Thermal-fluid characteristics on near wall of gas-solid fluidized bed reactor

Moon, Hokyu; Choi, Seungyeong; Park, Yong Ki; Cho, Hyung Hee

doi:10.1016/j.ijheatmasstransfer.2017.06.125

Cited by 10 publications

(3 citation statements)

References 44 publications

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“…Several fluidized bed reactors are currently in use for multiple applications in chemical and engineering industries; such as a sprouted fluidized bed reactor of the literature by, 41 like that of continuous stirred tanks fluidized bed reactors, 42 tubular loop reactors, 43 fluidized bed reactors, 44 circulating fluidized bed reactors, 45 transport fluidized beds reactors, and fluidized bed zinc electrodes as other types widely in use for different electroplating purposes within batteries cells.…”

Section: Fluidized Bed Zinc-reactors (Electrodes)mentioning

confidence: 99%

Practical Development of a ZnBr2 Flow Battery with a Fluidized Bed Anode Zinc-Electrode

Adelusi

Amaechi

Andrieux

et al. 2020

J. Electrochem. Soc.

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The penetration of renewable sources (solar and wind power) into the power system network has been increasing in the recent years. As a result of this, there have been serious concerns over reliable and satisfactory operation of the power systems. One of the solutions being proposed to improve the reliability and performance of these systems is to integrate energy storage devices into the power system network. Zinc-bromine batteries systems among other energy storage technologies has appeared as one of the best options. This paper presents the performance of three different electrodes feeder materials (carbon, nickel and a titanium) coupled and investigated within a fabricated ZnBr2 cell system via numerical modelling, DDPM+DEM model in ANSYS Fluent to simulate an incorporated anode zinc-electrode and COMSOL Multiphysics for the electrochemical behavior of the cell. After introducing briefly other alternatives to store energy, ZnBr2 cell systems, and its mode of operation were then discussed, before focusing on the numerical modelling and simulation and the laboratory experiments. Several extensive electrochemical experiments were implemented on the cell to achieve fast deposition of zinc onto the electrode surface during charge and fast dissolution during discharge for high performance. The mechanical action of the fluidised design of electrode is intended to improve deposit morphology, obviate the risk of dendrite growth and provide high transport rates of reactant to and from the active electrode surface. In conclusion, this paper has analyzed electrochemical techniques like chronopotentiometry, cyclic voltammetry (CV), and electrochemical impedance spectroscopy that were used to understand the behavior of the zinc bromide cells at a particular flow rate of 166.7cm 3 min −1 required to give good fluidization of the anode.

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Section: Fluidized Bed Zinc-reactors (Electrodes)mentioning

confidence: 99%

Practical Development of a ZnBr2 Flow Battery with a Fluidized Bed Anode Zinc-Electrode

Adelusi

Amaechi

Andrieux

et al. 2020

J. Electrochem. Soc.

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“…However, problems such as particle agglomeration may occur owing to high reaction temperature, static electricity, and other reasons. 37 Agglomeration can destroy the quality of a polyethylene product and reduce the performance of the reactor. When it is serious, it will stop the reactor and cause serious property damage.…”

Section: ■ Experimental Results and Discussionmentioning

confidence: 99%

“…The gas–solid fluidized bed has good solid processing ability, outstanding heat and mass transfer characteristics, as well as uniform temperature distribution; hence, it is widely used in the production of polyethylene. However, problems such as particle agglomeration may occur owing to high reaction temperature, static electricity, and other reasons . Agglomeration can destroy the quality of a polyethylene product and reduce the performance of the reactor.…”

Section: Resultsmentioning

confidence: 99%

Fault Detection with Data Imbalance Conditions Based on the Improved Bilayer Convolutional Neural Network

Jing

Zhang

Zhou

2020

Ind. Eng. Chem. Res.

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Fault detection is considered a significant and urgent issue in industrial processes. However, faults rarely occur, resulting in an imbalance between normal data and fault data. This paper presents a novel fault-detection model based on wavelet packet decomposition and a bilayer convolutional neural network (WPD-biCNN) within imbalanced data conditions. WPD helps eliminate the adverse impact of data scarcity by mining information in multiple frequency domains rather than generating new data. More rich information in various time and frequency scales is obtained from collected fault samples, which increases the fault information and can help address the imbalance. The improved bilayer convolutional neural network combining local and full convolution stages is employed to extract features and detect fault. The experimental results of an actual polyethylene production process reveal that the proposed method achieves effective performance in the fault detection of agglomeration. In particular, the proposed method exhibits an excellent classification ability for imbalanced data sets with less fault data and more normal data.

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Heat transfer and gas-solid behaviors in pneumatic transport reactor used of carbon capture system

Choi

Yoo²,

Moon

et al. 2017

J Mech Sci Technol

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Thermal-fluid characteristics on near wall of gas-solid fluidized bed reactor

Cited by 10 publications

References 44 publications

Practical Development of a ZnBr2 Flow Battery with a Fluidized Bed Anode Zinc-Electrode

Practical Development of a ZnBr2 Flow Battery with a Fluidized Bed Anode Zinc-Electrode

Fault Detection with Data Imbalance Conditions Based on the Improved Bilayer Convolutional Neural Network

Heat transfer and gas-solid behaviors in pneumatic transport reactor used of carbon capture system

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