Scandinavian Hardwood Biorefinery Using 'Near-Neutral' Hemicelluloses Pre-extraction- Energy Efficiency Measures

摘要

While in a conventional mill, the hemicelluloses and lignin fraction of the wood isrnburned in the recovery boiler to produce steam, in a biorefinery it can be used tornproduce added value products. In this paper, a comprehensive heat integration study forrnan average Scandinavian kraft model mill, as well as for a hemicelluloses extractionrnprocess with further utilization for ethanol production, is performed. The results showrnthat when the total integration of the hemicelluloses utilization process with the mill isrnconsidered, the integrated biorefinery could become self-sufficient in terms of steam.