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The compaction disturbances in the chip column and especially observing and visualization of disturbances in the conventional cooking process has been studied. The compaction and the flow of the chips through the digester determine the residence time of the chips in each section of the digester. Owing to this the compaction is an important factor to both the control of the process and the quality of the end product.
In the study two diverse methods for visualizing and observing the fault situations related to chip compaction are examined. The chip compaction in the digester is calculated using the physical model and results can be presented as a vertical compaction profile. The compaction index is formulated with the aid of the actual process measurements and fault situations can visually be presented with eye-catching colours.
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Observation and Visualization of the Chip Compaction Disturbances in Digester, 2005 Engineering, Pul