THESIS
Pinch
analysis of Nynas refinery - an energy efficiency study
Anna Gunnarsson and Carin Magnusson
Master's Thesis
Department of Energy and Environment, Division of Heat and Power Technology,
CHALMERS UNIVERSITY OF TECHNOLOGY, Göteborg, Sweden 2011
Abstract:
The
potential for energy savings due to energy efficiency measures can be large in
industrial processes, especially in energy intensive businesses such as the
refinery industry. In this project the oil refinery Nynas AB, situated near the
harbour in Gothenburg, is studied. The plant is specialized in producing
bitumen and naphthenic oils, mainly for the Nordic market. The objective of
this thesis is to investigate opportunities to increase process energy
efficiency at the refinery Nynas AB.
The main aim of the project is to locate energy savings by use of
pinch analysis and to evaluate these. The primary focus of this study is the distillation
section of the plant due to its large energy usage, 60 % of the total energy
demand at the plant. Within the distillation area two distillation columns and
a furnace are located. The present energy demand in this area is 6.5 MW of
heating and 5.0 MW of cooling. The results of the pinch analysis indicate that
the theoretical minimum energy demand for the plant is 3.7 MW heating and 3.1
MW cooling.
Free Full Text Source: http://publications.lib.chalmers.se/cpl/record/index.xsql?pubid=142245
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