What are the effects of an increased tower pressure drop?

The heating medium consumption of the reboiler increases, the temperature of the tower and the reactor rises, and the density of the vapor increases

Put it another way, what causes an increase in the tower pressure difference? 1. The feed load has increased! 2. The heat load has increased! 3. The reflux has increased! 4, The tray is blocked! 5, The gauge is broken! That’s all I can think of for now!

A large pressure drop in the tower reduces the volatility of the light components, resulting in an insufficient extraction rate and a decreased separation efficiency of the tower

Regarding the answer for floor 3, it’s quite comprehensive: Put it another way, what causes an increase in the pressure difference across the tower? 1. The feed load has increased! -An increase in feed rate leads to a higher vapor-liquid load inside the tower, resulting in an increased pressure drop ； 2. The heat load has increased! -The heat load increases, the vapor load inside the tower rises, and the pressure drop increases ； 3. The reflux has increased! -This is related to the heat load; as the liquid flow rate (load) increases, the pressure drop also increases ； 4, The tray is blocked! -This is serious; it may cause severe foam entrainment and flooding, and even tower flooding ； 5, The gauge is broken! -This one. . . . As can be seen from the above, if the pressure drop in the tower increases and it is not due to the effects of instruments or feed, then there is definitely a problem with the operation of the tower. It is necessary to find out the reason. Furthermore, changes in the feed composition, as well as whether the discharge and feed are balanced, can also affect the pressure.

1. The feed load has increased. 2. The heat load has increased! 3. The reflux has increased! 4, The tray is blocked! 5, The gauge is broken! Additional note: The first three items can be adjusted ； But points 4 and 5 are difficult to handle ； The pressure drop caused by plate blockage in the tower is generally high and tends to increase over time; in such cases, the tower has to be shut down for maintenance. Our towers often get blocked – at first it’s still possible to operate them, but gradually it becomes impossible, as any attempts to operate them are futile as the product quality remains unsatisfactory. Therefore, the tower must be shut down for cleaning. If it’s a problem with the gauge, there are two possibilities: either the gauge is broken and the values it displays are inaccurate ； Secondly, the pressure tapping tube of the instrument used to measure the pressure drop gets blocked by something, resulting in inaccurate pressure measurement and thus incorrect display values.