Influence of short-term variations on energy-saving opportunities in a pulp mill
Journal article, 2010

Significant opportunities for energy savings have been identified in the hot and warm water system of a kraft pulp mill. The energy-saving opportunities found at the mill studied, 15.7 MW of steam savings and 24.8 MW of usable excess heat, correspond to 18% of the mill's total steam use. Short-term variations in the process have been studied in order to identify and quantify the influence of these variations on the energy-saving opportunities. Daily and 10-min averages of measured data were used as varying input data in the retrofitted heat exchanger network. When the short-term variations were considered, the total energy-saving opportunities fell by 8% when daily averages are used and by 11% when 10-min averages are used. At least 65% of the influence of short-term variations was detected when seasonal variations are considered. (C) 2010 Elsevier Ltd. All rights reserved.

Short-term variations

Kraft pulp mill

Thermal process integration

Energy saving

Pinch analysis


Jörgen Lars Persson

Industrial Energy Systems and Technologies

Thore Berntsson

Industrial Energy Systems and Technologies

Journal of Cleaner Production

0959-6526 (ISSN)

Vol. 18 9 935-943

Subject Categories

Chemical Process Engineering



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