Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1984-10-01
1985-09-17
Gantz, D. E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208154, 208139, 502241, 585951, C10G 3504, C10G 3509, C10G 3522
Patent
active
045419159
ABSTRACT:
A start-up procedure wherein a halogenated rhenium-containing catalyst, to improve its performance in reforming naphtha feeds, is contacted with water, added with the hydrogen and said feed. During the start-up period, preferably on initiation of the start-up period after aromatics production has begun, a naphtha feed, hydrogen and water are passed cocurrently through the several reactors of a reforming unit and reacted over the halogenated rhenium-containing catalyst. Water is generally added with the naphtha and hydrogen, preferably to the initial reactor of the series of reactors of the reforming unit, in concentration ranging from about 100 vppm of hydrogen to about 10,000 vppm of hydrogen, preferably from about 100 vppm to about 5000 vppm of hydrogen.
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Baird Jr. William C.
Mauldin Charles H.
Caldarola Glenn A.
Exxon Research and Engineering Co.
Gantz D. E.
Proctor Llewellyn A.
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