SIMULTANEOUS REMOVAL OF SO2 AND NOx FROM SINTERING FLUE GAS USING AMMONIA-Fe(II)EDTA COMBINED WITH ELECTROLYTIC REGENERATION

被引:3
作者
Liang, Yan [1 ]
Yao, Xi [1 ]
Quin, Linbo [2 ]
Chen, Wangsheng [1 ]
Han, Jun [1 ,2 ]
机构
[1] Wuhan Univ Sci & Technol, Hubei Key Lab Efficient Utilizat & Agglomerat Met, Wuhan 430081, Hubei, Peoples R China
[2] Wuhan Univ Sci & Technol, Ind Safety Engn Technol Res Ctr Hubei Prov, Wuhan 430081, Hubei, Peoples R China
来源
ENVIRONMENT PROTECTION ENGINEERING | 2018年 / 44卷 / 02期
基金
美国国家科学基金会;
关键词
ELECTROCHEMICAL REDUCTION; ACTIVATED CARBON; EDTA; DESULFURIZATION; ABSORPTION; BIOFILTER;
D O I
10.5277/epe180202
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Sulfur dioxide and nitrogen oxide are health hazardous gases, which contribute to the formation of submicron acidic particulates. To reduce SO2 and NOx emission from the sintering flue gas, the combination of ammonia-Fe(II)EDTA solution scrubbing with Fe(III) electrolytic regeneration is proposed. The above method has the following advantages: direct conversion of NOx and SO2 to harmless N-2 and SO42-, recovery of the by-product (NH4)(2)SO4), simultaneous removal of NOx and SO2 emission from flue gas in the reactor. The effect of the pH, initial Fe(II)EDTA concentration, and voltage on the desulfurization and denitration efficiencies was investigated using a bench-scale reactor. The maximal desulfurization and denitration efficiencies were 98% and 52%, respectively. The optimum parameters were pH > 5.0, 2.1 V, and 0.05 mol.dm(-3) Fe(II)EDTA concentration. SO2 and NOx removal from the sintering flue gas by ammonia-Fe(II)EDTA solution scrubbing combined with electrolytic regeneration was also demonstrated in a pilot-scale reactor.
引用
收藏
页码:19 / 36
页数:18
相关论文
共 21 条
[1]   Nitric oxide removal by combined persulfate and ferrous-EDTA reaction systems [J].
Adewuyi, Yusuf G. ;
Khan, Md A. .
CHEMICAL ENGINEERING JOURNAL, 2015, 281 :575-587
[2]   Reduction of NOx in Fe-EDTA and Fe-NTA solutions by an enriched bacterial population [J].
Chandrashekhar, B. ;
Pai, Padmaraj ;
Morone, Amruta ;
Sahu, Nidhi ;
Pandey, R. A. .
BIORESOURCE TECHNOLOGY, 2013, 130 :644-651
[3]   Fe(II)EDTA-NO reduction by a newly isolated thermophilic Anoxybacillus sp HA from a rotating drum biofilter for NOx removal [J].
Chen, Jun ;
Li, Yan ;
Hao, Hong-hong ;
Zheng, Ji ;
Chen, Jian-meng .
JOURNAL OF MICROBIOLOGICAL METHODS, 2015, 109 :129-133
[4]   Selective autocatalytic reduction of NO from sintering flue gas by the hot sintered ore in the presence of NH3 [J].
Chen, Wangsheng ;
Luo, Jing ;
Qin, Linbo ;
Han, Jun .
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2015, 164 :146-150
[5]   Elimination Behaviors of NOx in the Sintering Process with Flue Gas Recirculation [J].
Fan, Xiaohui ;
Yu, Zhiyuan ;
Gan, Min ;
Chen, Xuling ;
Chen, Qiang ;
Liu, Shu ;
Huang, Yunsong .
ISIJ INTERNATIONAL, 2015, 55 (10) :2074-2081
[6]   Kinetics of NOx Absorption into (NH4)2SO3 Solution in an Ammonia-Based Wet Flue Gas Desulfurization Process [J].
Gao, Xiang ;
Du, Zhen ;
Ding, Hong-lei ;
Wu, Zu-liang ;
Lu, Hao ;
Luo, Zhong-yang ;
Cen, Ke-fa .
ENERGY & FUELS, 2010, 24 (11) :5876-5882
[7]   Gas-liquid absorption reaction between (NH4)2SO3 solution and SO2 for ammonia-based wet flue gas desulfurization [J].
Gao, Xiang ;
Ding, Honglei ;
Du, Zhen ;
Wu, Zuliang ;
Fang, Mengxiang ;
Luo, Zhongyang ;
Cen, Kefa .
APPLIED ENERGY, 2010, 87 (08) :2647-2651
[8]   Simultaneous removal of NOx and SO2 from flue gas using combined Na2SO3 assisted electrochemical reduction and direct electrochemical reduction [J].
Guo, Qingbin ;
He, Yi ;
Sun, Tonghua ;
Wang, Yalin ;
Jia, Jinping .
JOURNAL OF HAZARDOUS MATERIALS, 2014, 276 :371-376
[9]   Spray Absorption and Electrochemical Reduction of Nitrogen Oxides from Flue Gas [J].
Guo, Qingbin ;
Sun, Tonghua ;
Wang, Yalin ;
He, Yi ;
Jia, Jinping .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2013, 47 (16) :9514-9522
[10]   Investigation of SO2 and NO adsorption species on activated carbon and the mechanism of NO promotion effect on SO2 [J].
Guo, Yangyang ;
Li, Yuran ;
Zhu, Tingyu ;
Ye, Meng .
FUEL, 2015, 143 :536-542