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首页> 外文期刊>Journal of Cleaner Production >Applicability of fine industrial metallic iron-rich waste powders for hydrothermal production of hydrogen gas: The influence of non-ferrous contaminants
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Applicability of fine industrial metallic iron-rich waste powders for hydrothermal production of hydrogen gas: The influence of non-ferrous contaminants

机译：富含工业铁的工业细金属废粉在氢气水热生产中的适用性：有色金属污染物的影响

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摘要

Low to negative cost fine industrial metallic iron-rich waste powders are available in large amounts all over the world and are currently often landfilled. The goal of this paper is to investigate the applicability of such waste powders as raw materials for a recently developed hydrothermal hydrogen gas production method, optimised for pure metallic iron powder and operating at a mild hydrothermal temperature of 160 degrees C for 16 h. The influence of several metallic, oxide and salt compounds of elements (M) that are commonly present in metallic iron-rich powder wastes was systematically investigated for two concentration levels, (M:Fe)(low) and (M:Fe)(high). The kinetics of hydrogen gas formation was measured during reaction and the obtained solid residues were analysed. This work shows that the oxidation of metallic iron particles and the consequent H-2 gas production in the investigated hydrothermal reaction system were inhibited through three main effects by the here studied contaminants, namely passivation of the reaction surface, carbonate precipitation and/or redox effects. On the other side, Ni addition promotes the reaction kinetics and acts as a catalyst. However, an excess of Ni inhibits complete iron oxidation through fast precipitation of Fe3O4 on the metallic iron particle surface, forming a passivation layer.
机译：低价至负价的工业金属富铁废粉可在世界范围内大量购买，目前经常被填埋。本文的目的是研究这种废粉作为原料的适用性，该废粉作为最近开发的水热氢气生产方法的原料，该方法已针对纯金属铁粉进行了优化，并在160摄氏度的温和水热温度下运行16小时。系统地研究了两种浓度水平下（M：Fe）（低）和（M：Fe）（高）常见于富含金属铁的粉末废物中几种元素（M）的金属，氧化物和盐化合物的影响）。在反应过程中测量氢气形成的动力学，并分析获得的固体残余物。这项工作表明，在本文研究的水热反应系统中，金属铁颗粒的氧化和随之产生的H-2气体的产生受到以下三种主要污染物的抑制，即，反应表面的钝化，碳酸盐沉淀和/或氧化还原效应。 。另一方面，Ni的添加促进反应动力学并充当催化剂。然而，过量的Ni通过Fe 3 O 4在金属铁颗粒表面上的快速沉淀而抑制了铁的完全氧化，从而形成钝化层。

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  • 来源
    《Journal of Cleaner Production》 |2018年第10期|674-686|共13页
  • 作者

    Michiels Koen; Haesen Alexander; Meynen Vera; Spooren Jeroen;

  • 作者单位

    VITO NV, Flemish Inst Technol Res, Sustainable Mat Management, Waste Recycling Technol, Boeretang 200, B-2400 Mol, Belgium;

    VITO NV, Flemish Inst Technol Res, Sustainable Mat Management, Waste Recycling Technol, Boeretang 200, B-2400 Mol, Belgium;

    VITO NV, Flemish Inst Technol Res, Sustainable Mat Management, Waste Recycling Technol, Boeretang 200, B-2400 Mol, Belgium;

    VITO NV, Flemish Inst Technol Res, Sustainable Mat Management, Waste Recycling Technol, Boeretang 200, B-2400 Mol, Belgium;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hydrogen production; Iron-rich waste; Hydrothermal synthesis; Recycling;

    机译：制氢;富铁废料;水热合成;回收利用;

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