气液比对多组分瓦斯水合物含气量影响  

Effects of gas-liquid volume ratios on gas storage capacity of multicomponent gas hydrate

作　　者：吴强[1] 潘长虹[1] 张保勇[1] 高霞[1] 张强[1] 吴琼[1] 

机构地区：[1]黑龙江科技大学安全工程学院,黑龙江哈尔滨150027

出　　处：《煤炭学报》2013年第7期1191-1195,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51174264;51104062;50904026)

摘　　要：利用可视化水合物实验设备,设定初始压力5 MPa、初始温度20℃,在0.1 mol/L四氢呋喃(THF)-0.2 mol/L十二烷基硫酸钠(SDS)复配溶液体系中进行多组分瓦斯水合物生成实验。根据气体状态方程(P-V-T)计算出4种气液比(40,60,80和100)反应体系中多组分瓦斯水合物含气量,从溶液的过饱和条件和水合物中晶体孔穴填充率的角度进行了机理分析。结果表明:对于同一种多组分瓦斯气体,反应体系气液比的增大,促进了瓦斯-溶液之间物质传递,加快了溶液的过饱和条件,提高了水合物中晶体孔穴填充率,致使水合物中含气量增大。This paper was focused on investigating multicomponent gas hydrate formation in the system of compound solution of tetrahydrofuran（THF） solution with molar concentration of 0. 1 mol/L and mixture of sodium dodecyl sulfate （SDS） with molar concentration of 0. 2 tooL/L, when the initial pressure was 5 MPa, temperature was 20 ℃, by using visual hydrate equipments. According to the gas state equation, gas storage capacity of muhicomponent gas hydrate of four different gas-liquid ratios （40,60,80 and 100） respectively was calculated. The mechanism analysis was conduc- ted from the respects of the solution supersaturated condition and the filling rate of crystal cavities in the hydrate. The results show that, for the same kind of muhicomponent gas, with the increasing of gas-liquid ratio, the substance trans- ferring between gas and liquid can be promoted, the conditions of liquid supersaturation is sped up and the filling rate of crystal cavities in the hydrate is improved, which will lead to the increasing of gas content in the hydrate.

关 键 词：气液比 瓦斯水合物 含气量 过饱和 

分 类 号：TD712[矿业工程—矿井通风与安全]