Basic ionic liquids as hydrochloric acid scavengers in refinery crude processing

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United States of America Patent

PATENT NO 10822547
APP PUB NO 20190177622A1
SERIAL NO

15839072

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Abstract

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Treatment of crude oil with basic ionic liquids (ILs), results in scavenging of any hydrochloric acid (HCl) that is present to remove the HCl. The IL is a quaternary ammonium compound having the formula R4N+X− or R3N+R′N+R3, where R is independently an alkyl group, an alkylbenzyl group, a hydroxyalkyl group, or a hydroxyalkylbenzyl group, and R is straight or branched and has 1-22 carbon atoms, R′ is a straight or branched alkylene or oxyalkylene having 1 to 10 carbon atoms, and where X− is selected from the group consisting of hydroxide, carbonate, alkylcarbonate, bicarbonate or alkoxide, where the alkyl group of the alkyl-carbonate or alkoxide, if present, is straight or branched and has 1 to 8 carbon atoms. The ILs are introduced into the crude oil after the refinery desalters and before the crude distillation tower to prevent or inhibit HCl from distilling to the crude tower overhead.

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Patent Owner(s)

Patent OwnerAddress
BAKER HUGHES HOLDINGS LLC17021 ALDINE WESTFIELD ROAD HOUSTON TX 77073

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Weers, Jerry J Richmond, US 86 666

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