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Monitoring tools for efficient papermaking
RISE., Innventia.
RISE., Innventia.
RISE., Innventia.
University of Coimbra, Portugal.
2014 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

With efficient papermaking, the objective is to produce a product that meets a sufficiently high performance standard at the lowest possible cost for production. Production costs tend to centre around the use of energy, raw fibre materials, and fresh water. Poor control of unit papermaking processes can create unwanted variability in product qualities. This forces producers to use excessive amounts of resource, including fibre raw material and energy in order to meet minimum product requirements. Control of unit processes is therefore an essential ingredient to efficient papermaking. One of the key challenges with process control is the ability to monitor accurately specific processes with a high spatial and temporal resolution in order to capture unwanted variability. New measurement methods have, within recent years, revealed surprisingly high levels of variability in many unit process, in product properties, and in the underlying structure of paper sheets. In particular, variability on the centimetre (or millisecond) scale is now understood to be significant. This work presents an overview of three novel measurement tools and their application for monitoring different stages of the paper production process. Specifically, the tools discussed here include, Electrical Impedance Tomography (EFT), STFI Online Forming Analyser (SOFA), and Infrared Thermography (IR) techniques. Potential implementations of each tool within different unit processes on a papermachine are supported by practical examples. When used together, it is shown that it could be possible to monitor the entire production line with enough accuracy for online control.

sted, utgiver, år, opplag, sider
2014. Vol. 1, s. 7s. 617-623
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-9552Scopus ID: 2-s2.0-84939478031ISBN: 9781510801288 (tryckt)OAI: oai:DiVA.org:ri-9552DiVA, id: diva2:968298
Konferanse
PaperCon 2014, Nashville, Tennessee, USA, 27-30 Apr. 2014
Tilgjengelig fra: 2016-09-12 Laget: 2016-09-12 Sist oppdatert: 2025-09-23bibliografisk kontrollert

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