Styrene tower
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I would like to ask experts in styrene: why is the outlet at the bottom of the ethylbenzene/styrene separation tower designed to have a conical shape?
1. Reduce the residence time of the liquid in the tower bottom (styrene is a heat-sensitive material),； 2. Maintain the liquid level to increase the driving force for flow into the heat exchanger.
Reduce the high-temperature residence time of styrene to prevent polymerization. The thermosiphonic type increases the reboiling driving force in the reboiler.
Reduce the high-temperature residence time of styrene to prevent polymerization. The thermosiphonic type increases the reboiling driving force in the reboiler.
To prevent polymerization, coking in styrene systems is also quite severe
The bottom of the styrene distillation column is designed as a relatively narrow circle; its small design diameter results in a small volume, a low cross-sectional area through which fluid can pass per unit time, high flow rates, and short residence times. This helps to effectively reduce the formation of polymers by SM at high temperatures. At the same time, a high flow rate can improve the heat transfer efficiency of the reboiler at the bottom of the tower.
Agree with what was said on floor 5: reducing the polymer flow rate of SM at high temperatures can improve the heat transfer efficiency of the reboiler at the bottom of the tower
Prevent aggregation. Reduce residence time.