Simulation of hydrodynamics in gas distribution devices for non-homogeneous mode of fluidization
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Дата
2022
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського
Анотація
An increase in the intensity of diffusion-controlled processes during granulation is provided by apparatuses with nonhomogeneous fluidization, the hydrodynamics of which significantly depends on the structural features of the
granulator chamber and the gas distributing device (GDD). The main problem is the formation of stagnant zones on
the working surface of GDD, which, when supplying a coolant with temperature that exceeds the melting point of
granules, leads to the melting of solids and the termination of the process.
In this work, the simulation of hydrodynamics in the granulator chamber was carried out using SolidWorks 2022 SP2
for 4 types of gas distribution devices (GDD) of different configurations with different values of the cross-section
coefficient of GDD.
The analysis of the simulation results shows that the most significant influence on the hydrodynamic activity index
near the surface of GDD iha has the cross-section coefficient of GDD , since even an insignificant increase in the
value of φ from 3.0 to 3.5% leads to a significant decrease in the hydrodynamic activity index iha by at least 1.4 times
for all considered types of GDD. The simulation of hydrodynamics was carried out without taking into account the
presence of solid granular material in the granulator chamber and near the surface of GDD plate.
Опис
Ключові слова
fluidization, granulation, hydrodynamics, gas distribution device, heat transfer, mass transfer, volumetric mixing, jet-pulsating fluidization, псевдозрідження, грануляція, гідродинаміка, газорозподільний пристрій, теплообмін, масообмін, об’ємне перемішування, струменево-пульсаційне псевдозрідження
Бібліографічний опис
Simulation of hydrodynamics in gas distribution devices for non-homogeneous mode of fluidization / Yaroslav Kornienko, Serhii Haidai, Pavlo Yevziutin, Oleksandr Sameliuk // Вісник НТУУ «КПІ ім. Ігоря Сікорського». Серія «Хімічна інженерія, екологія та ресурсозбереження». – 2022. – № 3 (21). – С. 9-22. – Бібліогр.: 30 назв.