On The Impact Of Dissolved Lignin In Oxygen Delignification And Chlorine Dioxide Stages, 2015 PEERS Conference



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While carry-over of dissolved lignin between stages in the pulp mill fiberline is a well-known problem it is still typically seen only as a minor disturbance factor or bias in the control of oxygen delignification and bleaching stages. The present study however reveals that it plays a larger role than anticipated, and that it should be properly analyzed in order to correctly control the process stages. This is especially important for the O2 and D0 stages as the lignin content is still high in these positions. The results of the study show that dissolved lignin carried over between stages may have a significant impact on the bleaching chemical consumption and indirectly on the pulp quality.



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Author: Niclas Andersson, Caroline Wilke, Rick van Fleet, Akhlesh Mathur, and Ulf Germgård
On The Impact Of Dissolved Lignin In Oxygen Delignification
On The Impact Of Dissolved Lignin In Oxygen Delignification And Chlorine Dioxide Stages, 2015 PEERS Conference
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