Title:
オレフィンの製造法
Document Type and Number:
Japanese Patent JP4838996
Kind Code:
B2
Abstract:
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 olefines 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 steam 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 C 4 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 C 4 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.
Inventors:
Gros jyans, jewker
Van Lice Leveque, Vallier
Bameilen, Walter
Van Lice Leveque, Vallier
Bameilen, Walter
Application Number:
JP2004508209A
Publication Date:
December 14, 2011
Filing Date:
May 22, 2003
Export Citation:
Assignee:
Total Petrochemicals Research Ferry Yui
International Classes:
C07C4/06; C07C11/04; C07C11/06; C10G11/05; C10G51/04; C07B61/00
Domestic Patent References:
| JPH11246445A | 1999-09-14 | |||
| JPH11246869A | 1999-09-14 | |||
| JP2001031979A | 2001-02-06 | |||
| JP2001031980A | 2001-02-06 | |||
| JP2001040369A | 2001-02-13 |
Foreign References:
| WO2000010948A1 | 2000-03-02 | |||
| US6033555A | 2000-03-07 | |||
| WO2001004237A2 | 2001-01-18 |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office