- De-asphalting unit
A de-asphalting unit separates the
asphaltfrom the rest of the crude oil residue. The de-asphalterunit is usually placed after the vacuum tower in a crude oil refinery. The process is often referred to as a solvent de-asphalter, SDA. And the crude oil remaining after the de-asphalting is referred to as de-asphalted oil, DAO.
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