• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Frontiers of earth science >Biogenic gas generation effects on anthracite molecular structure and pore structure
【24h】

Biogenic gas generation effects on anthracite molecular structure and pore structure

机译：生物燃气产生对无烟煤分子结构和孔隙结构的影响

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

This study carries out a simulated experiment of biogenic gas generation and studies the effects of gas generation on the pore structure and molecular structure of anthracite by mercury intrusion porosimetry, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results show that methanogenic bacteria can produce biogenic gas from anthracite. CO2 and CH4 are the main components of the generated biogas. After generation, some micropores (10 nm) and transitional pores (10-100 nm) in the coal samples transform into large pores. In the high-pressure stage (pressure100 MPa) of the mercury intrusion test, the specific surface area decreases by 19.79% compared with that of raw coal, and the pore volume increases by 7.25% in total. Microbial action on the molecular structure causes changes in the pore reconstruction. The FT-IR data show that the side chains and hydroxyl groups of the coal molecular structure in coal are easily metabolized by methanogenic bacteria and partially oxidized to form carboxylic acids. In addition, based on the XRD data, the aromatic lamellar structure in the coal is changed by microorganisms; it decreases in lateral size (La) and stacking thickness (Lc). This study enriches the theory of biogenic coalbed gas generation and provides a pathway for enhancing the permeability of high-rank coal reservoirs.
机译：本研究执行生物生成的模拟实验，并研究气体侵入孔隙瘤，X射线衍射（XRD）和傅里叶变换红外光谱（FT-IR）对气体产生对烟灰结构和分子结构的影响。结果表明，甲状腺细菌可以从无烟煤产生生物气体。 CO2和CH4是产生的沼气的主要成分。发生后，煤样中的一些微孔（＆ 10nm）和过渡孔（10-100nm）变成大孔。在汞侵入试验的高压阶段（压力＆ 100MPa）中，与原煤相比，比表面积减少了19.79％，孔口总量增加了7.25％。微生物作用对分子结构导致孔隙重建的变化。 FT-IR数据表明，煤中煤分子结构的侧链和羟基通过甲状腺细菌容易地代谢，部分氧化形成羧酸。另外，基于XRD数据，煤中的芳族层状结构通过微生物改变;它在横向尺寸（LA）和堆叠厚度（LC）下降。本研究丰富了生物煤层气的理论，为提高高级煤储层的渗透性提供了一种途径。

著录项

  • 来源
    《Frontiers of earth science》 |2021年第2期|272-282|共11页
  • 作者

    Wang Aikuan; Shao Pei; Wang Qinghui;

  • 作者单位

    China Univ Min & Technol Key Lab Coalbed Methane Resources & Reservoir For Minist Educ Xuzhou 221008 Jiangsu Peoples R China|China Univ Min & Technol Sch Resources & Geosci Xuzhou 221116 Jiangsu Peoples R China;

    Shangqiu Normal Univ Dept Surveying & Planning Shangqiu 476000 Peoples R China;

    China Univ Min & Technol Key Lab Coalbed Methane Resources & Reservoir For Minist Educ Xuzhou 221008 Jiangsu Peoples R China|China Univ Min & Technol Sch Resources & Geosci Xuzhou 221116 Jiangsu Peoples R China;

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

    biogenic gas; anthracite; pore structure; molecular structure;

    机译：生物气体;无烟煤;孔结构;分子结构;

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