the invention concerns an injector for the use in particular for combustion of corrosive products or a mixture thereof . said injector comprises a flush cut tube housing , closed at one end , wherein are juxtaposed at least two flush cut tubes , and not more than eight tubes , said tubes perpendicularly passing through the wall , and at least one lateral branch pipe . the invention also concerns the use of said injector for implementing a method for the combustion of chlorine - containing corrosive products or a mixture thereof .