Regeneration of acidic ionic liquid without addition of a hydrogenation catalyst

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United States of America Patent

PATENT NO 9956552
SERIAL NO

15010168

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Abstract

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We provide a process for regenerating a spent acidic ionic liquid, comprising contacting the spent acidic ionic liquid with hydrogen and without an addition of a hydrogenation catalyst; wherein a conjunct polymer content is decreased in the spent acidic ionic liquid to produce regenerated acidic ionic liquid. We also provide a process for making an alkylate gasoline blending component, comprising: a) alkylating a mixture of isoparaffins and olefins using an acidic ionic liquid and an alkyl halide or a hydrogen halide, wherein a conjunct polymer accumulates in a spent acidic ionic liquid; and b) feeding the spent acidic ionic liquid and a hydrogen, and without an addition of a hydrogenation catalyst, to a regeneration reactor operated under selected hydrogenation conditions to produce a regenerated acidic ionic liquid that is used for the alkylating, wherein the conjunct polymer in the regenerated acidic ionic liquid is decreased by at least 50 wt %.

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Patent Owner(s)

Patent OwnerAddress
CHEVRON U S A INC6001 BOLLINGER CANYON ROAD SAN RAMON CA 94583

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Bong Kyu Novato, US 10 48
Driver, Michael Sean San Francisco, US 7 22
Girgis, Michael John Richmond, US 16 51
Luo, Huping Richmond, US 55 332
Song, Steven Xugi Albany, US 3 34
Timken, Hye-Kyung Albany, US 44 536

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