SDS溶液与树脂复配体系下天然气水合物生成分析  

Analysis on Natural Gas Hydrate Formation in SDS Solution and Resin Compound System

作　　者：刘嘉琪 张杰[2] 潘振[1] LIU Jia-qi;ZHANG Jie;PAN Zhen(College of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,China;PetroChina West Pipeline Company,Wulumuqi 830000,China)

机构地区：[1]辽宁石油化工大学石油天然气工程学院,抚顺113001 [2]中国石油西部管道公司科技信息服务中心,乌鲁木齐830000

出　　处：《当代化工》2020年第10期2230-2234,共5页Contemporary Chemical Industry

摘　　要：使用3种不同极性的大孔吸附树脂与不同质量浓度SDS溶液复配的体系进行天然气水合物生成实验,探究极性作用与毛细作用对天然气水合物生成的影响。结果表明:树脂极性吸附能力能够导致体系压强的变化,极性越强,压降曲线的斜率也就越大,水合物生成速率也就越快。影响水分子迁移方向的主要因素是毛细作用与树脂极性,溶液表面张力越大,体系内产生的毛细作用也就越强,对水分子的驱动也就越强;极性越强,水分子与天然气气体分子越容易在树脂周围聚集,也就越容易生成水合物。天然气水合物在反应釜壁面处产生的毛细作用大于溶液内部颗粒之间的毛细作用和树脂极性作用之和,水分子的迁移主要发生在反应釜壁面处。同时树脂的极性与颗粒间的毛细力共同作用会产生棒状水合物,极性作用越强棒状水合物的生成量也就越多。Natural gas hydrate formation experiments were performed using systems of three types of macroporous adsorption resins with different polarities and different concentrations of SDS solution to investigate the influence of polar and capillary effect on gas hydrate formation.The results showedthat,the polar adsorption capacity of the resin could cause the pressure of the system to change,the stronger the polarity,the greater the slope of the pressure drop curve.The main factors affecting the migration direction of water molecules were the capillary action and the polarity of the resin,the greater the surface tension of the solution,the stronger the capillary action generated in the system and the stronger the drive for water molecules;The stronger the polarity,the easier it was for water and natural gas molecules to gather around the resin,and the easier it was to form hydrates.The capillary effect on the wall of the reactor was greater than the sum of the capillary effect between the particles inside the solution and the polarity of the resin,the migration of water molecules mainly occurred at the wall of the reactor.Simultaneously,the polarity of the resin and the capillary force between the particles together causedrod-like hydrateformation,the stronger the polarity,the more the amount of rod-like hydrates will be generated.

关 键 词：压降曲线 生成位置 棒状水合物 极性作用 毛细作用 

分 类 号：TE89[石油与天然气工程—油气储运工程]