Ionic Liquids in Extractive Distillation Solvent Selection, Conceptual Process Design, and Pilot Plant Validation
نویسندگان
چکیده
منابع مشابه
Extractive distillation with ionic liquids as solvents : selection and conceptual process design
In this chapter, a solvent selection methodology for extractive distillation processes is applied to identify promising ionic liquid (IL) solvents for the following separation cases: methylcyclohexane/toluene, 1-hexene/n-hexane and ethanol/water. Thermodynamic and phase stability analysis are done in order to understand the strong interactions between the solutes and the ionic liquids (solvents...
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The investment and annual costs for a separation of aromatic hydrocarbons from a naphtha feed (~10 % aromatics) can be 35 to 70 % lower for an extraction with ionic liquids compared to an extraction with sulfolane. Aromatic hydrocarbons (benzene, toluene, ethyl benzene and xylenes) and C4 C10 aliphatic hydrocarbons are normally separated by liquid extraction, extractive distillation or azeotrop...
متن کاملIonic Liquids and Hyperbranched Polymers – Promising New Classes of Selective Entrainers for Extractive Distillation
Ionic liquids (IL) and hyperbranched polymers (HyP) represent new classes of nonvolatile selective solvents. By measuring vapor-liquid equilibria (VLE) of azeotropic and close boiling systems in the presence of ionic liquids or hyperbranched polymers, separation factors are derived and the potential of using IL and HyP as entrainer for extractive distillation is discussed. Exemplarily, the supe...
متن کاملAn approach for solvent selection in extractive distillation systems including safety considerations
The selection of solvents in the chemical industry is typically based on performance and economic considerations. Other relevant aspects, such as the safety implications that a given solvent generates for the process, are generally left for their consideration after the design of the process has been completed. In this work, an approach for solvent selection including safety considerations at t...
متن کاملIonic Liquid Selection and Performance Evaluation for the Separation of Methylcyclohexane/toluene by Extractive Distillation
The effectiveness of an extractive distillation process relies on the choice of the extractive solvent. The conventional methodology to select solvents is based on Group Contribution Methods. Ionic liquids have shown several advantages over conventional solvents used in extractive distillation and liquid-liquid extraction processes. However, there is no existing methodology to select ILs as sol...
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ژورنال
عنوان ژورنال: Chemie Ingenieur Technik
سال: 2013
ISSN: 0009-286X
DOI: 10.1002/cite.201250741