history started in 2012 philosophy: -high efficiency biomass to charcoal -robust and simple...
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HistoryStarted in 2012
Philosophy:- High efficiency biomass to charcoal- Robust and simple technology- No hazardous emissions- Affordable production costs
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Philosophy- Robust and simple technologyNo heavy equipment for loading/unloadingMost construction work on locationConstruction materials readily availableNo advanced process control equipment
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PhilosophyHigh efficiency- Heating (combustion) separated from
carbonisation- Drying and carbonisation separated- Energy content volatiles used for process
heating
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PhilosophyNo hazardous emissions- Prevention of emissions of black vapours by combustion in wood stove- Health problem workers and environmental problem avoided
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First design
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Demo plant in Bosnia
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Results tests
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Results tests- Long drying time- Efficiency > 35%- After start-up process heat supply from
volatile; no emissions of volatiles- Good quality charcoal- Caloric value charcoal: 30-32 MJ/kg- Temperature flue gases > 100 oC
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Results tests- Top loading less practical- Cooling outside reactor to decrease
production time one cycle- Separate and simultaneous drying with flue
gases
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Improved design- Front loading with reactors (3,5 m3 each)- Start-up with wood stove- Volatiles are burned in wood stove- Two furnaces: one for drying and one for
carbonisation- Alternating use of reactors
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Improved design
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Principle
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Production full size module
- Two furnaces each with four reactors- 14 m3 volume carbonisation per batch- 1.000-1.100 kg charcoal per batch- 2-3 batches per day (depending on type of
biomass, particle size, moisture content etc.)
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Program demo-plant 2015
- Optimize time and temperature vs. quality charcoal
- Operational protocol- Tests with rice hulls and sugar cane - Tests with peat- Other biomass