中国电机工程学报Issue(2)：295-299,5.DOI:10.13334/j.0258-8013.pcsee.2014.02.012
含盐体系二氧化碳水合物的生成与分解特性
Characteristics of CO2 Hydrates Formation and Decomposition in Saline Solutions
摘要
Abstract
CO2 hydrates can be used for long term storage of CO2 in the deep ocean. The characteristics of CO2 hydrate phase equilibrium in saline solutions with different salinities were investigated. A series of experiments were carried out in a small scale high-pressure reactor using constant volume method. The effects of salinity and pH on CO2 hydrate formation and decomposition were discussed. The experimental results indicate that phase equilibrium conditions of CO2 hydrate are greatly restricted in saline solutions compared to that in pure water. Since salt components inhibit CO2 hydrate formation, higher initial salinity will lead to longer induction time and less hydrate formation. The induction time of CO2 hydrates formation in 4.5% salinity solution is 6 times longer than that in pure water. Saline solution with higher pH is unfavorable to CO2 hydrate nucleation and formation. Decomposition rate of CO2 hydrates is accelerated with the increase of temperature. However, salinity has no significant impact on CO2 hydrate decomposition.关键词
二氧化碳水合物/盐度/相平衡/水合物生成/分解Key words
CO2 hydrate/salinity/phase equilibrium/hydrate formation/decomposition分类
资源环境引用本文复制引用
刘妮,由龙涛,余宏毅..含盐体系二氧化碳水合物的生成与分解特性[J].中国电机工程学报,2014,(2):295-299,5.基金项目
国家自然科学基金项目(50706028)；上海市教委科研创新项目(12YZ106)。Project Supported by National Natural Science Foundation of China (50706028) （50706028）
Innovation Program of Shanghai Municipal Education Commission(12YZ106) （12YZ106）
