Abstract Process for the combustion of organic substances contained in aqueous effluents, wherein the effluent is first introduced into an offgas cooler downstream of a combustion chamber, additional heat being supplied if necessary, the effluent is kept therein at a higher pressure than the pressure prevailing in the combustion chamber and heated to a temperature which is below the boiling temperature at this pressure. The liquid is heated, at at least the critical pressure, to at least the critical temperature and the pressure is released so that partial vaporization takes place. The resultant vapor phase of organic substances is burned in the combustion chamber together with the nonvaporized organic substances at a temperature sufficient for complete combustion of the organic substances.
A process as claimed in claim 1 wherein the aqueous liquid is fed into the combustion chamber while adding an auxiliary fuel.
Claim 2
Dependent Claim
23 words
A process as claimed in claim 1 wherein flashing and partial vaporization of the aqueous effluent is carried out in the burner nozzle.
Claim 3
Dependent Claim
56 words
A process as claimed in claim 1 wherein the aqueous effluent is flashed to an intermediate pressure higher than the combustion chamber pressure and partly vaporized in a zone upstream of the burner nozzle and the resultant vapor phase of organic substances is supplied separately from the liquid phase of organic substances of the combustion chamber.
Claim 4
Dependent Claim
44 words
A process as claimed in claim 1 wherein the vapor phase obtained by flashing the aqueous effluent to a pressure higher than the combustion chamber pressure is supplied to the burner nozzles as auxiliary vapor for atomizing the liquid phase and liquid auxiliary fuel.
Claim 5
Dependent Claim
40 words
A process as claimed in claim 1 wherein the vapor phase obtained by flashing the aqueous effluent to a pressure higher than the combustion chamber pressure is supplied to the burner nozzles as auxiliary vapor for atomizing the liquid phase.
Claim 6
Dependent Claim
40 words
A process as claimed in claim 1 wherein the vapor phase obtained by flashing the aqueous effluent to a pressure higher than the combustion chamber pressure is supplied to the burner nozzles as auxiliary vapor for atomizing liquid auxiliary fuel.
Claim 7
Dependent Claim
46 words
A process as claimed in claim 1 wherein at least some of the vapor phase obtained by flashing the aqueous effluent to a pressure higher than the combustion chamber pressure is mixed with the flue gas in the combustion chamber while by passing the burner nozzles.
Claim 8
Dependent Claim
42 words
A process as claimed in claim 1 wherein liquid auxiliary fuel is mixed with the liquid phase of the aqueous effluent which has been flashed to a pressure higher than the combustion chamber pressure, prior to being fed into the burner nozzle.