引用本文:钟荣强,李金环,白文轩,张丽,余江. Cu（Ⅱ）强化铁基离子液体脱硫富液氧化再生性能研究[J]. 石油与天然气化工, 2025, 54(1): 1-8.
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Cu（Ⅱ）强化铁基离子液体脱硫富液氧化再生性能研究
钟荣强，李金环，白文轩，张丽，余江
1.中国石化西北油田分公司石油工程技术研究院;2.中石化石油工程设计有限公司;3.北京化工大学化工学院能源环境催化北京市重点实验室
摘要:
目的 解决铁基离子液体[Fe（Ⅲ）-IL]湿法氧化脱除硫化氢（H2S）技术再生效率低的问题，利用二价铜离子Cu（Ⅱ）对铁基离子液体脱硫富液的再生性能进行强化。方法 为避免铁基离子液体脱硫富液中未反应的溶解态H2S分子对再生过程的干扰，制备了模拟铁基离子液体脱硫富液[Fe（Ⅱ/Ⅲ）-IL]，并通过FT-IR、Raman和CV等表征，验证模拟体系的可靠性。随后，将二价铜基离子液体[Cu（Ⅱ）-IL]引入至铁基离子液体脱硫富液中，并添加了聚乙二醇二甲醚（NHD）以降低脱硫富液的黏度，构建了Cu（Ⅱ）-IL+Fe（Ⅱ/Ⅲ）-IL/NHD复合体系。结果 当复合体系中Cu（Ⅱ）质量浓度为4.36 g/L时，在120 min内可实现脱硫富液的全部再生。结论 通过考查溶剂配比、亚铁离子质量浓度、铜离子质量浓度、水质量分数、温度等因素对脱硫富液再生性能的影响，优化了金属基离子液体脱硫体系，使其为适应石油与天然气等化石能源的开采和工业应用过程的可持续发展需求提供了新的选择。
关键词:  铁基离子液体  硫化氢  脱硫富液再生  铜基离子液体  氧化脱硫
DOI：10.3969/j.issn.1007-3426.2025.01.001
分类号:
基金项目:国家科技重大专项“净化装置尾气SO2减排工艺技术”（2016ZX05017-004）；国家自然科学基金“非水介质吸收氧化?电解硫化氢双反应过程耦合及调控”（21076019）；国家自然科学基金“高温湿法氧化煤气脱硫新工艺及其应用基础研究”（90610007）；国家科学技术部计划（863计划）“高温湿法氧化煤气脱硫技术”（2007AA06Z115）；中石化企业内部课题“离子液体天然气脱硫剂研发”（SG20-64 K）
Study on the oxidative regeneration performance of Cu(Ⅱ) enhancing iron-based ionic liquid desulfurization rich solution
Rongqiang ZHONG1,2, Jinhuan LI2, Wenxuan BAI3, Li ZHANG3, Jiang YU3
1.Petroleum Engineering Technology Research Institute of SINOPEC Northwest Oilfield Branch, Urumqi, Xinjiang, China;2.SINOPEC Petroleum Engineering Corporation, Dongying, Shandong, China;3.Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
Abstract:
Objective The aim is to solve the problem of low regeneration efficiency in the wet oxidation removal of hydrogen sulfide(H2S) using iron-based ionic liquid [Fe(Ⅲ)-IL], Cu(Ⅱ) was utilized to enhance the regeneration performance of iron-based ionic liquid desulfurization rich solution. Method In order to avoid the interference of unreacted dissolved H2S molecules in the desulfurization rich solution on the regeneration process, a simulated iron-based ionic liquid desulfurization rich solution [Fe(Ⅱ/Ⅲ)-IL] was prepared, and the reliability of the simulated system was verified by characterization such as FT-IR, Raman and CV. Subsequently, Cu(Ⅱ)-IL was introduced into desulfurization rich solution, and poly(ethylene glycol) dimethyl ether (NHD) was added to reduce the viscosity of the desulfurization rich solution. And the composite system of Cu(Ⅱ)-IL+Fe(Ⅱ/Ⅲ)-IL/NHD was constructed. Result When the mass concentration of Cu(Ⅱ) in the composite system was 4.36 g/L, the desulfurization rich solution could be completely regenerated within 120 min. Conclusion By investigating the effects of solvent ratio, Fe(Ⅱ) and Cu(Ⅱ) mass concentrations, water mass fraction, and temperature on the regeneration performance of the desulfurization rich solution, the metal-based ionic liquid desulfurization system has been optimized, which can provide a new choice for adapting to the sustainable development needs of fossil energy exploitation and industrial application processes, such as petroleum and natural gas.
Key words:  iron-based ionic liquid  hydrogen sulfide  desulfurization rich solution regeneration  copper-based ionic liquid  oxidative desulfurization