四氢呋喃水合物浆流动特性  

Flow behaviors of tetrahydrofuran hydrate slurry

作　　者：王武昌[1] 李玉星[1] 樊栓狮[2] 梁德青[3] 

机构地区：[1]中国石油大学(华东)储建学院储运工程系,山东青岛266555 [2]华南理工大学传热强化与过程节能教育部重点实验室,广东广州510640 [3]中国科学院广州能源研究所,广东广州510640

出　　处：《化工进展》2010年第8期1418-1422,共5页Chemical Industry and Engineering Progress

基　　金：国家科技重大专项大型油气田及煤层气开发项目(2008ZX05017-004)

摘　　要：利用实验环道进行了水合物颗粒体积分数为0～65.2%的四氢呋喃(THF)水合物浆的流动实验。管道生成四氢呋喃水合物后,水合物浆的压降梯度随着流速的增加而增加;随水合物体积分数的变化存在一个临界体积分数,当管道中的水合物体积分数小于临界值时,压降随体积分数的增加而出现很小的增加,管道中水合物呈稀浆状,浆体为牛顿流体;当管道中体积分数大于临界值时,压降梯度随体积分数的增加急剧增加,管道中水合物呈泥状,浆体为Bingham流体。临界体积分数随着浆体流速的增加而增大,在0.5～3.5m/s的范围内,临界体积分数为39.4%～50.4%,文中回归了泥状水合物的屈服应力及表观黏度。并根据水合物浆的流动特性分段回归了水合物浆在管道中流动的压降计算公式,实验验证表明回归的计算公式可以比较准确地计算管道中水合物浆流动的压降,可以为THF水合物的流动及其它水合物浆的流动提供指导。The flow behaviors of tetrahydrofuran（THF）hydrate slurry with volume concentration of 0 to 65.2% were studied in a flow loop with a diameter of 42.0mm and a length of 30.0m. Pressure drops in the pipeline were also studied. According to the experiments,the hydrate slurry with a volume concentration less than 39.4% shows Newton behaviors,while that with a volume concentration larger than 50.4% shows Bingham behaviors. Moreover the yield stress as well as the relative viscosity of the hydrate slurry shows Bingham behaviors. Finally,relations to estimate the pressure drop of hydrate slurry in the pipeline with volume concentrations from 0 to 65.2% was established and verified,which showed a good agreement with experimental results.

关 键 词：四氢呋喃 水合物浆 流动特性 流变性 压降 

分 类 号：TQ022.4[化学工程]