公开(公告)号：EP0664827A4

公开(公告)日：1995-10-11

申请号：EP93924351

申请日：1993-10-19

申请人： MOBIL OIL CORP

发明人： FLETCHER DAVID LEE ,  HILBERT THIMOTHY LEE ,  PAPPAL DAVID ANDREW ,  RUMSEY DAVID WAYNE ,  TEITMAN GERALD JOSEPH

IPC分类号： C10G35/04 ,  C10G59/00 ,  C10G65/04 ,  C10G67/12 ,  C10G69/08 ,  C10G45/00 ,  C10G61/02

CPC分类号： C10G69/08 ,  C10G65/043 ,  C10G67/12

摘要： A cracked FCC naphtha is withdrawn through line (12) and passes to a mercaptan oxidation (sweetening) unit (13) in which the mercaptans are converted to higher boiling disulfide compounds. The effluent from the mercaptan oxidation unit is then passed to fractionator (14) in which it is split into a higher boiling fraction and a lower boiling fraction. The lower boiling fraction is collected and is free of mercaptans and retains high octane olefin content. The higher boiling fraction is hydrotreated (16) to remove sulfur and then sent to a shape-selective reactor to restore the octane loss.