表面活性剂在瓦斯水合物生成过程中动力学作用

促进水合物快速生成是利用水合物技术预防煤与瓦斯突出和进行煤层气储存运输的关键，表面活性剂作为水合物生成的促进剂，对其动力学促进作用进行研究十分必要．利用水合物实验设备，研究了4种表面活性剂（T40，T80，SDS，SDBS）溶液体系中瓦斯水合物的生成过程，结合建立的水合物诱导时间和生成速度模型对实验数据进行了计算和分析．结果表明：表面活性剂的加入降低了溶液的表面张力，促进了烷烃类气体溶解，加快了晶核形成过程，缩短了水合物生成的诱导时间，提高了生成速度，加快了水合物形成的动力学进程．

Dynamic Effect of Surfactant on Gas Hydrate Formation Process

Accelerating hydrate formation is the key of preventing coal and gas outburst and storaging and transporting coalbed methane by using hydrate technique. Researching the dynamic effect of surfactants which are the accelerants of gas hydrate formation is necessary.Using hydrate equipments,gas hydrate formation processes in four types of surfactant solution systems(T40,T80,SDS,SDBS)were studied.Combined with the calculation models of induction time and formation rate of gas hydrate,the experimental data were calculated and analyzed.The results show that the addition of surfactant decreases the surface tension of solution,which facilitates the gas dissolution,quickens the crystal nucleus formation,shortens the induction time of hydrate formation,and increases the formation rate and dynamic progress of hydrate formation.