Patent ID: 9388110
Filing Date: 2016-07-12
CPC Classification: B01J,C07C

Claim Text:
1. A method for oxidizing an aromatic feedstock containing at least one oxidizable aromatic compound, the method comprising: oxidizing in an oxidation reactor the at least one oxidizable aromatic compound of the aromatic feedstock with an oxidation medium comprising a manganate salt in an alkaline medium to form a slurry comprising a liquid component and a solid component, the liquid component containing a carboxylate, the solid component containing manganese dioxide formed by reduction of the manganate salt; separating the liquid component and the solid component in a separation apparatus; transferring the liquid component from the separation apparatus to a product recovery unit; transferring the solid component from the separation apparatus to a solids treatment unit; contacting the solid component in the solids treatment unit with a basic liquid to oxidize the manganese dioxide in the solid component and form a regenerated manganate salt from the manganese dioxide; and recycling at least a portion of the regenerated manganate salt from the solids treatment unit back to the oxidation reactor.