Department of Energy Technology, Aalborg University, Pontoppidanstraede 111, 9220 Aalborg, Denmark.
Department of Energy Technology, Aalborg University, Pontoppidanstraede 111, 9220 Aalborg, Denmark.
Bioresour Technol. 2017 May;231:116-123. doi: 10.1016/j.biortech.2017.01.056. Epub 2017 Jan 30.
A major challenge for the implementation of hydrothermal liquefaction (HTL) as a continuous process is the formulation of lignocellulosic feedstock, which is prone to phase separation into water and biomass parts when pressurized. One approach to remedy such phase separation is to reduce the dry matter content; however, as this approach is detrimental to process cost efficiency, designing an appropriate pretreatment step to ensure pumpability at high dry matter content is preferable. This paper evaluated the effect of various pretreatment methods on product distribution and composition resulting from the HTL of willow and proposes short rotation coppice as an alternative biomass feedstock for biofuels production. Alkaline-thermal pretreatment, besides making high dry matter pumpable feedstock slurries, also led to an increase in the production of the bio-crude product with an oxygen content lower than 8wt% and a higher concentration of aromatics and phenolic compounds.
将水热液化（HTL）作为连续工艺实施的主要挑战是木质纤维素原料的配方，当加压时，木质纤维素原料容易分成水相和生物质相。一种补救这种相分离的方法是降低干物质含量；然而，由于这种方法不利于工艺成本效率，因此设计适当的预处理步骤以确保在高干物质含量下可泵送是更好的选择。本文评估了各种预处理方法对柳树 HTL 产物分布和组成的影响，并提出了短轮伐期薪炭林作为生物燃料生产的替代生物质原料。碱性热预处理不仅可以制备高干物质可泵送的原料浆料，而且还可以增加生物原油的产量，其含氧量低于 8wt%，芳烃和酚类化合物的浓度更高。
