Ostroha R. Theoretical Foundations of Granule Formation Processes in a Heterogeneous Environment

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0524U000332

Thesis Registration Form

0524U000332.pdf

Applicant for

Specialization

  • 05.17.08 - Процеси та обладнання хімічної технології

11-10-2024

Specialized Academic Board

Д 55.051.04

Sumy State University

Essay

The thesis addresses the scientific problem of developing the theoretical foundations for granule formation in heterogeneous environments. Scientific-theoretical foundations have been established for determining the temperature profile in a double-layer granule, allowing for the consideration of complex interactions between granule layers, heat transfer, and the physicochemical properties of the materials used. The influence of the shell porous structure on the nature of thermal conductivity has been theoretically analyzed, including a comprehensive analysis of the relationship between pore morphology and heat transfer efficiency in the material layer. Scientific-theoretical foundations for granule formation in multistage fluidized bed apparatuses have been established, opening new possibilities for optimizing granulation processes in complex heterogeneous systems and improving the efficiency and quality of granulated product production in various industries. The design and technological parameters of the working chamber of a tray granulator with a fluidized bed have been determined and are eligible for the implementation of an active jet hydrodynamic fluidization regime. This approach enhances the efficiency of technological processes in industrial conditions and can significantly improve the competitiveness of enterprises engaged in the production of granulated products. The methodological basis for the theoretical calculation of jet breakup and theoretical determination of droplet size under the influence of intrinsic oscillations in the liquid jet has been improved. As well as the methodological basis for the theoretical analysis of the temperature profile of mineral fertilizer granules along the radius to the center of the granule has been enhanced, enabling the determination of temperature dynamics during convective cooling in the granulation tower. A methodology for thermodynamic and exergy analyses of the rational choice of certain types of coolers for granulated mineral fertilizers has also been developed. An exergy analysis has been conducted for the rational selection of mineral fertilizer granule cooler designs and are allowing for a systematic assessment of the efficiency of different cooler designs in terms of energy losses and energy use efficiency. The practical significance of the work is confirmed by practical recommendations for the implementation of a small-sized mobile unit for encapsulating mineral fertilizers based on «Alliance» LLC, as well as the development of experimental samples of organic-based granular fertilizers for «Bilopillya Agrosvit» LLC and the development of experimental samples of complex mixed (combined) fertilizers for special purposes for «Ahrarnik» LLC.

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Research papers

1. Юхименко М. П., Острога Р. О., Боцко Й. Конвективне охолодження гранульованих та зернистих матеріалів : монографія. Суми : Університетська книга, 2021. 152 с.

2. Artyukhov A., Krmela J., Artyukhova N., Ostroha R. Modeling of the Aerodisperse Systems Hydrodynamics in Devices With Directional Motion of the Fluidized Bed. Encyclopedia of Information Science and Technology, Fifth Edition : collective monograph. USA : IGI Global, 2020. P. 1289–1307.

3. Острога Р. О. , Юхименко М. П. , Вакал В. С. , Михайловський Я. Е. Капсульовані органо-мінеральні добрива пролонгованої дії. Процес одержання. Хімічна промисловість України. Київ : Союз хіміків України, 2015. № 1 (126). С. 40–44.

4. Yukhymenko M., Ostroha R., Litvinenko A., Piddubnyi Y., Zabitsky D. Research of Operating Mode of Rhombic Gravitational Pneumatic Classifier. Technology Audit and Production Reserves. Kharkiv : PC Technology Center, 2019. Vol. 2, № 3 (46). P. 4–6.

5. Al-Khyatt M. Nadhem, Skydanenko M., Ostroha R., Neshta A., Yukhymenko M., Yakhnenko S., Zabitsky D., Yesypchuk S., Moskalchuk O. Research of Plate Granulator Operation Modes in the Production of Coarse Carbamide Granules. Technology Audit and Production Reserves. Kharkiv : PC Technology Center, 2022. Vol. 1, № 3 (63). P. 6–9.

6. Михайловський Я. Е., Юхименко М. П., Острога Р. О. Охолоджувальна кристалізація персульфату амонію в кристалізаторі з псевдозрідженим шаром. Вісник Черкаського державного технологічного університету. Черкаси, 2023. № 2. С. 111–118.

7. Al-Khyatt M. Nadhem, Sklabinsky V., Ostroha R., Skydanenko M., Yukhymenko M., Bocko J., Ostroha D., Zabitsky D., Moskalchuk O., Serhiienko A. Study of Temperature Changes in Mineral Fertilizer Granules After Contact With Air in a Granulation Tower. Technology Audit and Production Reserves. Kharkiv : PC Technology Center, 2023. Vol. 4, № 3 (72). P. 6–9.

8. Yukhymenko M., Ostroha R., Artyukhov A. Hydrodynamic and Kinetic Processes of the Mineral Fertilizer Granules Encapsulating in the Multistage Device With Suspended Layer. Eastern-European Journal of Enterprise Technology, 2016. № 6/6 (84). P. 22–28.

9. Ostroha R., Yukhymenko M., Yakushko S., Artyukhov A. Investigation of the Kinetic Laws Affecting the Organic Suspension Granulation in the Fluidized Bed. Eastern-European Journal of Enterprise Technology, 2017. № 4/1 (88). P. 4–10.

10. Ostroha R., Yukhymenko M., Lytvynenko A., Bocko J., Pavlenko I. Granulation Process of the Organic Suspension: Fluidized Bed Temperature Influence on the Kinetics of the Granule Formation. Lecture Notes in Mechanical Engineering, 2019. Part F2. P. 463–471.

11. Lytvynenko A., Yukhymenko M., Pavlenko I., Pitel J., Mizakova J., Lytvynenko O., Ostroha R., Bocko J. Ensuring the Reliability of Pneumatic Classification Process for Granular Material in a Rhomb-Shaped Apparatus. Applied Sciences, 2019. 9 (8). 1604.

12. Yukhymenko M., Ostroha R., Lytvynenko A., Mikhajlovskiy Y., Bocko J. Cooling Process Intensification for Granular Mineral Fertilizers in a Multistage Fluidized Bed Device. Lecture Notes in Mechanical Engineering, 2020. 2. P. 249–257.

13. Yukhymenko M., Artyukhov A., Ostroha R., Artyukhova N., Krmela J., Bocko J. Multistage Shelf Devices with Fluidized Bed for Heat-Mass Transfer Processes: Experimental Studies and Practical Implementation. Applied Sciences, 2021. 11 (3). 1159.

14. Ostroha R., Yukhymenko M., Bocko J., Artyukhov A., Krmela J. Determining the Main Regularities in the Process of Mineral Fertilizer Granule Encapsulation in the Fluidized Bed Apparatus. Eastern-European Journal of Enterprise Technology, 2021. № 4/6 (112). P. 23–32.

15. Sklabinskyi V., Liaposhchenko O., Pitel J., Pavlenko I., Skydanenko M., Ostroha R., Yukhymenko M., Simeiko K., Demianenko M., Volf M., Starynskyi O., Yurchenko O., Mandryka O. Experimental Studies and Condition Monitoring of Auxiliary Processes in the Production of Al2O3 by Sol–Gel Technology. Processes, 2022. 10. 2090.

16. Yukhymenko M., Ostroha R., Bocko J. Design of a Shelf Pneumatic Classifier for Separating a Polydisperse Mixture of Granulated Superphosphate. Eastern-European Journal of Enterprise Technology, 2022. № 6/1 (120). P. 33–42.

17. Yurchenko O., Ostroha R., Sklabinskyi V., Gusak O., Bocko J. Formation of Liquid Droplets at the Prilling Bucket Outlet Under Free Oscillations of the Liquid Jet. Lecture Notes in Mechanical Engineering, 2023. 2. P. 177–185.

18. Sklabinskyi V., Pitel J., Skydanenko M., Simeiko K., Liaposhchenko O., Pavlenko I., Ostroha R., Yukhymenko M., Mandryka O., Storozhenko V. Pyrocarbon Coating on Granular Al2O3 for HTGR-Type Power Reactor. Coatings, 2023. 13. 1462.

19. Якушко С. І., Острога Р. О., Боцко Й. Біодобрива та біопаливо. Переваги внутрішньогосподарської утилізації сільськогосподарських відходів : монографія. Суми : Видавництво «Ярославна», 2018. 265 с.

20. Artyukhov A., Artyukhova N., Ostroha R., Yukhymenko M., Krmela J., Bocko J. Convective Drying in the Multistage Shelf Dryers: Theoretical Bases and Practical Implementation. Current Drying Processes : collective monograph. United Kingdom : IntechOpen, 2020. P. 41–61.

21. Ostroha R., Yukhymenko M., Bocko J. Technology of Obtaining Organic Granular Fertilizers: Study of Dehydration Process in Fluidized Bed : monograph. Latvia, Riga : LAP LAMBERT Academic Publishing, 2018. 52 p.

22. Ostroha R., Yukhymenko M., Mikhajlovskiy Y., Litvinenko A. Technology of Producing Granular Fertilizers on the Organic Basis. Eastern-European Journal of Enterprise Technology, 2016. № 1/6 (79). P. 19–26.

23. Ostroha R., Yukhymenko M., Lytvynenko O., Lytvynenko A. Production of Encapsulated Organo-Mineral Fertilizers in a Fluidized Bed Granulator. Acta Mechanica Slovaca, 2020. 24 (2). P. 50–55.

24. Yukhymenko M., Ostroha R., Artyukhov A., Bocko J. Effect of Temperature on Formation of Nanoporous Structure of Granule Shell in Technology of Obtaining Organo-Mineral Fertilizers. Springer Proceedings in Physics, 2020. 247. P. 159–169.

25. Lytvynenko A., Pavlenko I., Yukhymenko M., Ostroha R., Pitel J. Hydrodynamics of Two-Phase Upflow in a Pneumatic Classifier with the Variable Cross-Section. Lecture Notes in Mechanical Engineering, 2020. 2. P. 216–227.

26. Yukhymenko M., Ostroha R., Evtuhov A. Pneumatic Classification of Granular Materials in Rhomb-Shaped Apparatus. Acta Mechanica Slovaca, 2021. 25 (3). P. 46–51.

27. Yurchenko O., Sklabinskyi V., Ochowiak M., Ostroha R., Gusak O. Rational Choice of a Basket for the Rotational Vibropriller. Journal of Engineering Sciences, 2022. Vol. 9 (1). P. F16–F20.

28. Ostroha R., Yukhymenko M., Mandryka O. Hydraulic Regularities of Fluidized Bed During Encapsulation of Organo-Mineral Fertilizers. Acta Mechanica Slovaca, 2023. 27 (2). P. 12–17.

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