Synergistic Promotion of SO3 Formation with SOx/NOx Coexisting in Pressurized Oxy-combustio

Xue Bin Wang; Gao Feng Dai; Grigory Yablonsky; Richard L. Axelbaum; Hou Zhang Tan

Synergistic Promotion of SO₃ Formation with SO_x/NO_x Coexisting in Pressurized Oxy-combustio

Xue Bin Wang
, Gao Feng Dai
, Grigory Yablonsky
, Richard L. Axelbaum
, Hou Zhang Tan

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

Abstract

Pressurized oxy-combustion (POC) is a promising technology that has high power generation efficiency. However, due to high pressure, partial pressure of strong acid gases (SO_x-NO_x) significantly increases, aggravating the threat of corrosion. The formation of NO₂ and SO₃ in the gas-phase and their interaction at elevated pressure have not been adequately addressed. In this study, the synergistic promotion of SO₃ and NO₂ is kinetically evaluated by the detailed mechanism(72 species and 428 reactions)and experiment data. The calculations show that the interaction of SO_x and NO_x indeed accelerates the conversion rates of NO to NO₂ and SO₂ to SO₃, and the acceleration is much stronger at elevated pressure and lower temperature. Based on ROP analysis and sensitivity analysis, we get a detail mechanism including 9 skeletal reactions, which can be used to accurately predict SO₃ and NO₂ formation in the post-flame region of pressurized oxy-combustion.

Original language	English
Pages (from-to)	223-228
Number of pages	6
Journal	Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume	41
Issue number	1
State	Published - Jan 1 2020

Keywords

Coupling mechanism
NO
Pressurized oxy-combustion
SO
Synergistic effect

Cite this

@article{5c0a40ca08924ffb8d3586706a00d7bf,

title = "Synergistic Promotion of SO3 Formation with SOx/NOx Coexisting in Pressurized Oxy-combustio",

abstract = "Pressurized oxy-combustion (POC) is a promising technology that has high power generation efficiency. However, due to high pressure, partial pressure of strong acid gases (SOx-NOx) significantly increases, aggravating the threat of corrosion. The formation of NO2 and SO3 in the gas-phase and their interaction at elevated pressure have not been adequately addressed. In this study, the synergistic promotion of SO3 and NO2 is kinetically evaluated by the detailed mechanism(72 species and 428 reactions)and experiment data. The calculations show that the interaction of SOx and NOx indeed accelerates the conversion rates of NO to NO2 and SO2 to SO3, and the acceleration is much stronger at elevated pressure and lower temperature. Based on ROP analysis and sensitivity analysis, we get a detail mechanism including 9 skeletal reactions, which can be used to accurately predict SO3 and NO2 formation in the post-flame region of pressurized oxy-combustion.",

keywords = "Coupling mechanism, NO, Pressurized oxy-combustion, SO, Synergistic effect",

author = "Wang, \{Xue Bin\} and Dai, \{Gao Feng\} and Grigory Yablonsky and Axelbaum, \{Richard L.\} and Tan, \{Hou Zhang\}",

year = "2020",

month = jan,

day = "1",

language = "English",

volume = "41",

pages = "223--228",

journal = "Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics",

issn = "0253-231X",

number = "1",

}

TY - JOUR

T1 - Synergistic Promotion of SO3 Formation with SOx/NOx Coexisting in Pressurized Oxy-combustio

AU - Wang, Xue Bin

AU - Dai, Gao Feng

AU - Yablonsky, Grigory

AU - Axelbaum, Richard L.

AU - Tan, Hou Zhang

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Pressurized oxy-combustion (POC) is a promising technology that has high power generation efficiency. However, due to high pressure, partial pressure of strong acid gases (SOx-NOx) significantly increases, aggravating the threat of corrosion. The formation of NO2 and SO3 in the gas-phase and their interaction at elevated pressure have not been adequately addressed. In this study, the synergistic promotion of SO3 and NO2 is kinetically evaluated by the detailed mechanism(72 species and 428 reactions)and experiment data. The calculations show that the interaction of SOx and NOx indeed accelerates the conversion rates of NO to NO2 and SO2 to SO3, and the acceleration is much stronger at elevated pressure and lower temperature. Based on ROP analysis and sensitivity analysis, we get a detail mechanism including 9 skeletal reactions, which can be used to accurately predict SO3 and NO2 formation in the post-flame region of pressurized oxy-combustion.

AB - Pressurized oxy-combustion (POC) is a promising technology that has high power generation efficiency. However, due to high pressure, partial pressure of strong acid gases (SOx-NOx) significantly increases, aggravating the threat of corrosion. The formation of NO2 and SO3 in the gas-phase and their interaction at elevated pressure have not been adequately addressed. In this study, the synergistic promotion of SO3 and NO2 is kinetically evaluated by the detailed mechanism(72 species and 428 reactions)and experiment data. The calculations show that the interaction of SOx and NOx indeed accelerates the conversion rates of NO to NO2 and SO2 to SO3, and the acceleration is much stronger at elevated pressure and lower temperature. Based on ROP analysis and sensitivity analysis, we get a detail mechanism including 9 skeletal reactions, which can be used to accurately predict SO3 and NO2 formation in the post-flame region of pressurized oxy-combustion.

KW - Coupling mechanism

KW - NO

KW - Pressurized oxy-combustion

KW - SO

KW - Synergistic effect

UR - https://www.scopus.com/pages/publications/85081901548

M3 - Article

AN - SCOPUS:85081901548

SN - 0253-231X

VL - 41

SP - 223

EP - 228

JO - Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics

JF - Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics

IS - 1

ER -

Synergistic Promotion of SO₃ Formation with SO_x/NO_x Coexisting in Pressurized Oxy-combustio

Abstract

Keywords

Other files and links

Fingerprint

Cite this