In this work, a novel experimental filtration device with pressure profiling was used for analyzing water removal from the fiber network in the forming section of a paper machine. The experimental data were used to develop a stratified model for the flow resistance of the developing fiber sheet during the filtration process. The new model was verified with both laboratory- and pilot-scale measurements and excellent agreement was observed between them. It was also observed that there is a strong linear correlation between the maximal attainable solid content of a filtered sheet after the forming section and the instantaneous response to pressure of the flow resistivity of the furnish.
- flow resistance
- paper dewatering
- pulp drainage
Koponen, A., Haavisto, S., Liukkonen, J., & Salmela, J. (2016). The flow resistance of fiber sheet during initial dewatering. Drying Technology, 34(12), 1521-1533. https://doi.org/10.1080/07373937.2015.1132427