Influence of short-term variations on energy-saving opportunities in a pulp mill
Artikel i vetenskaplig tidskrift, 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

Industriella energisystem och -tekniker

Thore Berntsson

Industriella energisystem och -tekniker

Journal of Cleaner Production

0959-6526 (ISSN)

Vol. 18 9 935-943


Kemiska processer



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