Deposit Formation during the Co-Combustion of Coal-Biomass Blends

  • K. R. G. Hein
  • T. Heinzel
  • A. Kicherer
  • H. Spliethoff

Abstract

In order to minimise the negative effect that energy conversion has upon the global climate, the utilisation of CO2-emitting fossil fuels has to be reduced by applying conversion processes with higher efficiencies or by changing the fuel base. One of the options under investigation in large scale electricity production is to partly replace coal with biomass.

During recent years, there has been extensive research as well as demonstrations concerning combustion of biomass as a single fuel or combined with coal in various countries. Especially noteworthy is in this connection an EU-funded international project carried out in 1993/94. In this project it was shown that the utilisation of biomass may lead to operational problems through fouling and slagging of heat transfer surfaces due to the change in fuel composition. In particular, the high and variable alkali content of different types of biomass was found to be most troublesome under certain conditions.

In the paper the major results of the research group at the University of Stuttgart (IVD) will be presented; the appearance of deposits during biomass co-combustion will be described and their dependence on fuel properties and on parameters of operation explained. Also some examples of experience with process alternations for improvements will be given.

Keywords

Fluid Temperature Softening Temperature High Rank Coal Straw Particle Power Plant Technology 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • K. R. G. Hein
    • 1
  • T. Heinzel
    • 1
  • A. Kicherer
    • 1
  • H. Spliethoff
    • 1
  1. 1.Institute of Process Engineering and Power Plant Technology (IVD)University of StuttgartStuttgartGermany

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