High performance pulp processing equipment design

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The pulp and paper industry and associated supplier industries one of the largest net export, strategically important industries in Canada that is facing extreme challenges from higher energy costs, high Canadian dollar and competition from low cost southern producers. Pulp screens and repulpers are key unit operations in the processing of wood into paper and Canada is one of the largest producers of screen cylinders and rotors in the world. This research is aimed at the development of high performance pulp screening and repulping equipment in support of both the Canadian pulp and paper industry as well as the supplier of these systems, Advanced Fiber Technologies Inc. One project will focus on the development of a lightweight, reliable, highly efficient screen cylinder through the development of advanced computational design tools validated through laboratory and pilot experiments. The second project will focus on understanding the mechanisms of screen blinding that limit the capacity of the screen. Through this understanding we will develop new cylinder designs with increased capacity. The third project focuses on the development of a high performance repulper that significantly reduces the energy required to deflake baled and recycled pulp.