Discussion on the optimal location for adding antifoam agent in the solvent regeneration tower.
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The location where the defoamer is added to the solvent regeneration unit can be either in the rich liquid pump before it enters the tower, or through the acidic water reflux pump at the top of the tower; it may also be added to the amine solution buffer tank. What are the advantages and disadvantages of each of these methods?
I hope it can explain what kind of device or process it is. The optimal filling position can only be determined after quality processing – are you referring to aromatic liquid-liquid extraction or extractive distillation? The liquid-liquid extraction antifoam is added to the feed of the stripping tower, while the extraction distillation agent is added at the inlet of the solvent in the extraction distillation tower. I hope this is helpful to you!
In plants for processing liquefied gas and dry gas, desulfurization is carried out using lean amine solution (MDEA); the amine solution after desulfurization is sent to a solvent regeneration unit for treatment, while acidic gases are sent to sulfur recovery units. The lean amine solution is recycled, and it is this solvent regeneration unit that I am referring to.
Personally, I think the key is to be able to eliminate foam quickly and effectively~
Our solvent desulfurization unit has never used an antifoam agent, although the design specifies that the antifoam agent should be injected at the reflux line