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CHAPTER 8: THERMOCHEMICAL CONVERSION OF BIOMASS III - Coggle Diagram
CHAPTER 8: THERMOCHEMICAL CONVERSION OF BIOMASS III
Pyrolysis
Characteristics
Moisture (110oC)
Hemicellulose (200-260oC)
Lignin (280-500oC)
Celllose (200-260oC)
Products
Gas
Liquid
Char
Fast pyrolysis
Produces liquids, char and gas
Rapid thermal decompostion of organic compounds in the absence of oxygen
Small particles
Short resindece times
Moderate temp: 400-500oC
Rapid quenching
Carbonization
Char
Solid
Unstable
As filtration, energy and fertilizer.
Obtained charcoal
400-600oC (temperature)
Complete absence of oxygen/air
Increase carbon up to 80% without production of hydrogen gas
Pyrolysis technology
Ablative
Cyclonic
Rotating cone
Entrained flow
Fluid bed
Auger
Bio-oil
Advantages
Liquid fuel & decoupled conversion process
Disadvantages
High oxygen & water content
Low viscosity, dark brown & 15-20% water
Hydrocracking
Produces synfuels from bio-oil
Green diesel