Experimental analysis of the flight design effect on the temperature distribution in rotary kilns

Seidenbecher, Jakob; Herz, Fabian; Meitzner, Claudia; Specht, Eckehard; Wirtz, S.; Scherer, Viktor; Liu, X.

doi:10.1016/j.ces.2021.116652

Cited by 9 publications

(4 citation statements)

References 52 publications

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“…The constitutive law governing the powder discharge, which involves a relationship between the volume fraction of powder contained in a lifter and the angular position of this lifter, was derived and compared with experimental results. Seidenbecher et al [7] conducted laboratory-scale experiments on the rotary drum with indirect heating (in discontinuous mode), in order to study grain behavior using various lifter flight designs. Among the different flight length ratios (L2/L1) studied, they were able to determine that increasing the flight length ratio to 1 led to improved cooling.…”

Section: Transverse Behaviormentioning

confidence: 99%

“…In their studies of the heat transfer model in the bed, Boateng and Barr [1] concluded that the ability to simulate freeboard transport phenomena is greater than the ability to accurately determine conditions in the bed. Seidenbecher et al [7] also worked on heat transfer in the rotary kiln. They took into account the axial, radial and circumferential temperature profiles in different kiln components, namely the gas phase, the solid phase (bed of solid particles) and the kiln wall.…”

Section: Heat Transfer In a Rotary Kilnmentioning

confidence: 99%

“…The gas-solid transfer essentially pertains to the heat flow received by the bed, through its upper surface, in direct contact with the gas phase. As regards its convective part, the heat flow can be expressed by relation (7) below:…”

Section: Gas-solid Transfermentioning

confidence: 99%

See 2 more Smart Citations

Rotary kiln process: An overview of physical mechanisms, models and applications

Bisulandu

Huchet²

2023

Applied Thermal Engineering

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Section: Transverse Behaviormentioning

confidence: 99%

Section: Heat Transfer In a Rotary Kilnmentioning

confidence: 99%

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Rotary kiln process: An overview of physical mechanisms, models and applications

Bisulandu

Huchet²

2023

Applied Thermal Engineering

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“…For many years, to investigate filler mixing and movement in drums, many experimental facilities and methods have been reported to optimize the structure of flights [14][15][16]. These experimental studies allow us to observe the mixing phenomenon, and provide practical knowledge of filler flow and movement in drums.…”

Section: Introductionmentioning

confidence: 99%

DEM Simulation of a Rotary Drum with Inclined Flights Using the Response Surface Methodology

Zhu

Xie

et al. 2023

Processes

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Conventional flighted rotary drums usually have flights parallel to the rotating axis, which cannot facilitate the axial motion of the materials in the drum. Here, a new type of horizontal rotary drum with inclined flights and beads was designed. Inclined flights are used to facilitate the axial movement of beads and material, while beads are used as fillers to increase the gas-liquid contact area and to crush the solid materials. We simulated the drum and studied the axial motion of fillers using the discrete element method (DEM). To improve the mass and heat transfer performance, we optimized the distribution of beads in the active phase. The effects of the rotational speed, joint angle, and inlet flow rate in the drum were investigated systematically. The individual effects were evaluated in terms of the mass of particles in the active phase (MAP) and passive phase (MPP), the percentage of the active phase occupied by the particles (OAR), and the axial speed (AS). The response surface methodology (RSM) was used to investigate the significant effects of the interaction between the parameters. The maximum MAP value can be obtained by the following parameters: a rotational speed of 37 rpm, joint angle of 139°, and inlet flow rate of 7.83 kg/s. The interaction between rotational speed and inlet flow rate is the most significant for MAP. The joint angle and inlet flow rate have a significant interactive effect on AS. Besides, the rotational speed, joint angle and inlet flow rate show an interactive effect on OAR and AS. Based on the optimization results, the effect of the inclined angle on the axial motion of beads was also evaluated. The axial motion of the beads occurs mainly in the active phase. Compared to the drum without inclined flights, the drum with inclined flights has an enhanced axial speed increased by 26%. This study will be helpful for the design and optimization of drums with inclined flights.

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An experimental setup for studying conduction and radiation heat transfer in a rotary drum

Bheda,

Tronstad,

Emady

2025

Chemical Engineering Science

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Experimental analysis of the flight design effect on the temperature distribution in rotary kilns

Cited by 9 publications

References 52 publications

Rotary kiln process: An overview of physical mechanisms, models and applications

Rotary kiln process: An overview of physical mechanisms, models and applications

DEM Simulation of a Rotary Drum with Inclined Flights Using the Response Surface Methodology

An experimental setup for studying conduction and radiation heat transfer in a rotary drum

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