化工进展2018，Vol.37Issue(7)：2565-2576,12.DOI:10.16085/j.issn.1000-6613.2017-1632
中国关于水合物在管道中的生成过程研究进展
Research progress on formation of hydrates in pipelines in China
孙贤 1刘德俊 1崔启华 2吴玉国1
作者信息
- 1. 辽宁石油化工大学石油天然气工程学院,辽宁 抚顺 113001
- 2. 辽宁石油化工大学外国语学院,辽宁 抚顺 113001
- 折叠
摘要
Abstract
As a new type of hydrate control method and multiphase safe mixing method,hydrate slurry mixing infusion technology has attracted more and more attention. In this paper,the research of hydrate formation process,hydrate coalescence theory and deposition theory of hydrate particle tube wall are introduced in recent three years in China,and the future research direction is presented. The research conclusions of hydrate formation process in pipeline which are obtained by experiment under the condition of different pipe transportation media and pressure drop as well as the influence of inhibitor on macroscopic evolution of hydrate in pipeline and the conditions of plugging of pipeline are summarized. In the aspect of hydrate coalescence theory , two hypotheses including particle coalescence principle and hydrate induction principle are introduced and the research deficiencies are put forward. Because the hydrate coalescence theory cannot fully explain the phenomenon that the pipeline pressure drop will increase sharply when hydrate formation occurs,the theory of deposition of hydrate particles has been developed in recent years,but few studies have been done on the theory in China. The future directions of development are as follows. ① The coupling between hydrate growth process and the types of pipe conveying media,flow rate,pressure drop,water cut as well as the change of pipe fall and temperature in the actual engineering should be studied,and establish mathematical model;② The influence of adding new type inhibitor on the macroscopic morphology evolution of hydrate in pipeline under different conditions should be investigated as well;③ At present,there are two main hypotheses about hydrate coalescence:particle coalescence principle and hydrate induction principle,but there are some experimental supports for this two hypotheses. Therefore,the study of the mechanism of hydrate coalescence in the future should be focused on the distinction and relation between these two theories;and ④ In China,there is little theoretical research on the pipe wall deposition,thus the future should focus on this aspect.关键词
水合物浆/聚并理论/管壁沉积理论/液桥Key words
hydrate slurry/coalescence theory/pipe wall deposition theory/liquid bridge分类
化学化工引用本文复制引用
孙贤,刘德俊,崔启华,吴玉国..中国关于水合物在管道中的生成过程研究进展[J].化工进展,2018,37(7):2565-2576,12.
