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

Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (1): 140-145.

Previous Articles Next Articles

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

XIE Meiying, LI Peipei, GUO Huifeng, GAO Lixia, YU Jiang

Research Group of Environmental Catalysis and Separation Process, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2011-08-14 Revised:2011-11-16 Online:2012-05-03 Published:2012-02-28
Supported by:
Supported by the National Natural Science Foundation of China (21076019,90610007);the National High Technology Research and Development Program of China (2007AA06Z115);the Ph.D. Programs Foundation of Ministry of Education of China (20090010110003);the Fundamental Research Funds for the Central Universities (ZD1001)

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

解美莹, 李沛沛, 郭惠锋, 高丽霞, 余江

Research Group of Environmental Catalysis and Separation Process, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

通讯作者: YU Jiang,E-mail:yujiang@mail.buct.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21076019,90610007);the National High Technology Research and Development Program of China (2007AA06Z115);the Ph.D. Programs Foundation of Ministry of Education of China (20090010110003);the Fundamental Research Funds for the Central Universities (ZD1001)

Abstract

Abstract: Fe-based ionic liquid(Fe-IL) was synthesized by mixing FeCl₃·6H₂O 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.

Key words: Fe-based ionic liquid, ternary phase diagram, sulfide dioxide, wet flue gas desulfurization

摘要： Fe-based ionic liquid(Fe-IL) was synthesized by mixing FeCl₃·6H₂O 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.

关键词: Fe-based ionic liquid, ternary phase diagram, sulfide dioxide, wet flue gas desulfurization

CLC Number:

X701.3

XIE Meiying, LI Peipei, GUO Huifeng, GAO Lixia, YU Jiang. Ternary System of Fe-based Ionic Liquid, Ethanol and Water for Wet Flue Gas Desulfurization[J]. Chin.J.Chem.Eng., 2012, 20(1): 140-145.

解美莹, 李沛沛, 郭惠锋, 高丽霞, 余江. Ternary System of Fe-based Ionic Liquid, Ethanol and Water for Wet Flue Gas Desulfurization[J]. Chinese Journal of Chemical Engineering, 2012, 20(1): 140-145.

References

1 Jiang,X.C.,Nie,Y.,Li,C.X.,Wang,Z.H.,"Imidazolium-based alkylphosphate ionic liquids—a potential solvent for extractive desulfurization of fuel",Fuel,87,79-84(2008).
2 Jiang,J.H.,Li,Y.H.,Cai,W.M.,"Experimental and mechanism research of SO₂ removal by cast iron scraps in a magnetically fixed bed",J.Hazard.Mater.,153,508-513(2008).
3 Slimane,R.B.,Abbasian,J.,"Copper-based sorbents for coal gas desulfurization at moderate temperatures",Ind.Eng.Chem.Res.,39,1338-1344(1997).
4 Fan,M.H.,Zhuang,Y.H.,"Research on a new desulphurization process with FeSO4 solution as absorbent",Environ.Sci.,19(1),5-8 (1995).(in Chinese)
5 Kraft,J.,van Eldik R.,"Kinetics and mechanism of the iron(Ⅲ) -catalyzed autoxidation of sulfur(Ⅳ)oxides in aqueous solution.1. Formation of transient iron(Ⅲ)-sulfur(Pc)complexes",Inorg. Chem.,28,2297-2305(1989).
6 Conklin,M.H.,Hoffmann,M.R.,"Metal ion-sulfur(IV)chemistry.3. Thermodynamics and kinetics of transient iron(HI)-sulfur(IV)complexes",Environ.Sci.Technol.,22(8),899-907(1988).
7 Olywen,G.H.,Olywen,S.,Coordination and Catalysis,Verlag Chemie,Weinheim-New York,88-95(1977).
8 Brandt,C.,van Edik.R.,"Transition metal-catalyzed oxidation of sulfur(IV)oxides.atmospheric-relevant processes and mechanisms",Chem.Rev.,95(1),119-190(1995).
9 Freiberg,J.,"The mechanism of iron catalyzed oxidation of SO₂ in oxygenated solutions",Atmos.Environ.,9(6-7),661-672(1975).
10 Butler,A.D.,Fan,M.H.,Brown,R.C.,Cooper,A.T.,van Leeuwen,J.H.,Sung,S.,"Absorption of dilute SO₂ gas stream with conversion to polymeric ferric sulfate for use in water treatment",Chem.Eng.J.,98,265-273(2004).
11 Wu,W.Z.,Han,B.X.,Gao,H.X.,Liu,Z.M.,Jiang,T.,Huang,J.,"Desulphurization of flue gas:SO₂ absorption by an ionic liquid",Angew.Chem.Int.Ed.,43,2415-2417(2004).
12 Anderson,J.L.,Dixon,J.K.,Maginn,E.J.,Brennecke,J.F.,"Measurement of SO₂ solubility in ionic liquids",J.Phys.Chem.B,110 (31),15095-15062(2006).
13 Rogers,R.D.,Seddon,K.R.,"Ionic liquids-solvents of the future?" Science,302,792-793(2003).
14 Jiang,Y.Q.,Zhu,W.S.,Li,H.M.,Yin,S,Liu,H,Xie,Q.J.,"Oxidative Desulfurization of Fuels Catalyzed by Fenton-Like Ionic Liquids at Room Temperature",CHEMSUSCHEM,4(3),399-403 (2011).
15 He,Y.,Yu,J.,Chen,L.B.,"Wet oxidation desulfurization of hydrogen sulfide with application of Fe-based ionic liquid",CIESC J.,61 (4),963-968(2010).(in Chinese)
16 Yao,R.S.,Li,P.P.,Sun L.L.,He,Y.,Chen,L.B.,Yu,Y.,Mu,R.,Yu,J.,"Physicochemical properties of iron-based chloride imidazole ionic liquid and wet desulfurization mechanism of hydrogen sulfide",J.China Coal Soc.,36(1),135-139(2011).(in Chinese)

[1]	Jiangyuan Qu, Nana Qi, Kai Zhang, Lifeng Li, Pengcheng Wang. Wet flue gas desulfurization performance of 330 MW coal-fired power unit based on computational fluid dynamics region identification of flow pattern and transfer process [J]. Chinese Journal of Chemical Engineering, 2021, 29(1): 13-26.
[2]	M. Ajdar, A. Azdarpour, A. Mansourizadeh, B. Honarvar. Improvement of porous polyvinylidene fluoride-co-hexafluropropylene hollow fiber membranes for sweeping gas membrane distillation of ethylene glycol solution [J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 3002-3010.
[3]	Meitang Jin, Zhao Xu, Ying Bao, Long Li, Liping Wang, Haijiao Lu, Chuang Xie, Hongxun Hao. Ternary phase diagrams and solvate transformation thermodynamics of omeprazole sodium in different solvent mixtures [J]. Chin.J.Chem.Eng., 2019, 27(2): 362-368.
[4]	WU Jialong, PAN Qinmin, G. L. Rempel. Prediction of Phase Behavior for Styrene/CO2/Polystyrene Mixtures [J]. , 2002, 10(6): 706-710.

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

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

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 4

Recommended Articles

Metrics

Comments