Ternary System of Fe-based Ionic Liquid, Ethanol and Water for Wet Flue Gas Desulfurization

被引：16
作者：
Xie Meiying [1 ]
Li Peipei [1 ]
Guo Huifeng [1 ]
Gao Lixia [1 ]
Yu Jiang [1 ]
机构：
[1] Beijing Univ Chem Technol, Res Grp Environm Catalysis & Separat Proc, Coll Chem Engn, Beijing 100029, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2012年 / 20卷 / 01期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Fe-based ionic liquid; ternary phase diagram; sulfide dioxide; wet flue gas desulfurization; CATALYZED OXIDATION; SULFUR(IV) OXIDES; SO2; ABSORPTION; MECHANISM; KINETICS;
D O I：
10.1016/S1004-9541(12)60373-5
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Fe-based ionic liquid (Fe-IL) was synthesized by mixing FeCl3.6H(2)O and 1-butyl-3-methylimidazolium chloride [Bmim]Cl in this paper. The phase diagram of a ternary Fe-IL, ethanol and water system was investigated to construct a ternary desulfurization solution for wet flue gas desulfurization. The effects of flow rate and concentration of SO2, reaction temperature, pH and Fe-IL fraction in aqueous desulfurization solution on the desulfurization efficiency were investigated. The results shows that the best composition of ternary desulfurization solution of Fe-IL, ethanol and water is 1 : 1.5 : 3 by volume ratio, and pH should be controlled at 2.0. Under such conditions, a desulfurization rate greater than 90% could be obtained. The product of sulfuric acid had inhibition effect on the wet desulfurization process. With applying this new ternary desulfurization solution, not only the catalyst Fe-IL can be recycled and reused, but also the product sulfuric acid can be separated directly from the ternary desulfurization system.
引用
收藏
页码：140 / 145
页数：6
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