Disposal of waste amine solution from solvent regeneration unit
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After passing through the automatically backwashed filter, which is part of the standard design of the solvent regeneration unit, the rich amine liquid flows into the underground waste amine tank. I would like to ask my colleagues: 1) What is the most appropriate way to handle the amine liquid in this waste amine tank, and which specific location within the system would be suitable for returning it to? 2) Is there a better filtering method for filtering rich amine liquid?
Ours returns directly to the amine liquid storage tank
There’s no proper place for the amine solution to go, unless it can be disposed of as hazardous waste. Generally, the amine solution resulting from backwashing contains more impurities; after settling in underground tanks for some time, it is sent back into the main tank. If the impurity content is too high, it can only be removed from the system through purification, filtration, or electrodialysis
We also started over by filling the amine storage tank
Actually, the answer given on the third floor was already very accurate
1. After natural settling for a period of time, start the subterranean pump to return the amine solution to the large tank； It is determined based on the level of solvent impurities in the system (the liquid obtained after desulfurization of coker liquefied gas contains a high amount of such impurities); it is advisable to clean the underground solvent tanks regularly (ensuring safe handling procedures), removing the sludge at the bottom of the tanks and disposing of it as hazardous waste. 2 Automatic backwashing can be considered relatively advanced
Yes, this is a standard design. There are a few questions: 1) Before returning it to the large tank, are there any better filtration and purification measures? For example, if the liquid is very dirty, frequent backwashing is required; in that case, the waste amine solution doesn’t have enough time to settle, so it has to be sent back into the system, carrying the impurities with it. 2) Is it feasible to return to the raw material rich liquid system after sedimentation? ；
The rich liquid should preferably not be handled manually; multiple stages of filtration can be applied before returning it to the large tank to remove impurities. Filtration and desalination of the lean liquid are even more important