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1. 发明公开

EP1506271A1 PRODUCTION OF OLEFINS 审中-公开
标题翻译：生产烯烃
公开(公告)号：EP1506271A1
公开(公告)日：2005-02-16
申请号：EP03755125.6
申请日：2003-05-22
申请人： ATOFINA Research
发明人： GROOTJANS, Jacques , VANRYSSELBERGHE, Valérie , VERMEIREN, Walter
IPC分类号： C10G51/04 , C10G11/05
CPC分类号： C10G11/05 , C10G51/04 , C10G2300/1044 , C10G2300/1088 , C10G2300/4018 , C10G2300/807 , C10G2400/20
摘要： A process for steam cracking a hydrocarbon feedstock containing olefins to provide increased light olefins in the steam cracked effluent, the process comprising passing a first hydrocarbon feedstock containing one or more olefins through a reactor containing a crystalline silicate to produce an intermediate effluent with an olefin content of lower molecular weight than that of the feedstock, fractionating the intermediate effluent to provide a lower carbon fraction and a higher carbon fraction, and passing the higher carbon fraction, as a second hydrocarbon feedstock, through a stream cracker to produce a steam cracked effluent. There is also provided a process for steam cracking a hydrocarbon feedstock containing olefins to provide increased light olefins in the steam cracked effluent, the process comprising passing a first hydrocarbon feedstock containing one or more olefins, which comprises at least one of a hydrotreated raw C4 feedstock, LCCS, a raffinate 2 feedstock, a raffinate 1 feedstock, a raffinate 2 feedstock from a methyl tert-butyl ether (MTBE) or an ethyl tert-butyl ether (ETBE) unit, a raffinate from an olefins metathesis unit, in particular for the production of propylene from ethylene and butene, or a hydrotreated olefin-containing stream from an FCC unit, a visbreaker or a delayed coker, through a reactor containing a crystalline silicate to produce an intermediate effluent with an olefin content of lower molecular weight than that of the feedstock, and passing the intermediate effluent as a second hydrocarbon feedstock through a steam cracker to produce a steam cracked effluent. There is further provided a process for steam cracking a hydrocarbon feedstock containing olefins to provide increased light olefins in the steam cracked effluent, the process comprising steam cracking a first hydrocarbon feedstock comprising a paraffin-containing hydrocarbon feedstock and steam cracking a second hydrocarbon feedstock which contains C4 and higher hydrocarbons, the second hydrocarbon feedstock containing one or more olefins and comprising a bottom fraction of an intermediate effluent produced by catalytic cracking of a third hydrocarbon feedstock in a reactor containing a crystalline silicate to produce the intermediate effluent having an olefin content of lower molecular weight than that of the third feedstock, and combining the two steam-cracked effluents to provide a common effluent.

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