The condensation effect is poor.
Thread Content
In five-column differential pressure distillation, the condensation effect is poor during summer; when less steam is used, the tower pressure does not decrease instead. In this situation, is it better to continue increasing the tower pressure, or is reducing the vacuum more effective? The temperature and flow rate of the condensate water are already fixed values that cannot be changed.
The main reason is the high atmospheric temperature; therefore, it is necessary to reduce the load in order to maintain production capacity despite such high temperatures.
Increasing the tower pressure may affect the degree of separation, resulting in product purity that does not meet the requirements； Lowering the vacuum reduces the overall temperature of the tower, but the steam volume also needs to be adjusted accordingly, which may bring certain benefits.
As the tower pressure increases, the boiling point of the material also rises; if the condensation temperature remains constant, then less material will be in the gas phase