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High concentration levulinic acid production from corn stover

机译：玉米秸秆的高浓度乙酰酸生产

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摘要

In this study, a novel approach is presented for high concentration levulinic acid (LA) production from biomass hydrolysate. In this process, saccharified biomass hydrolysate, prepared from acid pretreatment of corn stover, was used as the feed. Previously introduced simultaneous isomerization and reactive extraction (SIRE) and back-extraction (BE) method was implemented to convert glucose from biomass hydrolysate solution to fructose at high yield, 88%, and then fructose was transferred to an acidic aqueous reaction medium. In the acidic aqueous medium, not only fructose was converted at high yield (63 mol%) and facile reaction conditions (95 degrees C and autonomous pressure) to LA, but also the resulting LA was provided at a significant loading of 6.4 wt%. The required energy for LA isolation (95% purity) by evaporation was calculated by Aspen plus simulator software. Results indicated that for high LA concentration (6.4 wt%), required energy (57 400 kJ kg(-1) LA) is 18 times less than in the case where LA loading was 1 wt% (1 043 000 kJ kg(-1) LA). This dramatic reduction in the energy consumption makes the process more cost competitive. The proposed process also benefits from low energy inputs, recyclable streams and catalysts.
机译：在该研究中，提出了一种新的方法，用于从生物质水解产物的高浓度乙酰丙酸（La）产生。在该方法中，使用由酸预处理玉米秸秆的糖化生物质水解产物，用作进料。以前引入的同时异构化和反应性萃取（尺尺）和后萃取（BE）方法，以将来自生物量水解液的葡萄糖转化为高收率，88％，然后将果糖转移到酸性水性反应介质中。在酸性水性介质中，不仅将果糖以高产率（63mol％）（63mol％）和体内反应条件（95℃和自主压力）转化为La，而且得到的La在显着负载下为6.4wt％。通过Aspen Plus Simulator软件计算通过蒸发的La隔离（95％纯度）所需的能量。结果表明，对于高LA浓度（6.4wt％），所需的能量（57 400 kJ kg（-1）la）比La Langess为1wt％的情况下的18倍（1 043 000 kJ kg（-1 ）洛杉矶）。这种急剧减少能耗使得该过程更具成本竞争力。所提出的方法还受益于低能量输入，可回收流的流和催化剂。

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  • 来源
    《RSC Advances》 |2016年第112期|共6页
  • 作者

    Alipour Siamak; Omidvarborna Hamid;

  • 作者单位

    Univ Toledo Dept Chem &

    Environm Engn 2801 W Bancroft St Toledo OH 43606 USA;

    Univ Toledo Dept Civil Engn Toledo OH 43606 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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