Why is the diameter larger at the bottom and smaller at the top of the hydrogen sulfide removal stripping tower?
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Why is the diameter larger at the bottom and smaller at the top of the hydrogen sulfide removal stripping tower?
Simply put, it is to ensure a certain gas flow rate. As gas and liquid phases come into contact, the higher one goes, the fewer gas-phase components there are. If the diameter remains the same, the gas velocity decreases significantly, preventing adequate contact with the liquid phase; therefore, it is necessary to reduce the tower diameter in order to increase the gas velocity and ensure effective mass and heat transfer.
If the gas velocity decreases and the light components cannot rise, it is necessary to reduce the reflux ratio; as a result, the separation of products at the tower top is not as good, is that what it means?
Because the liquid phase load is low, the upper part is thin.
Thickening below can increase the liquid-phase evaporation area, boost the evaporation rate, and reduce energy consumption； Increasing the fineness above can raise the gas flow velocity, enabling thorough contact between the gas and liquid phases and thereby improving mass transfer efficiency.