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Preliminary investigation on concentrating of acetol from wood vinegar

机译：从木醋中浓缩丙酮醇的初步研究

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摘要

Acetol, as one of the components in biomass pyrolysis liquid, is a high value added compound for medicine synthesis. Benefit may be obtained if acetol can be extracted from the pyrolysis liquid, while the instability of acetol makes the concentrating difficult. In this paper, the concentrating of acetol from wood vinegar is preliminarily investigated, and the conditions of distillation, solvent extraction, and Na_2CO_3 effect on the concentrating result are discussed. Herein the content of acetol can be concentrated from below 4% in the raw wood vinegar to above 60%, and the number of main components reduce from over 20 to 5, while the yield of acetol is still rather low. It was found that in the organic solution distillation process, acetol can be easily concentrated from 1% to above 40%, while a further distillation of the concentrated acetol system was rather hard. The conversion of acetol in the distillation process was probably an important cause to the low yield of acetol, and a lower distillation temperature was advantageous for the concentrating of acetol.
机译：乙炔醇是生物质热解液中的一种成分，是一种高附加值的药物合成化合物。如果可以从热解液中提取丙酮醇，则可以获得益处，而丙酮醇的不稳定性使浓缩变得困难。本文对木醋中丙酮醇的浓缩进行了初步研究，并探讨了蒸馏，溶剂萃取的条件以及Na_2CO_3对浓缩结果的影响。在此，丙酮醇的含量可以从原木醋中的低于4％浓缩至高于60％，并且主要成分的数量从超过20减少至5，而丙酮醇的产率仍然相当低。发现在有机溶液蒸馏过程中，丙酮醇可以容易地从1％浓缩至40％以上，而浓缩丙酮醇体系的进一步蒸馏相当困难。蒸馏过程中丙酮醇的转化可能是导致丙酮醇收率低的重要原因，较低的蒸馏温度有利于丙酮醇的浓缩。

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  • 来源
    《Energy Conversion & Management》 |2010年第2期|346-349|共4页
  • 作者

    Ze Wang; Weigang Lin; Wenli Song; Jianzhong Yao;

  • 作者单位

    State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences. Beijing 100190, China;

    State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences. Beijing 100190, China;

    State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences. Beijing 100190, China;

    State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences. Beijing 100190, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    wood vinegar; pyrolysis liquid; acetol; concentrating;

    机译：木醋热解液丙酮醇专心;

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