title: Desulfurization of Saudi Arabian crudes by oxidation-extraction method.
abstract: The oxidation-extraction desulfurization of Saudi Arabian crudes was conducted with hydrogen peroxide-acetic acid oxidation system. The selection of extractant, the optimization of oxidation-extraction conditions, and the exploration of desulfurization mechanism were studied. As DMF was used as the extractant, the optimal desulfurization rate of 35.11 % and oil recovery of 95 % were obtained at 70 °C with the molar ratio of peracetic acid to sulfur of 8:1, the molar ratio of acetic acid to hydrogen peroxide of 2:1 and the volume ratio of extractant to oil of 1:1. The desulfurization effect of different fractions in the treated Saudi Arabian crudes was found to obey the following order: gasoline-diesel fraction >VGO fraction >VR fraction, due to different types and structures of sulfur compounds. The oil quality was less affected and most sulfides were mainly extracted via DMF.
authors.affiliation: Petrochemical Research Institute, King Abdulaziz City for Science and Technology, PO Box 6086, Riyadh, 11442 Kingdom of Saudi Arabia.
authors.forename: Raja L
authors.initials: RL
authors.lastname: Al Otaibi
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580 China.
authors.forename: Dong
authors.initials: D
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580 China.
authors.forename: Xulian
authors.initials: X
authors.lastname: Hou
authors.affiliation: College of Science, China University of Petroleum, Qingdao, 266580 China.
authors.forename: Linhua
authors.initials: L
authors.lastname: Song
authors.affiliation: College of Science, China University of Petroleum, Qingdao, 266580 China.
authors.forename: Qingyin
authors.initials: Q
authors.lastname: Li
authors.affiliation: College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266000 China.
authors.forename: Mengfei
authors.initials: M
authors.lastname: Li
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580 China.
authors.forename: Hamid O
authors.initials: HO
authors.lastname: Almigrin
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580 China.
authors.forename: Zifeng
authors.initials: Z
authors.lastname: Yan
keywords: Desulfurization; Fractions; Oxidation–extraction; Saudi Arabian crudes