ECN publication
Title:
Biomass cofiring potential and experiences in the Netherlands
 
Author(s):
 
Published by: Publication date:
ECN 1-11-2000
 
ECN report number: Document type:
ECN-RX--00-035 Other
 
Number of pages: Full text:
18 Download PDF  

Abstract:
The main goal of the Dutch Renewable Energy Policy is that in 2020 10% ofthe total energy consumption has to be provided by renewable energy sources. Cofiring of biomass and waste in conventional coal-fired power plants, and natural gas fired installations, is expected to contribute substantially to the short-term market introduction of biomass and waste based power production technologies in a technical, environmental, and economic attractive way. In this paper the total technical, environmental and economic cofiring potential for biomass, and waste in the Netherlands is analysed. An overview is given of current and future cofiring activities in the Netherlands. Furthermore, the following questions are addressed: (1) the total current and future availability and contractability of biomass and waste materials for energy purposes, (2) the concepts that can be used to cofire the large variety of biomass and waste materials (direct cofiring, indirect cofiring, cofiring by upstream gasification, cofiring by upstream pyrolysis, cofiring by upstream Hydro-Thermal-Upgrading, and cofiring by upstream combustion with downstream steam-side integration), (3) technical constraints that limit the total cofiring potential, (4) environmental constraints that limit the total cofiring potential (EU air emission constraints, quality and commercial applicability of co-produced solid residues), and (5) financial-economic constraints. It is concluded that cofiring indeed has the potential to play a major contribution to the future renewable energy based energy supply system in the Netherlands. For cofiring of relatively clean biofuels in conventional coal-fired power plants direct cofiring is preferable, followed by indirect cofiring and upstream gasification without additional fuel gas clean-up. For co-firing of more contaminated biofuels upstream gasification with (advanced) fuel gas clean-up and upstream combustion with steam-side integration have been identified as the most promising concepts. For cofiring in natural gas fired combined-cycles, upstream gasification with advanced fuel gas clean-up has been identified as the only applicable technology. 8 refs.


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