Distillation problem
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I would like to ask: if the steam volume at the bottom of the tower remains constant and all other operating parameters stay the same, and the amount of waste vapor discharged is reduced, will the liquid level at the bottom of the tower rise? How will the temperature at the bottom of the tower change?
I don’t understand; I thought it was going up.
This depends on the recovery rate; if the recovery rate remains unchanged and the feed volume is reduced accordingly, it means that the reflux flow at the top of the tower increases. In such a case, the content of light components in the product at the top of the tower rises, while the heavy components become more concentrated at the bottom of the tower, causing the temperature at the bottom of the tower to increase slightly. However, if the recovery rate decreases while the feed rate remains constant, the output at the top of the tower decreases, the content of light components in the bottom of the tower increases, and the temperature at the bottom of the tower drops, with little variation in the pressure drop within the tower.