Are there any packed towers in use that operate in co-current mode?
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In theory, packed towers can operate in countercurrent or co-current mode; co-current operation is particularly suitable for situations involving highly soluble gases or large gas-liquid flow rates. In your respective production departments, are there any examples of packed towers operating in co-current mode? We would appreciate it if you could provide such examples and help us analyze the reasons for using co-current operation.
Haven’t seen it yet. Lz, share your experience.
Packed tower? For the absorption tower, but how about parallel flow for a distillation tower? We do have a reactor that operates in co-current mode.
What type of reactor is the parallel-flow reactor used by the moderator on the 3rd floor? And why is a parallel-flow design chosen? I hope the moderator can share their opinion; I’d like to know. Packed towers are used in co-current operation, generally for absorption; packed distillation towers are not believed to be suitable for co-current operation. I wonder if there are any packed absorption towers that can operate in co-current mode? Friends who know about it, let’s discuss it.
I have seen counter-current operation in quench towers, but I have never seen one with no packing inside. The packed tower with co-current flow mentioned by the original poster is actually something I saw during my practical training; I recall it being used in a chemical plant in Dagu to absorb SO2 gas.
Haven’t heard of it; everyone needs to do some research! Valuable
The alkali solution oxidation regeneration tower in the desulfurization unit operates in co-current mode, with flow entering from the bottom of the tower and exiting from the top.
The PTA plant is equipped with a liquid condensate contactor in the solvent dehydration tower, which operates in co-current mode. Both gas and liquid flow from the top, then after mixing they exit at the bottom of the tower; part of it becomes gas. This is usually not considered distillation. Physical mixing, either by cooling or by diluting the concentration