This study analyzed the techno‐economic feasibility of a biomass conversion process enabled by high‐solid loading deep eutectic solvent (DES) pretreatment for the co‐production of 2,3‐butanediol (BDO), furfural, and technical lignin. Aspen plus was used for process simulation; economic analysis models were developed to evaluate commercial potential; sensitivity analysis was carried out to evaluate the effects of key parameters on the production cost of 2,3‐BDO; and Monte‐Carlo simulation was used for uncertainty analysis. Two cases of high‐solid loading pretreatment (20% versus 27%) for DES pretreatment were compared. The process simulation results indicate that 78–79% of cellulose, 63–70% of xylan, and 40–44% of lignin in raw switchgrass are converted into 2,3‐BDO, furfural, and technical lignin, respectively. The minimum 2,3‐BDO selling price (MBSP) of these two cases is estimated to be 1703–1736 $ ton⁻¹, which is about half of the current 2,3‐BDO market price. Sensitivity analyses show that the prices and recycle ratios of acetone and methyl isobutyl ketone (MIBK) have larger impacts on the MBSP, which indicates that further technical improvement should focus on reducing their consumption. The uncertainty analysis indicates that 20 and 27% solid loading systems have similar confident intervals, with 90% confidence interval of MBSP ranging from 1450–1990 $ ton⁻¹. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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基于深共熔溶剂预处理的生物质加工联产2,3-丁二醇，糠醛和木质素技术的技术经济分析

这项研究分析了高固含量深共熔溶剂（DES）预处理联合生产2,3-丁二醇（BDO），糠醛和木质素技术在生物量转化过程中的技术经济可行性。Aspen plus用于过程仿真；开发经济分析模型以评估商业潜力；进行敏感性分析以评估关键参数对2,3-BDO生产成本的影响；蒙特卡罗模拟用于不确定性分析。比较了DES预处理的两个高固体负荷预处理案例（20％对27％）。过程模拟结果表明，原始柳枝gra中的纤维素的78-79％，木聚糖的63-70％和木质素40-44％分别转化为2,3-BDO，糠醛和工业木质素。最低2^-1，大约是当前2,3-BDO市场价格的一半。敏感性分析表明，丙酮和甲基异丁基酮（MIBK）的价格和回收率对MBSP的影响较大，这表明进一步的技术改进应着重于减少其消耗。不确定性分析表明，20％和27％的固体加载系统具有相似的置信区间，MBSP的90％置信区间为1450–1990 $吨^-1。©2020年化学工业协会和John Wiley＆Sons，Ltd