Alkylation by controlling olefin ratios

Details Alkylation by controlling olefin ratios Alkylation by controlling olefin ratios

1997-08-15

1998-11-24

Wood, Elizabeth D.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

Same catalyst, solvent, or component thereof used in both...

585312, 585331, 585709, 585716, 585721, 585723, C07C 200, C07C 254, C07C 258, C07C 262

Patent

active

058410147

ABSTRACT:
Disclosed are various embodiments for alkylating olefins and isoparaffins in the presence of an acid to reduce and/or control acid consumption or maximize and/or control the octane number of the produced alkylate product. One embodiment includes alkylation by controlling the C.sub.3 /C.sub.5 olefin ratio to reduce acid consumption. Another embodiment includes alkylation of C.sub.3 and C.sub.5 olefins in separate alkylation zones to maximize alkylate octane number. Even another embodiment includes propylene alkylation followed by C.sub.4 and/or C.sub.5 olefin alkylation, with the spent propylene acid used in the C.sub.4 and/or C.sub.5 olefin alkylation. Still another embodiment includes alkylation of C.sub.3, C.sub.4 and C.sub.5 olefins in separate alkylation zones, with the spent propylene acid used in the C.sub.4 alkylation, and the spent butylene acid used in the C.sub.5 alkylation. Yet another embodiment includes alkylation by controlling the C.sub.3 /C.sub.4 olefin ratio to maximize the octane number of the produced alkylate.

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