Effect of SO2 on NO removal by calcium hydroxide

Jihui Gao; Guoqing Chen; Xiaolin Fu; Qian Du; Jianmin Gao; Yukun Qin

Effect of SO₂ on NO removal by calcium hydroxide

Jihui Gao^*
, Guoqing Chen
, Xiaolin Fu
, Qian Du
, Jianmin Gao^*
, 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

2 Scopus citations

Abstract

The effect of SO₂ on NO removal by Ca(OH)₂ was investigated at a low temperature. The influence of H₂O and O₂ on the enhancement effect of SO₂ on NO removal was analyzed. The experimental results showed that NO removal was negligible in the absence of SO₂. SO₂ could enhance NO removal. H₂O and O₂ have great influence on the enhancement of SO₂ on NO removal. NO could not be absorbed by Ca(OH)₂ in the absence of O₂, even though a high SO₂ removal could be attained. SO₂ could enhance NO removal when H₂O and O₂ were present in the flue gas simultaneously. CaSO₃, a typical desulfurization reaction product, could not oxidize NO to NO₂. The multi-molecular intermediate species, which could decompose to NO₂, was not formed from the adsorption of NO, H₂O and O₂ on the surface of absorbent. There may be some unstable intermediate species formed from the desulfurization reaction, which can accelerate the reaction of NO and O₂.

Original language	English
Pages (from-to)	2836-2842
Number of pages	7
Journal	Huagong Xuebao/CIESC Journal
Volume	61
Issue number	11
State	Published - Nov 2010

Keywords

Ca-based absorbent
NO oxidization
Removal of SO and NO

Cite this

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title = "Effect of SO2 on NO removal by calcium hydroxide",

abstract = "The effect of SO2 on NO removal by Ca(OH)2 was investigated at a low temperature. The influence of H2O and O2 on the enhancement effect of SO2 on NO removal was analyzed. The experimental results showed that NO removal was negligible in the absence of SO2. SO2 could enhance NO removal. H2O and O2 have great influence on the enhancement of SO2 on NO removal. NO could not be absorbed by Ca(OH)2 in the absence of O2, even though a high SO2 removal could be attained. SO2 could enhance NO removal when H2O and O2 were present in the flue gas simultaneously. CaSO3, a typical desulfurization reaction product, could not oxidize NO to NO2. The multi-molecular intermediate species, which could decompose to NO2, was not formed from the adsorption of NO, H2O and O2 on the surface of absorbent. There may be some unstable intermediate species formed from the desulfurization reaction, which can accelerate the reaction of NO and O2.",

keywords = "Ca-based absorbent, NO oxidization, Removal of SO and NO",

author = "Jihui Gao and Guoqing Chen and Xiaolin Fu and Qian Du and Jianmin Gao and Yukun Qin",

year = "2010",

month = nov,

language = "英语",

volume = "61",

pages = "2836--2842",

journal = "Huagong Xuebao/CIESC Journal",

issn = "0438-1157",

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}

TY - JOUR

T1 - Effect of SO2 on NO removal by calcium hydroxide

AU - Gao, Jihui

AU - Chen, Guoqing

AU - Fu, Xiaolin

AU - Du, Qian

AU - Gao, Jianmin

AU - Qin, Yukun

PY - 2010/11

Y1 - 2010/11

N2 - The effect of SO2 on NO removal by Ca(OH)2 was investigated at a low temperature. The influence of H2O and O2 on the enhancement effect of SO2 on NO removal was analyzed. The experimental results showed that NO removal was negligible in the absence of SO2. SO2 could enhance NO removal. H2O and O2 have great influence on the enhancement of SO2 on NO removal. NO could not be absorbed by Ca(OH)2 in the absence of O2, even though a high SO2 removal could be attained. SO2 could enhance NO removal when H2O and O2 were present in the flue gas simultaneously. CaSO3, a typical desulfurization reaction product, could not oxidize NO to NO2. The multi-molecular intermediate species, which could decompose to NO2, was not formed from the adsorption of NO, H2O and O2 on the surface of absorbent. There may be some unstable intermediate species formed from the desulfurization reaction, which can accelerate the reaction of NO and O2.

AB - The effect of SO2 on NO removal by Ca(OH)2 was investigated at a low temperature. The influence of H2O and O2 on the enhancement effect of SO2 on NO removal was analyzed. The experimental results showed that NO removal was negligible in the absence of SO2. SO2 could enhance NO removal. H2O and O2 have great influence on the enhancement of SO2 on NO removal. NO could not be absorbed by Ca(OH)2 in the absence of O2, even though a high SO2 removal could be attained. SO2 could enhance NO removal when H2O and O2 were present in the flue gas simultaneously. CaSO3, a typical desulfurization reaction product, could not oxidize NO to NO2. The multi-molecular intermediate species, which could decompose to NO2, was not formed from the adsorption of NO, H2O and O2 on the surface of absorbent. There may be some unstable intermediate species formed from the desulfurization reaction, which can accelerate the reaction of NO and O2.

KW - Ca-based absorbent

KW - NO oxidization

KW - Removal of SO and NO

UR - https://www.scopus.com/pages/publications/78649919614

M3 - 文章

AN - SCOPUS:78649919614

SN - 0438-1157

VL - 61

SP - 2836

EP - 2842

JO - Huagong Xuebao/CIESC Journal

JF - Huagong Xuebao/CIESC Journal

IS - 11

ER -

Effect of SO₂ on NO removal by calcium hydroxide

Abstract

Keywords

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