The present study aims to investigate the hydrodynamic behavior of gas-solid flow in a pseudo-two-dimensional cold circulation fluidized bed specifically designed to mimic a plane cut of an industrial methanol-to-olefins (MTO) bed. The solid velocity pattern was experimentally examined using the Particle Image Velocimetry with Digital Image Analysis (PIV-DIA) technique. The hydrodynamics of this pseudo-2D bed were studied using the twoPhaseEulerFoam solver in OpenFOAM, and the adjusted solver was validated through solid particle velocity and solid volume fraction comparisons, showing good agreement with experimental data. Additionally, the study explores different geometries, including symmetric and asymmetric baffles, to understand their impact on the mixing characteristics of the circulating fluidized bed for MTO. The findings highlight the significant role of asymmetric baffles in enhancing mixing behavior. Furthermore, the DIA technique was employed to study the effects of bubbles on gas-solid mixing, revealing that the low mixing region of the bed limited the diameter of bubbles.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10603125 | PMC |
| http://dx.doi.org/10.1038/s41598-023-45326-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Transforming sludge into energy: impact of blend percentage on energy recovery potential and environmental benefits of co-combustion of wastewater sludge and coal in Brazil.
Waste Manag
January 2025
Energy and Sustainability Department (EES), Federal University of Santa Catarina (UFSC), 88905-120, Araranguá, SC, Brazil. Electronic address:
Proper waste management and sustainable energy production are crucial for human development. For this purpose, this study evaluates the impact of blending percentage on energy recovery potential and environmental benefits of co-combustion of wastewater sludge and Brazilian low-rank coal. The sludge and coal were characterised in terms of their potential as fuel and co-combustion tests were carried out in a pilot-scale bubbling fluidised bed focused on the influence of the percentage of sludge mixture on the behaviour of co-combustion with coal in terms of flue gas composition and fluidised bed temperature stability.
View Article and Find Full Text PDFQuantification of Amlodipine Maleate Content in Amorphous Solid Dispersions Produced by Fluidized Bed Granulation Using Process Analytical Technology Tools.
Pharmaceutics
December 2024
Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia.
Active pharmaceutical ingredient (API) content is a critical quality attribute (CQA) of amorphous solid dispersions (ASDs) prepared by spraying a solution of APIs and polymers onto the excipients in fluid bed granulator. This study presents four methods for quantifying API content during ASD preparation. Raman and three near-infrared (NIR) process analysers were utilized to develop methods for API quantification.
View Article and Find Full Text PDFAdvancement and Innovations in Drying of Biopharmaceuticals, Nutraceuticals, and Functional Foods.
Food Eng Rev
August 2024
Department of Biosystems Engineering, University of Manitoba, E2-376, EITC, 75A Chancellor's Circle, Winnipeg, MB, R3T 2N2 Canada.
Drying is a crucial unit operation within the functional foods and biopharmaceutical industries, acting as a fundamental preservation technique and a mechanism to maintain these products' bioactive components and nutritional values. The heat-sensitive bioactive components, which carry critical quality attributes, necessitate a meticulous selection of drying methods and conditions backed by robust research. In this review, we investigate challenges associated with drying these heat-sensitive materials and examine the impact of various drying methods.
View Article and Find Full Text PDFPhysical and rheological properties of agglomerated milk protein isolate-guar gum mixtures: effect of binder type and concentration.
Food Sci Biotechnol
January 2025
Department of Food Science and Biotechnology, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang, 10326 Gyeonggi Korea.
Article Synopsis
- The study focused on how adding sugar and sugar alcohol binders in the fluidized-bed agglomeration process affects the physical properties of milk protein isolate (MPI) and guar gum (GG) mixtures.
- The agglomerated mixtures, known as AMGs, were found to have larger, more porous particles that improved solubility and flowability compared to non-agglomerated mixtures (NMG).
- However, AMGs had lower apparent viscosity and viscoelastic properties than NMG, which decreased further with more binder concentration, indicating a change in interaction between the protein and gum.
Drying kinetic models, thermodynamics, physicochemical qualities, and bioactive compounds of avocado ( Mill. Hass variety) seeds dried using various drying methods.
Heliyon
January 2025
Department of Food Science and Technology, Botswanan University of Agriculture and Natural Resources, Botswana.
Article Synopsis
- Avocados are nutrient-rich fruits that generate significant waste from seeds, which have potential applications due to their health benefits.
- Preservation methods like drying are crucial for extending the shelf life of these seeds and maintaining their bioactive compounds.
- The study tested various pre-treatments and drying methods, finding that roasting followed by hot air drying maximizes quality, while ascorbic acid treatment with fluidized bed drying optimizes nutritional retention, highlighting the seeds' value in the food industry.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!