Simultaneous removal of SO2 and NOx from flue gas using (NH4)(2)S2O3/steel slag slurry combined with ozone oxidation
文献类型：期刊论文
| 作者 | Meng, Ziheng1,2; Wang, Chenye1; Wang, Xingrui1; Chen, Yan1; Wu, Wenfen1,2; Li, Huiquan1,2 |
| 刊名 | FUEL
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 255页码:8 |
| 关键词 | Simultaneous removal SO2 NOx (NH4)(2)S2O3 Steel slag Reaction mechanism |
| ISSN号 | 0016-2361 |
| DOI | 10.1016/j.fuel.2019.115760 |
| 英文摘要 | The use of thiosulfate salt (S2O32-), a low-cost reductant, as an absorbent for NO2 removal has been rarely reported. In this study, we propose a method that combines ozone oxidation and (NH4)(2)S2O3/steel slag slurry spraying to simultaneously remove sulfur dioxide (SO2) and nitrogen oxides (NOx) from flue gas. We investigated the effects of operation conditions on the simultaneous removal efficiencies of SO2 and NOx. Results showed that SO2 removal efficiency was affected by pH, whereas NOx removal efficiency was mostly influenced by (NH4)(2)S2O3 concentration, reaction temperature, and pH level. Under optimal operation conditions, removal efficiencies of almost 100% for SO2 and above 78.0% for NOx were achieved. NH4+ in the steel slag slurry could tolerate high NO2- concentrations (up to 3.00 mol/L), and the co-existence of NH4+ and S2O32- had a significant synergistic effect on NOx removal. Together with S2O32-, Mg2+ that leached from the steel slag also had a synergistic effect on NO2 removal. We established the reaction mechanisms for NOx removal using (NH4)(2)S2O3/steel slag slurry. In this process, S2O32- acted as a reducing agent and an oxidation inhibitor of SO32-, thereby enhancing NO2 removal. Moreover, NH4+ inhibited the denitration product (NO2-) from decomposing into NO and NO2, thereby accelerating NOx removal. |
| WOS关键词 | SIMULTANEOUS ABSORPTION ; NITROGEN-OXIDES ; NITRIC-OXIDE ; SULFUR-DIOXIDE ; AQUEOUS-SOLUTIONS ; ELEMENTAL SULFUR ; SULFITE ; AMMONIUM ; DESULFURIZATION ; PERSULFATE |
| 资助项目 | Young Scientists Fund of the National Natural Science Foundation of China[21706264] ; Science and Technology Service Network Initiative Project of the Chinese Academy of Sciences[KFJ-SW-STS-178] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000479141700115 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | Young Scientists Fund of the National Natural Science Foundation of China ; Science and Technology Service Network Initiative Project of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/30619]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Huiquan |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Ziheng,Wang, Chenye,Wang, Xingrui,et al. Simultaneous removal of SO2 and NOx from flue gas using (NH4)(2)S2O3/steel slag slurry combined with ozone oxidation[J]. FUEL,2019,255:8. |
| APA | Meng, Ziheng,Wang, Chenye,Wang, Xingrui,Chen, Yan,Wu, Wenfen,&Li, Huiquan.(2019).Simultaneous removal of SO2 and NOx from flue gas using (NH4)(2)S2O3/steel slag slurry combined with ozone oxidation.FUEL,255,8. |
| MLA | Meng, Ziheng,et al."Simultaneous removal of SO2 and NOx from flue gas using (NH4)(2)S2O3/steel slag slurry combined with ozone oxidation".FUEL 255(2019):8. |
入库方式： OAI收割
来源：过程工程研究所
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