BGS | FH MÜNSTER

Material recyclable share of solid recovered fuels for co-incineration in Germany

All authors

1 RDF substitution
rates in the EU-28 and
German cement
industry [17] [20]

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2 Quantities of RDF used in the cement industry, the EU-28 (EU) and in Germany (G) [17] [20]

3 Comparison of the mean ash compositions of the solid recovered fuels from municipal waste and commercial waste with the mean raw meal [16] composition

4 Ternary diagram extended with analysis results of SRF ash composition

5 Distribution of ash content with different temperatures (according to [21])

To obtain information on the ash composition of solid recovered fuels (SRF), initial investigations have been carried out in production plants for quality assured SRF. Results of these investigations are shown in this publication. For this, the status quo of co-incineration in cement plants with regard to the legal context and the development of alternative fuels in Germany will be described first. Then, the solid recovered fuels are specified. Finally, the element contents of the ashes of SRF samples from different origins are presented with regard to a recycling quota and to savings in carbon dioxide emissions.

1 Introduction

In general, the cement production process offers different possibilities for the utilization of alternative fuels and raw materials, which lead to savings of natural resources and environmentally friendly disposal of wastes [6]. Due to the fact that ash from solid recovered fuels has valuable constituents for cement production, such as SiO₂, CaO, Al₂O₃, Fe₂O₃ etc. which are incorporated into the clinker, primary raw materials can be saved (see also [1], [21]). This has meanwhile been proven in various investigations, so that these constituents can technically be considered as...

TEXT Prof. Dr.-Ing. Sabine Flamme^1,2, Dipl.-Biol. Sigrid Hams^1,2, Merle Zorn B. Eng.²
¹Gütegemeinschaft Sekundärbrennstoffe und Recyclingholz e. V. (BGS e. V.), Münster/Germany
²IWARU Institut für Infrastruktur, Wasser, Ressourcen und Umwelt, FH Münster, Münster/Germany