| US 7,344,635 B2 | ||
| Integral method for desulphurization of a hydrocarbon cracking or stream cracking effluent | ||
| Patrick Briot, Pommier de Beaurepaire (France); Pierre Boucot, Ternay (France); Alain Forestiere, Vernaison (France); Nathalie Marchal-George, Saint Genis Laval (France); and Florent Picard, Saint Symphorien D'Ozon (France) | ||
| Assigned to Institut Francais du Petrole, Rueil Malmaison Cedex (France) | ||
| Appl. No. 10/503,807 PCT Filed Jan. 22, 2003, PCT No. PCT/FR03/00203 § 371(c)(1), (2), (4) Date Jun. 13, 2005, PCT Pub. No. WO03/066778, PCT Pub. Date Aug. 14, 2003. |
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| Claims priority of application No. 02 01531 (FR), filed on Feb. 07, 2002. | ||
| Prior Publication US 2005/0230286 A1, Oct. 20, 2005 | ||
| Int. Cl. C10G 45/02 (2006.01) | ||
| U.S. Cl. 208—208R [208/209; 208/218] | 19 Claims |
| 1. A process for desulfurization of a feedstock containing thiophene and/or thiophenic compounds, said process comprising
the following stages:
e) in alkylation stage (e) introducing said feedstock into alkylation zone E, and alkylating thiophene and/or thiophenic compounds
by at least one olefin,
f) fractionating in a fractionation zone F at least a portion of resultant effluent (fraction η′) from alkylation stage e)
into at least two fractions: a light fraction (λ) low in sulfur and a heavy fraction (μ) that is high in alkyl thiophenes
and in alkyl thiophenic compounds,
g) passing at least a portion of the heavy fraction (μ) obtained from fractionation stage f), to a hydrocracking zone G, to
hydrocrack alkyl-thiophenes and alkyl-thiophenic compounds contained in said fraction,
h) passing of at least a portion of the resultant hydrocracked effluent obtained from hydrocracking zone G, to a hydrotreatment
zone H to recover a hydrocracked fraction low in sulfur.
|