Patent ID: 9073769
Filing Date: 2015-07-07
Classification: B01J,C02F

Abstract:
1. A process for hydrothermal oxidation of organic compounds contained in an aqueous effluent, optionally with oxidizable inorganic compounds, wherein said aqueous effluent is injected within a tubular reactor wherein the effluent is brought to a supercritical pressure and wherein the temperature of the effluent is gradually increased from its initial temperature up to a supercritical temperature, designated by T final , without any intermediate decrease in temperature during the increasing time-dependent change up to T final , by introducing within said tubular reactor a sufficient amount of oxidizing agent for totally oxidizing the organic compounds and optionally for at least partly oxidizing oxidizable inorganic compounds, the oxidizing agent being introduced in a fractionated way into several points increasingly located downstream from the reactor, characterized in that the composition and/or the concentration of the organic compounds and/or oxidizable inorganic compounds within the effluent to be treated varies over time, and in that, upstream from the tubular reactor wherein oxidation is carried out, the TOD of the effluent to be treated is measured and maintained or adjusted if required, to a value of more than 120 g/L and of less than 250 g/L prior to its injection into the tubular reactor.