化工进展2017，Vol.36Issue(9)：3164-3176,13.DOI:10.16085/j.issn.1000-6613.2017-0154
油气输送管线水合物沉积研究进展
A review on hydrate deposition in oil and gas transmission pipelines
摘要
Abstract
Hydrate deposition is a main reason for the plugging in oil and gas transmission pipelines. This paper investigates the common experimental apparatus used for hydrate deposition research, including micromechanical force apparatus,rocking cells and flow loops of different scales. According to the researches performed using the apparatuses above and through computational fluid dynamics simulations,hydrate particle bedding,hydrate film growth and hydrate particle wall adhesion are identified to be the three mechanisms of hydrate deposition. High hydrate concentration,large hydrate particle size and low fluid velocity together lead to hydrate particle bedding. When there is a temperature gradient between the pipe wall and the bulk phase,gas molecules or water molecules tend to diffuse to the cooler pipe wall to form film growth deposition. The capillary liquid bridge force and the van der Waals force between hydrate particle and the pipe wall could count for adhesion deposition. For the three deposition mechanisms,deposition characteristics and deposition models were introduced respectively. Hydrate deposition mechanisms are closely related to subcooling and they can besegregated depending on the fluid subcooling degree at different pipeline positions. The optimization of deposition model and the coupling between hydrate deposition characteristics and flow characteristics have a great significance for oil-gas flow assurance,and is the main focus of the future research.关键词
水合物/沉积/着床/膜生长/粘附Key words
hydrate/deposition/bedding/film growth/adhesion分类
能源科技引用本文复制引用
宋光春,李玉星,王武昌,姜凯,施政灼,赵鹏飞..油气输送管线水合物沉积研究进展[J].化工进展,2017,36(9):3164-3176,13.基金项目
国家自然科学基金(51006120)、中央高校基本科研业务费专项资金(14CX02207A,17CX06017,17CX05006)及中国石油大学(华东)研究生创新工程(YCX2017062)项目. （51006120）
