关于甲"固体-液体-气体"转换机制的研究,由煤炭微孔和纳米孔结构的演变控制
Hao Sui1,2, Xijian Li3,4,5, Junjie Cai1,2
1College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China.
Scientific reports
|May 20, 2024
概括
这项研究调查了贵州构造性变形煤 (TDCs),揭示了孔隙结构和甲吸附特性. 这些发现提供了关于复杂的构造性煤矿库中气体储存的见解.
科学领域:
- 地质科学 地质科学
- 石油工程是石油工程中的一个.
- 材料科学 材料科学 材料科学
背景情况:
- 贵州的煤床甲 (CBM) 开采受到复杂的储结构,高气体含量和微孔开发的阻碍.
- 构造变形显著影响煤炭储库的孔隙结构和气体储存能力.
研究的目的:
- 评估贵州构造性变形煤 (TDCs) 的孔隙结构和甲吸附能力.
- 为了研究毛孔大小和间距对甲赋予状态的影响.
- 提出煤炭孔内的甲三相过渡模型.
主要方法:
- 低温吸附 (LT-N2A) 用于描述孔隙结构.
- 侵入孔径测量 (MIP) 用于孔径大小分布分析.
- 甲同热吸附实验和分子模拟.
主要成果:
- 对LT-N2A和MIP分类孔隙进行综合分析,将孔隙分类为关节孔隙范围.
- 分子模拟确定了影响甲供给的关键孔径 (2,4,10 nm).
- 提出了一种基于吸附热和能量的甲三相过渡的新概念.
结论:
- 孔隙结构和吸附能力对于贵州TDC的CBM至关重要.
- 了解孔中的甲相转换为气体储存研究提供了新的途径.
- 这项研究为优化从构造性煤矿库中提取气体提供了新的见解.
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