摘要
水合物浆液输送作为流动安全保障主要措施和天然气新型运输方法之一,其复杂的流动特性引起了学者的广泛关注。以国内首套水合物高压实验环路为依托,基于水合物生成后管路压降明显增加的现象,分析了4.5 MPa压力下,0.4、0.5、0.9、1.1 m/s四个流速下压降变化幅度,对比水合物生成前后体系摩阻系数的变化,定量表示了各个流速下颗粒存在对摩阻系数的影响。实验结果表明,流速越大,颗粒存在对于体系摩阻系数的影响越小;并且通过对比0.4和0.5 m/s的实验结果可知,在水合物浆液流动过程中,不同的流速对应着不同的液固流型,存在临界悬浮流速的概念。
Hydrate slurry transportation has brought the attention of many researchers as an important flow safety assurance method and a new way of gas transmission.Based on the theory that the pressure drops significantly when hydrates are generated,a series of experiments(at the velocity of 0.4,0.5,0.9 and 1.1 m/s under 4.5 MPa)were conducted on the first set of domestic high-pressure experiment loop to analyze the pressure drop,frictional resistance factor and particle influence of hydrate slurry.The results showed that the influence of existed particles to frictional resistance factor was getting weaker as the velocity got faster.Comparing the results of 0.4 and 0.5 m/s indicated that for hydrate slurry transportation,different velocities corresponded to different liquid-solid flow patterns,and critical suspension velocity existed.
作者
李文庆
吕晓方
孙宪航
左江伟
宫敬
LI Wen-qing;LVXiao-fang;SUNXian-hang;ZUO Jiang-wei;GONG Jing(China Petroleum Technology and Development Corporation(Africa Branch),Beijing 10002& China;Jiangsu Key Laboratory of Oil-Gas Storage and Transportation Technology,Changzhou University,Jiangsu Changzhou 213016,China;China University of Petroleum( Beijing),Beijing 102249,China)
出处
《当代化工》
CAS
2019年第1期29-31,35,共4页
Contemporary Chemical Industry
基金
国家自然科学基金项目(51574045)
中国石油科技创新基金研究项目(2018D-5007-0602)
江苏省高等学校自然科学研究面上项目(18KJB440001)
常州市科技计划项目(CJ20160041)
关键词
水合物
乳液
压降
摩阻系数
临界流速
Hydrate
Emulsion
Pressure drop
Frictional resistance factor
Critical velocity
