A numerical study on the non‐isothermal flow characteristics and hydrate risk of CO2 in buried transmission pipelines under the gas‐phase transportation mode

摘要: With the development and progress of carbon dioxide (CO2) capture storage technology, study flow assurance CO2 in transmission pipelines needs to be further deepened. In this study, aiming at gas‐phase transportation mode CO2, first, a new prediction model temperature, pressure as well hydrate formation risk buried is established. Second, solving methods differential discretization piecewise iteration are introduced detail. Third, validation sensitivity analysis typical parameters performed. The results show that: (a) there good agreement between software simulation results. (b) subcooling length region increase with rate. Appropriate rate can reduce pipelines. (c) decrease temperature increases. order prevent process, low temperatures should avoided. (d) hydrate‐formation area first then conducive avoiding risk. This provides basic theoretical guidance for optimizing assessment © 2019 Society Chemical Industry John Wiley & Sons, Ltd.