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Title:
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Logistics and pretreatment of biomass fuels for gasification andcombustion: contribution to the Joule project: "Energy from
biomass: an assessment of two promising systems for energy
production"
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Author(s):
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Published by:
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Publication date:
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ECN
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1995
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ECN report number:
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Document type:
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ECN-C--95-038
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ECN publication
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Number of pages:
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Full text:
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64
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Download PDF
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Abstract:
Two aspects which are relevant for the conversion of biomass intoelectricity are discussed: the logistics of biomass supply, and the
pretreatment of solid biomass fuels at the location of the conversion plant.
The costs of logistic operations by truck, ship and train have been
calculated for forest residues, wood waste from parks and gardens, demolition
wood, sewage sludge and waste paper. The results show that, for the
Netherlands, transport by truck is the cheapest option in all cases. A price
range from 3.0 ECU/odt for sewage sludge to 11.6 ECU/odt for forest residues
was found. The results on logistics have previously been reported elsewhere.
The pretreatment technology of solid biomass fuel has been assessed. Based on
a literature survey and inquiries of manufacturers the technical, economic
and environmental information has been gathered. The considered pretreatment
operations are: storage and transport at the conversion site; size reduction;
drying; briquetting and pelletizing; feeding of solid biomass into gasifiers.
An economic evaluation of the pretreatment system for a 30 MWe gasification
plant has been made for five biomass fuels: fresh wood, paper, sewage sludge,
verge grass and demolition wood. The differences in calculated pretreatment
costs for these fuels result mainly from the differences in heating value and
moisture content. The range of pretreatment costs found was from 1.4 MECU for
demolition wood to 11.4 MECU for wet sewage sludge. 29 figs., 31 tabs., 23
refs.
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