十二烷基硫酸钠对瓦斯水合物生长速率的影响  

Effect of sodium dodecyl sulfate on formation rate of coal mine gas hydrate

作　　者：张保勇[1] 吴强[1] 

机构地区：[1]黑龙江科技学院安全工程学院,黑龙江哈尔滨150027

出　　处：《煤炭学报》2010年第1期89-92,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50904026;50874040);黑龙江省自然科学基金资助项目(B2007-10);哈尔滨市科技创新人才研究专项资金资助项目(2007RFXXS050;2008RFQXG111)

摘　　要：运用可视化瓦斯水合物实验装置,研究了4种浓度(0.4、0.5、0.6和0.7 mol/L)十二烷基硫酸钠溶液对瓦斯体系水合物生长速率的促进效果,实验获取了瓦斯水合物生成过程的压力-时间曲线,利用水合物生长速率模型对水合物生长速率进行了计算。结果分析表明:十二烷基硫酸钠提高了水合物生长速率,促进了瓦斯水合物生成;十二烷基硫酸钠促进作用存在一个最佳浓度,在所研究的各个体系中,0.6 mol/L SDS溶液中瓦斯水合物生长速率最大,9.0 MPa压力条件下生长速率可达3.35×10-5m3/h。The acceleration effect of the concentration of SDS solution on coal mine gas hydrate formation rate was investigated by the visual experimental apparatus of coal mine gas hydrate. The experiments included four types of SDS solutions with different concentrations （0. 4,0.5,0. 6 and 0.7 mol/L）. The pressure-time curve （p -t） in the formation process was obtained and the gas hydrate formation rate was calculated based on the formula of gas hydrate formation rate. The results show that SDS enhances the hydrate formation rate, leading to the acceleration 9f gas hydrate formation. An optimal concentration of SDS exists for its acceleration of gas hydrate formation, with 0. 6 mol/L in this study. Specifically, the formation rate can attain to 3.35 x 10^-5 m^3/h in this kind of solution, under 9.0 MPa.

关 键 词：十二烷基硫酸钠 瓦斯水合物 生长速率 低浓度瓦斯分离 煤与瓦斯突出 

分 类 号：TD712.1[矿业工程—矿井通风与安全]