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OALib Journal期刊
ISSN: 2333-9721
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不同颗粒介质内甲烷水合物形成反应特征
Keywords: 高,顶层介质内水合物形成速率略高于中、下层的形成速率,经历相同的形成条件,粉土内的最终水分转化率略高于硅胶内的最终水分转化率。甲烷水合物,形成,水分,颗粒性质,多孔介质
Abstract:
？在半饱和含水态具有不同粒径、孔隙半径的人工、天然介质——硅胶、粉土内形成甲烷水合物，3支pf-meter探头测量反应过程中介质内垂直方向上不同位置处的基质势，据此计算分析介质内由水合物形成引起的水分消耗规律，进而探讨不同介质内甲烷水合物形成反应特征。通过实验发现，多孔介质的颗粒、孔径物理性质明显影响甲烷水合物的形成反应特征：水合物在具天然介质性质的粉土内的形成反应是一个长期持续过程，相反地，在硅胶内的形成反应过程较短且在硅胶内均匀形成；人工多孔介质——硅胶粉内的水合物形成反应速率维持恒定，天然多孔介质——粉土内的水合物形成速率由快减慢；甲烷气体由反应釜顶部注入，气体扩散进入介质顶层的速率最
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