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Title:
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Co-gasification of coal and biomass in entrained-flow based IGCCs: technical, economic, environmental, and experimentally supported assessment of three concepts
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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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1-10-1998
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ECN report number:
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Document type:
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ECN-C--98-060
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ECN publication
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Number of pages:
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Full text:
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54
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Download PDF
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Abstract:
The technical feasibility, economic profitability, and environmentalacceptability of co-gasification of biomass in coal-fired oxygen-blown
entrained-flow based IGCCs is discussed. Comparing the required biomass
contractability for power production purposes in the Netherlands of 24 PJ in
2000, 45 PJ in 2007, and 75 PJ in 2020, to meet the required renewable energy
policy goal as defined by the Dutch Ministry of Economic Affairs in 1995,
with the current (1997) amount of Dutch contractible organic waste streams
available (30-35 PJ), it is concluded that growing of energy crops and/or
import of biomass materials is insuperable in the near future (after 2000),
to satisfy to the required total demand. Both a base-case coal-fired
oxygen-blown entrained-flow based IGCC process - showing strong resemblance
to the Puertollano IGCC plant (Spain) - and three co-gasification concepts,
viz.: (1) a concept with separate dry coal and biomass feeding systems; (2) a
concept with a combined dry coal/biomass-derived pyrolysis char feeding
system; and (3) a concept with parallel biomass pre-treatment/gasification
and combined fuel gas clean-up/power production, were defined for further
consideration. 24 refs.
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