摘要
为探究瓦斯快速水合分离新方法,利用高吸水性聚合物(SAP)饱和吸附四氢呋喃(THF)-十二烷基硫酸钠(SDS)复配溶液促进瓦斯水合物形成,通过高压可视化分离实验获得瓦斯水合过程压力-温度-时间曲线,结合水合物生长速率计算模型,确定出不同反应体系瓦斯水合物形成诱导时间和水合分离速率,分析SAP-瓦斯-水溶液体系的水合作用机理,建立了SAP促进水合物形成的机理假说模型,探讨了瓦斯与水分子在分离载体中的物质传递作用.结果表明:SAP使瓦斯气体与液体的接触面积由7.065cm2增到79.240cm2,提高了甲烷分子进入接触面机率;本文3组添加SAP的实验体系,其瓦斯水合物形成诱导时间较空白实验分别缩短了9,10和3min,瓦斯水合分离速率较空白实验分别提高了0.56,0.53和1.42cm3/min.
In order to explore the new method of hydration separation rate of coal mine gas,using super-absorbent polymer（SAP） to saturatedly absorb the combination solution of sodium dodecyl sulfate（SDS） and tetrahydrofuran（THF） was to promote gas hydrate formation.By means of high-pressure visual separation experiment,pressure and temperature versus time curves during gas hydrate formation were obtained in this study.Combination of the calculation model of hydrate growth rate determined the induction time and hydrate separation rate of gas hydrate in different reaction systems.Hydration mechanism of SAP the experimental phenomena and results of hydrate formation were analyzed.Hydration mechanism of SAP,gas and aqueous solution system was analyzed.The hypothesis model of SAP promoting hydrate formation was established and the mass transferring effect of gas-water molecules in the separating carrier was discussed in detail.The results show that： the gas makes the contact area of gas and liquid increase from 7.065 cm2 to 79.240 cm2;the probability that methane molecules enter into contact surface increases;there are 3 groups of experimental systems that add SAP in this paper;the induction time of the gas hydrate formation shortens 9,10 and 3 min compared to blank test;and hydration separation rate of gas increases by 0.56,0.53 and 1.42 cm3/min in comparison with blank test.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2013年第3期382-387,共6页
Journal of China University of Mining & Technology
基金
黑龙江省教育厅科学技术项目(11551420)
国家自然科学基金项目(51274267
51174264
51104062)
黑龙江省研究生创新项目(YJSCX2012-333HLJ)
黑龙江科技学院青年才俊培养计划
