Solid Flow in Rotary Drums with Sectional Internals: An Experimental Investigation. Issue 2 (4th January 2021)

• Record Type: Journal Article
• Authors: Priessen, Joscha; Kreutzer, Thomas; Irgat, Gizem; Behrens, Malte; Schultz, Heyko Juergen
• Is Part Of: Chemical engineering & technology. Volume 44:Issue 2(2021)
• Page Start: 300
• Page End: 309
• Publication Date: 2021-01-04
• Subjects: Axial dispersion model -- Residence time -- Rotary drum -- Rotary kiln -- Sectional internals; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.202000148
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: The influence of different internal geometries on the solid flow in rotary drums under variation of the operational parameters feed rate, slope, and rotational speed is investigated. Four different configurations of a fully optically accessible lab‐scale rotary drum are analyzed. The internals are built as sectional compartments of the cross section, referring to industrial applications. The axial dispersion model is used to calculate the mean residence times and axial dispersion coefficients. It can clearly be shown that the sectional internal geometries significantly increase mean residence times and holdups in dependence on the set of operational variables. The axial dispersion coefficients were in a comparable range with literature data. Abstract : The impact of different sectional internals on the residence time, material transport, holdup, and mixing behavior in rotary drums is investigated. A novel, innovative, optically accessible rotary drum apparatus is used to perform the measurements. The internals significantly affect the solid flow behavior in the drum. Besides residence times, the axial dispersion coefficients are evaluated.