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

被引：15

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

页码：140 / 145

页数：6

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