The sugar yield achieved during pretreatment of lignocelluloses has an impact on the economic outcome of biorefineries. Chemical and physiochemical pretreatment methods were evaluated and compared to determine the most favorable pretreatment method for the commercial co‐production of succinic acid and electricity in a sugarcane lignocellulosic biorefinery. Nine methods were identified and simulated in Aspen Plus®. All the pretreatment methods were profitable except organosolv and wet oxidation. Steam explosion (STEX), sulfur dioxide (SO₂), catalyzed STEX, and ammonia fibre expansion (AFEX™) resulted in the highest succinic acid yields, with 45.7, 43.5 and 33.4 kg succinic acid per 100 tonnes of dry feedstock, respectively, and they are recommended for commercial application. However, due to the high cost of enzymatic hydrolysis (46.23 million US$), the AFEX™ pretreatment method was the most expensive scenario at 385.7 million US$ total capital cost with an internal rate of return (IRR) of 22.81%. This may be compared with 384.2 million US$ for STEX pretreatment, which resulted in the most profitable biorefinery scenario with an IRR of 28.04%. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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使用不同的预处理方法，对生物精炼厂中甘蔗渣和废木质纤维素的琥珀酸和电力联产进行经济评估和比较：稀酸（H2SO4），碱（NaOH），有机溶剂，氨纤维膨胀（AFEX™），蒸汽爆炸（STEX）和湿式氧化

在木质纤维素预处理期间获得的糖产量对生物精炼厂的经济结果产生影响。对化学和物理化学预处理方法进行了评估，并进行了比较，以确定在甘蔗木质纤维素生物精炼厂中商业联合生产琥珀酸和电力的最有利预处理方法。在AspenPlus®中识别并仿真了九种方法。除有机溶剂和湿法氧化外，所有预处理方法均有利可图。蒸汽爆炸（STEX），二氧化硫（SO ₂），催化STEX和氨纤维膨胀（AFEX™）导致琥珀酸收率最高，每100吨干原料分别有45.7、43.5和33.4 kg琥珀酸，建议将其商业应用。但是，由于酶促水解的高成本（4,623万美元），AFEX™预处理方法是最昂贵的方案，总资本成本为3.587亿美元，内部收益率（IRR）为22.81％。相比之下，STEX预处理为3.842亿美元，这是最有利可图的生物炼制方案，内部收益率为28.04％。©2019年化学工业协会和John Wiley＆Sons，Ltd