冰成瓦斯水合物生成动力学及分离效果实验研究  

Experiment on formation kinetics and separation effect of gas hydrate from ice

作　　者：张保勇[1,2] 张赛[1,2] 刘金华[1,2] 王世海[1,2] 刘文新[1,2] 

机构地区：[1]黑龙江科技大学安全工程学院,哈尔滨150022 [2]黑龙江科技大学瓦斯等烃气输运管网安全基础研究国家级专业中心实验室,哈尔滨150022

出　　处：《黑龙江科技大学学报》2016年第1期31-35,共5页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金重点项目(51334005);国家自然科学基金项目(51274267;51404102)

摘　　要：针对驱动力对瓦斯混合气-冰体系水合分离效果影响,利用水合分离实验装置开展了3种驱动力下(1、2、3 MPa)冰成瓦斯水合物分离实验,基于水合物生长速率、回收率及分离因子计算理论,分析了甲烷体积分数与驱动力对生长速率及分离因子等影响。结果表明:瓦斯混合气-冰体系水合物诱导阶段不明显,驱动力影响下瓦斯水合物最大生长速率提高了65%,甲烷回收率提高了122%,甲烷分离因子提高了292%,生长速率、分离因子均与甲烷体积分数及驱动力呈正相关。This paper arises from the need for investigating the effects of driving force on the hydrate separation of gas mixture-ice system. The investigation is accomplished by a series of experiments on icegas hydrate separation with three driving forces（ 1,2 and 3 MPa） using experimental device for hydrate separation; and an analysis of the effects of methane concentration and driving forces etc,on the growth rates and separation factors,based on the calculation theory of hydrate growth rates,recovery rates,and separation factors. The study finds no obvious hydrate induction phase for the gas-ice hydrate systems;65%,122% and 292% improvements respectively for the maximum growth rates of gas hydrate,methane recovery rates,and methane separation factors,all under the influences of driving forces; and a positive correlation between growth rates and the separation factors on the one hand and methane concentration and driving forces on the other.

关 键 词：瓦斯水合物 冰粉 生长速率 分离因子 

分 类 号：TD712[矿业工程—矿井通风与安全]