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Ionic Liquid Design and Process Simulation for Decarbonization of Shale Gas
Liu, XY; Huang, Y; Zhao, YS; Gani, R; Zhang, XP; Zhang, SJ

Ionic liquids (Ms) have been receiving increasing attention as a potential decarbonization solvent. However, the enormous number of potential ILs that can be synthesized makes it a challenging task to search for the best IL for CO2 removal from methane. In this work, a method was proposed to screen suitable ILs based on the COSMO-RS (conductor-like screening model for real solvents) model, an absorption mechanism, and experimental data. Besides the Henry's constant, the viscosity and toxicity of ILs should also be taken into consideration for an industrial decarbonization process. Furthermore, process simulation was performed to evaluate the new IL-based decarbonization technology. Considering CO2 solubility, CO2/CH4 selectivity and toxicity and viscosity of ILs, [bmim][NTf2] has been screened to be the potential solvent among 90 classes of ILs. Based on reliable experimental data, a rigorous thermodynamic model was established. The simulation results have been found to agree well with the available experimental results. Two process flow sheet options, use of two single-stage flash operations or a multistage flash operation following the absorber, have been simulated and assessed. Compared with the well-known MDEA (methyldiethanolamine) process for CO2 capture, the single-stage and multistage process alternatives would reduce the total energy consumption by 42.8% and 66.04%, respectively.

KeywordPressure Phase-behavior Carbon-dioxide Capture Alkyl Chain-length Co2 Capture Cosmo-rs Dimethyl Ether Natural-gas Solubility Separation Prediction
WOS HeadingsEngineering
WOS IDWOS:000376825300015
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Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
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GB/T 7714
Liu, XY,Huang, Y,Zhao, YS,et al. Ionic Liquid Design and Process Simulation for Decarbonization of Shale Gas[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2017,55:5931.
APA Liu, XY,Huang, Y,Zhao, YS,Gani, R,Zhang, XP,&Zhang, SJ.(2017).Ionic Liquid Design and Process Simulation for Decarbonization of Shale Gas.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,55,5931.
MLA Liu, XY,et al."Ionic Liquid Design and Process Simulation for Decarbonization of Shale Gas".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 55(2017):5931.
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