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Tuesday, 30 June 2009
European Biomass
Conference and Exhibition, Hamburg
Expert workshop:
High cofiring percentages
in new coal fired power plants
Chairperson: Sjaak van Loo
organised
by
IEA Bioenergy Task 32
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The interest in biomass
cofiring is growing rapidly as countries recognize this as an option to
rapidly introduce very large amounts of renewable electricity at low
costs, however the options to cofire in existing power plants are
limited. For new coal fired power plants that are now on the drawing
table it is a challenge to include maximum cofiring abilities in the
design. This in combination with very high steam conditions (over 700 °C
of steam) and the capability to capture CO2. The main issues are ash
related.
This workshop presented
some new concepts for coal fired power plants that can handle much
larger percentages of biomass cofiring, e.g. using fluid bed combustion,
pre-gasification or parallel combustion, but also other pulverized coal
concepts may do this when properly designed. Evidently this relates to
much more than just combustion but also includes gasification,
torrefaction, and even other processes.
The full report with a
summary of all presentations can be downloaded
here.
Individual presentations:
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