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Investigation of the feasibility of underground coal gasification in North Dakota, United States

机译：美国北达科他州地下煤气化可行性的调查

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摘要

Underground coal gasification (UCG) is a promising technology that has the potential to recover currently-unmineable coal resources. The technical feasibility and economic success of a UCG project is highly site specific. Any risks associated with UCG, such as subsidence, groundwater contamination, and syngas quality, should be sufficiently evaluated through a feasibility study. This paper presents a four-year UCG feasibility study utilizing lignite seams in North Dakota, United States. Four wells were drilled through the lignite seams at a selected site, and lignite and strata cores were recovered. A geological model of the formation was built, coal and rock properties were analyzed, and field hydrogeological tests and laboratory gasification tests were performed. This work provided valuable insights in rock mechanics, hydrogeology, and coal properties. The study results show that the selected site is suitable for development of a UCG plant because there are minimal induced subsidence risks, there is hydrological isolation from major aquifers and the coal produces desirable syngas quality for liquid fuel production. Methodologies developed in this study will benefit the design, optimization and management of the UCG process. (C) 2016 Elsevier Ltd. All rights reserved.
机译：地下煤气化（UCG）是一项很有前途的技术，具有回收目前无法开采的煤炭资源的潜力。 UCG项目的技术可行性和经济成功与地点有关。与UCG相关的任何风险，例如沉陷，地下水污染和合成气质量，都应通过可行性研究进行充分评估。本文提出了一项为期四年的UCG可行性研究，该研究利用了美国北达科他州的褐煤煤层。在选定的地点通过褐煤接缝钻了四个井，并回收了褐煤和地层岩心。建立了地层的地质模型，分析了煤和岩石的性质，并进行了现场水文地质测试和实验室气化测试。这项工作为岩石力学，水文地质和煤炭特性提供了宝贵的见解。研究结果表明，所选地点适合于UCG工厂的开发，因为它具有最小的诱发下沉风险，与主要含水层的水文隔离以及煤为液体燃料生产提供了理想的合成气质量。本研究开发的方法将有利于UCG流程的设计，优化和管理。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2016年第4期|95-103|共9页
  • 作者

    Pei Peng; Nasah Junior; Solc Jaroslav; Korom Scott F.; Laudal Daniel; Barse Kirtipal;

  • 作者单位

    Univ N Dakota, Inst Energy Studies, 243 Centennial Dr,Upson 2 Room 366, Grand Forks, ND 58203 USA;

    Univ N Dakota, Inst Energy Studies, 243 Centennial Dr,Upson 2 Room 366, Grand Forks, ND 58203 USA;

    Univ N Dakota, Inst Energy Studies, 243 Centennial Dr,Upson 2 Room 366, Grand Forks, ND 58203 USA;

    Barr Engn Co, 234 West Century Ave, Bismarck, ND 58503 USA;

    Univ N Dakota, Inst Energy Studies, 243 Centennial Dr,Upson 2 Room 366, Grand Forks, ND 58203 USA;

    Univ N Dakota, Inst Energy Studies, 243 Centennial Dr,Upson 2 Room 366, Grand Forks, ND 58203 USA;

  • 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

    Underground coal gasification; Lignite; Gasification test; Hydrogeology; Geomechanical properties;

    机译：地下煤气化褐煤气化试验水文地质地球力学性质;

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