关于受二硫化碳影响的煤炭中孔裂变异的实验调查
Chunshan Zheng1,2,3, Xing Li1,3, He Li4
1Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan 232001, China.
ACS omega
|October 23, 2023
概括
碳二硫化物处理有效地提高了煤炭的多孔性和裂纹发展,大大提高了甲提取潜力. 岩显示出最实质性的多孔性增加,表明其适用于增强透性技术.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
背景情况:
- 低透性煤层对高效的甲提取构成了挑战.
- 溶剂处理是一种有前途的技术,可以提高煤层的透性.
研究的目的:
- 研究二硫化碳处理对不同类型的煤炭 (?? 煤,煤,炭化石) 孔隙和断裂结构的影响.
- 评估二硫化碳处理对提高甲提取效率的潜力.
主要方法:
- 核磁共振 (NMR) 测试是指核磁共振 (NMR) 的测试.
- 液吸附分析液吸附分析
- 超声波测试 超声波测试 超声波测试
- 扫描 CT 扫描 扫描 CT 扫描
- 对于碎形分析的弗伦克尔-哈尔西-希尔模型.
主要成果:
- 碳二硫化物处理显著增加了煤炭的多孔性,煤显示出最大的增加 (34.10%).
- 毛孔直径分布扩大,平均毛孔直径增加,毛孔连接性得到改善.
- 特定表面积从微孔转移到小和中等孔.
- 碎形尺寸表明毛孔结构复杂性的变化.
- 超声速下降,减弱系数增加,证实了增强的断裂发展,特别是在煤和煤中.
结论:
- 碳二硫化物处理在改善煤层中孔隙和断裂结构方面是有效的.
- 该处理提高了煤炭的透性,为化学透性增强技术提供了理论基础.
- 与炭石相比,矿和煤显示出更大的改进.
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