TY - JOUR
ID - 10.1016/j.jes.2020.11.021
TI - O3 oxidation combined with semi-dry method for simultaneous desulfurization and denitrification of sintering/pelletizing flue gas
AU - Fagao Liu
AU - Maoyu Cai
AU - Xiaolong Liu
AU - Tingyu Zhu
AU - Yang Zou
VL - 33
IS -
PB -
SP - 253
EP - 263
PY -
JF - Journal of Environmental Sciences
JA - J. Environ. Sci.
UR - http://www.jesc.ac.cn/jesc_en/ch/reader/view_abstract.aspx?file_no=S1001074220304782&flag=1
KW - Corresponding author.;3;Oxidation;Semi-dry method;Sintering/pelletizing flue gas;Desulfurization and denitrification
AB - With the vigorous development of China's iron and steel industry and the introduction of ultra-low emission policies, the emission of pollutants such as SO2 and NOx has received unprecedented attention. Considering the increase of the proportion of semi-dry desulfurization technology in the desulfurization process, several semi-dry desulphurization technologies such as flue gas circulating fluidized bed (CFB), dense flow absorber (DFA) and spray drying absorption (SDA) are briefly summarized. Moreover, a method for simultaneous treatment of SO2 and NOx in sintering/pelletizing flue gas by O3 oxidation combined with semi-dry method is introduced. Meantime, the effects of key parameters such as O3/NO molar ratio, CaSO3, SO2, reaction temperature, Ca/(S+2N) molar ratio, droplet size and approach to adiabatic saturation temperature (AAST) on denitrification and desulfurization are analyzed. Furthermore, the reaction mechanism of denitrification and desulfurization is further elucidated. Finally, the advantages and development prospects of the new technology are proposed.
ER -