Stabilization of aqueous acidic scrubbing liquors
AssigneeBASF SE
InventorsGuenter Herrmann, Ekhart Lucas
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Abstract
Aqueous acidic scrubbing liquors obtained when oxidation mixtures from the oxidation of cyclohexane are scrubbed with water are stabilized by a process in which the scrubbing liquors are heated at from 50.degree. to 130.degree. C. in the presence of a water-soluble vanadium compound.
Claims4
A process for stabilizing an aqueous acidic scrubbing liquor resulting from the oxidation of cyclohexane with molecular oxygen or with a gas containing molecular oxygen in the liquid phase at from 130.degree. to 200.degree. C. and under a pressure from 5 to 25 bar and scrubbing the oxidation mixture thus obtained with water and separation of an aqueous acidic scrubbing liquor so as to prevent the formation of hydrogen-containing gases, which process comprises adding a water-soluble vanadium compound to the scrubbing liquour and heating the scrubbing liquor to a temperature from about 50.degree. to 130.degree. C.
Dependencies are inferred from the claim text.