A crude oil organic chlorine removal agent and a preparation method thereof

Abstract

The application relates to the technical field of petroleum processing, and discloses a crude oil organic chlorine removal agent and a preparation method thereof. The modified imidazole, thiol-modified cyclodextrin and triaz-12 crown ether-4 are added into toluene, and stirring is carried out to obtain the crude oil organic chlorine removal agent. The tertiary amine in the modified imidazole and the thiol-modified cyclodextrin improves the substitution degree, further reacts with the organic chlorine to form a quaternary ammonium salt, and good removal effect is achieved. The imidazole groups also have the tertiary amine and the thiol in the thiol-modified cyclodextrin, which cooperatively remove chlorine. The cyclodextrin is a compound with a unique structure, is in a hydrophobic round table shape inside, and is in an external hydrophilic state. The special structure enables the cyclodextrin to form a host-guest inclusion with the organic chlorine through an inner cavity, and removes the organic chlorine through adsorption.