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高等教育weekppt課件-展示頁

2024-10-28 06:21本頁面
  

【正文】 or – how es the vapor flow? Pressure difference. – How es the difference? The reboiler and steam. System design of multiponent mixture ? Continuous operation – n ponents – n1 tower – n pure products ? Batch operation Continuos distillation and batch distillation ? Batch distillation: differential distillation – without stripping section ? Other aspects of distillation Azeotropic distillation ? Benzene as azeotropic agent ? A new azeotropic mixture forms ? Water is being more volatile than without azeotropic agent ? Separation factor ? bees larger. Azeotropic distillation 1 BEW WEB 2 3 EW % E EWB EWB EW %W EW B: benzene E: ethanol W: water EWB: azeotropic EW: azeotropic Extractive distillation ? Salt or glycol is added as extraction agent ? water is being less volatile than without extraction agent ? separation factor ? bees larger. Extractive distillation 1
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