![]() The measured Peclet number was about 39, indicating an approach to plug flow of fluid across the tray. These authors have measured the composition profiles along a rectangular tray, 1.067 m x 89 mm, at various F factors for the methanol-water system. Biddulph and Dribika (1986) provide a table of the extensive data on binary sieve tray efficiencies with column diameters in excess of 0.45 m. A comprehensive description of these details is given by Lockett (1986). A large number of correlations exist for the variation of E, with flow parameter. These are functions of the diffusion coefficients in the liquid and vapor phases. The AIChE tray design procedures for binary mixtures involves the point or local efficiency, Em, which is related to the two film coefficients in the film model. Incipient three phase distillation: Experimental tray composition profiles Incipient three phase distillation: Experimental tray composition profiles ![]()
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