Abstract
Nakoso Mill in the southernmost point of Fukushima lies to Iwaki City on about two hours from the metropolitan circle. This mill is a medium scale factory in Nippon Paper Industries Co., Ltd, it owns one paper machine and five coating machines.The energy situation of this mill producing in the information papers results an annual power consumption 79, 298 MWh (on private electric generation 66, 623 MWh), generation of steam 66, 623 MWh (heavy oil consumption 36, 200 kL) from February, 2000 to February, 2001. The energy intensity doesn't show remarkable improvement in spite of many energy-saving projects, because of increase of energy consumption by investment in plant and equipment in order to cope with more and more variety of products to supply user needs. This mill has been tackled for attainment of the target of energy conservation in whole this company (10% reduction of energy consumption per unit products based on 1990 levels to 2010). This paper reports on recovering exhaust heat of coating machine dryer, has been planned for energy-saving measures of coating machine occupied the majority of steam consumption.
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