Abstract
The aim of the thesis is to improve the existing quality assurance methods for refuse derived fuels (RDF) at the Austrian plant Bruck an der Mur of the Norwegian paper manufacturer Norske Skog. To achieve this, it is necessary to calibrate the near infrared sensor (NIR-sensor) in the fuel storage area according to DIN 54390 and the manufacturer¿s specifications. This calibration is carried out within the framework of the ReWaste F project. A total of 300 samples with a weight of 4,5 kg each have been required for this calibration. After the development of a sampling concept, these samples were taken during ongoing plant operation. The samples will be measured with the NIR-sensor during a scheduled two-week plant shutdown. The samples will be handed out to the team at the AVAW of Montanuniversität for further analysis. 60 of the samples, which were also used for the calibration of the sensor, served as reference samples fort the calibration of the X-ray fluorescence analysis system (XRF) at the plant. The goal for the XRF-system is to develop an analysis method for RDF. After the samples have been prepared for laboratory analysis, a portion of each sample has been analyzed in the laboratory of the Chair. The remainder were pressed to tablet for the XRF analysis. In the laboratory, the samples have been analyzed for the elements: chlorine, sulfur, calcium, magnesium, sodium and potassium. These elements were used to calibrate the XRF, forming the basis for an XRF-method for the analysis of RDFs. To verify the developed XRF measurement method, 24 samples have been analyzed using this approach. For all elements the deviation between XRF measurement and laboratory analysis was kept below ±15%. Chlorine was the exception, because it showed greater discrepancies than the other elements. These deviations can be addressed in the future through minor adjustments to the calibration or potential modifications to the analytical equipment.
| Translated title of the contribution | Implementation of quality assurance methods using X-ray fluorescence and near-infrared technology at Norske Skog Bruck |
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| Original language | German |
| Qualification | Dipl.-Ing. |
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| Supervisors/Advisors |
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| Award date | 27 Jun 2025 |
| Publication status | Published - 2025 |
Bibliographical note
no embargoKeywords
- X-ray fluorescence
- near-infrared technology
- RDF
- XRF