Multi-stage process for treating N-paraffins

Details Multi-stage process for treating N-paraffins Multi-stage process for treating N-paraffins

1997-12-02

1999-05-25

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

Including alkylation to produce branched-chain paraffin

585331, C07C 258

Patent

active

059070722

ABSTRACT:
A multi-stage process for treating n-paraffin feed is provided, including the steps of: (a) providing an n-paraffin feed; (b) contacting the n-paraffin feed with a dehydroisomerization catalyst under dehydroisomerization conditions so as to provide a dehydroisomerization product stream comprising n-paraffin, iso-paraffin, olefin and iso-olefin fractions; (c) mixing at least the iso-olefin fraction from the dehydroisomerization product stream with an alkyl alcohol to provide an etherification reaction feed; (d) contacting the etherification reaction feed with an etherification catalyst under etherification conditions so as to provide an etherification product stream comprising alkyl tert alkyl ether, n-paraffin, iso-paraffin and olefin fractions. (e) contacting an alkylation reaction feedstock comprising at least the iso-paraffin and olefin fractions from the etherification product stream with an alkylation catalyst under alkylation conditions so as to provide an alkylation product stream comprising alkylate and n-paraffin fractions; and (f) adding the n-paraffin fraction of the alkylation product stream to the n-paraffin feed of step (a).

REFERENCES:
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patent: 5416052 (1995-05-01), De Agudelo et al.
patent: 5523272 (1996-06-01), Ramirez De Agudelo et al.
patent: 5672795 (1997-09-01), Vora et al.

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