moisture content.

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