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Optimization of Water Reuse Network Using Water Pinch Method in Duplex Board Mill  

Ryu Jeong-Yong (Pulp and Paper Research Center(PPRC), Korea Research Institute of Chemical Technology(KRICT))
Park Dae-Sik (Pulp and Paper Research Center(PPRC), Korea Research Institute of Chemical Technology(KRICT))
Kim Yong-Hwan (Pulp and Paper Research Center(PPRC), Korea Research Institute of Chemical Technology(KRICT))
Song Bong-Keun (Pulp and Paper Research Center(PPRC), Korea Research Institute of Chemical Technology(KRICT))
Seo Yung-Bum (Department of Forest Products, Chungnam University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.37, no.4, 2005 , pp. 44-51 More about this Journal
Abstract
Paper mills use and discharge lots of water. And so now the papermaking industry could be classified into major water consuming industry In order to analyze the process water network and to establish the mass, water balance of duplex board mill, computer aided simulation was made using water pinch method. Based on the pinch analysis results, reuse of process water, after regenerating by microfilter as much as $140\;m^3/hr$, could be suggested without significant accumulation of contaminants in process water. According to this suggestion about $3000\;m^3/day$ of recycled process water could be sub stituted by regenerated water and consequently $30\%$ of energy cost is expected to be reduced.
Keywords
water pinch; water network; recycling reuse; mass balance; optimization;
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