The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds

Kamranian Marnani, Abbas; Bück, Andreas; Antonyuk, Sergiy; van Wachem, Berend; Thévenin, Dominique; Tomas, Jürgen

doi:10.3390/pr7010035

Submit to this Journal Review for this Journal Edit a Special Issue

Article Menu

...

Open AccessArticle

The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds

Abbas Kamranian Marnani

^1,*,

²,

³,

¹,

⁴

and

Jürgen Tomas

^1,†

Institute of Mechanical Process Engineering, Otto von Guericke University (OvGU), Universitätsplatz 2, 39106 Magdeburg, Germany

Institute of Particle Technology (LFG), Friedrich-Alexander-University Erlangen-Nürnberg, Cauerstraße 4, 91058 Erlangen, Germany

Institute of Particle Process Engineering, Technische Universität Kaiserslautern, Gottlieb-Daimler Street, 67663 Kaiserslautern, Germany

⁴

Institute of Fluid Dynamics and Thermodynamics, OvGU, Universitätsplatz 2, 39106 Magdeburg, Germany

Author to whom correspondence should be addressed.

^†

Passed away. He has initiated and supervised the project.

Processes 2019, 7(1), 35; https://doi.org/10.3390/pr7010035

Received: 27 November 2018 / Revised: 31 December 2018 / Accepted: 5 January 2019 / Published: 11 January 2019

(This article belongs to the Special Issue Multiphase Reaction Engineering, Reactors and Processes )

View Full-Text Download PDF

Browse Figures

Citation Export

Abstract

The effect of the presence of ultra-fines (d < 10 μm) on the fluidization of a bed containing fine particles (d < 100 μm), is the subject of this paper. Practically, it can happen due to breakage or surface abrasion of the fine particles in some processes which totally changes the size distribution and also fluidization behaviour. The materials used in this study are both ground calcium carbonate (GCC); fine is CALCIT MVT 100 (Geldart’s group A) and ultra-fine is CALCIT MX 10 (group C). The experimental results for different binary mixtures of these materials (ultra-fines have 30%, 50%, or 68% of the total mixture weight) show that the physical properties of the mixtures are close to those of pure ultra-fine powders. Using mean values of the bed pressure drop calculated from several independent repetitions, the fluidization behaviour of different mixtures are compared and discussed. The fluidization behaviour of the mixtures is non-reproducible and includes cracking, channelling and agglomeration (like for pure ultra-fine powders). Increasing the portion of ultra-fine materials in the mixture causes a delay in starting partial fluidization, an increase in the bed pressure drop as well as a delay in reaching the peak point. View Full-Text

Keywords: fine particle; ultra-fine powders; binary mixtures; fluidization; agglomeration; cohesion

▼ Show Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share and Cite

MDPI and ACS Style

Kamranian Marnani, A.; Bück, A.; Antonyuk, S.; van Wachem, B.; Thévenin, D.; Tomas, J. The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds. Processes 2019, 7, 35. https://doi.org/10.3390/pr7010035

AMA Style

Kamranian Marnani A, Bück A, Antonyuk S, van Wachem B, Thévenin D, Tomas J. The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds. Processes. 2019; 7(1):35. https://doi.org/10.3390/pr7010035

Chicago/Turabian Style

Kamranian Marnani, Abbas, Andreas Bück, Sergiy Antonyuk, Berend van Wachem, Dominique Thévenin, and Jürgen Tomas. 2019. "The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds" Processes 7, no. 1: 35. https://doi.org/10.3390/pr7010035

Find Other Styles

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Abstract views Pdf views Html views

Article Menu

The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Article Access Map by Country/Region

Further Information

Guidelines

MDPI Initiatives

Follow MDPI