Extraction distillation process refers to a separation technique that combines extraction and distillation, often used for separating mixtures that are difficult to separate by conventional distillation methods, such as azeotropic mixtures.

Key Features and Applications of extraction distillation process
extraction distillation process of Energy-Efficient Process: A new energy-efficient extraction-distillation process has been developed to separate diluted azeotropic acetonitrile-water mixtures. This method uses an extraction column without needing reboiler duty, resulting in significant savings of 40.3% in steam cost and 34.7% in total annual cost compared to a three-column extractive distillation system .
extraction distillation process of Solvent Selection: The use of efficient solvents, such as n-propyl chloride, is crucial in the extraction process to separate organic compounds from water .
High-Value Applications: The process is also used in the extraction of volatile constituents from traditional Chinese medicine, such as Herba Selaginellae and Cortex Moutan, where it has shown high extraction efficiency .
extraction distillation process of Ion Liquid Additives: Ion liquids are used as additives in extraction-distillation processes to improve separation efficiency, reduce energy consumption, and increase product purity

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