Liquid-phase material for introduction
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When a distillation column is operated in full reflux mode, it is generally necessary to pressurize the vapor phase first, and then introduce the liquid phase material. When introducing liquid-phase materials, generally the heavier components are introduced first, followed by the lighter components (for example, liquid-phase C3 is introduced first, then liquid-phase C2). In a distillation tower under pressure, the lighter liquid-phase components are introduced first, whereas the heavier ones are introduced later – what is the difference between these two approaches? What are the hazards of introducing the light components of the liquid phase first and then the heavy components? I hope an expert can give some advice. Thank you.
In principle, the separation of heavy and light components in the liquid phase should require a certain residence time and spatial conditions. Are the differences between whether the components are already separated or still in the process of separation determined by these various operational conditions?