Determination of individual diffusion coefficients of alkane solvent(s)-CO₂-heavy oil systems with consideration of natural convection induced by swelling effect

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• 作者：Yu Shi ; Sixu Zheng ; Daoyong Yang ; ^{tony.yang@uregina.ca}
• 关键词：Diffusion coefficient ; Alkane solvent(s)&ndash ; CO2&ndash ; heavy oil ; Heat transfer ; Mass transfer ; Natural convection
• 刊名：International Journal of Heat and Mass Transfer
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：107
• 期：Complete
• 页码：572-585
• 全文大小：2421 K
• 卷排序：107

文摘

Determination of individual diffusion coefficient with considering natural convection. Diffusion tests of solvent(s)–CO2–heavy oil systems under elevated temperatures. Diffusion coefficients larger than those obtained with conventional methods. Achievement of a higher mass transfer rate with the aid of elevated temperature. Natural convection has flow direction opposite to that of gas-heavy oil mass transfer.