Journal
APPLIED ENERGY
Volume 104, Issue -, Pages 517-526Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2012.11.054
Keywords
Biorefinery; Bioethanol; Pinch analysis; Arabinoxylan
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Funding
- National Council of Science and Technology (CONACYT) of Mexico
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A biorefinery involving internal stream reuse and recycling (including products and co-products) should result in better biomass resource utilisation, leading to a system with increased efficiency, flexibility, profitability and sustainability. To benefit from those advantages, process integration methodologies need to be applied to understand, analyse and design highly integrated biorefineries. A bioethanol integration approach based on mass pinch analysis is presented in this work for the analysis and design of product exchange networks formed in biorefinery pathways featuring a set of processing units (sources and demands) producing or utilising bioethanol. The method is useful to identify system debottleneck opportunities and alternatives for bioethanol network integration that improve utilisation efficiency in biorefineries with added value co-products. This is demonstrated by a case study using a biorefinery producing bioethanol from wheat with arabinoxylan (AX) co-production using bioethanol for AX precipitation. The final integrated bioethanol network design allowed the reduction of bioethanol product utilisation by 94%, avoiding significant revenue losses. (C) 2012 Elsevier Ltd. All rights reserved.
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