期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 2, 页码 624-631出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.07.092
关键词
Process modeling and analysis; Biorefinery; Hemicelluloses pre-extraction; Pulp and paper; Ethanol
资金
- University of Minnesota's Initiative on Renewable Energy and the Environment (IREE)
- University of Minnesota's College of Food, Agricultural and Natural Resource Sciences (CFANS)
Pulp and paper mills represent a major platform to use more effectively an abundant, renewable bioresource - wood. Modification of the modern day pulp mills into integrated forest biorefineries (IFBR) presents an excellent opportunity to produce, in addition to valuable cellulose fiber, co-products including fuel grade ethanol and additional energy, thus resulting in increased revenue streams and profitability and potentially lower the greenhouse gas emissions. A process model to simulate the integrate forest biorefinery manufacturing pulp and other co-products has been developed. This model has been used to compare three integrated biorefinery scenarios: the conventional Kraft pulping process, the pulp mill-based IFBR with hemicelluloses extraction prior to pulping for ethanol production, and the pulp mill-based IFBR with both pre-extracted hemicelluloses and the short fiber for ethanol production. Based on a fixed feedstock throughput of 2000 dry Mg wood/day, results show that the pulp mill-based IFBR with both pre-extracted hemicelluloses and the short fiber cellulose converted to ethanol can produce 0.038 MM m(3) (10.04 MM gal) ethanol per year at a minimum ethanol selling price (MESP) of $491/m(3) ($1.86/gal). The economic feasibility of IFBR can be further improved by using further improvements in the pre-extraction process, other biomass such as corn stover for producing ethanol, and taking advantage of the economies of scale. (C) 2009 Elsevier Ltd. All rights reserved.
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