Original scientific paper
https://doi.org/10.15255/KUI.2020.027
Non-ideal Flow in Model Tubes
Filip Kurt
orcid.org/0000-0002-2033-6527
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Katarina Licht
orcid.org/0000-0002-2406-8443
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Vanja Kosar
orcid.org/0000-0001-6999-8137
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
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.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Keywords
plug flow; non-ideal flow; residence time distribution; mean residence time; dispersion number
Hrčak ID:
247623
URI
Publication date:
14.12.2020.
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