https://doi.org/10.15255/KUI.2020.027
Published: Kem. Ind. 69 (13) (2020) P31–P37
Paper reference number: KUI-27/2020
Paper type: Original scientific paper
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Non-ideal Flow in Model Tubes

F. Kurt, K. Licht and V. Kosar

Abstract

The aim of this paper was to investigate the flow of liquid in three different model tubes: an empty straight tube, a tube filled with glass beads, and an empty spiral tube. In doing so, the basic concept is contained in the notion of residence time distribution (RTD). In order to obtain RTD curves, the tracer concentration at the exit of the tube was experimentally measured over time. The KCl conductive salt solution was used as the tracer. Using the axial dispersion model, the mean retention time and dispersion number values were calculated for different flows (100–600 ml min^–1) and volumes of tracer (0.3 and 1 ml), and a quantitative description of deviations from the ideal plug flow was given.

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Keywords

plug flow, non-ideal flow, residence time distribution, mean residence time, dispersion number