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US 2011/0252698 A1Published application
Method of Drying Biomass
AssigneeRiver Basin Energy, Inc.
InventorsClinton B. Camper, Vijay Sethi
Life of this patent
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Abstract
A process for torrefaction of biomass is provided in which biomass are passed into a fluidized bed reactor and heated to a predetermined temperature in an oxidizing environment. The dried biomass is then fed to a cooler where the temperature of the product is reduced to approximately 100 degrees Fahrenheit.
Claims20
A single stage process for biomass torrefaction, comprising:
- charging biomass to a fluidized bed reactor, charging air to said fluidized bed reactor at a velocity of from about 4 to about 8 feet per second, subjecting said biomass to a temperature of from about 230 to about 350 degrees Centigrade, and removing the water from said biomass by torrefying said biomass, wherein:
- said biomass charged to said fluidized bed reactor has an average moisture content of from about 10 to about 50 percent,
- said fluidized bed reactor is comprised of a fluidized bed with a fluidized bed density of from about 20 to about 50 pounds per cubic foot, whereby a dried, torrefied biomass is produced.
A process for drying a material, comprising:
- directing the material to a fluidized bed reactor;
- predrying the material with gasses exhausted from the fluidized bed reactor;
- and
- subjecting said material within the fluid bed reactor to a temperature sufficient to torrefy the material and remove water therefrom.
1 more element
Dependencies are inferred from the claim text.