Al Otaibi Raja L, Liu Dong, Hou Xulian, Song Linhua, Li Qingyin, Li Mengfei, Almigrin Hamid O, Yan Zifeng
Petrochemical Research Institute, King Abdulaziz City for Science and Technology, PO Box 6086, Riyadh, 11442 Kingdom of Saudi Arabia.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580 China.
Appl Petrochem Res. 2015;5(4):355-362. doi: 10.1007/s13203-015-0112-3. Epub 2015 Jun 6.
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.
采用过氧化氢 - 乙酸氧化体系对沙特阿拉伯原油进行氧化萃取脱硫研究。考察了萃取剂的选择、氧化萃取条件的优化以及脱硫机理。以N,N - 二甲基甲酰胺（DMF）为萃取剂，在70℃、过氧乙酸与硫的摩尔比为8:1、乙酸与过氧化氢的摩尔比为2:1、萃取剂与油的体积比为1:1的条件下，获得了35.11%的最佳脱硫率和95%的油回收率。由于硫化合物的类型和结构不同，处理后的沙特阿拉伯原油中不同馏分的脱硫效果遵循以下顺序：汽油 - 柴油馏分＞减压瓦斯油馏分＞减压渣油馏分。油品质量受影响较小，大部分硫化物主要通过DMF萃取。
