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Increasing the Calorific Value of Rye Straw Pellets with Biogenous and Fossil Fuel Additives

Pelletizing biomass, especially straw and stalky materials, require a product-specific size reduction and liberation. This paper characterizes the cereal straw rye and specifies the necessities for production of energy pellets. The product-specific size reduction was achieved with the help of an impact mill. Further, the moisture content and the particle size distribution play an important role in the pelletization process and also with respect to the energy characteristics. Rye straw pellets have a lower heating value of 17.2 MJ/kg. The objective of this work is to increase the heating value from 17.2 MJ/kg to a value in between 18 and 18.5 MJ/kg. The pellets are prepared with increasing water contents and with the biogenous and fossil additives. The biogenous and fossil additives are chosen such that they ensure the necessary binding and simultaneously increase the heating value. Besides the heating value, the main pellet quality parameters such as mechanical stability, abrasion resistance, and combusti...

Authors:   Satyanarayana Narra; Yonggui Tao; Claudia Glaser; Hans-Jörg Gusovius; Peter Ay
Journal:   Energy & Fuels
Year:   2010
DOI:   10.1021/ef100823b
Publication date:   16-Sep-2010
Facts, background information, dossiers
  • reductions
  • particle size distribution
  • moisture
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