Development of a Quality assurance system for Refuse Derived Fuels (RDF) and Biofuels
agricultural production as well as private consumption of goods
generates energy-rich residues and waste streams. These could be used
as solid Refuse Derived Fuels in incineration plants under certain
conditions with the aim of energy recovery. Such use of these fuels
requires the determination of relevant parameters, e.g. the heating
value or chlorine and sulfur content, to allow for a participation in
the fuel trade and for utilization in a firing process. Present
methods for the energetic characterization of RDFs are time-consuming
and expensive. Thus, providers and consumers of RDF are interested in
the application of optimized methods that determine the fuel quality
in a reliable, fast and inexpensive way.
At the Chair of Solid Waste Management research activities are carried out aiming at the optimized heating value determination of RDFs within the scope of a ZIM-project (ZIM, http://www.zim-bmwi.de/ ) funded by the Federal Ministry of Economics and Technology (BMWi, refer to http://www.zim-bmwi.de/ ). The targeted process is based on the automated drying and combustion of a relatively big RDF sample. One focus of the work is the verification of empirical heating value functions on the basis of the elementary or flue gas composition, respectively. The results of the investigation will contribute to the development of a fast test system for the determination of the chlorine, ash and water content and the heating value of RDFs. In particular is investigated the influence of the hydrogen and nitrogen content of the tested fuels on the heating value determination that has been implemented into the fast test system.