KUITU - Energy-efficient mechanical pulping. Final report on the energy research programme 1988-1992

摘要

The most important aim of the Kuitu programme was to improve the competitiveness of the paper industry and paper machinery manufacturers trough improvements in energy technology. Three targets were to be achieved by 1993: to find ways of reducing specific energy consumption in existing mechanical pulping processes by 10-20 % through process modifications; to show the electricity-saving potential of several new types of pulping process; to establish the theoretical potential for energy saving in mechanical pulping. The main aims of the Kuitu programme have been achieved. The results of the Kuitu programme suggest that much of the increase in the energy requirement of mechanical pulping can be avoided. The technology for achieving this in groundwood and TMP processes is also starting to take shape. The necessary measures will, however, require both capital investment and, in many cases, further development work. This means that putting the results into practice will take time. Although it is difficult to give exact figures for the impact of the Kuitu programme's results on energy consumption, the coordination project suggests that applying the results of the Kuitu programme projects will cut the growth in total electricity consumption by about 5 percentage points. According to the coordination project, the electricity required for mechanical pulping will grow by 15-20 % over the next 5-6 years. Without the findings of the Kuitu programme, this growth would be 20-25 %. This corresponds to an annual saving of 0.3-0.4 TWh of energy, equivalent to FIM 50-70 million. Electricity output could be cut by 40-60 MWk