HYDROGEN SULFIDE REMOVAL BY Fe-BASED DEEP EUTECTIC SOLVENTS

Abstract

Abstract: Wet oxidation method can remove hydrogen sulfide and recover sulfur by-product and the desulfurizer can be recycled. The ferric salt in deep eutectic solvent was used as oxidant for removing hydrogen sulfide. The effect of different reaction conditions on the desulfurization is investigated. The results show that the suitable concentration of Fe(NO3)3?9H2O is the necessary requirement for high efficiency desulfurization, and the ionic liquid system is the main factor influencing the desulphurization rate. Under the conditions of certain eutectic solvent, the desulfurization efficiency is mainly affected by inlet flow rate of hydrogen sulfide gas. The product is of monoclinic sulfur.

References

[1]董群，武显春，单希林，等.化学吸收—催化氧化法脱除酸性气中硫化氢的试验研究[J].石油炼制与化工，2000,31（9）：17-19
[2]李新学，魏雄辉．铁离子湿式氧化法脱除硫化氢的技术进展[J]．气体净化，2004，4（3）：5-7
[3]Ghobadi A F, Taghikhani V, Elliott J R. Investigation on the solubility of SO2 and CO2 in imidazolium-based ionic liquids using NPT Monte Carlo simulation[J]. The Journal of Physical Chemistry B, 2011, 115(46): 13599-13607
[4]Sakhaeinia H．，Jalili A.H．，TaghikhaniV．，Safekordi A.A., Solubility of H2S in ionic liquids 1-Ethyl-3-methylimidazolium Hexafluorophosphate ([emim][PF(6)]) and 1-Ethyl-3-methylimidazolium Bis(trifluoromethyl)sulfonylimide ([gemim][Tf(2)N])[J].
Chem.Eng.Data,2010，55(12),5839 -5845
[5]Abbott A P, Capper G, Davies D L, et al. Novel solvent properties of choline chloride/urea mixtures[J]. Chemical Communications, 2003 (1): 70-71
[6]韦露，樊友军．低共熔溶剂及其应用研究进展[J]．化学通报，2011，77（4）：333-334
[7]Phadtare S B, Shankarling G S. Halogenation reactions in biodegradable solvent: Efficient bromination of substituted 1-aminoanthra-9, 10-quinone in deep eutectic solvent (choline chloride: urea)[J]. Green Chemistry, 2010, 12(3): 458-462
[8]Chen Z, Zhu W, Zheng Z, et al. One-pot α-nucleophilic fluorination of acetophenones in a deep eutectic solvent[J]. Journal of Fluorine Chemistry, 2010, 131(3): 340-344
[9]Chen S, Zhang J, Wu T, et al. Zinc (II)-boron (III)-imidazolate framework (ZBIF) with unusual pentagonal channels prepared from deep eutectic solvent[J]. Dalton Transactions, 2010, 39(3): 697-699
[10]Hu S Q, Zhang Z F, Zhou Y X et al. Direct conversion of inulin to 5-hydroxymethylfurfural in biorenewable ionic liquids[J]. Green Chem., 2009, 11(6): 873 – 877
[11]Tokuda H., Hayamizu K., Ishii K., Susan M. A. B. H. Physicochemical properties and structures of room temperature ionic liquids. 1. variation of anionic species[J]. Phys. Chem. B, 2004, 108(42), 16593—16600
[12]Andrew P A, Glen C, David L D, et a1. Novel solvent properties of choline chloride／urea mixtures[J]. Chem Commun, 2003: 70-71
[13]Abbott A P, Boothby D, Capper G, et al. Deep eutectic solvents formed between choline chloride and carboxylic acids: versatile alternatives to ionic liquids[J]. Journal of the American Chemical Society, 2004, 126(29): 9142-9147
[14]Abbott A P, Harris R C, Ryder K S. Application of hole theory to define ionic liquids by their transport properties[J]. The Journal of Physical Chemistry B, 2007, 111(18): 4910-4913
[15]何义．铁基离子液体湿法氧化[D]．北京：北京化工大学．2010：26-29
[16]王建宏，朱玲．[bmim]FeCl4离子液体催化氧化硫化氢的研究[J] ．天然气化工，2012，37（6）：30-32
[17]王建宏，陈家庆，阎红昭．[bmim]FeCl4离子液体的物理性质[J]．化学研究，2012，23(1)：9-13
[18]Ma X, Wang X, Song C. “Molecular basket” sorbents for separation of CO2 and H2S from various gas streams[J]. Journal of the American Chemical Society, 2009, 131(16): 5777-5783