Patent ID: 7063795

Claim:
Process for starting up a system intended for the oxidation of organic bodies present in an aqueous effluent, said system comprising a tubular body ( 10 ) into the inlet ( 12 ) of which said aqueous effluent can be injected at a pressure P 1 corresponding to at least the critical pressure of said aqueous effluent, said tubular body ( 10 ) having a first zone ( 16 ) extending said inlet ( 12 ), a second zone ( 18 ) into which an oxidising composition can be injected, and an outlet ( 14 ), said process comprising the steps of: providing to said first zone ( 16 ) of said tubular body ( 10 ), a first quantity of thermal energy Q 1 , which is capable of raising the temperature of said aqueous effluent passing through said tubular body ( 10 ) from an initial temperature to a higher intermediate temperature T 1 , which is below a temperature at which said organic bodies oxidize and providing a definite quantity of a combustible mixture which is capable of reacting at a temperature lower than an oxidation temperature of the organic bodies and of which at least a first part can react at said intermediate temperature T 1 to provide a second quantity of thermal energy Q 2 raising the temperature of said aqueous effluent to a reaction temperature T 2 and is injected into said tubular body ( 10 ) at said pressure P 1 between said inlet ( 12 ) and said zone ( 16 ) of said tubular body ( 10 ) in such a way that injection of said oxidising composition into said second zone ( 18 ) brings about reaction of at least a second part of said combustible mixture providing a third quantity of energy Q 3 at said outlet ( 14 ) from said tubular body ( 10 ), a fraction of said third quantity of energy Q 3 being applied to said first zone ( 16 ) of said tubular body ( 10 ) to raise the temperature of the aqueous effluent passing through it at least from said initial temperature to said intermediate temperature T 1 .