Enhancement effects of gas components on NO removal by calcium hydroxide

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

doi:10.1021/ie900838f

Enhancement effects of gas components on NO removal by calcium hydroxide

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

18 Scopus citations

Abstract

The NO absorption characteristic of calcium hydroxide was investigated in a fixed bed reactor system in the presence of SO₂. The effect of O₂ and H₂O on NO removal was discussed in or without the presence of SO₂. When SO₂ was excluded from the flue gas, NO removal was slight. The presence of SO₂ in the flue gas could enhance NO removal only when both of O₂ and H₂O were also present. The essence of enhancement of SO₂ on NO removal was accelerating the conversion of NO to NO₂. The desulfurization reaction product could not oxidize NO to NO₂. The bed height experiment revealed that the multimolecular intermediate species, which could decomposed in to NO₂, was not formed from the adsorption of NO, H₂O, and O₂ on the surface of absorbent. The possible reaction path proposed in paper is that there may be some unstable intermediate species formed from the desulfurization reaction, which can enhance the conversion of NO to NO₂. The presence of H₂O can enhance the presence of unstable intermediate. According to analysis, the possible unstable intermediate is the OH radical.

Original language	English
Pages (from-to)	1450-1456
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	49
Issue number	3
DOIs	https://doi.org/10.1021/ie900838f
State	Published - 3 Feb 2010
Externally published	Yes

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title = "Enhancement effects of gas components on NO removal by calcium hydroxide",

abstract = "The NO absorption characteristic of calcium hydroxide was investigated in a fixed bed reactor system in the presence of SO2. The effect of O2 and H2O on NO removal was discussed in or without the presence of SO2. When SO2 was excluded from the flue gas, NO removal was slight. The presence of SO2 in the flue gas could enhance NO removal only when both of O2 and H2O were also present. The essence of enhancement of SO2 on NO removal was accelerating the conversion of NO to NO2. The desulfurization reaction product could not oxidize NO to NO2. The bed height experiment revealed that the multimolecular intermediate species, which could decomposed in to NO2, was not formed from the adsorption of NO, H2O, and O2 on the surface of absorbent. The possible reaction path proposed in paper is that there may be some unstable intermediate species formed from the desulfurization reaction, which can enhance the conversion of NO to NO2. The presence of H2O can enhance the presence of unstable intermediate. According to analysis, the possible unstable intermediate is the OH radical.",

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

year = "2010",

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doi = "10.1021/ie900838f",

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journal = "Industrial and Engineering Chemistry Research",

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T1 - Enhancement effects of gas components on NO removal by calcium hydroxide

AU - Chen, Guoqing

AU - Gao, Jihui

AU - Wang, Shuai

AU - Fu, Xiaolin

AU - Xu, Lili

AU - Qin, Yukun

PY - 2010/2/3

Y1 - 2010/2/3

N2 - The NO absorption characteristic of calcium hydroxide was investigated in a fixed bed reactor system in the presence of SO2. The effect of O2 and H2O on NO removal was discussed in or without the presence of SO2. When SO2 was excluded from the flue gas, NO removal was slight. The presence of SO2 in the flue gas could enhance NO removal only when both of O2 and H2O were also present. The essence of enhancement of SO2 on NO removal was accelerating the conversion of NO to NO2. The desulfurization reaction product could not oxidize NO to NO2. The bed height experiment revealed that the multimolecular intermediate species, which could decomposed in to NO2, was not formed from the adsorption of NO, H2O, and O2 on the surface of absorbent. The possible reaction path proposed in paper is that there may be some unstable intermediate species formed from the desulfurization reaction, which can enhance the conversion of NO to NO2. The presence of H2O can enhance the presence of unstable intermediate. According to analysis, the possible unstable intermediate is the OH radical.

AB - The NO absorption characteristic of calcium hydroxide was investigated in a fixed bed reactor system in the presence of SO2. The effect of O2 and H2O on NO removal was discussed in or without the presence of SO2. When SO2 was excluded from the flue gas, NO removal was slight. The presence of SO2 in the flue gas could enhance NO removal only when both of O2 and H2O were also present. The essence of enhancement of SO2 on NO removal was accelerating the conversion of NO to NO2. The desulfurization reaction product could not oxidize NO to NO2. The bed height experiment revealed that the multimolecular intermediate species, which could decomposed in to NO2, was not formed from the adsorption of NO, H2O, and O2 on the surface of absorbent. The possible reaction path proposed in paper is that there may be some unstable intermediate species formed from the desulfurization reaction, which can enhance the conversion of NO to NO2. The presence of H2O can enhance the presence of unstable intermediate. According to analysis, the possible unstable intermediate is the OH radical.

UR - https://www.scopus.com/pages/publications/76049110219

U2 - 10.1021/ie900838f

DO - 10.1021/ie900838f

M3 - 文章

AN - SCOPUS:76049110219

SN - 0888-5885

VL - 49

SP - 1450

EP - 1456

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 3

ER -

Enhancement effects of gas components on NO removal by calcium hydroxide

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