Computational particle-fluid dynamics simulation of gas-solid flow in a circulating fluidized bed with air or O2/CO2 as fluidizing gas

Mukesh Upadhyay, Hoon Chae Park, Jae Gyu Hwang, Hang Seok Choi, Ha Na Jang, Yongchil Seo

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Computational particle-fluid dynamics (CPFD) simulation was carried out to examine the influence of air versus O2/CO2 as the fluidizing gas on the hydrodynamics of gas-solid flow in a cold-mode circulating fluidized bed. The CPFD simulation results were compared to the experimental data at constant superficial gas velocity, using air or mixed O2/CO2 in three different concentrations as the fluidizing gas. The simulation results showed that the model successfully captured the experimentally observed trends. A detailed statistical analysis was carried out on the transient pressure data, and results were found to vary depending on whether air or combustion gases (O2/CO2) were used for fluidization. In all cases, the flow exhibits a typical core-annular flow structure, although for O2/CO2 gas the solid volume fraction increases near the wall region. The CPFD results provided insights into the gas-solid flow behavior in a fluidized bed combustor riser under an oxy-fuel fluidizing atmosphere.

Original languageEnglish
Pages (from-to)350-362
Number of pages13
JournalPowder Technology
Volume318
DOIs
Publication statusPublished - 2017 Aug 1

Fingerprint

Flow of solids
Fluidization
Fluid dynamics
Fluidized beds
Gases
Computer simulation
Air
Fluidized bed combustors
Flow structure
Volume fraction
Statistical methods
Hydrodynamics

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

Upadhyay, Mukesh ; Park, Hoon Chae ; Hwang, Jae Gyu ; Choi, Hang Seok ; Jang, Ha Na ; Seo, Yongchil. / Computational particle-fluid dynamics simulation of gas-solid flow in a circulating fluidized bed with air or O2/CO2 as fluidizing gas. In: Powder Technology. 2017 ; Vol. 318. pp. 350-362.
@article{c03aa3cab59b43b6a07dc27668f4f6d1,
title = "Computational particle-fluid dynamics simulation of gas-solid flow in a circulating fluidized bed with air or O2/CO2 as fluidizing gas",
abstract = "Computational particle-fluid dynamics (CPFD) simulation was carried out to examine the influence of air versus O2/CO2 as the fluidizing gas on the hydrodynamics of gas-solid flow in a cold-mode circulating fluidized bed. The CPFD simulation results were compared to the experimental data at constant superficial gas velocity, using air or mixed O2/CO2 in three different concentrations as the fluidizing gas. The simulation results showed that the model successfully captured the experimentally observed trends. A detailed statistical analysis was carried out on the transient pressure data, and results were found to vary depending on whether air or combustion gases (O2/CO2) were used for fluidization. In all cases, the flow exhibits a typical core-annular flow structure, although for O2/CO2 gas the solid volume fraction increases near the wall region. The CPFD results provided insights into the gas-solid flow behavior in a fluidized bed combustor riser under an oxy-fuel fluidizing atmosphere.",
author = "Mukesh Upadhyay and Park, {Hoon Chae} and Hwang, {Jae Gyu} and Choi, {Hang Seok} and Jang, {Ha Na} and Yongchil Seo",
year = "2017",
month = "8",
day = "1",
doi = "10.1016/j.powtec.2017.06.021",
language = "English",
volume = "318",
pages = "350--362",
journal = "Powder Technology",
issn = "0032-5910",
publisher = "Elsevier",

}

Computational particle-fluid dynamics simulation of gas-solid flow in a circulating fluidized bed with air or O2/CO2 as fluidizing gas. / Upadhyay, Mukesh; Park, Hoon Chae; Hwang, Jae Gyu; Choi, Hang Seok; Jang, Ha Na; Seo, Yongchil.

In: Powder Technology, Vol. 318, 01.08.2017, p. 350-362.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Computational particle-fluid dynamics simulation of gas-solid flow in a circulating fluidized bed with air or O2/CO2 as fluidizing gas

AU - Upadhyay, Mukesh

AU - Park, Hoon Chae

AU - Hwang, Jae Gyu

AU - Choi, Hang Seok

AU - Jang, Ha Na

AU - Seo, Yongchil

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Computational particle-fluid dynamics (CPFD) simulation was carried out to examine the influence of air versus O2/CO2 as the fluidizing gas on the hydrodynamics of gas-solid flow in a cold-mode circulating fluidized bed. The CPFD simulation results were compared to the experimental data at constant superficial gas velocity, using air or mixed O2/CO2 in three different concentrations as the fluidizing gas. The simulation results showed that the model successfully captured the experimentally observed trends. A detailed statistical analysis was carried out on the transient pressure data, and results were found to vary depending on whether air or combustion gases (O2/CO2) were used for fluidization. In all cases, the flow exhibits a typical core-annular flow structure, although for O2/CO2 gas the solid volume fraction increases near the wall region. The CPFD results provided insights into the gas-solid flow behavior in a fluidized bed combustor riser under an oxy-fuel fluidizing atmosphere.

AB - Computational particle-fluid dynamics (CPFD) simulation was carried out to examine the influence of air versus O2/CO2 as the fluidizing gas on the hydrodynamics of gas-solid flow in a cold-mode circulating fluidized bed. The CPFD simulation results were compared to the experimental data at constant superficial gas velocity, using air or mixed O2/CO2 in three different concentrations as the fluidizing gas. The simulation results showed that the model successfully captured the experimentally observed trends. A detailed statistical analysis was carried out on the transient pressure data, and results were found to vary depending on whether air or combustion gases (O2/CO2) were used for fluidization. In all cases, the flow exhibits a typical core-annular flow structure, although for O2/CO2 gas the solid volume fraction increases near the wall region. The CPFD results provided insights into the gas-solid flow behavior in a fluidized bed combustor riser under an oxy-fuel fluidizing atmosphere.

UR - http://www.scopus.com/inward/record.url?scp=85020410200&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020410200&partnerID=8YFLogxK

U2 - 10.1016/j.powtec.2017.06.021

DO - 10.1016/j.powtec.2017.06.021

M3 - Article

AN - SCOPUS:85020410200

VL - 318

SP - 350

EP - 362

JO - Powder Technology

JF - Powder Technology

SN - 0032-5910

ER -