Catalytic cracking absorption tower
Thread Content
I would like to ask: if a liquid level control is not established in the absorber tower of a catalytic cracking unit, will it affect the absorption efficiency? If so, is the impact significant?
Does the liquid level referred to by the poster mean the liquid level at the bottom of the tower?
Yes, it refers to the liquid level at the bottom of the absorption tower. In other words, is level-controlled operation more effective, or level-free operation more effective?
The liquid level at the bottom of the absorption tower has no effect on the absorption efficiency. However, if the liquid level is too low, it can cause the bottom pump to experience vacuum. I wonder why the original poster asked this question?
I agree with Chengkang’s view; the liquid level at the bottom of the tower has no impact on the absorption efficiency, so I was a bit puzzled by the difference and asked this question. I wonder what the purpose of the OP considering whether to establish a liquid level at the bottom of the tower is?
The oil at the bottom of our absorption tower flows automatically into the rich gas liquid separation tank at the outlet of the compressor; the liquid level at the bottom of the absorption tower is not controlled. I wonder if it has an impact on the absorption effect.
This should have no impact. The absorption efficiency is determined by factors such as the absorption dose, the amount of enriched gas, and the top pressure of the tower; as long as you control the liquid level at the bottom of the absorption tower properly, that’s enough