Study on the mixing performance of static mixers in selective catalytic reduction (SCR) systems

Xinna Tian, Youhong Xiao, Peilin Zhou, Wenping Zhang, Zhenhao Chu, Wei Zheng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Selective catalytic reduction (SCR) is a promising technique for reducing nitrogen oxide (NOx) emissions from diesel engines. Static mixers are widely used in SCR systems before reactors to promote the mixing of ammonia and exhaust streams. This work aims to investigate the effects of the location of static mixers and the volume ratio of two species on mixing quality using the computational fluid dynamics (CFD) method. The simulation results show that a more homogenous ammonia distribution can be achieved at the exit of the pipe if static mixers are placed close to the ammonia injection point or if more ammonia is injected. Another phenomenon found in the study is that the mixing performance of an identical static mixer may behave discrepantly under different flow conditions if using B and C as the evaluating indexes for mixing homogenization.
LanguageEnglish
Pages57-60
Number of pages4
JournalJournal of Marine Engineering & Technology
Volume4
Issue number2
DOIs
Publication statusPublished - 26 Nov 2015

Fingerprint

Selective catalytic reduction
Ammonia
Nitrogen oxides
Diesel engines
Computational fluid dynamics
Pipe

Keywords

  • selective catalytic reduction (SCR)
  • static mixers
  • CFD
  • nitrogen oxide emissions
  • diesel engines
  • computational fluid dynamics
  • ammonia distribution

Cite this

Tian, Xinna ; Xiao, Youhong ; Zhou, Peilin ; Zhang, Wenping ; Chu, Zhenhao ; Zheng, Wei. / Study on the mixing performance of static mixers in selective catalytic reduction (SCR) systems. In: Journal of Marine Engineering & Technology. 2015 ; Vol. 4, No. 2. pp. 57-60.
@article{14b5daccbad54bdcb6bd8bacfbf369e7,
title = "Study on the mixing performance of static mixers in selective catalytic reduction (SCR) systems",
abstract = "Selective catalytic reduction (SCR) is a promising technique for reducing nitrogen oxide (NOx) emissions from diesel engines. Static mixers are widely used in SCR systems before reactors to promote the mixing of ammonia and exhaust streams. This work aims to investigate the effects of the location of static mixers and the volume ratio of two species on mixing quality using the computational fluid dynamics (CFD) method. The simulation results show that a more homogenous ammonia distribution can be achieved at the exit of the pipe if static mixers are placed close to the ammonia injection point or if more ammonia is injected. Another phenomenon found in the study is that the mixing performance of an identical static mixer may behave discrepantly under different flow conditions if using B and C as the evaluating indexes for mixing homogenization.",
keywords = "selective catalytic reduction (SCR), static mixers, CFD, nitrogen oxide emissions, diesel engines, computational fluid dynamics, ammonia distribution",
author = "Xinna Tian and Youhong Xiao and Peilin Zhou and Wenping Zhang and Zhenhao Chu and Wei Zheng",
note = "The Version of Record of this manuscript has been published and is available in Journal of Marine Engineering & Technology 26/11/2015. http://www.tandfonline.com/10.1080/20464177.2015.1096615",
year = "2015",
month = "11",
day = "26",
doi = "10.1080/20464177.2015.1096615",
language = "English",
volume = "4",
pages = "57--60",
journal = "Journal of Marine Engineering & Technology",
issn = "2046-4177",
number = "2",

}

Study on the mixing performance of static mixers in selective catalytic reduction (SCR) systems. / Tian, Xinna; Xiao, Youhong; Zhou, Peilin; Zhang, Wenping; Chu, Zhenhao; Zheng, Wei.

In: Journal of Marine Engineering & Technology, Vol. 4, No. 2, 26.11.2015, p. 57-60.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Study on the mixing performance of static mixers in selective catalytic reduction (SCR) systems

AU - Tian, Xinna

AU - Xiao, Youhong

AU - Zhou, Peilin

AU - Zhang, Wenping

AU - Chu, Zhenhao

AU - Zheng, Wei

N1 - The Version of Record of this manuscript has been published and is available in Journal of Marine Engineering & Technology 26/11/2015. http://www.tandfonline.com/10.1080/20464177.2015.1096615

PY - 2015/11/26

Y1 - 2015/11/26

N2 - Selective catalytic reduction (SCR) is a promising technique for reducing nitrogen oxide (NOx) emissions from diesel engines. Static mixers are widely used in SCR systems before reactors to promote the mixing of ammonia and exhaust streams. This work aims to investigate the effects of the location of static mixers and the volume ratio of two species on mixing quality using the computational fluid dynamics (CFD) method. The simulation results show that a more homogenous ammonia distribution can be achieved at the exit of the pipe if static mixers are placed close to the ammonia injection point or if more ammonia is injected. Another phenomenon found in the study is that the mixing performance of an identical static mixer may behave discrepantly under different flow conditions if using B and C as the evaluating indexes for mixing homogenization.

AB - Selective catalytic reduction (SCR) is a promising technique for reducing nitrogen oxide (NOx) emissions from diesel engines. Static mixers are widely used in SCR systems before reactors to promote the mixing of ammonia and exhaust streams. This work aims to investigate the effects of the location of static mixers and the volume ratio of two species on mixing quality using the computational fluid dynamics (CFD) method. The simulation results show that a more homogenous ammonia distribution can be achieved at the exit of the pipe if static mixers are placed close to the ammonia injection point or if more ammonia is injected. Another phenomenon found in the study is that the mixing performance of an identical static mixer may behave discrepantly under different flow conditions if using B and C as the evaluating indexes for mixing homogenization.

KW - selective catalytic reduction (SCR)

KW - static mixers

KW - CFD

KW - nitrogen oxide emissions

KW - diesel engines

KW - computational fluid dynamics

KW - ammonia distribution

UR - http://www.tandfonline.com/toc/tmar20/current

U2 - 10.1080/20464177.2015.1096615

DO - 10.1080/20464177.2015.1096615

M3 - Article

VL - 4

SP - 57

EP - 60

JO - Journal of Marine Engineering & Technology

T2 - Journal of Marine Engineering & Technology

JF - Journal of Marine Engineering & Technology

SN - 2046-4177

IS - 2

ER -