Backflow decreases, tower pressure rises
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While looking at the question bank, there was a true/false question: In the operation of a tower, reducing the reflux rate will cause the pressure in the tower to increase. Answer: Yes. I wonder why? I’m a bit stuck and would appreciate some guidance from everyone.
Do you mean that there are more gas-phase components?
The top temperature of the reflux column increases rapidly; as a result, the load on the top condenser rises, the cooling rate slows down, and since the amount of gas entering the column remains unchanged, the column pressure naturally increases.
As the reflux flow decreases, less of the heavy components are pressed down, resulting in more light components; therefore, the tower pressure surely increases
I’ve seen similar questions; it seems the issue is that when the pressure in the reflux column increases, the pressure in the main column also rises. I don’t understand
It can be understood in this way: fewer components get condensed, while more components remain in the gas phase. What kind of question bank is this? ;P
The backflow decreases, the medium temperature and the top temperature rise, and as a result the pressure increases. In fact, according to PV=NRT, it is the NT product that must increase for the pressure to rise
The backflow decreases, the medium temperature and the top temperature rise, and as a result the pressure increases. In fact, according to PV=NRT, it is the NT product that must increase for the pressure to rise
The reflux decreases, the top temperature of the tower rises, and the load on the top condenser increases. The feed rate remains unchanged, but the gas coming from the top of the tower improves the efficiency with which the feed is heated, resulting in an increase in the feed temperature； . The backflow decreases, the top temperature rises, and subsequently the temperature in the middle section also increases ； The pressure in the tower thus increases