To control the purity of the product at the top of the tower, should cooling water be used to regulate the temperature of the gas phase at the top of the tower, or the temperature of the liquid phase in the condenser?
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To control the purity of the product at the top of the tower, should cooling water be used to regulate the temperature of the gas phase at the top of the tower, or the temperature of the liquid phase in the condenser?
Generally, the liquid phase temperature and gas phase pressure are controlled.
If bubble point reflux occurs, the liquid phase temperature can be controlled at that time； But if it is a cold reflux, is the liquid phase temperature also controlled? Why not control the gas phase temperature directly, which would be more straightforward?
Control is always related to the manufacturing process~ Asking about it separately just leads to general statements, so it has little practical value
{:3_54:} It’s certainly not appropriate to control the top temperature and specify feeding at a certain bubble point; it’s sufficient to monitor the tower’s top temperature. After operating for some time, one will know what range of fluctuations indicates that the material is of acceptable quality