离子液体脱除低浓度氯乙烯的实验与流程模拟

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Abstract The feasibility of deep vinyl chloride removal from tail gas was investigated by proposing the efficient absorption of vinyl chloride using ionic liquids (ILs). The saturation absorption of three types of ILs (i.e., [BMPYR][Tf₂N], [BMIM][Tf₂N] and [EMIM][Tf₂N]) on simulated vinyl chloride gas with a low concentration (5%) was measured using the equal volume saturation method, followed by an absorption experiment in a packed tower with simulated vinyl chloride gas at an extremely low concentration (0.01%). Subsequently, the concept design and process optimization of vinyl chloride absorption by ILs was performed using Aspen Plus process simulation software. The results indicate that the Henry constant of vinyl chloride is significantly lower than that of nitrogen, and the influence of temperature was relatively small. The experimental results of the absorption tower demonstrate that all the three ILs exhibited excellent removal performance (absorption ratio >94%) of vinyl chloride simulation gas with extremely low concentration (0.01%) under conditions of 25℃, atmospheric pressure, and inlet flow rate of 100mL/min. Among them, [BMPYR][Tf₂N] exhibited the highest absorption ratio at 97%. Process optimization results for [BMPYR][Tf₂N] absorbing vinyl chloride tail gas (1%, inlet flow rate of 100kg/h) reveal that under optimal operating conditions: number of theoretical plates for absorption tower of 6, a relative operating pressure of 0.25MPa, an IL absorption mass flow rate of 2600kg/h, as well as a temperature of 160℃ and a pressure of 0.001bar for the secondary flash tank, the emitted concentration of vinyl chloride can meet the specified standard (0.0015%). The findings demonstrate that the utilization of ILs for efficient removal of vinyl chloride from exhaust gas and their extensive application can significantly contribute to mitigating the pollution caused by toxic and hazardous substances.

Key words： ionic liquids vinyl chloride absorption process simulation

Received: 03 March 2024

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X701.7

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	XIAN Jing
	WANG Shu-ying
	MU Ming-li
	DAI Cheng-na

Cite this article:

XIAN Jing,WANG Shu-ying,MU Ming-li等. Experiment and process simulation for the removal of low concentration vinyl chloride by ionic liquids[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(10): 5378-5387.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I10/5378

[1] 赵凤辉.电石法聚氯乙烯生产汞污染综合处理技术[J]. 化工管理, 2023,(32):58-60. Zhao F H. Comprehensive treatment technology for mercury pollution in PVC production using calcium carbide method [J]. Chemical Management, 2023,(32):58-60.
[2] Liu Y C, Wang J. Numerical Simulation Analysis of Fire Hazard from Leakage and Diffusion of Vinyl Chloride in Different Atmospheric Environments [J]. Fire-Switzerland, 2022,5(2),36.https://doi.org/10.3390/fire5020036.
[3] Dana L I, Burdick J N, Jenkins A C. Some physical poperties of vinyl chloride [J]. Journal of the American Chemical Society, 1927,49(11): 2801-2806.
[4] Zelko I N, Taylor B S, Das T P, et al. Effect of vinyl chloride exposure on cardiometabolic toxicity [J]. Environmental Toxicology, 2022, 37(2):245-255.
[5] Oushani N H, Valipour M, Maghami P. Protective role of selenium on structural change of human hemoglobin in the presence of vinyl chloride [J]. Toxicological Research, 2022,38(4):557-66.
[6] GB 15581-2016烧碱,聚氯乙烯工业污染物排放标准[S]. GB 15581-2016 Emission standards for industrial pollutants from caustic soda and polyvinyl chloride [S].
[7] 吕冰,代永福,李荟冰.采用变压吸附技术回收氯乙烯精馏尾气[J]. 聚氯乙烯, 2020,48(12):40-42. Lu B, Dai Y F, Li H B. Recovery of vinyl chloride distillation tail gas using pressure swing adsorption technology [J]. Polyvinyl Chloride, 2020,48(12):40-42.
[8] 赵涛,黄志亮,李祯,等.采用变压吸附法回收氯乙烯精馏尾气[J]. 聚氯乙烯, 2017,45(9):44-46. Zhao T, Huang Z L, Li Z, et al. Recovery of vinyl chloride distillation tail gas using pressure swing adsorption method [J]. Polyvinyl Chloride, 2017,45(9):44-46.
[9] 王建军,徐柯,张岩.氯乙烯精馏尾气深度处理的研究与应用[J]. 聚氯乙烯, 2022,50(9):40-43. Wang J J, Xu K, Zhang Y. Research and application of advanced treatment of tail gas from vinyl chloride distillation [J]. Polyvinyl Chloride, 2022,50(9):40-43.
[10] 王欢,张有麟,吴永德,等.PVC生产中氯乙烯单体回收工艺改进[J]. 聚氯乙烯, 2021,49(1):43. Wang H, Zhang Y L, Wu Y D, et al. Improvement of vinyl chloride monomer recovery process in PVC production [J]. Polyvinyl Chloride, 2021,49(1):43.
[11] 李学文,张有麟,朱睿杰,等.聚氯乙烯回收冷凝系统性能优化提升[J]. 聚氯乙烯, 2022,50(7):43. Li X W, Zhang Y L, Zhu R J, et al. Performance optimization and improvement of PVC recycling and condensation systems [J]. Polyvinyl Chloride, 2022,50(7):43.
[12] 卫红斌,和虎.氯乙烯尾气回收工艺研究[J]. 中国氯碱, 2022,(11): 42-46. Wei H B, He H. Research on the recovery process of vinyl chloride tail gas [J]. China Chloroalkali, 2022,(11):42-46.
[13] Zhu Z Y, Yu M Q, Wu Z, et al. Evaluation of the absorption performance of new compound absorbents for toluene under extremely high load [J]. Environmental Science and Pollution Research, 2021, 28(37):52106-52123.
[14] Novitsky E G, Grushevenko E A, Borisov I L, et al. Monoethanolamine (MEA) degradation: Influence on the electrodialysis treatment of MEA- absorbent [J]. Membranes, 2023, 13(5):491.https://doi.org/10.3390/membranes13050491.
[15] 马心阳,蒋心远,贺金岭,等.离子液体强化剩余污泥厌氧发酵产酸效能研究[J/OL]. 中国环境科学:1-6[2023-12-28]. https://doi.org/10.19674/j.cnki.issn1000-6923.20231211.025. Ma X Y, Jiang X Y, He J L, et al. Study on the efficiency of ionic liquid enhanced anaerobic fermentation of excess sludge for acid production [J/OL]. Chinese Environmental Science:1-6[2023-12-28]. https://doi.org/10.19674/j.cnki.issn1000-6923.20231211.025.
[16] 吴进,张承龙,王瑞雪,等.离子液体吸收废印刷线路板热拆解过程中挥发性有机物——基于COSMO-RS模型[J]. 中国环境科学, 2020,40(5):1946-1952. Wu J, Zhang C L, Wang R X, et al. Ionic liquid absorption of volatile organic compounds in the thermal decomposition process of waste printed circuit boards - based on the COSMO-RS model [J]. Chinese Environmental Science, 2020,40(5):1946-1952.
[17] 赵美,陈广世,魏丽,等.咪唑类离子液体在蒙脱石上的吸附行为与机理[J]. 中国环境科学, 2017,37(4):1450-1457. Zhao M, Chen G S, Wei L, et al. Adsorption behavior and mechanism of imidazole ionic liquids on montmorillonite [J]. Chinese Environmental Science, 2017,37(4):1450-1457.
[18] Rodriguez Castillo A-S, Biard P-F, Guihéneuf S, et al. Assessment of VOC absorption in hydrophobic ionic liquids: Measurement of partition and diffusion coefficients and simulation of a packed column [J]. Chemical Engineering Journal, 2019,360:1416-1426.
[19] Salar-garcía M J, Ortiz-martínez V M, Hernández-Fernández F J, et al. Ionic liquid technology to recover volatile organic compounds (VOCs) [J]. Journal of Hazardous Materials, 2017,321:484-499.
[20] Yu G Q, Sui X H, Lei Z G, et al. Air-drying with ionic liquids [J]. Aiche Journal, 2019,65(2):479-482.
[21] Cheng X P, Yang G, Mu T C, et al. Absorption of vinyl chloride by room temperature ionic liquids [J]. Clean - Soil, Air, Water, 2009, 37(3):245-248.
[22] Cheng X P, Mu T C, Wang X L, et al. Low pressure solubilities of vinyl chloride in ionic liquids [J]. Journal of Chemical and Engineering Data, 2008,53(12):2807-2809.
[23] Sun H T, Cao B, Tian Q, et al. A DFT study on the absorption mechanism of vinyl chloride by ionic liquids [J]. Journal of Molecular Liquids, 2016,215:496-502.
[24] 金春晓.氯乙烯气体在离子液体中溶解规律的研究[D]. 杭州:浙江工业大学, 2020. Jin C X. Research on the dissolution law of vinyl chloride gas in ionic liquids [D]. Hangzhou: Zhejiang University of Technology, 2020.
[25] Nath D, Henni A. Solubility of carbon dioxide (CO₂) in four bis (trifluoromethyl-sulfonyl) imide ([Tf₂N]) based ionic liquids [J]. Fluid Phase Equilibria, 2020,524:112757. https://doi.org/10.1016/j.fluid.2020.112757.
[26] Zhang X, Li Y, Cao H, et al. Effect of the ionic liquids with anion [Tf₂N]^- on the whole cell catalytic properties of Penicillium Purpurogenum Li-3Strain [J]. Chemical Journal of Chinese Universities, 2016,37(10):1870-1875.
[27] Navarro P, Larriba M, Beigbeder J B, et al. Thermal stability and specific heats of {[bpy][BF₄] +[bpy][Tf₂N]} and {[bpy][BF₄] +[4bmpy][Tf₂N]} mixed ionic liquid solvents [J]. Journal of Thermal Analysis and Calorimetry, 2015,119(2):1235-1243.
[28] Navarro P, Larriba M, García J, et al. Thermal stability, specific heats, and surface tensions of ([emim][DCA] +[4empy][Tf₂N]) ionic liquid mixtures [J]. Journal of Chemical Thermodynamics, 2014,76:152-160.
[29] 刘向阳.气体在离子液体中溶解度的实验测量与理论计算[D]. 西安:西安交通大学, 2017. Liu X Y. Experimental measurement and theoretical calculation of gas solubility in ionic liquids [D]. Xi'an: Xi'an Jiaotong University, 2017.
[30] 沈鹏.离子液体吸收气体的预测型热力学模型及实验研究[D]. 北京:北京化工大学, 2016. Shen P. Predictive thermodynamic models and experimental studies on the absorption of gases by ionic liquids [D]. Beijing: Beijing University of Chemical Technology, 2016.
[31] 李超越.国产航空燃油中溶解气体逸出规律理论与实验研究[D]. 南京:南京航空航天大学, 2020. Li C Y. Theoretical and experimental research on the escape law of dissolved gases in domestic aviation fuel [D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2020.
[32] Jacquemin J, Gomes M F C, Husson P, et al. Solubility of carbon dioxide, ethane, methane, oxygen, nitrogen, hydrogen, argon, and carbon monoxide in 1-butyl-3-methylimidazolium tetrafluoroborate between temperatures 283K and 343K and at pressures close to atmospheric [J]. Journal of Chemical Thermodynamics, 2006,38(4): 490-502.
[33] 刘思琦,白里航,刘向阳,等.O₂在庚酸乙酯中的溶解度[J]. 热科学与技术, 2018,17(1):68-72. Liu S Q, Bai L H, Liu XY, et al. The solubility of O₂ in ethyl heptanate [J]. Thermal Science and Technology, 2018,17(1):68-72.
[34] Carrera G, Da Ponte M N, Rebelo L P N. Chemoinformatic approaches to predict the viscosities of ionic liquids and ionic liquid-containing systems [J]. Chemphyschem, 2019,20(21):2767-2773.
[35] Jiang S Q, Hu Y F, Wang Y C, et al. Viscosity of typical room- temperature ionic liquids: A critical review [J]. Journal of Physical and Chemical Reference Data, 2019,48(3):033101.
[36] Khupse N D, Kumar A. Solvent-induced viscosity changes in ionic liquids - a review [J]. Proceedings of the National Academy of Science India Section-Physical Sciences, 2010,80A:1-12.
[37] Ochedzan-Siodlak W, Dziubek K, Siodlak D. Densities and viscosities of imidazolium and pyridinium chloroaluminate ionic liquids [J]. Journal of Molecular Liquids, 2013,177:85-93.
[38] 隋晓慧.离子液体在空气脱水中的应用研究[D]. 北京:北京化工大学, 2018. Sui X H. Research on the application of ionic liquids in air dehydration [D]. Beijing: Beijing University of Chemical Technology, 2018.
[39] Anderson J L, Dixon J K, Brennecke J F. Solubility of CO₂, CH₄, C₂H₆, C₂H₄, O₂, and N₂ in 1-hexyl-3-methylpyridinium bis (trifluoromethylsulfonyl) imide: Comparison to other ionic liquids [J]. Accounts of Chemical Research, 2007, 40(11): 1208-1216.
[40] Fernandes A M, Rocha M A A, Freire M G, et al. Evaluation of cation-anion interaction strength in ionic liquids [J]. Journal of Physical Chemistry B, 2011,115(14):4033-4041.
[41] Johansson K M, Izgorodina E I, Forsyth M, et al. Protic ionic liquids based on the dimeric and oligomeric anions:: [(AcO)_xH_x_-1]^- [J]. Physical Chemistry Chemical Physics, 2008,10(20):2972-2978.
[42] Li Q W, Gao G, Wang R J, et al. Role of 1-methylimidazole in regulating the CO₂capture performance of triethylenetetramine-based biphasic solvents [J]. International Journal of Greenhouse Gas Control, 2021,108:103330.
[43] 韩敬莉.离子液体预测型热力学模型及其在气体脱水过程中的应用[D]. 北京:北京化工大学, 2017. Han J L. Ionic liquid predictive thermodynamic model and its application in gas dehydration process [D]. Beijing: Beijing University of Chemical Technology, 2017.
[44] 张笑阳.带有短路气体的精馏塔板简化模型的研究[D]. 北京:北京化工大学, 2019. Zhang X Y. Research on Simplified model of distillation tray with short circuit gas [D]. Beijing: Beijing University of Chemical Technology, 2019.
[45] 李京.基于离子液体—有机胺水溶液脱碳技术的研究[D]. 保定:华北电力大学, 2018. Li J. Research on decarbonization technology based on ionic liquid organic amine aqueous solution [D]. Baoding: North China Electric Power University, 2018.
[46] Onda K, Takeuchi H, Okumoto Y. Mass transfer coefficients between gas and liquid phases in packed columns [J]. Journal of Chemical Engineering of Japan, 1968,1(1):56-62.