Method for dehydrogenating C 2 -C 30 -alkanes

Details Method for dehydrogenating C 2 -C 30 -alkanes Method for dehydrogenating C 2 -C 30 -alkanes

2006-05-02

2006-05-02

Dang, Thuan D (Department: 1764)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

C585S319000, C585S440000, C585S654000, C585S659000

Reexamination Certificate

active

07038098

ABSTRACT:
C2–C30-alkanes are dehydrogenated in a process in which(i) ethylbenzene is dehydrogenated to styrene in a first part process to give a hydrogen-containing offgas stream, and(ii) one or more C2–C30-alkanes are dehydrogenated in the presence of a heterogeneous catalyst in one or more reaction zones in a second part process to give the corresponding olefins, with a hydrogen-containing gas stream being mixed into the reaction gas mixture of the dehydrogenation in at least one reaction zone,wherein at least part of the hydrogen-containing offgas stream obtained in the dehydrogenation of ethylbenzene is mixed into the reaction gas mixture of the alkane dehydrogenation.

REFERENCES:
patent: 2376532 (1945-05-01), Egloff
patent: 4788371 (1988-11-01), Imai et al.
patent: 5733518 (1998-03-01), Durante et al.
patent: 838 534 (2001-07-01), None
patent: 96/33150 (1996-10-01), None
patent: 96/33151 (1996-10-01), None
patent: 01/56960 (2001-08-01), None

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