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ECN publication
Operational experiences of (in)direct co-combustion in coal and gas fired power plants in Europe
Ree, R. van; Korbee, R.; Meijer, R.; Konings, T.; Aart, F. van
Published by: Publication date:
ECN 1-2-2001
ECN report number: Document type:
ECN-RX--01-008 Conference Paper
Number of pages: Full text:
18 Download PDF  

Presented at: Power-Gen Europe 2001, Brussels, Belgium, 29-31 mei 2001.

The operational experiences of direct and indirect co-combustion of biomass/waste in European coal and natural gas fired power plants are addressed. The operational experiences of mainly Dutch direct co-combustion activities in coal fired power plants are discussed; whereas an overview of European indirect co-combustion activities is presented. The technical, environmental, and economic feasibility of different indirect co-combustion concepts (i.e. upstream gasification, pyrolysis, combustion with steam-side integration) is investigated, and the results are compared with the economic preferable concept of direct co-combustion. Main technical constraints that limit the co-combustion capacity of biomass/waste in conventional coal fired power plants are: the grindability of the biomass/coal blend, the capacity of available unit components, and the danger of severe slagging, fouling, corrosion and erosion. The main environmental constraints that have to be taken into account are the quality of produced solid waste streams (fly ash, bottom ash, gypsum) and the applicable air emission regulations. 6 refs.

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