Differentiation of static and dynamic interfacial area in the structured packed column. (12th October 2022)

• Record Type: Journal Article
• Authors: Zeng, Chao; Fu, Yucheng; Singh, Rajesh; Bao, Jie; Xu, Zhijie
• Is Part Of: Chemical engineering science. Volume 260(2022)
• Publication Date: 2022-10-12
• Subjects: Static area -- Interfacial area -- Effective area -- Interfacial velocity -- Simulation; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; Chemical engineering; Periodicals; Electronic journals; 660
• DOI: 10.1016/j.ces.2022.117877
• Languages: English
• ISSNs: 0009-2509

Abstract

Highlights: The relationship between interfacial area and interfacial velocity in structured packing follow gamma distribution. Contact angle shows the most important influence on interfacial area, and viscosity shows dominant influence on static area. Differentiation of static and dynamic interfacial areas can provide accurate prediction of effective mass-transfer area. Abstract: Effective mass-transfer area plays a key role for post-combustion carbon capture. The static area, an inactive part relative to mass transfer, needs to be differentiated in the interfacial area. In the present study, CFD method is employed to investigate static and dynamic interfacial areas in Mellapak 500.Y structured packing. A wide range of physical properties and loading conditions are included to understand their effects on both areas. The result shows that the relationship between interfacial area and interfacial velocity at the local scale can be described by gamma distribution with good accuracy. The influences of various physical properties derived from simulation are compared with existing experiment-based correlations for both static and interfacial areas. The result shows the dominant influence of viscosity on the static area, and the most importance of the influence of contact angle on the interfacial area. This study also highlights the importance of viscosity, which is usually ignored.