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A Study on the Accumulation Phenomena of Oxidized Starch in White Water of Closed Fine Papermaking Process (Part 3) -Effect of white water and broke use ratios on the unsteady state of papermaking process-

Ahn, Hyun-Kyun (Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University)
Lee, Hak-Lae (Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University)

Publication Information

Journal of Korea Technical Association of The Pulp and Paper Industry / v.38, no.2, 2006 , pp. 1-8 More about this Journal

Abstract

In this study a process simulation method was used to analyze the accumulation phenomena of anionic starch in the process white water as the closure level of a fine paper making process is increased. A pilot paper machine was used as a model process. Dynamic simulations of the influence of white water usage ratio and uncoated broke addition ratio on the variation of process variable was monitored as a function of time. Results from the dynamic simulations showed that the volume of reservoirs affected the dynamic behavior of the process. The dynamic behavior of flow rate and dissolved starch concentration in process units were different from each other. The speed of the change of dissolved starch concentration in process units was depend on the starting point of the change of dissolved starch concentration, the length of circulation loop, and the volume of reservoirs.

Keywords

accumulation phenomena; anionic starch; white water; closed mill; dynamic simulation;

Citations & Related Records

Reference

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