公开(公告)号：EP0883664A1

公开(公告)日：1998-12-16

申请号：EP96934152.0

申请日：1996-10-11

申请人： The M.W. Kellogg Company ,  MOBIL OIL CORPORATION

发明人： GOEBEL, Kenneth, W. ,  HILBERT, Timothy, Lee ,  HUNTER, Michael, G. ,  PAPPAL, David, A. ,  GENTRY, Arthur, R. ,  PARTRIDGE, Randall, David

IPC分类号： B01J29 ,  C10G45 ,  C10G65 ,  C10G73

CPC分类号： C10G65/12

摘要： Petroleum products are refined in an integrated hydroprocessing scheme involving a hydrocracking stage (1) and subsequent dewaxing stage (16). Materials boiling in the middle distillate or lube oil range may be dewaxed. The bottoms streams (12, 34) and optionally other streams from each stage are maintained separately from one another during processing. Dewaxing may occur using either hydroisomerization catalysts or shape-selective catalysts or both in series. One embodiment employs a baffle (14) in the flash zone of a fractionator (13) to separate bottoms streams from each other. Alternatively, the effluent (4) from the hydrocracking stage may be processed separately from the effluent (18) from the dewaxing stage. The bottoms fraction from the dewaxing stage may be recycled back to the hydrocracking stage for futher processing or used as lube base stock.