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SO2 Removal Performance of Porous High-Content Iron Fly Ash Modified by NaClO
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Yongjia LI, Xianrong ZHENG, Guangyuan TIAN, Xiaofeng HAO, Yuying WANG
Journal of the Chinese Ceramic Society | 2023, 51(7) : 1792 - 1799
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Journal of the Chinese Ceramic Society | 2023, 51(7): 1792-1799
• Research Articles •
SO2 Removal Performance of Porous High-Content Iron Fly Ash Modified by NaClO
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Yongjia LI, Xianrong ZHENG, Guangyuan TIAN, Xiaofeng HAO, Yuying WANG
Affiliations
  • School of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China

    • LI Yongjia (1997-), male, Master candidate. E-mail:

About Author:

LI Yongjia (1997-), male, Master candidate. E-mail:

Published: 2023-05-29 doi: 10.14062/j.issn.0454-5648.20221040
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It is of great significance for the improvement and utilization of fly ash to reduce the accumulation pollution of coal based solid waste. In this work, a porous high-content iron fly ash sorbent named KIFA was obtained via CaO hydration, addition of pore-making agent and binder, and oxidation modification by NaClO. This sorbent KIFA with an optimized pore structure can promote the formation of K2FeO4. The fixed-bed evaluation results show that the KIFA has the maximum SO2 removal ability at 700 ℃, 5% O2 and 500 mg/m3 SO2, and the breakthrough time and sulfur capacity of the removal efficiency of > 93% are 111.8 min and 93.58 mg/g, respectively, having the ultra-low emission standard of 35 mg/m3. According to the characterization results of fresh and used KIFA, K2FeO4 is a main active component in removing SO2 by KIFA, and Fe(VI) provides the oxidation site, which oxidizes SO2 to SO42-. NO can promote the forward desulfurization reaction. NO, SO2 and CaO can form an intermediate product of NO3SO3Ca, which can be converted into SO42-, thus improving the removal efficiency of SO2.

solid waste utilization  /  high-content iron fly ash  /  sodium hypochlorite  /  potassium ferrate  /  desulfurization performance
李泳佳, 郑仙荣, 田广元, 郝晓峰, 王玉莹. NaClO改性多孔高铁粉煤灰脱除SO2性能. 硅酸盐学报, 2023 , 51 (7) : 1792 -1799 . DOI: 10.14062/j.issn.0454-5648.20221040
Yongjia LI, Xianrong ZHENG, Guangyuan TIAN, Xiaofeng HAO, Yuying WANG. SO2 Removal Performance of Porous High-Content Iron Fly Ash Modified by NaClO[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (7) : 1792 -1799 . DOI: 10.14062/j.issn.0454-5648.20221040
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Year 2023 volume 51 Issue 7
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Article Info
doi: 10.14062/j.issn.0454-5648.20221040
  • Receive Date：2022-12-01
  • Online Date：2026-10-19
  • Published：2023-05-29
Article Data
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History
  • Received：2022-12-01
  • Revised：2022-12-25
Funding
Affiliations
    School of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding:

ZHENG Xianrong (1976-), female, Ph.D., Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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