Special Issue "Optimization of Operations and Processes in Chemical Engineering Involving Fluidization"

A special issue of ChemEngineering (ISSN 2305-7084).

Deadline for manuscript submissions: closed (30 September 2021).

Special Issue Editor

Prof. Dr. Cataldo De Blasio
E-Mail Website
Guest Editor
Faculty of Science and Engineering, Energy Technology, Åbo Akademi University, 20500 Turku, Finland
Interests: energy and process technology; chemical engineering; biomass gasification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear researchers and colleagues,

I welcome you to this special issue built around the general topic “Optimization of operations and processes in Chemical Engineering involving Fluidization”. The special issue is meant to contribute to our scientific knowledge in regards to technologies for which the main chemical/physical aspect is Fluidization. This phenomenon is central to many processes; just to mention some of them, we have: Fluidized Bed Combustion, Flue Gas Desulfurization, Biogas Production, Mineral Sorting, Catalytic Fluidized Beds, Particles’ coating, Metallurgy.

More generally and always centered on the topic of Fluidization, the issue would include Multi-Phase Systems (not only gas-liquid-solid), Mixing and Resuspension, Nano Fluids, CFD, Computer Aided Process Engineering, Chemical Kinetics and Catalysis. In addition to more theoretical Mass Transport aspects like intramolecular forces, surface tension, electrical interactions and biotechnological processes.

Emphasis will be given to contributions showing tangible evidence of added value in regards to the most recent literature. The issue welcomes investigations done by means of highly accurate instrumentations like, for instance, Electrical Resistance Tomography, Radioactive Particle Tracking, Laser Diffraction and related.

Prof. Cataldo De Blasio
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. ChemEngineering is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Fluidization
  • Process intensification
  • Particulate Systems
  • Catalytic Reactors
  • Dissolution
  • Nanomaterials
  • Biotechnology
  • Computer Aided Chemical Engineering
  • Tomography
  • Particle Tracking
  • Diffractometry
  • Laser
  • Particle Interactions
  • Mathematical Modeling
  • Z-potential

Published Papers (2 papers)

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Research

Article
Comparison of the Fluidized State Stability from Radioactive Particle Tracking Results
ChemEngineering 2021, 5(4), 65; https://doi.org/10.3390/chemengineering5040065 - 01 Oct 2021
Viewed by 401
Abstract
Currently, various industrial processes are carried out in fluidized bed reactors. Knowing its internal dynamics is fundamental for the intensification of these processes. This work assesses the motion of fluidized calcium alginate spheres under the influence of an upward fluid flow within a [...] Read more.
Currently, various industrial processes are carried out in fluidized bed reactors. Knowing its internal dynamics is fundamental for the intensification of these processes. This work assesses the motion of fluidized calcium alginate spheres under the influence of an upward fluid flow within a 1.2 m high and 0.1 m inner diameter acrylic column. The liquid–solid fluidized bed was compared with a gas–liquid–solid fluidized bed operation mode in terms of mixing behavior. The radioactive particle tracking technique is a proper methodology to study the internal dynamics of these kinds of equipment. Data gathered were analyzed with Shannon entropy as a dynamic mixing measure. Mixing times were found to be between 1 and 2.5 seconds for both fluidization modes. The liquid–solid fluidized bed presents a rather smooth mixing time profile along the column. On the other hand, the gas–liquid–solid fluidized bed showed high sensitivity of entropy production with height, reaching a sharp tendency break at the second quartile of the column. The Glansdorff–Prigogine stability measure can accurately capture flow regime transitions of the gas–liquid–solid fluidized bed, allowing it to be used to construct reliable operative windows for fluidization equipment. Full article
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Article
Design and Investigation of a 3D-Printed Micro-Fluidized Bed
ChemEngineering 2021, 5(3), 62; https://doi.org/10.3390/chemengineering5030062 - 13 Sep 2021
Viewed by 797
Abstract
Micro-fluidized bed has aroused much attention due to its low-cost, intensified-process and fast-screening properties. In this paper, a micro-fluidized bed (15 × 15 mm in cross-section) was designed and fabricated with the use of the stereolithography printing technique, for the investigation of bubbles’ [...] Read more.
Micro-fluidized bed has aroused much attention due to its low-cost, intensified-process and fast-screening properties. In this paper, a micro-fluidized bed (15 × 15 mm in cross-section) was designed and fabricated with the use of the stereolithography printing technique, for the investigation of bubbles’ hydrodynamics and comparison of the solids (3D-printed particles VS fungal pellets) fluidization characteristics. In a liquid–gas system, bubble flow regime started from mono-dispersed homogeneous regime, followed by poly-dispersed homogeneous regime, transition bubble regime and heterogeneous bubble regime with increasing gas flowrates from 3.7 mL/min to 32.7 mL/min. The impacts from operating parameters such as gas flowrate, superficial liquid velocity and gas sparger size on bubble size, velocity and volume fraction have been summarized. In liquid–solid fluidization, different solid fluidization regimes for both particles bed and pellets bed were identified. From the bed expansion results, much higher Umf of 7.8 mm/s from pellets fluidization was observed compared that of 2.3 mm/s in particles fluidization, because the hyphal structures of fungal pellets increased surface friction but also tended to agglomerate. The similar R–Z exponent n (5.7 and 5.5 for pellets and particles, respectively) between pellets and particles was explained by the same solid diameter, but much higher Ut of 436 µm/s in particles bed than that of 196 µm/s in pellets bed is a consequence of the higher density of solid particles. This paper gives insights on the development of MFB and its potential in solid processing. Full article
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