Process for catalytically reforming a hydrocarbonaceous...

Details Process for catalytically reforming a hydrocarbonaceous... Process for catalytically reforming a hydrocarbonaceous...

2003-03-20

2008-09-02

Griffin, Walter D. (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

Reexamination Certificate

active

07419583

ABSTRACT:
A process for catalytically reforming a gasoline boiling range hydrocarbonaceous feedstock in the presence of hydrogen involving the following steps:(a) reforming at least 5 vol % and at most 50 vol % of the feedstock in a first reforming unit having a fixed bed of catalyst particles;(b) passing the effluent stream of the first reforming unit to a separation zone having a separator and a stabilizer to produce a hydrogen-rich gaseous stream, a C4−hydrocarbon stream and a first reformate;(c) reforming the remainder of the feedstock and at least part of the first reformate in a second reforming unit having one or more serially connected reaction zones, each having a moving catalyst bed, which are operated in a continuously catalyst regeneration mode; and,(d) passing the effluent stream of the second reforming unit to a separation zone having a separator and a stabilizer to produce a hydrogen-rich gaseous stream, a C4−hydrocarbon stream and a second reformate.

REFERENCES:
patent: 3753891 (1973-08-01), Graven et al.
patent: 4133841 (1979-01-01), Cosyns et al.
patent: 5196110 (1993-03-01), Swart et al.
patent: 5354451 (1994-10-01), Goldstein et al.
patent: 6179995 (2001-01-01), Cash et al.

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