What recovery processes are used for the concentration and recovery of waste acid?
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Our company has several types of waste acids that need to be recovered. Are there any advanced processing technologies available to concentrate them to the desired concentration?
Topsoe’s WSA waste acid regeneration process can concentrate waste acid to 98%.
Okay, thank you. Are there any relevant cases?
It is widely used in refineries; downstream of the alkylation units, there is often a waste acid regeneration unit to recover waste sulfuric acid.
What waste acid? Sulfuric acid? Hydrochloric acid? Nitric acid... what’s the concentration? To what high concentration needs to it be concentrated?
What components? We have cases of mixed acid concentration
Where does the poster get all these various types of acid? What are their components? Different acids require different concentration processes; it’s too vague to answer directly. Anyway, sulfuric acid undergoes evaporation and cracking. For hydrochloric acid, precipitation is used; for phosphoric acid and nitric acid, evaporation and stripping are employed; for hydrofluoric acid, vaporization separation is used, and so on. Since the question is not clear, this is as far as I can go in my answer