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Home » Volume 27, 2012 » Issue No. 5
PAPER CHEMISTRY
Prediction of breaks caused by lipophilic extractives using on-line turbidity measurement
Cédric Cael, Lyne Desharnais, Stéphane Dumarçay, Marie-José Stébé, Thierry Delagoutte, Armand Klem and Philippe Gérardin
Abstract
Thermomechanical pulp (TMP) was sampled from paper mill using a mixture of deinked pulp and TMP to produce newsprint. After validation of a correlation between extractives level and associated centrifuged turbidities of TMP, the latter parameter was compared to the paper machine runnability according to stickies related break risk. The development and the implementation of an automated turbidity sensor in the paper mill permitted regular measurement of the turbidity parameter, thus allowing prediction of periods during which stickies break are more important. As expected, the results indicate that a high level of TMP turbidity and consequently a high amount of extractives involves a higher stickies break risk.
Keywords
Extractives, Paper machine runnability, Stickies break, Thermomechanical pulp, Turbidity
Pages
910-914
Full text
PDF Document N2012-27-05-p910-914-Gerardin.pdf (826KB)
Prediction of breaks caused by lipophilic extractives using on-line turbidity measurement (2012-27-05-p910-914-Gerardin.pdf)