<p>A flare stack for combustion of combustible fluids as subject of the invention comprises a gas feed pipe and at least one burner element for combustion of the combustible fluids. The burner element comprises a gas inlet being adapted to receive combustible gas from the gas feed pipe. The flare stack is characterized in that the gas inlet of each of the burner elements comprises a venturi and a gas injector nozzle for each of these venturis. The nozzle is aligned with the venturi for drafting primary combustion air with the combustible gas when injected by the nozzle in the venturi.</p>
