Thermal bed mixing in rotary drums for different operational parameters

Nafsun, Aainaa Izyan; Herz, Fabian; Specht, Eckehard; Komossa, H.; Wirtz, S.; Scherer, Viktor; Liu, X.

doi:10.1016/j.ces.2016.11.005

Cited by 34 publications

(9 citation statements)

References 33 publications

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“…The handling and processing of granular materials are important in various industries [25][26][27]; thus, they must be efficiently and economically handled. Several scholars have studied the dynamic behavior of granular flows [28][29][30].…”

Section: Shih-haomentioning

confidence: 99%

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO₂ Capture System

et al. 2023

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The calcium looping process has become a promising technology for reducing carbon dioxide emissions because of its lower energy consumption compared with other methods. A three‐dimensional multifluid model based on the kinetic theory was employed to study the movement of granules in the calciner. The results demonstrated that an increase in the rotation speed and inclination angle of the calciner led to a decrease in the residence time of the particles. Simultaneously, the probability of the particles being heated was reduced. Insufficiently calcined particles reduce the carbon capture capacity in the next cycle; therefore, suitable operating conditions and mechanism designs are very important.

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Section: Shih-haomentioning

confidence: 99%

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO₂ Capture System

et al. 2023

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“…Вторым важным обстоятельством является анализ контактной составляющей теплообмена. Типовые модели теплового взаимодействия твердых мелкодисперсных материалов имеют существенные различия с картиной взаимодействия сланца и теплоносителя в реакторе в условиях выделения ПГС [11]. В частности они предполагают продолжительный тепловой контакт частиц, который отсутствует в барабанном реакторе ввиду постоянного перемешивания и поступательного движения вперед, а также активной фильтрации продуктов полукоксования.…”

Section: рис 1 схема взаимодействия частиц сланца и золы в барабаннunclassified

The mathematical description of process of heat exchange particles of oil shale and ash the coolant in the semi-coking conditions in a rotating drum reactor installation with solid heat carrier

Селиванов

Batrakov

Мракин

et al. 2020

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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Резюме: В статье рассматриваются вопросы моделирования процесса теплообмена в барабанном реакторе установки полукоксования горючего сланца с твердым теплоносителем между частицами золы и сланца в условиях постоянного выделения парогазовых продуктов. Выявлена доминирующая роль конвективной составляющей процесса и получены кривые прогрева частиц сланца с учетом эндотермического эффекта.Установлено, что наиболее мелкая фракция топлива прогревается в течение 30-60 секунд и в дальнейшем служит источником теплоты для остальных фракций. В интервале 400-600 секунд завершается прогрев самой крупной фракции. Дальнейшее пребывание сланцезольной смеси в реакторе вызвано отставанием скорости процесса термического разложения от теплообмена, а снижение температуры на 20-25 0 С наличием эндотермического эффекта разложения органического вещества.Ключевые слова: горючий сланец, полукоксование, теплообмен, твердый теплоноситель, барабанный реактор.Благодарности: Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта №17-08-00295 «А».

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“…4 To explore the particle behavior in the rotating drum, particle image velocimetry, 5 high-speed camera, 6 magnetic resonance imaging, 7 and radioactive particle tracking 8 have been adopted by researchers. In addition, some methods such as infrared thermography 9 and thermocouple intrusion detection 10 have also been used to study the heat transfer of particles in the rotating drum. In recent years, with the continuous improvement of computer performance, the discrete element method (DEM) has become a popular method to study particle system.…”

Section: Introductionmentioning

confidence: 99%

Study on Segregation and Heat Transfer of Polydisperse Particles in a Three-Dimensional Rotating Drum by Using the DEM

Zhang

Liu

et al. 2023

Ind. Eng. Chem. Res.

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The segregation and heat transfer of polydisperse particles in the rotating drum have an important impact on many industrial fields, and the theory is not completely clear. Based on the verified discrete element method model, the segregation and heat transfer of polydisperse particles in the rotating drum indirectly heated by the side wall are studied. The results show that the polydisperse particles form the segregation structure of the radial core and axial band in the rolling regime rotating drum. The comparison with monodisperse particles indicates that the heat transfer of polydisperse particles is influenced by the segregation structure. Small changes in rotation speed and filling level in the rolling regime do not alter the particle segregation and heat transfer structure. The addition of lifters is an effective means to reduce particle segregation and improve the heat transfer effect. This work provides a reference for revealing the segregation and heat transfer theory of polydisperse particles in the rotating drum.

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Thermal bed mixing in rotary drums for different operational parameters

Cited by 34 publications

References 33 publications

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO₂ Capture System

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO₂ Capture System

The mathematical description of process of heat exchange particles of oil shale and ash the coolant in the semi-coking conditions in a rotating drum reactor installation with solid heat carrier

Study on Segregation and Heat Transfer of Polydisperse Particles in a Three-Dimensional Rotating Drum by Using the DEM

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Thermal bed mixing in rotary drums for different operational parameters

Cited by 34 publications

References 33 publications

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO2 Capture System

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO2 Capture System

The mathematical description of process of heat exchange particles of oil shale and ash the coolant in the semi-coking conditions in a rotating drum reactor installation with solid heat carrier

Study on Segregation and Heat Transfer of Polydisperse Particles in a Three-Dimensional Rotating Drum by Using the DEM

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Product

Resources

About

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO₂ Capture System

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO₂ Capture System