Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2007-11-15
2011-11-29
Griffin, Walter (Department: 1774)
Mineral oils: processes and products
Refining
Sulfur removal
C208S213000, C208S244000
Reexamination Certificate
active
08066869
ABSTRACT:
The invention relates to a treatment process of a sulphur-containing hydrocarbon fraction, comprising the following steps:a) a hydrodesulphurization step of said hydrocarbon fraction to produce a sulphur-depleted effluent, consisting of passing the hydrocarbon fraction mixed with hydrogen over at least one hydrodesulphurization catalyst.b) a step of separation of the partially desulphurized hydrocarbon fraction from the hydrogen introduced in excess, as well as the H2S formed in step a).c) a step of collecting both mercaptans and thiophenic compounds, consisting of placing the partially desulphurized hydrocarbon fraction originating in step b) in contact with an adsorbent comprising at least one element chosen from the group constituted by the elements of groups VIII, IB, IIB and IVA, the adsorbent being used in reduced form in the absence of hydrogen at a temperature above 40° C., the metal content in the reduced form of the adsorbent being above 25% by weight.
REFERENCES:
patent: 4990242 (1991-02-01), Louie et al.
patent: 5106484 (1992-04-01), Nadler
patent: 5322615 (1994-06-01), Holtermann et al.
patent: 5597476 (1997-01-01), Hearn et al.
patent: 6013598 (2000-01-01), Lapinski et al.
patent: 6228254 (2001-05-01), Jossens
patent: 6231753 (2001-05-01), McKnight et al.
patent: 6579444 (2003-06-01), Feimer et al.
patent: 6596157 (2003-07-01), Gupta et al.
patent: 2004/0044262 (2004-03-01), Yang
patent: 2005/0252831 (2005-11-01), Dysard
patent: 1 098 698 (1968-01-01), None
patent: WO 93/12204 (1993-06-01), None
patent: WO 02/053684 (2002-07-01), None
Debuisschert Quentin
Nicolaos Alexandre
Picard Florent
Pucci Annick
Griffin Walter
IFP Energies Nouvelles
Millen White Zelano & Branigan P.C.
Robinson Renee E
LandOfFree
Process for deep desulphurization of cracking gasolines with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for deep desulphurization of cracking gasolines with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for deep desulphurization of cracking gasolines with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4291266