摘要：Accurate prediction of hydrate formation conditions is the basis of hydrate related research. The ChenGuo hydrate model could accurately predict the formation conditions of hydrates. However, the misjudgment of basic hydrates structure makes it unsatisfactory to calculate the system with sI and sII hydrates coexisting. Consequently, we proposed that sI and sII basic hydrates will be formed simultaneously under specific conditions. The structure composition of basic hydrates is influenced by three factors: structure induction, driving force of hydrate independent nucleation and composition of gas mixture. On this basis, we improved the Chen-Guo hydrate model by introducing new parameters and adjusted the true structure composition of basic hydrates. The calculation results show that the average absolute deviation of 201 sets of data can be reduced from 9.33% to 2.74%. The calculation precision of modified method is better than that of the original Chen-Guo hydrate model. (c) 2022 Elsevier Ltd. All rights reserved.

关键字：Hydrate formation conditions; The Chen-Guo hydrate model; sI and sII hydrates; Structure composition of basic hydrates

ISSN号：0009-2509

卷、期、页：卷: 250

发表日期：2022-03-15

影响因子：4.311100

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：CHEMICAL ENGINEERING SCIENCE

通讯作者：高靖博,张宇

第一作者：孙强,徐振,王逸伟,郭绪强,杨兰英

论文类型：期刊论文

论文概要：高靖博,孙强,徐振,张宇,王逸伟,郭绪强,杨兰英，Modelling the hydrate formation condition in consideration of hydrates structure transformation，CHEMICAL ENGINEERING SCIENCE，2022，卷: 250

论文题目：Modelling the hydrate formation condition in consideration of hydrates structure transformation