气液比对表面活性剂复配促进甲烷水合物生成影响

Effect of gas-liquid ratio on surfactants to promote methane hydrate formation

气液比作为影响天然气水合物快速、大量生成的关键因素,有必要对其深入研究。利用天然气水合物装置,设定初始压力为6 MPa,温度为275.15 K,研究了十二烷基硫酸钠(SDS)与烷基多糖苷(APG1214)复配溶液体系在不同气液比条件下对天然气水合物生成影响。结果表明,合理的选取气液比能增强水合物的储气能力以及生成速率,4.00为其最佳气液比,最终储气密度可达到110.2(V/V),实验初始气液比的大小会影响水合物的生成过程,增加气液比能增加水合物的生成速率。因此,合理地将表面活性剂复配以及选取气液比,可显著提高水合物生成速率与储气能力。

The gas-liquid ratio is a key factor affecting the rapid and large-scale generation of natural gas hydrates,and it is necessary to study it in depth.A natural gas hydrate device was used,with an initial pressure of 6 MPa and a temperature of 275.15 K.The mixed solution system of sodium dodecyl sulfate(SDS)and alkyl polyglycoside(APG1214)was studied under different gas-liquid ratio conditions.Impact on natural gas hydrate formation.Reasonable selection of gas-liquid ratio can enhance the gas storage capacity and generation rate of hydrates.4.00 is the best gas-liquid ratio.The final gas storage density can reach 110.2(V/V).The ratio will affect the hydrate formation process,increasing the gas-liquid ratio can increase the rate of hydrate formation.Therefore,reasonably mix surfactant and select gas-liquid ratio can significantly increase the hydrate formation rate and gas storage capacity.