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Separation of Linalool from Limonene via Extractive Distillation with 1-Butyl-3-methylimidazolium Acetate as Entrainer
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-28 , DOI: 10.1021/acs.iecr.0c03646 Fernanda Ganem 1 , Silvana Mattedi 1 , Eva Rodil 2 , Ana Soto 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-28 , DOI: 10.1021/acs.iecr.0c03646 Fernanda Ganem 1 , Silvana Mattedi 1 , Eva Rodil 2 , Ana Soto 2
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Orange processing generates a high amount of waste rich in natural compounds that can be used to obtain added-value products or as raw material in biorefineries. Limonene (terpene) and linalool (oxygenated terpene) stand out among those bioproducts due to their organoleptic, antioxidant, and preservative properties. They are widely used in the food, cosmetic, and chemical industries, but their use as generally recognized as safe solvents is also gaining interest. In this work, separation of a mixture of limonene and linalool is proposed by extractive distillation with the ionic liquid 1-butyl-3-methylimidazolium acetate. To that aim, isobaric vapor–liquid equilibrium at 5 kPa was determined for the binary and ternary systems involved, and the data were successfully correlated with the NRTL and UNIQUAC models. The process was simulated, and the recovery of the ionic liquid was tested with a flash unit at very low pressure (0.1 kPa) or a stripping column (5 stages, 101.32 kPa) with air at the maximum operating temperature and a gas–liquid separator (101.32 kPa, 298.15 K). In the second case, an extractive column with an entrainer flow rate of 100 kg/h, number of stages N = 20, and reflux ratio R = 0.5 allows the separation of practically pure limonene and linalool.
中文翻译：
乙酸1-丁-3-甲基咪唑鎓盐为夹带剂的萃取蒸馏分离柠檬烯与柠檬烯
橙色加工会产生大量富含天然化合物的废物，这些废物可用于获得增值产品或作为生物精炼厂的原料。柠檬烯（萜烯）和芳樟醇（氧化萜烯）因其感官，抗氧化剂和防腐性能而在这些生物产品中脱颖而出。它们广泛用于食品，化妆品和化学工业中，但作为公认的安全溶剂，它们的使用也引起了人们的兴趣。在这项工作中，提出了通过用离子液体乙酸1-丁基-3-甲基咪唑鎓进行萃取蒸馏来分离柠檬烯和芳樟醇的混合物。为此，确定了涉及的二元和三元系统在5 kPa的等压气液平衡，并将数据与NRTL和UNIQUAC模型成功关联。这个过程是模拟的 离子液体的回收率用极低压力（0.1 kPa）的闪蒸装置或在最高工作温度下具有空气的汽提塔（5级，101.32 kPa）和气液分离器（101.32 kPa，298.15）进行测试。 K）。在第二种情况下，萃取塔的夹带流速为100 kg / h，级数N = 20，回流比R = 0.5允许分离几乎纯的柠檬烯和芳樟醇。
更新日期：2020-10-29
中文翻译：
乙酸1-丁-3-甲基咪唑鎓盐为夹带剂的萃取蒸馏分离柠檬烯与柠檬烯
橙色加工会产生大量富含天然化合物的废物，这些废物可用于获得增值产品或作为生物精炼厂的原料。柠檬烯（萜烯）和芳樟醇（氧化萜烯）因其感官，抗氧化剂和防腐性能而在这些生物产品中脱颖而出。它们广泛用于食品，化妆品和化学工业中，但作为公认的安全溶剂，它们的使用也引起了人们的兴趣。在这项工作中，提出了通过用离子液体乙酸1-丁基-3-甲基咪唑鎓进行萃取蒸馏来分离柠檬烯和芳樟醇的混合物。为此，确定了涉及的二元和三元系统在5 kPa的等压气液平衡，并将数据与NRTL和UNIQUAC模型成功关联。这个过程是模拟的 离子液体的回收率用极低压力（0.1 kPa）的闪蒸装置或在最高工作温度下具有空气的汽提塔（5级，101.32 kPa）和气液分离器（101.32 kPa，298.15）进行测试。 K）。在第二种情况下，萃取塔的夹带流速为100 kg / h，级数N = 20，回流比R = 0.5允许分离几乎纯的柠檬烯和芳樟醇。
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