Local Structure Effects on Pressure Drop in Slender Fixed Beds of Spheres. Issue 1 (9th December 2020)

• Record Type: Journal Article
• Authors: Flaischlen, Steffen; Kutscherauer, Martin; Wehinger, Gregor D.
• Other Names: Böhm Lutz guestEditor.
• Is Part Of: Chemie Ingenieur Technik. Volume 93:Issue 1/2(2021)
• Page Start: 273
• Page End: 281
• Publication Date: 2020-12-09
• Subjects: Computational fluid dynamics -- Fixed bed reactor -- Pressure drop -- Rigid body approach -- Synthetic fixed beds; Chemical engineering -- Patents -- Periodicals; Chemical engineering -- Periodicals; Chemical industry -- Periodicals; Chemistry, Technical -- Periodicals; 660.05
• DOI: 10.1002/cite.202000171
• Languages: English
• ISSNs: 0009-286X

Abstract

Abstract: For slender fixed beds, the void fraction and flow properties are complex topics. Different factors can influence the local bed structure. For statistical analysis, 2800 fixed beds have been generated and the impact of friction factor and reactor‐to‐particle diameter ratio on the distribution has been shown. With particle‐resolved computational fluid dynamics, all local structure effects are taken into account for the flow simulations. Pressure drop measurements and simulations showed that these effects can lead to areas with low flow resistance, leading to overestimated pressure drop by typical correlations up to 85 %. Abstract : Transport in slender fixed beds are influenced by the local structure. 2800 fixed bed geometries have been synthetically generated to show the impact of friction factor and reactor‐to‐particle diameter ratio on the void fraction distribution. Pressure drop measurements and CFD simulations help to identify zones with low flow resistance.