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CS₂提取对煤炭中甲溶解的有针对性的刺激效应

Nian Si¹, Gaofeng Liu¹, Zhen Zhang¹

¹School of Resources & Environment, Henan Polytechnic University, Jiaozuo 454003, China.

Langmuir : the ACS journal of surfaces and colloids

|December 5, 2025

概括

二硫化碳 (CS) 的提取削弱了煤炭吸附,增强了甲脱附. 这一过程改变了脱吸阶段,增加了气体释放,促进了煤床甲 (CBM) 产量.

科学领域:

地质化学地质化学
石油工程是石油工程中的一个.
物理化学物理化学

背景情况:

已知二硫化碳 (CS) 能刺激煤炭的宏分子和孔隙结构.
在CS2提取后了解甲脱附特性对于优化煤床甲 (CBM) 恢复至关重要.
之前的研究还没有充分探讨CS2提取对甲脱吸动态的影响.

研究的目的:

调查CS2提取对煤炭中甲脱吸特性的影响.
阐明CS₂提取的潜在刺激机制对溶解动态的影响.
为利用CS2提取来增强CBM生产提供理论基础.

主要方法:

在煤样本上进行了同热吸附实验.
应用了溶解阶段理论来分析甲释放的变化.
在CS2提取之前和之后测量和比较了关键的脱吸参数.

主要成果:

CS2提取减弱了吸附和增强了脱附,由降低的朗穆尔常数 (a和b) 表示.
溶解阶段发生了变化,第二阶段 (缓慢溶解) 和第三阶段 (快速溶解) 扩大,第四阶段 (敏感溶解) 缩短.
临界溶解压力 (P_cd),气体和 (β),有效压力下降 (P_e) 和有效溶解量 (V_e) 增加,这意味着更容易的溶解条件和更高的溶解能力.

结论:

CS2提取有效地降低了甲脱吸的关键条件,并提高了整体脱吸能力.
该研究显示,CS2提取促进了吸附气体的转化为自由气体,延长了有效的生产期.
这些发现支持将CS2提取作为一种可行的方法来修改脱落特性并促进CBM恢复的应用.

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