Clustering of plugging behavior in screening room of CTMP plant

Authors:
Timo Ahvenlampi;Manne Tervaskanto;Tuomo Sippus;Ville Hietanen
Affiliations:
Systems Engineering Laboratory, University of Oulu, Finland;Systems Engineering Laboratory, University of Oulu, Finland;Stora Enso Oyj, Research Centre, Finland;Metso Automation Oy, Tampere, Finland
Venue:
FS'06 Proceedings of the 7th WSEAS International Conference on Fuzzy Systems
Year:
2006

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Abstract

In this study, the plugging in the pressure screens at CTMP plant is investigated. The plugging occurs in the surface of the screen in the pressure screen and could prevent its normal operation. That can lead to the shutdowns of the screening room. The aim of the research is to study plugging in the screening room, when all the three screens are in the operation. In the research, fuzzy clustering methods are utilized in the study of the plugging behavior. With fuzzy clustering methods different operation states are diagnosed separately. The methodology is applied to the pressure screening of the chemi-thermomechanical pulping (CTMP) -plant. Different operation states were found and these can be used in the planning and diagnosis of the screening room operation.