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首页> 外文期刊>Energy Conversion & Management >Hydrogen production through chemical looping and sorption-enhanced reforming of olive mill wastewater: Thermodynamic and energy efficiency analysis
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Hydrogen production through chemical looping and sorption-enhanced reforming of olive mill wastewater: Thermodynamic and energy efficiency analysis

机译：通过化学循环和吸附增强的橄榄磨废水改性氢气生产：热力学和能效分析

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摘要

A thermodynamic study was performed aiming to compare the performance of different reactor configurations, namely traditional (TR), sorption-enhanced (SER), chemical looping (CLR) and chemical-looping sorptionenhanced reforming (SE-CLR) for the steam reforming of olive mill wastewater (OMW), a byproduct of olive oil production, to produce green hydrogen. This analysis was accompanied by an energy balance in order to maximize energy efficiency and achieve autothermal operating conditions. The parameters assessed in the thermodynamic study were temperature (250-900 degrees C) and steam-to-carbon molar ratio (0.15-3.0), but also, for the sorption-enhanced process, the ratio between the CO2 sorbent and the OMW (0-8.0), and for the chemical looping process the ratio between the oxygen carrier and the OMW (0-6.0). The SER showed higher hydrogen yield for the range of conditions tested than both the traditional and chemical looping reformers, with a hydrogen purity above 99%. By combining sorption-enhanced with chemical looping reforming, an H2 purity above 99% and a yield higher than that for chemical looping by itself were observed. For the CLR and SE-CLR configurations, a system in which the energy released is higher than the required was achieved by varying the amount of oxygen carrier, enabling operating under autothermal conditions. A pinch analysis was performed for the CLR and the SE-CLR to quantify the possible heat integration in a realistic system. It was found that CLR can be 71% self-sufficient, whilst SE-CLR can be 55% self-sufficient.
机译：进行了热力学研究，旨在比较不同反应器配置的性能，即传统（TR），吸附增强（SER），化学循环（CLR）和化学循环索富酸型改造（SE-CLR）的液体重整轧机废水（OMW），橄榄油生产的副产品，生产绿色氢气。该分析伴随着能量平衡，以最大限度地提高能源效率并实现自动运行条件。在热力学研究中评估的参数是温度（250-900℃）和蒸汽至碳摩尔比（0.15-3.0），而且还用于吸附增强过程，CO2吸附剂和OMW之间的比率（ 0-8.0），以及化学环路处理氧载体和OMW之间的比率（0-6.0）。 SER显示出比传统和化学环形重整器经测试的条件范围更高的氢产率，氢纯度高于99％。通过将吸附增强与化学环化重整相结合，观察到高于99％以上的H 2纯度，并且产率高于其自身的化学环循环的产率。对于CLR和SE-CLR配置，通过改变氧载体的量来实现释放能量的系统，使得在自热条件下进行操作。对CLR和SE-CLR进行了捏合分析，以量化现实系统中的可能热集成。结果发现，CLR可以是71％的自给自足，虽然SE-CLR可以是55％的自给自足。

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  • 来源
    《Energy Conversion & Management》 |2021年第6期|114146.1-114146.14|共14页
  • 作者

    Cerqueira Pedro; Soria M. A.; Madeira Luis M.;

  • 作者单位

    Univ Porto Fac Engn LEPABE Lab Proc Engn Environm Biotechnol & Energy Rua Dr Roberto Frias P-4200465 Porto Portugal;

    Univ Porto Fac Engn LEPABE Lab Proc Engn Environm Biotechnol & Energy Rua Dr Roberto Frias P-4200465 Porto Portugal;

    Univ Porto Fac Engn LEPABE Lab Proc Engn Environm Biotechnol & Energy Rua Dr Roberto Frias P-4200465 Porto Portugal;

  • 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

    Chemical looping; Sorption-enhanced; Reforming; Autothermal; Olive mill wastewater;

    机译：化学循环;吸附增强;改革;自动化;橄榄磨废水;

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