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Recent Advances in the Development of the Hybrid Sulfur Process for Hydrogen Production

机译：混合制氢工艺制氢发展的最新进展

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摘要

Thermochemical processes are being developed to provide global-scale quantities of hydrogen. A variant on sulfur-based thermochemical cycles is the Hybrid Sulfur (HyS) Process, which uses a sulfur dioxide depolarized electrolyzer (SDE) to produce the hydrogen. In the HyS Process, sulfur dioxide is oxidized in the presence of water at the electrolyzer anode to produce sulfuric acid and protons. The protons are transported through a cation-exchange membrane electrolyte to the cathode and are reduced to form hydrogen. In the second stage of the process, the sulfuric acid by-product from the electrolyzer is thermally decomposed at high temperature to produce sulfur dioxide and oxygen. The two gases are separated and the sulfur dioxide recycled to the electrolyzer for oxidation. The Savannah River National Laboratory (SRNL) has been exploring a fuel-cell design concept for the SDE using an anolyte feed comprised of concentrated sulfuric acid saturated with sulfur dioxide. The advantages of this design concept include high electrochemical efficiency and small footprint compared to a parallel-plate electrolyzer design. This paper will provide a summary of recent advances in the development of the SDE for the HyS process.
机译：正在开发热化学工艺以提供全球规模的氢气。基于硫的热化学循环的一种变体是混合硫（HyS）工艺，该工艺使用二氧化硫去极化电解器（SDE）产生氢气。在HyS工艺中，二氧化硫在水的存在下在电解阳极处被氧化，生成硫酸和质子。质子通过阳离子交换膜电解质传输到阴极并被还原形成氢。在该方法的第二阶段，来自电解器的硫酸副产物在高温下热分解以产生二氧化硫和氧气。分离出两种气体，将二氧化硫再循环至电解器进行氧化。萨凡纳河国家实验室（SRNL）一直在探索SDE的燃料电池设计概念，使用的阳极电解液进料包括浓硫酸和二氧化硫。与平行板电解器设计相比，此设计概念的优点包括较高的电化学效率和较小的占地面积。本文将概述HyS流程SDE开发的最新进展。

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  • 来源
    《Nuclear energy and the environment》|2009年|p.141-154|共14页
  • 会议地点 Washington DC(US);Washington DC(US)
  • 作者

    H. R. Colon-Mercado; M. C. Elvington; J. L. Steimke; T. J. Steeper; D. T. Herman; M. B. Gorensek; W. A. Summers; D. T. Hobbs;

  • 作者单位

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

    Savannah River National Laboratory, Savannah River Nuclear Solutions, LLC, Aiken, SC 29808;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 核能工业;
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