...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & fuels >Coal-Direct Chemical Looping Gasification for Hydrogen Production: Reactor Modeling and Process Simulation
【24h】

Coal-Direct Chemical Looping Gasification for Hydrogen Production: Reactor Modeling and Process Simulation

机译：煤炭直接化学循环气化制氢技术：反应器建模和过程模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A novel process scheme for hydrogen production from coal with in situ CO_2 capture, known as the coal-direct chemical looping (CDCL) gasification process, is discussed in this article. The CDCL process utilizes an iron oxide based oxygen carrier as a chemical looping medium to indirectly gasify coal into separate streams of H_2 and CO_2. ASPEN Plus reactor simulation models based on both thermodynamic equilibrium limitations and kinetic limitations are developed to analyze individual CDCL reactors. Process simulations are subsequently performed to estimate the performance of the CDCL process under various mass and energy management schemes. Reactor modeling results indicate that a moving bed reducer can effectively convert coal while reducing the oxygen carrier. The reduced oxygen carrier can in turn be oxidized by steam to produce hydrogen in a moving bed oxidizer. The fates of pollutants as well as the effects of various process operating parameters such as carbon and iron oxide conversions are also evaluated Process simulation indicates that, even under a set of conservative assumptions, the CDCL process has the potential to convert coal to hydrogen at a thermal efficiency of nearly 78% (HHV) while capturing >90% CO_2, which is 30% higher, on a relative basis, than conventional hydrogen generation processes.
机译：本文讨论了一种通过原位CO_2捕集煤制氢的新工艺方案，即煤直接化学循环（CDCL）气化工艺。 CDCL工艺利用基于氧化铁的氧气载体作为化学回路介质，将煤间接气化为H_2和CO_2的分离物流。开发了基于热力学平衡限制和动力学限制的ASPEN Plus反应器模拟模型来分析单个CDCL反应器。随后执行过程模拟以估计CDCL过程在各种质量和能量管理方案下的性能。反应器建模结果表明，移动床还原剂可以有效地转化煤，同时还原氧气载体。还原的氧载体可以依次被蒸汽氧化以在移动床氧化剂中产生氢。还评估了污染物的命运以及各种工艺操作参数（如碳和铁的转化率）的影响。工艺模拟表明，即使在一系列保守的假设下，CDCL工艺也有可能在一定温度下将煤转化为氢气。热效率接近78％（HHV），同时捕获> 90％的CO_2，相对而言，比传统的制氢工艺高30％。

著录项

  • 来源
    《Energy & fuels》 |2012年第mayajuna期|p.3680-3690|共11页
  • 作者

    Liang Zeng; Feng He; Faruring Li; Liang-Shih Fan;

  • 作者单位

    Department of chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210,United States;

    Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States;

    Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States;

    Department of chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210,United States;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号