Ethanol from lignocellulosic biomass: techno-economic performance in short-, middle- and long-term
Ethanol from lignocellulosic biomass: techno-economic performance in short-, middle- and long-term
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DOI：
10.1016/j.biombioe.2004.09.002
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发表时间：
2005-01-01
影响因子：
6
通讯作者：
Faaij, APC
中科院分区：
文献类型：
--
作者：
Hamelinck, CN;van Hooijdonk, G;Faaij, APC
评估了从木质纤维素生物质中生产乙醇的水解发酵技术的现状，以及开发技术。定义了短期、中期和长期的有前途的转换概念。对其技术性能进行了分析，并将分析结果用于经济评价。目前可用的技术是基于稀酸水解，从生物质到乙醇的效率约为35%。利用不可发酵的木质素发电，整体效率约为60%。预处理的改进和生物技术的进步，特别是通过工艺组合，可以使乙醇效率达到48%，整体工艺效率达到68%。我们估计当前的投资成本为2.1欧元/千瓦（400兆瓦时）（即名义上2000兆瓦/天的干电输入）。未来的技术在5倍大的工厂（2gw (HHV)）中可能需要900欧元/kW（HHV）的投资。更高的水解发酵效率、更低的特定资本投资、规模的增加和更便宜的生物质原料成本（从3欧元/GJ（HHV）到2欧元/GJ(HHV)）的综合效应，可以使乙醇生产成本在未来5年内从22欧元/GJ(HHV)，在10-15年的时间尺度上降至13欧元/GJ，并在20年或更长时间内降至8.7欧元/GJ。(c) 2004年Elsevier Ltd出版
The state of the art of hydrolysis-fermentation technologies to produce ethanol from lignocellulosic biomass, as well as developing technologies, is evaluated. Promising conversion concepts for the short-, middle- and long-term are defined. Their technical performance was analysed, and results were used for economic evaluations. The current available technology, which is based on dilute acid hydrolysis, has about 35% efficiency (HHV) from biomass to ethanol. The overall efficiency, with electricity co-produced from the not fermentable lignin, is about 60%. Improvements in pre-treatment and advances in biotechnology, especially through process combinations can bring the ethanol efficiency to 48% and the overall process efficiency to 68%. We estimate current investment costs at 2.1 keuro/kW(HHV) (at 400 MWHHV input, i.e. a nominal 2000 torme dry/day input). A future technology in a 5 times larger plant (2 GW(HHV)) could have investments of 900 keuro/kW(HHv). A combined effect of higher hydrolysis-fermentation efficiency, lower specific capital investments, increase of scale and cheaper biomass feedstock costs (from 3 to 2euro/GJ(HHV)), could bring the ethanol production costs from 22 euro/GJ(HHV) in the next 5 years, to 13 euro/GJ over the 10-15 year time scale, and down to 8.7 euro/GJ in 20 or more years. (c) 2004 Published by Elsevier Ltd.