Study on adsorption of nitrogen oxide in sintering flue gas by modified activated carbon

Cai Jianyu; Peng Zhaofeng; Song Liyun; Hou Huanyu; Li Jian

doi:10.7513/j.issn.1004-7638.2021.01.013

Volume 42 Issue 1

Feb. 2021

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Cai Jianyu, Peng Zhaofeng, Song Liyun, Hou Huanyu, Li Jian. Study on adsorption of nitrogen oxide in sintering flue gas by modified activated carbon[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 75-82. doi: 10.7513/j.issn.1004-7638.2021.01.013

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Cai Jianyu, Peng Zhaofeng, Song Liyun, Hou Huanyu, Li Jian. Study on adsorption of nitrogen oxide in sintering flue gas by modified activated carbon[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 75-82. doi: 10.7513/j.issn.1004-7638.2021.01.013

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Study on adsorption of nitrogen oxide in sintering flue gas by modified activated carbon

doi: 10.7513/j.issn.1004-7638.2021.01.013

1.
Key Laboratory of Beijing on Regional Air Pollution Control of Beijing University of Technology, Beijing 100124, China
2.
HBIS Company Limited, Shijiazhuang 050023, Hebei, China
3.
HBIS Steel Technology Research Institute, Shijiazhuang 050023 ,Hebei, China

Received Date: 2020-08-05
Publish Date: 2021-02-10

Abstract

Abstract

Potash (K₂CO₃) modified activated carbon was prepared with coal activated carbon as raw material. Under simulated sintering flue gas conditions, the effect of NO_x adsorption under the condition with SO₂, CO₂ and O₂ was investigated. Experimental results show that 0.65 mol/L K₂CO₃ modified activated carbon have the highest adsorption quantity of NO_x. The NO_x adsorption capacity can reach 15.17 mg/g and can be improved by more than 20 times. With the increase of adsorption temperature, the desorption quantity of NO_x decreases and stabilizes at about 13.70 mg/g to 13.97 mg/g. Since stable sulfate is difficult to remove after SO₂ adsorption, which decreases the regeneration effect of activated carbon. The adsorbent is suitable for moving bed adsorption treatment of sintering flue gas.
- sintering,
- flue gas,
- NO_x,
- activated carbon,
- adsorption,
- K₂CO₃

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References(48)

References

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