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Catalytic conversion of waste biomass by hydrothermal treatment

机译：水热处理催化转化废生物质

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摘要

The purpose of the work presented here is the production of liquid biofuels from wet organic waste matter in a continuous one-step catalytic process under hydrothermal conditions. The catalytic reaction of wet organic matter at near-critical water conditions (T> 300 ℃, p > 22.1 MPa) is used to produce a mixture of combustible organics which can be used as liquid biofuel. In order to achieve a good product quality in a continuous one-step process, two catalysts were applied, a homogeneous potassium carbonate catalyst and a heterogeneous ZrO_2 catalyst. In addition, the reaction mixture was recirculated. The continuous flow of concentrated waste biomass feed at low flow rates and recirculation of the hot reaction mixture were the most challenging obstacles to overcome. The scale of the plant (0.11 reactor volume) allowed for a variation of the feed, reaction temperature, and recirculation rate in order to optimise the process conditions. Still, the product quantity obtained was sufficient to perform a analytical characterisation. The experimental results confirmed the feasibility of the process. Hydrothermal treatment of waste biomass, after dewatering, resulted in a biocrude oil of high calorific value.
机译：本文介绍的工作目的是在水热条件下，通过连续的一步催化工艺，从湿有机废物中生产液体生物燃料。湿有机物在接近临界水的条件下（T> 300℃，p> 22.1 MPa）的催化反应用于生成可燃有机物的混合物，可用作液体生物燃料。为了在连续的一步法中获得良好的产品质量，使用了两种催化剂，均相碳酸钾催化剂和多相ZrO_2催化剂。另外，使反应混合物再循环。浓缩废生物质进料在低流速下的连续流动以及热反应混合物的再循环是要克服的最具挑战性的障碍。工厂规模（反应器体积为0.11）允许进料，反应温度和再循环速率的变化，以优化工艺条件。尽管如此，获得的产品数量足以进行分析表征。实验结果证实了该方法的可行性。废物生物质经过水热处理后，经过脱水处理，产生了具有高热值的生物原油。

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  • 来源
    《Fuel》 |2011年第2期|p.555-562|共8页
  • 作者

    Alexander Hammerschmidt; Nikolaos Boukis; Elena Hauer; Ulrich Galla; Eckhard Dinjus; BerndHitzmann; Tommy Larsen; Sune D. Nygaard;

  • 作者单位

    ITC-CFV, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany,lnstitut fuer Technische Chemie, D-30167 Leibniz Universitaet Hannover, Germany;

    ITC-CFV, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany;

    ITC-CFV, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany;

    ITC-CFV, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany;

    ITC-CFV, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany;

    lnstitut fuer Technische Chemie, D-30167 Leibniz Universitaet Hannover, Germany;

    Grundfos Microrefinery A/S, DK-8850 Bjerringbro, Denmark;

    Danish Technological Institute, DK-8000 Arhus, Denmark;

  • 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

    wastewater treatment; thermochemical conversion; allothermal conversion; biofuel;

    机译：废水处理;热化学转化地热转化生物燃料;

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