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Combined incineration of industrial wastes with in-plant residues in fluidized-bed utility boilers – decision relevant factors

Energy & Environmental Management, University of Applied Science Pinkafeld/Burgenland, Pinkafeld, Austria arne.ragossnig{at}fh-burgenland.at

Karl E. Lorber

Institute for Sustainable Waste Management and Technology,University of Leoben, Leoben, Austria

In Austria more than 50% of the high-calorific industrial residues and wastes generated are utilized for energy recovery in industrial utility boilers. This study investigated full-scale trials of combined incineration of in-plant residues with various industrial wastes. These trials were carried out in order to learn how the alternatively used fuel influences the incineration process itself as well as the quantity and quality of the various incineration products. The currently used fuel, which consisted of in-plant residues as well as externally acquired waste wood and the refuse-derived fuel (RDF) mixtures used during the full-scale trials are characterized in terms of material composition as well as chemical and physical parameters. An input–output mass balance for the incineration plant (two fluidized bed combustion units, 20 and 30 MW, respectively) has been established, based on the data collected during the full-scale incineration trials. Furthermore, pollutant concentrations in the off-gas as well as the solid incineration residue are reported. It is not only the pollutant content but also a variety of other internal as well as external factors that have to be considered if a company is to decide whether or not to thermally utilize specific waste types. Therefore a strengths and weaknesses profile for several types of waste and the specific industrial boiler is also presented.

Key Words: co-incineration • refuse-derived fuel (RDF) • fluidized • bed utility boiler • mass flow analysis (MFA) • flue gas emissions • combustion residues • wmr 841–8

Waste Management & Research, Vol. 23, No. 5, 448-456 (2005)
DOI: 10.1177/0734242X05057697


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