Mixing pool model for prediction of distillation tray efficiency with liquid entrainment

✍ Scribed by Zhang Hongyan; Wang Shuying; Zhou Rongqi; Duan Zhanting

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 65 KB
• Volume: 88
• Category: Article
• ISSN: 1385-8947
• DOI: 10.1016/s1385-8947(01)00247-9

✦ Synopsis

In order to make clear the effect of liquid entrainment on the distillation tray efficiency, a new type of mixing pool model is developed in this paper to calculate the apparent distillation tray efficiencies when the liquid entrainment happens for the counter current tray with vapour unmixing between trays and liquid partially mixing on trays. The analytical solutions are obtained and compared with the calculated results of Bennett's experimental correlations. The mean relative error between them is 5.6% for the range of 0 ≤ Pe ≤ 1000, 0.5 ≤ λ ≤ 3.0 and 0.4 ≤ E ≤ 1.0. The result shows that the model presented in this paper is reliable.