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Title:
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Co-gasification of biomass and coal in entrained-flow based IGCCs
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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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1-7-1998
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ECN report number:
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Document type:
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ECN-RX--98-042
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Article (scientific)
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Number of pages:
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12
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Published in: ECN contributions to: POWER-GEN '98, Milan, Italy, 9-11 June 1988; BIOENERGY '98, Madison, Wisconsin, 4-8 October 1998 (), , , Vol., p.-.
Abstract:
The use of coal for large scale power production is of growingenvironmental concern. In spite of the fact that 'clean' coal conversion
technologies integrated with high-efficiency power production facilities,
e.g. IGCC (Integrated Gasification Combined Cycle), are developed, the aim
for sustainable development strives for a power production system based on
renewable sources. One of the most promising renewable sources that can be
used in the Netherlands is biomass. In this paper the technical feasibility,
economic profitability, and environmental acceptability, of co-gasification
of biomass in coal-fired oxygen-blown entrained-flow based IGCCs is
determined. A preliminary literature survey has been performed to identify
commercially available entrained-flow based IGCC processes, the availability
of biomass (waste) materials for power production purposes in the
Netherlands, and potentially interesting co-gasification concepts.
Steady-state integral system calculations within the flowsheet simulation
package ASPEN"p"l"u"s, of both a base-case coal-fired IGCC process and three
co-gasification concepts, have been and are being performed, resulting in
overall mass and energy balances, net overall electrical/CHP system
efficiencies, and avoided specific CO2 emissions. Economic system assessments
will be performed to calculate specific total investment costs, power
production costs, and to give an indication of the profitability of the
necessary additional investment in case of co-gasification. Supporting
experimental work has been and is being performed to provide lacking data
necessary for the system assessments, and to get a better understanding
concerning the conversion behaviour of biomass (waste) materials under
specific entrained-flow conditions. 8 refs.
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