Mathematical Modeling Dynamics of the Process Dehydration and Granulation in the Fluidized Bed

Korniyenko, Bogdan; Ladieva, Lesya

doi:10.1007/978-3-030-55506-1_2

Cited by 14 publications

(7 citation statements)

References 11 publications

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“…Table 1 gives the results of calculations of the thickness of the shell by granulation stages in a multistage granulator of the fluidized layer according to equations (17).…”

Section: The Results Of the Analytical Calculations Based On The Mathematical Modelmentioning

confidence: 99%

“…Analysis of the obtained dependences (17) and (15) shows that the kinetics of granule growth in the suspended layer depends on the initial size of the retour particles, the specific flow rate, the density of the suspension and the granules themselves, as well as the time of applying a coating on the surface of the granule.…”

Section: Mathematical Model Of the Shell Formation Kinetics During Granule Encapsulationmentioning

confidence: 99%

“…In work [17], a mathematical model is proposed, which takes into consideration the hydrodynamics of the fluidized bed, the contact of the drop with the particles and their adhesion to the surface, as well as the kinetics of drying the solution on the surface of the particle. When building the model, the process of dehydration and granulation in the fluidized bed is considered as a heterogeneous three-phase process, during which three separate phases interact: particlesgranulation centers, the initial substanceammonium sulfate in the form of droplets, and a heat carrierair.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Ostroha

Yukhymenko

Bocko

et al. 2021

EEJET

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This paper has substantiated the expediency and prospects of obtaining organomineral fertilizers by encapsulating mineral granules with an organic suspension in fluidized bed apparatuses. An overview of existing approaches to the mathematical description of the kinetics of granule growth in granulation processes in fluidized bed apparatuses is presented. A mathematical model of the kinetics of the formation of a hard shell around granules in a fluidized bed has been built. It shows that the kinetics depend on the size of the retour particles, the specific flow rate of the suspension, the density of the suspension and granules, and the time of the process. Equations have been derived for determining the thickness of the hard shell and the specific flow rate of the suspension for individual granulation stages in a multi-stage granulator of the fluidized layer. Analytically, graphical dependences were built, which showed an increase in the thickness of the hard shell due to an increase in the specific flow rate of the suspension, the diameter of the retour particles, and the time of the encapsulation process. The equations make it possible to determine the rational regime and technological parameters of the encapsulation process in order to obtain a coating of the predefined thickness at the surface of the granules. This ensures that a quality product is obtained, with a granulometric composition in a narrower range of particle size. To obtain granules of 2.5–4 mm in size, it is necessary to carry out the process in three- or four-stage granulators of the fluidized bed at specific suspension consumption of (10–20)∙10-4 kg/(kg∙s.). It is shown that with uniform growing of granules with a constant increase in the thickness of the shell in multistage granulators, the suspension consumption decreases by 2‒3 times from the first stage to the subsequent ones. This approach reduces the operating and energy costs of the process.

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“…Table 1 gives the results of calculations of the thickness of the shell by granulation stages in a multistage granulator of the fluidized layer according to equations (17).…”

Section: The Results Of the Analytical Calculations Based On The Mathematical Modelmentioning

confidence: 99%

Section: Mathematical Model Of the Shell Formation Kinetics During Granule Encapsulationmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Ostroha

Yukhymenko

Bocko

et al. 2021

EEJET

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show abstract

“…Для розрахунку оптимальної системи керування була створена математична модель гранулятора. Складний характер процесу гранулювання в апаратах з псевдозрідженим шаром, його недостатня вивченість зумовили те, що повний математичний опис процесу є нереальним завданням [16][17][18][19][20]. У зв'язку з цим при побудові математичної моделі доводиться враховувати тільки змінні, що надають домінуючу дію на вихідні параметри процесу.…”

Section: рис1 гранулятор із псевдозрідженим шаромunclassified

Оптимальне Керування Процесом Гранулювання В Псевдозрідженому Шарі

Корнієнко¹,

Ладієва²,

Осипа³

et al. 2022

НТС

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“…Характер тепломасообміну в псевдозрідженому шарі визначає характер формування гранул та швидкість їхнього утворення, за умовами взаємодії між частинками та краплями дисперсного розчину [12][13][14][15].…”

unclassified

Оптимальна Система Управління Виробництвом Мінеральних Добрив У Грануляторі Із Пседозрідженим Шаром

Корнієнко¹,

Ладієва²,

Галата³

2022

НТС

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Mathematical Modeling Dynamics of the Process Dehydration and Granulation in the Fluidized Bed

Cited by 14 publications

References 11 publications

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Оптимальне Керування Процесом Гранулювання В Псевдозрідженому Шарі

Оптимальна Система Управління Виробництвом Мінеральних Добрив У Грануляторі Із Пседозрідженим Шаром

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