METHOD FOR OXIDATION WITH HUMID AIR USING REGENERATED CATALYST Russian patent published in 2012 - IPC C02F1/74 C02F1/66 B01J38/48 

FIELD: chemistry.

SUBSTANCE: inventions can be used to decompose pollutants in waste water and process streams of public and industrial pollution sources. To realise the method, an aqueous mixture containing an undesirable component is brought into contact with a soluble copper catalyst and an oxidant at temperature from 240°C to critical temperature and pressure from 30 atm to 275 atm to form an oxidised aqueous mixture, a portion of the catalyst is deposited by adjusting pH of the oxidised aqueous mixture from 6 to 12 in the presence of oxygen at temperature of about 80°C in form of solid copper oxide particles. When recycling the catalyst, pH is controlled in the range from 6 to 12 to dissolve solid copper oxide particles. The apparatus has a wet oxidation unit (206), an aqueous mixture source (202), a copper catalyst source dissolved in the aqueous mixture (224) lying between the aqueous suspension source and the wet oxidation unit, a pH sensor, an oxidised aqueous mixture pH control unit (212), a separator (220) configured to deposit part of the copper catalyst in form of copper oxide and lying on the outlet side of the wet oxidation unit (206) and a line for recirculating the recycled catalyst (224).

EFFECT: inventions provide 95% efficiency of purifying aqueous mixtures from different pollutants which can be decomposed by oxidation and reduce power consumption of the apparatus.

31 cl, 6 dwg, 6 tbl, 5 ex