Vacuum Distillation Unit (VDU): further distills the residue oil from the bottom of the crude oil distillation unit. The vacuum distillation is performed at a pressure well below atmospheric pressure.
Solvent Can Be RecoveredName of solventName of solventMethanolIsopropanolEthanol (Can reach absolute ethyl alcohol)AcetonitrileMethylbenzeneEthyl acetateAcetoneTHFDichloromethaneDMFMethod of Solvent R...