Method and apparatus for biomass torrefaction using conduction heating
OwnerJohn A. Paoluccioinventor
Life of this patent
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Abstract
A method for torrefaction of wood which includes providing a first endless conveyor belt; heating the first endless belt; and positioning a planar wood product on the first belt to heat the wood product by conduction to achieve torrefaction. Other forms provide a second endless belt that disposed in sandwich relation to wood to be torrefied. Some embodiments of the method provide a metal chamber having opposed planar sides dimensioned and configured for receiving a wood sheet with the respective opposed sides of the wood sheet in intimate thermal contact with respective opposed sides of the metal chamber. Other embodiments include the apparatus for torrefaction of an associated wood sheet.
Claims22
A method for torrefaction of wood which comprises:
- providing a first endless conveyor belt and apparatus for mounting the first endless belt on respective rollers;
- heating the first endless belt;
- and
- positioning a planar wood product on the first belt to heat the wood product by conduction to achieve torrefaction.
A method for torrefaction of wood which comprises:
- providing a wood sheet having opposed generally planar substantially parallel opposed sides;
- providing a metal chamber having opposed planar sides dimensioned and configured for receiving the wood sheet with the respective opposed sides of the wood sheet in intimate thermal contact heat transfer relationship with respective opposed sides of the metal chamber when the wood is placed in the metal chamber;
- positioning the wood sheet within the metal chamber with intimate thermal contact between the planar sides of the wood sheet and the respective opposed planar sides of the metal container;
- immersing the metal chamber in a heat exchange liquid:
- and
- heating the wood by conduction heat transfer between the metal chamber and the wood sheet to a temperature of at least 400° F.
Dependencies are inferred from the claim text.