Apparatus for minimizing bypass in ammonia oxidation burners of industrial plants with burner diameters of 2-7 m in natural- or forced-circulation boilers

A system of a burner basket for ammonia oxidation burners for commercial-scale plants with burner diameters of 2-7 m in a natural or forced circulation boiler, the system being suited to minimize gas slip and to minimize surface corrugation of media contained in the burner basket as well as to minimize loss of media contained in the burner basket,

• with the burner basket being provided with a wall which is fixed to the ammonia oxidation burner, and the burner basket being provided with a gas-permeable bottom plate arranged on top of internal components of the natural or forced circulation boiler, the wall and the gas-permeable bottom plate not being connected mechanically, and the wall of the burner basket being tapered conically towards the bottom plate at an angle of 5-20° to the perpendicular and a circumferential gap in the range of 5 to 10 mm being produced between the wall and the gas-permeable bottom plate under all operating conditions of the ammonia oxidation burner.