Why does the pressure in the reflux tank decrease slightly when the temperature at the top of the stabilizer is increased?
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Why does the pressure in the reflux tank decrease slightly when the temperature at the top of the stabilizer is increased?
Isn’t the pressure in the reflux tank roughly the same as the pressure at the top of the tower?
Temperature reflects the composition; as temperature rises and pressure remains constant, the composition becomes heavier, and naturally the pressure in the reflux tank will decrease slightly
As the top temperature rises, the thermal bypass system is used to stabilize the pressure at the top of the tower; since more heat exchangers are involved, the pressure drop increases, resulting in a slight decrease in the pressure in the reflux tank
I think it’s the high temperature at the top of the tower that leads to a decrease in reflux flow, which in turn results in a lower reflux temperature. A lower temperature in the reflux tank causes the vapor pressure to drop, leading to a decrease in pressure