Title:
Additivation Guideline - How to Utilise Inorganic Additives as a Measure to Improve Combustion Related Properties of Agricultural Biomass Fuels
Author(s):
Brunner, T., Wohlmuther, M., Kanzian, W., Obernberger, I., Pichler, W.
Document(s):
Paper
Abstract:
Within a nationally funded Austrian research project an additivation guideline for agricultural biomass fuels has been developed. It aims at the targeted application of inorganic additives to overcome ash related problems (slagging, deposit formation, particulate emissions) usually associated to the combustion of agricultural fuels in fixed-bed combustion units. By the application of this guideline, these fuels shall be made applicable for conventional medium and large-scale wood combustion systems at economically and environmentally sound constraints. Thereby, advanced fuel characterisation tools such as fuel indexes, thermodynamic high temperature equilibrium calculations and lab-scale reactor tests as well as techno-economic considerations have formed the basis for the development of a strategy for the selection of technologically and economically optimised additives and additivation rates with respect to the specific compositions of the agricultural biomass fuels of interest. The strategy has been validated by combustion tests with additivated agricultural fuels at a 180 kW grate-fired combustion plant. The results of these test runs have shown that slagging, aerosol and deposit formation could significantly be reduced by additivation. As a conclusion an additivation guideline has been worked out which shall support interested stakeholders in the targeted and optimised selection of additives for problematic agricultural biomass fuels.
Keywords:
agricultural residues, combustion, fixed bed, additives, agropellet, guidelines
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Biomass combustion in large utilities
Event:
23rd European Biomass Conference and Exhibition
Session:
2AO.8.4
Pages:
508 - 518
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2AO.8.4
Price:
FREE
