Robert Lerner: Seeding biochar in Costa Rica

Seeding Biochar in Costa Rica
Robert Lerner- BCR
Jason Borner- BCR
Tamara Benjamin- CATIE
Gabriela Soto- CATIE
Stephen Joseph- IBI
Nikolaus Foidl- IBI
Julie Major- IBI
Phil Covell- FT
Frank Hicks- FT
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Foidl Kiln design
Features:
• 4 m3 batches
• Low Emissions
• Temperature control /
even heat distribution
• Durable stainless steel
construction
• Pyrolysis time: 4-6 hours &
rapid cooling
• production of ‘smoke water’
• Production: 150-300 kg/day
Draw-backs:
• Capital expense
• Susceptible to heat damage
when wood used as fuel
Exhaust / flaring of
gases
Secondary air inlet
and burner for
partial combustion
of gases between
stainless steel walls
Wood to be
charred, up to 12
cm diameter,
vertical orientation
Fire box to initiate
pyrolysis
Movable Insulating
wall
Path of pyrolysis gases
We ultimately selected a unit that has evolved over more than a dozen iterations
from the Brazilian ʻbee hiveʼ kiln…
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BMC
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The proposed development platform offers the potential for
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Linking several Hornito kilns in series enables priming of subsequent units with waste heat from the
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