Mineral oils: processes and products – Chemical conversion of hydrocarbons – With subsequent treatment of products
Patent
1997-05-23
1999-02-02
Griffin, Walter D.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With subsequent treatment of products
208 62, 208134, 208135, C10G 6908
Patent
active
058659870
ABSTRACT:
Low sulfur gasoline is produced from an olefinic, cracked, sulfur-containing naphtha by treatment over an acidic catalyst, preferably an intermediate pore size zeolite such as ZSM-5 to crack low octane paraffins and olefins under mild conditions with limited aromatization of olefins and naphthenes. A benzene-rich co-feed is co-processed with the naphtha to reduce the benzene levels in the co-feed by alkylation. This initial processing step is followed by hydrodesulfurization over a hydrotreating catalyst such as CoMo on alumina. In addition to reducing benzene levels in the combined feeds, the initial treatment over the acidic catalyst removes the olefins which would otherwise be saturated in the hydrodesulfurization, consuming hydrogen and lowering product octane, and converts them to compounds which make a positive contribution to octane. Overall liquid yield is high, typically at least 90 percent or higher. Product aromatics are typically increased by no more than 25 weight percent relative to the combined feeds and may be lower than the feed.
REFERENCES:
patent: 3957625 (1976-05-01), Orkin
patent: 4827069 (1989-05-01), Kushnerick et al.
patent: 4950387 (1990-08-01), Harandi et al.
patent: 4992607 (1991-02-01), Harandi et al.
patent: 5143596 (1992-09-01), Maxwell et al.
patent: 5346609 (1994-09-01), Fletcher et al.
patent: 5347061 (1994-09-01), Harandi et al.
patent: 5391288 (1995-02-01), Collins et al.
patent: 5409596 (1995-04-01), Fletcher et al.
patent: 5414172 (1995-05-01), Chin et al.
patent: 5491270 (1996-02-01), Chin et al.
Borghard William S.
Collins Nick A.
Durand Paul P.
Hilbert Timothy L.
Trewella Jeffrey C.
Griffin Walter D.
Keen Malcolm D.
Prater Penny L.
LandOfFree
Benzene conversion in an improved gasoline upgrading process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Benzene conversion in an improved gasoline upgrading process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Benzene conversion in an improved gasoline upgrading process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1113703