Average relative volatility of the distillation column
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Dude, how do you calculate the average relative volatility of an entire distillation column?
It is recommended to get a copy of \"Principles of Chemical Engineering\" to read; the problem seems too complex. Check the book to see which category it belongs to. For reference.
For ideal systems, rough calculations are meaningful； For non-ideal systems, it is still necessary to take into account the effect of temperature, pressure, and composition on relative volatility; modern simulation calculations generally take this effect into consideration
May I ask how to determine the temperatures at the top and bottom of a vacuum distillation column? Is the top of the tower at the boiling point temperature of the light components under operating negative pressure? Is the bottom temperature of the tower the boiling point temperature of the heavier components, after the pressure has been reduced by the plate drop?
A mixture does not have a boiling point; the top of the tower is generally the dew point temperature of the mixture at that pressure, while the bottom of the tower is the bubble point temperature
Essentially, it is bubble point calculation, that is: given the top pressure and product composition (purity), determine the corresponding bubble point. If the product is pure enough, then the boiling point of the product corresponding to the pressure at the top of the tower is the respective temperature ； The same is true for the bottom temperature of the tower.