公开(公告)号：EP1556462B1

公开(公告)日：2012-06-13

申请号：EP03809774.7

申请日：2003-10-29

申请人： Petróleo Brasileiro S.A. - PETROBRAS

发明人： DE LACERDA, Claudia Maria ,  MOREIRA, Elizabeth Marques ,  CERQUEIRA, Henrique Soares

IPC分类号： C10G11/18 ,  C10G51/06

CPC分类号： C10G51/06 ,  C10G11/05 ,  C10G11/18 ,  C10G2300/107 ,  C10G2300/1074 ,  C10G2300/1077 ,  C10G2300/202 ,  C10G2300/301 ,  C10G2300/308 ,  C10G2400/02 ,  C10G2400/28 ,  C10L1/04 ,  C10L2200/0438

摘要： A process is described for fluid catalytic cracking of hydrocarbons with high levels of basic nitrogen, where hydrocarbon feedstocks A and B with different levels of basic nitrogen are injected in a segregated fashion, into different risers of a multiple riser FCCU that possesses at least two risers. The injection of the feedstocks is made in such a way that feedstock A, to be injected in the riser with greater volume—main riser 7—possessing a level of basic nitrogen at least 200 ppm lower than the level of feedstock B to be injected into the riser with lower volume—secondary riser (8).