Catalytic fractionation tower
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Our distillation column’s top is controlled by cold reflux to determine the dry point of the crude gas oil (without circulating reflux), and its processing capacity is low. At full load operation, the pressure at the top of the tower increases, while the pressure in the reflux tank decreases. Given the low gas production volume and high liquid load at the tower top, which leads to excessive hydraulic pressure and an increase in the pressure in the gas phase, the liquefied gas yield remains at the design level. I would like to ask how to calculate the gas phase flow rate
When calculating the gas flow rate, the fractionating tower should be calculated in segments. The gas and liquid phases differ in different tray sections. It is recommended to entrust the tower internals manufacturer to carry out hydraulic calculations.
This is probably caused by high resistance in the tower top cooler; consider the possibility of an issue with the cooler