Mechanism of influence of flue gas components and Ca(OH)2 on oxidation of NO over KMnO4

Guoqing Chen; Jihui Gao; Shuai Wang; Xiaolin Fu; Lili Xu; Yukun Qin

Mechanism of influence of flue gas components and Ca(OH)₂ on oxidation of NO over KMnO₄

Guoqing Chen^*
, Jihui Gao
, Shuai Wang
, Xiaolin Fu
, Lili Xu
, Yukun Qin

^*Corresponding author for this work

School of Energy Science and Engineering, Harbin Institute of Technology

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

6 Scopus citations

Abstract

The processes of oxidation of NO from flue gas of coal combustion over KMnO₄ was studied in the fixed bed reactor at a low temperature. The effect of flue gas components, such as SO₂, H₂O and O₂, on the oxidation of NO was analyzed. The influence mechanism of Ca(OH)₂ on oxidation of NO over KMnO₄ was proposed. The presence of H₂O was found to be necessary for the oxidation of NO to NO₂ over KMnO₄. SO₂ was absorbed as K₂Mn₂(SO₄)₃ by KMnO₄, which restrained the oxidation of NO. The addition of Ca(OH)₂ into KMnO₄ could increase the solid alkalinity of KMnO₄ surface and enhance the oxidation of NO. Ca(OH)₂ could weaken the inhibition of oxidation of NO by SO₂. The results of XRD analysis of the products and the components of flue gas from reactor outlet showed the oxidation mechanism of NO over KMnO₄ that the NO and SO₂ firstly reacted with KMnO₄ in the presence of H₂O, and then were transferred to alkaline site and absorbed.

Original language	English
Pages (from-to)	2314-2320
Number of pages	7
Journal	Huagong Xuebao/CIESC Journal
Volume	60
Issue number	9
State	Published - Sep 2009
Externally published	Yes

Keywords

Fixed bed reactor
KMnO
Oxidation of NO
Simultaneous removal of NO and SO

Cite this

@article{732e7f5e7aed4f55a00a84386e6441b2,

title = "Mechanism of influence of flue gas components and Ca(OH)2 on oxidation of NO over KMnO4",

abstract = "The processes of oxidation of NO from flue gas of coal combustion over KMnO4 was studied in the fixed bed reactor at a low temperature. The effect of flue gas components, such as SO2, H2O and O2, on the oxidation of NO was analyzed. The influence mechanism of Ca(OH)2 on oxidation of NO over KMnO4 was proposed. The presence of H2O was found to be necessary for the oxidation of NO to NO2 over KMnO4. SO2 was absorbed as K2Mn2(SO4)3 by KMnO4, which restrained the oxidation of NO. The addition of Ca(OH)2 into KMnO4 could increase the solid alkalinity of KMnO4 surface and enhance the oxidation of NO. Ca(OH)2 could weaken the inhibition of oxidation of NO by SO2. The results of XRD analysis of the products and the components of flue gas from reactor outlet showed the oxidation mechanism of NO over KMnO4 that the NO and SO2 firstly reacted with KMnO4 in the presence of H2O, and then were transferred to alkaline site and absorbed.",

keywords = "Fixed bed reactor, KMnO, Oxidation of NO, Simultaneous removal of NO and SO",

author = "Guoqing Chen and Jihui Gao and Shuai Wang and Xiaolin Fu and Lili Xu and Yukun Qin",

year = "2009",

month = sep,

language = "英语",

volume = "60",

pages = "2314--2320",

journal = "Huagong Xuebao/CIESC Journal",

issn = "0438-1157",

publisher = "Materials China",

number = "9",

}

TY - JOUR

T1 - Mechanism of influence of flue gas components and Ca(OH)2 on oxidation of NO over KMnO4

AU - Chen, Guoqing

AU - Gao, Jihui

AU - Wang, Shuai

AU - Fu, Xiaolin

AU - Xu, Lili

AU - Qin, Yukun

PY - 2009/9

Y1 - 2009/9

N2 - The processes of oxidation of NO from flue gas of coal combustion over KMnO4 was studied in the fixed bed reactor at a low temperature. The effect of flue gas components, such as SO2, H2O and O2, on the oxidation of NO was analyzed. The influence mechanism of Ca(OH)2 on oxidation of NO over KMnO4 was proposed. The presence of H2O was found to be necessary for the oxidation of NO to NO2 over KMnO4. SO2 was absorbed as K2Mn2(SO4)3 by KMnO4, which restrained the oxidation of NO. The addition of Ca(OH)2 into KMnO4 could increase the solid alkalinity of KMnO4 surface and enhance the oxidation of NO. Ca(OH)2 could weaken the inhibition of oxidation of NO by SO2. The results of XRD analysis of the products and the components of flue gas from reactor outlet showed the oxidation mechanism of NO over KMnO4 that the NO and SO2 firstly reacted with KMnO4 in the presence of H2O, and then were transferred to alkaline site and absorbed.

AB - The processes of oxidation of NO from flue gas of coal combustion over KMnO4 was studied in the fixed bed reactor at a low temperature. The effect of flue gas components, such as SO2, H2O and O2, on the oxidation of NO was analyzed. The influence mechanism of Ca(OH)2 on oxidation of NO over KMnO4 was proposed. The presence of H2O was found to be necessary for the oxidation of NO to NO2 over KMnO4. SO2 was absorbed as K2Mn2(SO4)3 by KMnO4, which restrained the oxidation of NO. The addition of Ca(OH)2 into KMnO4 could increase the solid alkalinity of KMnO4 surface and enhance the oxidation of NO. Ca(OH)2 could weaken the inhibition of oxidation of NO by SO2. The results of XRD analysis of the products and the components of flue gas from reactor outlet showed the oxidation mechanism of NO over KMnO4 that the NO and SO2 firstly reacted with KMnO4 in the presence of H2O, and then were transferred to alkaline site and absorbed.

KW - Fixed bed reactor

KW - KMnO

KW - Oxidation of NO

KW - Simultaneous removal of NO and SO

UR - https://www.scopus.com/pages/publications/70349237707

M3 - 文章

AN - SCOPUS:70349237707

SN - 0438-1157

VL - 60

SP - 2314

EP - 2320

JO - Huagong Xuebao/CIESC Journal

JF - Huagong Xuebao/CIESC Journal

IS - 9

ER -

Mechanism of influence of flue gas components and Ca(OH)₂ on oxidation of NO over KMnO₄

Abstract

Keywords

Other files and links

Fingerprint

Cite this