Reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid
AssigneeSolvay SA
InventorsJean-Marie BLAUDE, Benoit GOSSELIN, Alain LAMBERT, Mathias MAREK, Harald KRUEGER, Jan Schostag, Miriam Heyd
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Abstract
The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.
Claims20
A process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid, the process comprising submitting a first fraction comprising oleum, disulfuric acid or concentrated sulfuric acid with a first content of carboxylic acid or at least one derivative thereof to a gas stripping operation in order to obtain a second fraction comprising oleum, disulfuric acid or concentrated sulfuric acid with a second content of carboxylic acid or at least one derivative thereof, wherein the second content of carboxylic acid or at least one derivative thereof in the fraction comprising oleum, disulfuric acid or concentrated sulfuric acid is lower than the first content.
Dependencies are inferred from the claim text.