Questions about the tower
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I’m Cai Cai. In the process model I’m working with, the distillation column doesn’t have a bottom reboiler nor a top condenser for reflux; its interior features a packing structure. It seems that this type of module isn’t available in HYSYS. What should I do? There’s another column in the model that also lacks a bottom reboiler and a top condenser for reflux, but it has two feed streams, while I only have one feed stream. What should I do in this case? Thank you
An absorption tower has neither a reboiler nor a condenser; it must have two feed streams. Are you sure that what you have is a distillation tower and not a flash tower?
If there is neither a reboiler nor a condenser, then the distillation column simply cannot operate! ! ! It should be a parsing tower or an absorption tower! ! !
For modules that have neither a reboiler nor a top condenser, they are either absorption towers or stripping towers or desorption towers. If there is only one feed stream and multiple outlet streams, then it becomes a flash tank.
Did the poster not pay attention to the stripping steam at the bottom of the tower?
There is only one feed stream, and no vapor from the bottom of the tower
You chose the wrong tower; you need to select a distillation tower module
It seems like the latter is a flash tank... The former is easier to handle; an absorber will do
Could you explain in more detail what kind of situation it is? Everyone can help you choose better
I’m sorry everyone, but I think it’s better to treat it as a flash tower. There is indeed some packing inside the tower; there is only one feed inlet at the top of the tower, while there are two outlets, one at the bottom and one at the top. I think it’s appropriate to consider it a flash tower. What do you think?