A systems approach to the reduction of oil demand in a Swedish board mill

The possibility of reducing oil demand in the board mill at Skoghall, operated by Stora Enso, is analysed from a systems perspective. Identification of different key factors influencing the potential for reducing oil demand includes measures within the mill, e.g. steam reduction measures, and boundary conditions, such as electricity prices. Different key factors influence each other to different extents, indicating that an analysis concerning interactions between the different factors is also vital. A survey of these factors influencing oil demand has been carried out and a sensitivity analysis, including a factorial design method, has been applied to the subject.