Fluidization and mixing behaviors of Geldart groups A, B and C particles assisted by vertical vibration in fluidized bed

Jae Rang Lee; Kang San Lee; Naim Hasolli; Young Ok Park; Kwan Young Lee; Yong Ha Kim

doi:10.1016/j.cep.2020.107856

Fluidization and mixing behaviors of Geldart groups A, B and C particles assisted by vertical vibration in fluidized bed

Jae Rang Lee, Kang San Lee, Naim Hasolli, Young Ok Park, Kwan Young Lee, Yong Ha Kim

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Geldart groups A (NiO – 1300 μm, green), B (MoO₃ - 480 μm, white), and C (NiO – 30 μm, gray color and MoS₂ – 25 μm, black) particles were used in a transparent, acrylic fluidized bed reactor. The experiment was carried out for four cases by setting the position of the particles injected in the reactor as a variable. For these cases, Geldart group C particles (which are typically difficult to fluidize) were included. When easily fluidizable particles were placed at the bottom of the fluidized bed reactor, particle circulation and bubbling occurred. Channeling occurred when there were particles that were difficult to fluidize. Homogeneous fluidization was possible with vibration when channeling occurred. With the increasing vibration frequency, the pressure drop increased, and the minimum fluidization velocity decreased. The occurrence of channeling via vibration resulted in a high mixing index and variations in the pressure drop.

Original language	English
Article number	107856
Journal	Chemical Engineering and Processing - Process Intensification
Volume	149
DOIs	https://doi.org/10.1016/j.cep.2020.107856
Publication status	Published - 2020 Mar

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20172010106310 ).

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Channeling
Fluidized bed reactor
Geldart group
Mixing
Vibration

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Energy Engineering and Power Technology
Industrial and Manufacturing Engineering

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10.1016/j.cep.2020.107856

Cite this

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title = "Fluidization and mixing behaviors of Geldart groups A, B and C particles assisted by vertical vibration in fluidized bed",

abstract = "Geldart groups A (NiO – 1300 μm, green), B (MoO3 - 480 μm, white), and C (NiO – 30 μm, gray color and MoS2 – 25 μm, black) particles were used in a transparent, acrylic fluidized bed reactor. The experiment was carried out for four cases by setting the position of the particles injected in the reactor as a variable. For these cases, Geldart group C particles (which are typically difficult to fluidize) were included. When easily fluidizable particles were placed at the bottom of the fluidized bed reactor, particle circulation and bubbling occurred. Channeling occurred when there were particles that were difficult to fluidize. Homogeneous fluidization was possible with vibration when channeling occurred. With the increasing vibration frequency, the pressure drop increased, and the minimum fluidization velocity decreased. The occurrence of channeling via vibration resulted in a high mixing index and variations in the pressure drop.",

keywords = "Channeling, Fluidized bed reactor, Geldart group, Mixing, Vibration",

author = "Lee, {Jae Rang} and Lee, {Kang San} and Naim Hasolli and Park, {Young Ok} and Lee, {Kwan Young} and Kim, {Yong Ha}",

note = "Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20172010106310 ). Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

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AU - Lee, Jae Rang

AU - Lee, Kang San

AU - Hasolli, Naim

AU - Park, Young Ok

AU - Lee, Kwan Young

AU - Kim, Yong Ha

N1 - Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20172010106310 ). Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/3

Y1 - 2020/3

N2 - Geldart groups A (NiO – 1300 μm, green), B (MoO3 - 480 μm, white), and C (NiO – 30 μm, gray color and MoS2 – 25 μm, black) particles were used in a transparent, acrylic fluidized bed reactor. The experiment was carried out for four cases by setting the position of the particles injected in the reactor as a variable. For these cases, Geldart group C particles (which are typically difficult to fluidize) were included. When easily fluidizable particles were placed at the bottom of the fluidized bed reactor, particle circulation and bubbling occurred. Channeling occurred when there were particles that were difficult to fluidize. Homogeneous fluidization was possible with vibration when channeling occurred. With the increasing vibration frequency, the pressure drop increased, and the minimum fluidization velocity decreased. The occurrence of channeling via vibration resulted in a high mixing index and variations in the pressure drop.

AB - Geldart groups A (NiO – 1300 μm, green), B (MoO3 - 480 μm, white), and C (NiO – 30 μm, gray color and MoS2 – 25 μm, black) particles were used in a transparent, acrylic fluidized bed reactor. The experiment was carried out for four cases by setting the position of the particles injected in the reactor as a variable. For these cases, Geldart group C particles (which are typically difficult to fluidize) were included. When easily fluidizable particles were placed at the bottom of the fluidized bed reactor, particle circulation and bubbling occurred. Channeling occurred when there were particles that were difficult to fluidize. Homogeneous fluidization was possible with vibration when channeling occurred. With the increasing vibration frequency, the pressure drop increased, and the minimum fluidization velocity decreased. The occurrence of channeling via vibration resulted in a high mixing index and variations in the pressure drop.

KW - Channeling

KW - Fluidized bed reactor

KW - Geldart group

KW - Mixing

KW - Vibration

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Fluidization and mixing behaviors of Geldart groups A, B and C particles assisted by vertical vibration in fluidized bed

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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