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THERMOCHEMICAL CONVERSION OF BIOMASS 1 - Coggle Diagram
THERMOCHEMICAL CONVERSION OF BIOMASS 1
COMBUSTION
Exothermic chemical reaction
Burn in the presence of air
Methods
Moving bed
Fluidized bed
Rotary hearth furnace
Burner
Fixed bed
Applications
Heat
Energy (power generation)
GASIFICATION
Product: Gaseous fuels
T= 450-900°C
Heated in oxygen limited atmosphere
PYROLYSIS
Heating in the absence of air
T= 300-500°C
Products: Bio-oil, Charcoal, Biogas
Similar to Liquefaction (bio-oil production)
Low T
High P
TORREFACTION
Slow heating
Inert atmosphere
Max T= 300°C
Improve properties of biomass fuel
Lower moisture content
Lower volume
Higher heat values
Uniform solid product
TYPES
Dry torrefaction
Mild Pyrolysis
Wet torrefaction
Hydrothermal carbonazation (HTC)