Dehydration of ethanol with different salts in a packed distillation column |
| |
| Institution: | 1. Universidade Federal Rural do Rio de Janeiro, Chemical Engineering Department, BR 465, km 7, CEP 23890-000 Seropédica, Rio de Janeiro, Brazil;2. Escola de Química, Universidade Federal do Rio de Janeiro, Brazil;1. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, PR China;2. Korean Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea;3. Department of Bioinformatics, University of Sciences and Technology, Daejeon 305-350, Republic of Korea;4. Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 135-710, Republic of Korea;5. Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, PR China;1. Institute of Nutrition and Functional Foods (INAF), Université Laval, Quebec, QC G1V 0A6, Canada;2. Department of Food Sciences and Nutrition, Université Laval, Quebec, QC G1V 0A6, Canada;3. Natural Resources Canada/CanmetENERGY, 1615 Lionel-Boulet Blvd., P.O. Box 4800, Varennes, QC J3X 1S6, Canada;4. Department of Soil Sciences and Agri-Food Engineering, Université Laval, Quebec, QC G1V 0A6, Canada |
| |
| Abstract: | This work aimed the evaluation of a saline extractive distillation for the ethanol production. A thermodynamic model was used to predict the influence of the salts in the liquid–vapor equilibrium of the system water–ethanol and inside the packed column. The experiments were done in a distillation unit, with an internal diameter of 5.9 cm and a packing section with 37 cm of height, packed with raschig rings with 0.73 cm of characteristic inner made of glass. All the bottom and top samples were analyzed by refractive index. Two synthetic charges with the same composition of ethanol that are produced in the refinery (0.02 and 0.25 mol.L-1) were distilled under atmospheric pressure. Sodium chloride, calcium chloride, potassium acetate, calcium nitrate and a mixture of sodium and potassium acetates were added to the synthetic charges and the results were compared to the experiments already done without the presence of the salts, revealing the ethanol enrichment in the top product of the distillation unit, for all the systems analyzed. Another charge from the refinery, known as load of wine without yeast, was evaluated and the results indicated the same behavior, enriching the ethanol with the application of the saline extractive distillation. |
| |
| Keywords: | Raschig rings Extractive distillation Mass transfer |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
