Method and apparatus for torrefaction of biomass with a cyclonic bed reactor
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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Abstract
A method for the torrefaction of biomass comprises receiving biomass having a given moisture content. The biomass is heated in a generally inert environment by indirect contact. The biomass is subsequently torrefied by exposing the biomass to a flow of combustion gases in the generally inert environment. The biomass is outlet with a reduced moisture content.
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Citations
20 Claims
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1. A method for the torrefaction of biomass comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for the torrefaction of biomass comprising:
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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 directly exposing the biomass to a flow of combustion gases received from at least one pipe extending 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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Specification