Operation analysis of the initial distillation tower
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Let’s analyze the following statements in detail: The process specifications for the initial distillation column state that, generally speaking, the Enneagram point of 95% for the side stream products is to be controlled, while the amount of side stream extracted is not restricted； Restrict the vaporization rate, release the heat from the feed plate ； Constrain the temperature of the first plate, release the heat absorption from the reflux ； Restrict the amount of material drawn from the top of the tower and control the amount of light components added at the bottom of the tower.
Due to production fluctuations and changes in the composition of the feed, the operation of the tower also changes. This can be understood in terms of an independent variable and a dependent variable; if both are set to be contradictory, it should be easy to understand if you have done process simulation