How to Make Biochar. t hermal characteristics. P yrolysis. (gasification). thermal destruction of biomass. exothermic above 250 ° C. an excess of energy is released. energy produced is self-sustaining. Syngas. no extra energy required once ignition occurs - PowerPoint PPT Presentation
thermal destruction thermal destruction of of biomass biomass no extra energy required once ignition no extra energy required once ignition occurs occurs as long as feedstock & oxygen are as long as feedstock & oxygen are available available thermal thermal characteristics characteristics as temperature increases w e i g h t d e c r e a s e s water water Formic Acid Formic Acid Acetic Acid Acetic Acid CO CO CH CH 4 Combustibles Combustibles Flammable Tars Flammable Tars Volatiles Volatiles Condensates Condensates Charcoal remains Charcoal remains low temperature low temperature high temperature high temperature H H 2 Danny Day, EPRIDA Danny Day, EPRIDA (less than 500 degrees C) preserves micropores preserves micropores increases char increases char production production Resins Resins How to Make Biochar How to Make Biochar Pyrolysis Pyrolysis exothermic exothermic above above 250 250 ° ° C C an excess of energy is an excess of energy is released released energy produced is self-sustaining energy produced is self-sustaining (gasificatio (gasificatio n) n) (800 - 1000 degrees C) degrades micropores degrades micropores increases biofuel production increases biofuel production Syngas Syngas click to continue
Transcript
thermal destruction thermal destruction of biomassof biomass
no extra energy required once ignition occursno extra energy required once ignition occursas long as feedstock & oxygen are availableas long as feedstock & oxygen are available
thermal characteristicsthermal characteristics
as temperature increases
weight decreases
waterwater
Formic AcidFormic AcidAcetic AcidAcetic Acid
COCOCHCH44
CombustiblesCombustibles
Flammable TarsFlammable TarsVolatilesVolatiles
CondensatesCondensates
Charcoal remainsCharcoal remainslow temperaturelow temperature high temperaturehigh temperature
HH22
Danny Day, EPRIDADanny Day, EPRIDA
(less than 500 degrees C)preserves microporespreserves micropores
increases char productionincreases char production
ResinsResins
How to Make BiocharHow to Make BiocharPyrolysisPyrolysis
exothermic exothermic above above 250250°°CCan excess of energy is releasedan excess of energy is released
energy produced is self-sustainingenergy produced is self-sustaining
How to Make BiocharHow to Make BiocharPronatura PlusPronatura Plus, South Africa, South Africa
continuous feed charcoalcontinuous feed charcoal
Continuous pyrolysis of farm residues into green charperforms 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.
• 50 dry tons / day50 dry tons / day• Modular constructionModular construction• TransportableTransportable• Designed for wood wastesDesigned for wood wastes• Produces bio-oil, charcoal, heatProduces bio-oil, charcoal, heat
modern modern pyrolysispyrolysis has little in common has little in commonwith traditional ways to make charcoalwith traditional ways to make charcoal
• 1 dry ton / day• Towed on trailer to biomass• Simple, Fully Automated• Broad range of applications• Processes agricultural wastes• Produces bio-oil, charcoal, heat
Shivam EnterprisesShivam EnterprisesWest Bengal, IndiaWest Bengal, India
2 Chamber Conversion ReactorMSW 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.
Rice Hull PyrolyzerRice Hull PyrolyzerIndiaIndia
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How to Make BiocharHow to Make BiocharBatch Bamboo Biochar & VinegarBatch Bamboo Biochar & Vinegar
