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The reduction and control technology of tar during biomass gasification/pyrolysis: An overview

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  • Han, Jun
  • Kim, Heejoon

Abstract

Biomass is an important primary energy source as well as renewable energy source. As the most promising biomass utilization method, gasification/pyrolysis produces not only useful fuel gases, char and chemicals, but also some byproducts like fly ash, NOx, SO2 and tar. Tar in the product gases will condense at low temperature, and lead to clogged or blockage in fuel lines, filters and engines. Moreover, too much tar in product gases will reduce the utilization efficiency of biomass. Therefore, the reduction or decomposition of tar in biomass derived fuel gases is one of the biggest obstacles in its utilization for power generation. In this paper, we review the literatures pertaining to tar reduction or destruction methods during biomass gasification/pyrolysis. On the basis of their characteristics, the current tar reduction or destruction methods can be broadly divided into five main groups: mechanism methods, self-modification, thermal cracking, catalyst cracking and plasma methods.

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  • Han, Jun & Kim, Heejoon, 2008. "The reduction and control technology of tar during biomass gasification/pyrolysis: An overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(2), pages 397-416, February.
  • Handle: RePEc:eee:rensus:v:12:y:2008:i:2:p:397-416
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