Process systems engineering studies for catalytic production of bio-based platform molecules from lignocellulosic biomass
Process systems engineering studies for catalytic production of bio-based platform molecules from lignocellulosic biomass
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DOI：
10.1016/j.enconman.2017.02.027
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发表时间：
2017-04
影响因子：
10.4
通讯作者：
Jee-hoon Han
中科院分区：
文献类型：
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作者：
Jee-hoon Han
以木质纤维生物质的半纤维素(C5)、纤维素(C6)和木质素级分为原料，采用集成催化转化策略，研究了生物质平台分子(乙酰丙酸(LA)、糠醛(FF)和丙基愈创木酚(PG))的合成方法。基于该策略的商业规模工艺从稀溶质(1.3-30.0wt.%固体)中产生高数值碳产率(总产率：35.2%；C6-LA：20.4%，C5-FF：69.2%，木质素-PG：13.3%)，但这些分子的高回收率需要低能量需求的高效分离系统。热交换器网络显著降低了该过程的总能量需求。一项经济分析表明，尽管使用了负面的经济参数，作为最高附加值产品的LA(使用700吨/年玉米秸秆/年生产42.3吨/年LA)的最低售价为1707美元/吨，而且该系统在现有生产方法下具有成本竞争力。
This work presents a process-system engineering study of an integrated catalytic conversion strategy to produce bio-based platform molecules (levulinic acid (LA), furfural (FF), and propyl guaiacol (PG)) from hemicellulose (C5), cellulose (C6), and lignin fractions of lignocellulosic biomass. A commercial-scale process based on the strategy produces high numerical carbon yields (overall yields: 35.2%; C6-to-LA: 20.4%, C5-to-FF: 69.2%, and Lignin-to-PG: 13.3%) from a dilute concentration of solute (1.3–30.0 wt.% solids), but a high recovery of these molecules requires an efficient separation system with low energy requirement. A heat exchanger network significantly reduced the total energy requirements of the process. An economic analysis showed that the minimum selling price of LA as the highest value-added product (42.3 × 103t of LA/y using 700 × 103dry t/y of corn stover) is US$1707/t despite using negative economic parameters, and that this system can be cost-competitive with current production approaches.