Numerical analysis of the energy-saving tray absorber of flue-gas desulfurization systems

Jae Min Hwang, Ssang Suk Choi, Jin Taek Chung

Research output: Contribution to journalArticle

Abstract

This study is performed to study the effect of the tray in the absorber of a flue-gas desulphurization (FGD) system by using a computational fluid dynamic (CFD) technique. Stagnant time of slurry and the pressure drop in the FGD absorber increase when a tray is used in the absorber. Stagnant time of slurry results in an increase in the desulfurization effect and a decrease in the power of the absorber recirculation pump; however, increased pressure drop requires more power of booster fan in the FGD system should be increased. The gas and slurry hydrodynamics inside the absorber is simulated using a commercial CFD code. The continuous gas phase has been modeled in an Eulerian framework, while the discrete liquid phase has been modeled by adopting a Lagrangian approach by tracking a large number of particles through the computational domain. It was observed that the power saved upon increasing the stagnant time of slurry was more than increased power with pressure drop.

Original languageEnglish
Pages (from-to)775-782
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume34
Issue number8
DOIs
Publication statusPublished - 2010 Aug 1

Fingerprint

Desulfurization
Flue gases
Pressure drop
Numerical analysis
Energy conservation
Computational fluid dynamics
Gases
Fans
Hydrodynamics
Pumps
Liquids

Keywords

  • Absorber
  • CFD
  • FGD system
  • Flue gas
  • Flue gas desulfurization
  • Tray

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Numerical analysis of the energy-saving tray absorber of flue-gas desulfurization systems. / Hwang, Jae Min; Choi, Ssang Suk; Chung, Jin Taek.

In: Transactions of the Korean Society of Mechanical Engineers, B, Vol. 34, No. 8, 01.08.2010, p. 775-782.

Research output: Contribution to journalArticle

@article{b5c7764ddf674ff8a383b6a9b0b7b801,
title = "Numerical analysis of the energy-saving tray absorber of flue-gas desulfurization systems",
abstract = "This study is performed to study the effect of the tray in the absorber of a flue-gas desulphurization (FGD) system by using a computational fluid dynamic (CFD) technique. Stagnant time of slurry and the pressure drop in the FGD absorber increase when a tray is used in the absorber. Stagnant time of slurry results in an increase in the desulfurization effect and a decrease in the power of the absorber recirculation pump; however, increased pressure drop requires more power of booster fan in the FGD system should be increased. The gas and slurry hydrodynamics inside the absorber is simulated using a commercial CFD code. The continuous gas phase has been modeled in an Eulerian framework, while the discrete liquid phase has been modeled by adopting a Lagrangian approach by tracking a large number of particles through the computational domain. It was observed that the power saved upon increasing the stagnant time of slurry was more than increased power with pressure drop.",
keywords = "Absorber, CFD, FGD system, Flue gas, Flue gas desulfurization, Tray",
author = "Hwang, {Jae Min} and Choi, {Ssang Suk} and Chung, {Jin Taek}",
year = "2010",
month = "8",
day = "1",
doi = "10.3795/KSME-B.2010.34.8.775",
language = "English",
volume = "34",
pages = "775--782",
journal = "Transactions of the Korean Society of Mechanical Engineers, B",
issn = "1226-4881",
publisher = "Korean Society of Mechanical Engineers",
number = "8",

}

TY - JOUR

T1 - Numerical analysis of the energy-saving tray absorber of flue-gas desulfurization systems

AU - Hwang, Jae Min

AU - Choi, Ssang Suk

AU - Chung, Jin Taek

PY - 2010/8/1

Y1 - 2010/8/1

N2 - This study is performed to study the effect of the tray in the absorber of a flue-gas desulphurization (FGD) system by using a computational fluid dynamic (CFD) technique. Stagnant time of slurry and the pressure drop in the FGD absorber increase when a tray is used in the absorber. Stagnant time of slurry results in an increase in the desulfurization effect and a decrease in the power of the absorber recirculation pump; however, increased pressure drop requires more power of booster fan in the FGD system should be increased. The gas and slurry hydrodynamics inside the absorber is simulated using a commercial CFD code. The continuous gas phase has been modeled in an Eulerian framework, while the discrete liquid phase has been modeled by adopting a Lagrangian approach by tracking a large number of particles through the computational domain. It was observed that the power saved upon increasing the stagnant time of slurry was more than increased power with pressure drop.

AB - This study is performed to study the effect of the tray in the absorber of a flue-gas desulphurization (FGD) system by using a computational fluid dynamic (CFD) technique. Stagnant time of slurry and the pressure drop in the FGD absorber increase when a tray is used in the absorber. Stagnant time of slurry results in an increase in the desulfurization effect and a decrease in the power of the absorber recirculation pump; however, increased pressure drop requires more power of booster fan in the FGD system should be increased. The gas and slurry hydrodynamics inside the absorber is simulated using a commercial CFD code. The continuous gas phase has been modeled in an Eulerian framework, while the discrete liquid phase has been modeled by adopting a Lagrangian approach by tracking a large number of particles through the computational domain. It was observed that the power saved upon increasing the stagnant time of slurry was more than increased power with pressure drop.

KW - Absorber

KW - CFD

KW - FGD system

KW - Flue gas

KW - Flue gas desulfurization

KW - Tray

UR - http://www.scopus.com/inward/record.url?scp=77955686016&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955686016&partnerID=8YFLogxK

U2 - 10.3795/KSME-B.2010.34.8.775

DO - 10.3795/KSME-B.2010.34.8.775

M3 - Article

AN - SCOPUS:77955686016

VL - 34

SP - 775

EP - 782

JO - Transactions of the Korean Society of Mechanical Engineers, B

JF - Transactions of the Korean Society of Mechanical Engineers, B

SN - 1226-4881

IS - 8

ER -