Study of Contact Drying Granular Materials in Fluidized Bed Dryers

Gayvas, Bogdana; Markovych, Bogdan; Dmytruk, Anatolii; Dmytruk, Veronika; Kushka, Beata; Senkovych, Olha

doi:10.1109/diped59408.2023.10269464

2023 IEEE XXVIII International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIP 2023

DOI: 10.1109/diped59408.2023.10269464

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Study of Contact Drying Granular Materials in Fluidized Bed Dryers

Bogdana Gayvas,

Bogdan Markovych,

Anatolii Dmytruk

et al.

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2024

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Cited by 2 publications

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The methods of optimization and regulation of the convective drying process of materials in drying installations

Gayvas,

Markovych,

Dmytruk

et al. 2024

Math. Model. Comput.

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In this work, based on fundamental principles well-established in the field of drying technology, optimization for the process of material drying involves controlling the mechanism of moisture transfer by influencing diffusion and thermo-diffusion processes. Based on the Kirpichov criterion, a quantitative measure of moisture transfer dynamics is ensured, while Nusselt numbers help control temperature gradient and efficient moisture removal. The article proposes the use of empirical relationships between Nusselt numbers and problem parameters such as moisture content, temperature, and airflow velocity. Optimizing drying parameters based on the proposed equations can contribute to improving drying quality, reducing process time, and lowering energy consumption. The proposed methods of moisture and temperature gradient control within the material are sustainable and allow us to achieve uniform drying without causing excessive stresses or deformation.

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The methods of optimization and regulation of the convective drying process of materials in drying installations

Gayvas,

Markovych,

Dmytruk

et al. 2024

Math. Model. Comput.

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Modeling mass transfer processes in multicomponent capillary-porous bodies under mixed boundary conditions

Dmytruk

2024

Math. Model. Comput.

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In this study, we present a physicomathematical model for convective drying of a multicomponent body of the capillary-porous structure, considering moisture transfer dynamics at both macro and micro levels. Recognizing the impact of the material's local structure on drying processes, particularly in phase transformations, the model integrates the continuum-thermodynamic approach pioneered by Ya. Burak, Ye. Chaplya, and B. Gayvas. This approach addresses the interrelated mechanical, thermal, and diffusion processes occurring in heterogeneous, nonequilibrium systems, where local thermodynamic equilibrium assumptions allow equilibrium state descriptions by conjugate physical parameters. The unique dual-level approach captures moisture exchange between an individual grain and the grain bed, enabling realistic simulations of the drying process by directly accounting for phase transformations and material structure influences. The presented methodology allows simultaneous solving of mass transfer equations for the grain bed and individual grains, supported by numerical experimentation. The results reveal distinct moisture distribution patterns across the grain bed and within individual grains, with variations influenced by drying agent velocity. The novelty of this approach lies in its simultaneous treatment of grain-scale and bed-scale moisture transfer, providing a detailed perspective on moisture dynamics. This model has potential applications in optimizing industrial drying processes for capillary-porous materials, enhancing efficiency and cost-effectiveness.

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Study of Contact Drying Granular Materials in Fluidized Bed Dryers

Cited by 2 publications

References 10 publications

The methods of optimization and regulation of the convective drying process of materials in drying installations

The methods of optimization and regulation of the convective drying process of materials in drying installations

Modeling mass transfer processes in multicomponent capillary-porous bodies under mixed boundary conditions

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