The 2010 Reference Mill for Kraft Market Pulp, 2011 PEERS Conference

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In a joint project by Innventia and ÅF, state-of-the-art ‘reference mills’ have been defined including detailed material and energy balances. The main purpose of the current study was to assess the technical changes in pulp production that have occurred in recent years, but also to show differences between processing of various wood species (pine, birch and eucalyptus were considered). These reference mills can be used for benchmarking and as a basis for evaluation of new technology options. The design of each mill is based on best available and commercially proven technology. The softwood mill largely concerns conditions representative of the Nordic countries and the US Southeast, while the eucalyptus mill is representative of mills in South America and southwestern Europe. In general, the key process data used in this study are conservative and should not exclude any of the major pulp mill equipment suppliers. Results show process steam consumption in the range of 7.6-8.8 GJ/ADt. In all reference mills there is at least an equal amount of steam available for electric power generation, and the excess electricity that can be sold ranges from 670 to 870 kWh/ADt.