School of Chemical Engineering, Chonbuk National University, Jeonju 561-756, South Korea.
School of Chemical Engineering, Chonbuk National University, Jeonju 561-756, South Korea.
Bioresour Technol. 2016 Mar;204:1-8. doi: 10.1016/j.biortech.2015.12.075. Epub 2016 Jan 4.
A strategy in which the hemicellulose and cellulose fractions of lignocellulosic biomass are converted separately to jet fuel-range liquid hydrocarbon fuels (butene oligomers) through catalytic processes is developed. Dilute sulfuric acid (SA)-catalyzed pretreatment fractionates the first biomass into cellulose and hemicellulose-derived xylose, and these are then converted separately to levulinic acid (LA) using 2-sec-butylphenol (SBP) and lignin-derived (LD) alkylphenol solvents, respectively. LA is upgraded catalytically to butene oligomers via γ-valerolactone (GVL) and butene intermediates. Separation subsystems are designed to recover the alkylphenol solvents and biomass-derived intermediates (LA and GVL) for combination with the catalytic conversion subsystems of hemicellulose, cellulose, and lignin. In addition, a heat exchanger network (HEN) design is presented to satisfy the energy requirements of the integrated process from combustion of biomass residues (degradation products). Finally, a technoeconomic analysis shows that the proposed process ($3.37/gallon of gasoline) is an economically competitive alternative to current biofuel production approaches.
开发了一种策略，通过催化过程将木质纤维素生物质的半纤维素和纤维素部分分别转化为喷气燃料范围内的液体碳氢燃料（丁烯低聚物）。稀硫酸（SA）催化预处理将生物质分为纤维素和半纤维素衍生的木糖，然后分别使用 2-仲丁基苯酚（SBP）和木质素衍生（LD）烷基苯酚溶剂将其转化为乙酰丙酸（LA）。LA 通过γ-戊内酯（GVL）和丁烯中间体催化升级为丁烯低聚物。设计了分离子系统以回收烷基苯酚溶剂和生物质衍生的中间体（LA 和 GVL），并与半纤维素、纤维素和木质素的催化转化子系统结合。此外，还提出了一个换热器网络（HEN）设计，以满足从生物质残渣（降解产物）燃烧中集成过程的能源需求。最后，技术经济分析表明，与当前的生物燃料生产方法相比，该提议的工艺（$3.37/加仑汽油）是一种具有经济竞争力的替代方案。
