石油化工高等学校学报2012，Vol.25Issue(6)：5-9,5.DOI:10.3969/j.issn.1006-396X.2012.06.002
二氧化碳在水中扩散系数的实验测定和计算
The Experimental and Modeling Studies on the Diffusion Coefficient of CO2 in Pure Water
摘要
Abstract
When carbon dioxide was injected into the seafloor, the diffusion coefficients of carbon dioxide in the water under different conditions, is one of the important parameters to decide whether liquid carbon dioxide or carbon dioxide hydrate can exist stably or not. In the project, the diffusion coefficients of carbon dioxide in the water were measured at 4~30 ℃ , with the pressure under 1 MPa, The results show that the diffusion coefficient is a parameter related with concentration in high pressure condition. By Importing the indeterminate function to describe the process of diffusion related with concentration, the data that refers to diffusion coefficient of carbon dioxide - water system were obtained and the calculated mode that contains the relationships between carbon dioxide's diffusion coefficient and temperature, concentration was fitted on the base of linear relation of short -time diffusing capacity and the root of time.关键词
二氧化碳/扩散系数/浓度/测定Key words
Carbon dioxide/ Diffusion coefficient/ Concentration/ Measure分类
能源科技引用本文复制引用
刘爱贤,刘鹏,孙强,廖志新,郭绪强..二氧化碳在水中扩散系数的实验测定和计算[J].石油化工高等学校学报,2012,25(6):5-9,5.基金项目
国家自然基金资助项目(20676146) （20676146）
科技部"973"项目(2009CB219504). （2009CB219504）
