1. thermal characteristics
How to Make Biochar
Pyrolysis
(gasification)
thermal destruction of biomass
thermal characteristics
exothermic above 250°C
an excess of energy is released
energy produced is self-sustaining
Syngas
no extra energy required once ignition occurs
as long as feedstock & oxygen are available
water H2 CO
CH4
Formic Acid
Acetic Acid
Combustibles
Volatiles
weight decreases
Flammable Tars
Resins
Condensates
low temperature
high temperature
(less than 500 degrees C)
preserves micropores
increases char production
Charcoal remains
( degrees C)
degrades micropores
increases biofuel production
Danny Day, EPRIDA
as temperature increases
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2. How to Make Biochar industrial scale 2007
BIOMASS
2007
Environmental Business of the Year
Australia
USA office
Madison, Wisconsin
EXHAUST
H2 + CO
DRYER
GAS
CLEANER
GAS
GENERATOR
SYNGAS
ELECTRIC
POWER
PYROLYSIS
GASIFIER
BEST Energies, Australia
continuous feed
Electric Power Plant
BIOCHAR
GAS
CLEANER
modern pyrolysis has little in common
with traditional ways to make charcoal
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3. How to Make Biochar industrial scale Pronatura Plus, South Africa
continuous feed charcoal
ABRI, Ontario, Canada
Shivam Enterprises
West Bengal, India
Rice Hull Pyrolyzer
India
2 Chamber Conversion Reactor
MSW is fed by “charging unit” into upper chamber where it is gasified.
Gases leave reactor through outlet and combusted in burn chamber.
MSW falls into lower chamber where it forms char & combustible gas.
Gas is burned with air entering through slits.
Charcoal is discharged at the bottom.
50 dry tons / day
Modular construction
Transportable
Designed for wood wastes
Produces bio-oil, charcoal, heat
1 dry ton / day
Towed on trailer to biomass
Simple, Fully Automated
Broad range of applications
Processes agricultural wastes
Produces bio-oil, charcoal, heat
Continuous pyrolysis of farm residues into green char
performs like charcoal from wood, at half the cost.
Machinery is modest, requires minimal energy
(8kw electric), with no toxic emissions.
Run by two persons, produces 4 tons a day.
modern pyrolysis has little in common
with traditional ways to make charcoal
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4. Batch Bamboo Biochar & Vinegar
How to Make Biochar
industrial scale
Batch Bamboo Biochar & Vinegar
Hangzou, China
vinegar
condenser
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5. backyard biochar & wood vinegar
How to Make Biochar
backyard biochar & wood vinegar
Larry Williams, Oregon
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