Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1995-11-03
1999-02-02
Yildirim, Bekir L.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208 66, 208134, 208138, 585319, 585322, 585486, 585489, C10G 3506, C07C 418
Patent
active
058659862
ABSTRACT:
This is a process for upgrading a petroleum naphtha fraction. The naphtha is subjected to reforming and the reformate is cascaded to a benzene and toluene synthesis zone over a benzene and toluene synthesis catalyst comprising a molecular sieve of low acid activity. The preferred molecular sieve is steamed ZSM-5. The benzene and toluene synthesis zone is operated under conditions compatible with the conditions of the reformer such as pressures of above about 50 psig (446 kPa) and temperatures above about 800.degree. F. (427.degree. C). In one aspect of the invention, the benzene and toluene synthesis catalyst includes a metal hydrogenation component such as cobalt, nickel, platinum or palladium. In one mode of operation, the benzene and toluene synthesis catalyst replaces at least a portion of the catalyst of the reformer. The process produces a product containing an increased proportion of benzene and toluene, and a reduced proportion of C8 aromatics, particularly ethylbenzenes, as compared to the reformate.
REFERENCES:
patent: 3395094 (1968-07-01), Weisz
patent: 4078990 (1978-03-01), Brennan et al.
patent: 4157355 (1979-06-01), Addison
patent: 4211886 (1980-07-01), Tabak et al.
patent: 4341622 (1982-07-01), Tabak et al.
patent: 4351979 (1982-09-01), Chester et al.
patent: 5082984 (1992-01-01), Brown et al.
patent: 5376259 (1994-12-01), Kline et al.
patent: 5396010 (1995-03-01), Harandi et al.
patent: 5472593 (1995-12-01), Gosling et al.
patent: 5792338 (1998-08-01), Gosling et al.
Buchanan John Scott
Cheng Jane C.
Freyman David G.
Haag Werner Otto
Harandi Mohsen N.
Keen Malcolm D.
Mobil Oil Corporation
Prater Penny L.
Yildirim Bekir L.
LandOfFree
Hydrocarbon conversion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrocarbon conversion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrocarbon conversion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1113696