Paper details

Title:

Blended Fuels Based on Alternative Biomasses - An Aspect to Fuel Standards

Author(s):

Schneider, A., Kappes, M., Kirsten, C., Weller, N., Lemin, B., Schotte, E., Hein, D., Krumm, W.

Document(s):

Abstract:

Todays unused biomass potentials may play an important role in future energy market. Due to an in­creasing demand of wood for material use and simultaneous expansion of energetic biomass utilization a competitive situation is unavoidable. An exploitation of waste materials and by­products of biological origin lead to a potential enhancement of biofuels and so a less expensive energy source may be opened up. The often referred disadvanta­geous thermo­chemical characteristics of alternative biomasses can be counteracted by addition of biomass with de­fined properties. This study is primarily concerned with preparation, characterization and classification of blended fu­els based on miscanthus and wood according to current fuel standards. Therefore biomass blends with systematically varied ratios are pelletized. The aim of pelletizing is to ensure accurate blending ratios and the production of a mar­ketable fuel. Using the flat die mechanical durabilities in the range of 93.5 wt.­% to 96.9 wt.­% were reached. Further improvement can be achieved by optimization of the process parameters. However, the mechanical durability in­creases with higher wood proportions caused by higher lignin contents. Proximate analysis and ash behavior of the pelletized blends are also presented. Thereby the ash content increases with higher miscanthus content in the blend. In contrast the volatile content decreases with higher miscanthus admixing. The sintering temperature of all wood­miscanthus blends lies between 700 °C and 750 °C. Blends with a miscanthus rate of 40 ­ 80 wt.­% show similar be­havior with a lower ash softening temperature compared to the unblended fuels. Only blends with a miscanthus con­tent of 20 wt.­% reach an softening temperature above 1050 °C ­ a property being dominantly influenced by wood.

Keywords:

miscanthus, mixed biomass pellet, wood

Topic:

Processes for Fuels from Biomass

Subtopic:

Production and supply of solid biofuels

Event:

19th European Biomass Conference and Exhibition

Session:

VP3.1.25

Pages:

1980 - 1984

ISBN-13:

978-88-89407-55-4

ISBN-10:

88-89407-55-7

Paper DOI:

10.5071/19thEUBCE2011-VP3.1.25

Price:

FREE