Regarding reducing the temperature of the top condenser
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If there is a distillation column, with the feed rate remaining constant and the top pressure unchanged (the material leaving the top of the column is gas, and the column pressure can be controlled using a discharge valve), and if the water flow rate in the top condenser is increased to significantly lower the temperature of the condenser, what changes will occur in the top temperature, bottom temperature, components at the top and bottom of the column, as well as the amounts of material discharged from each section? ? ?
Under normal circumstances, what is the purpose of increasing the water circulation volume in the tower top condenser in order to significantly lower the temperature of the condenser? Generally, by lowering the temperature of the condenser, you also reduce the temperature of the reflux stream, which leads to an imbalance of heat within the tower. In order to achieve the desired operating conditions and maintain heat balance in the tower, the tower pressure may drop in the short term and the liquid level at the bottom of the tower may rise. Over time, equilibrium is restored, and this ultimately results in increased heating requirements at the bottom of the tower, leading to energy waste ； In practice, unless there are specific requirements regarding the temperature of the overhead product or if the composition of the feed changes, it is not advisable to lower the temperature of the overhead stream ；