Translation of "Swirl burner" in German

Flame reactors employed frequently have a swirl burner or a burner block with subsequent combustion chamber.

This takes account of the particular features of the swirl flow field of a swirl-stabilized burner.

The further the swirl generator is recessed, the smaller the swirl at the burner outlet.

The particular object here is that the swirl burner can be adapted to different mass flows and also different fuels and/ or gases to be burned.

An apparatus as defined by claim 1, in which said pilot burner (16; 116; 216; 316) is embodied as a swirl burner with a tangential delivery of fuel and/or air.

In order to also realize spraying of the fuel droplets into the outer regions of the burner, swirl nozzles having large jet angles are often used.

In a burner swirl generator consisting of a premix section consisting of a plurality of shells, as disclosed, for example, by EP-B1-0 321 809, the wake zones along the lee side of the corresponding shell or respectively the guide blades of a correspondingly conceived swirl generator are readily suitable as the injection position for the fuel.

Since the maximum and minimum stress of the combustion chamber wall are shifted in the circumferential direction by the burner swirl, it can be advantageous if the variation of the starter film thickness is correspondingly shifted in this direction.

The fuel is introduced to this gasifier by means of a dense phase pneumatic conveying system via a swirl burner and is gasified with air preheated to 500 °C at temperatures of up to 1,300 °C.

The ash of the pulverized fuel melted in the flame reaction is thrown against the wall of the reaction chamber 30 as a result of the swirl of the burner 28 and runs there, as liquid slag, onto a layer of solid slag, which in the present example has formed on the fireproof material of the reaction chamber 30 due to the cooling unit 31 and, at the outlet of the reaction chamber 30, drops through the quenching chamber 33 in the slag bath 37, wherein it solidifies to form vitreous granules.

The pressure difference over the tile is partly reduced by the burner swirl to such an extent that the effusion holes are no longer effectively flown or, even worse, hot-gas ingress into the impingement-cooling chamber of the tile may occur.

Recent thoughts on burner design tend toward replacing a customary diffusion burner normally used in the gas turbine or a swirl-stabilized premix burner with a catalytic combustion system.

The internal space 122 of the swirl generator has substantially the shape of a conical frustum (frustocone), widening from an upstream to a downstream end of the swirl generator or burner.

It involves a swirl burner, which is supplied with a pre-mixed fuel gas/air mixture 1 via a burner pipe 2.

Monitoring the interaction between flow field and flame in a swirl burner having typical design features of a gas turbine combustor.

The invention is based on the general notion of using, for acting with a swirl upon the burner flow, a radial swirl generator, that is to say a swirl generator through which the flow passes radially and which at the same time generates a swirl flow emerging axially.

This applies above all, but not only, to swirl-stabilized premixing burners.

Conventional swirl-stabilized premix burners suitable for machines intermix the fuel with the combustion air only just before the flame zone.

The high turbulence in the swirling burner gases brings the combustible waste constituents in contact with the required combustion air, thus ensuring complete combustion.

In the case of swirl-stabilized burners (for example burners of the double cone type), in which flame stabilization is achieved with the aid of a swirl flow, the region between the swirl generator and the recirculation zone, which occurs due to the swirl flow bursting open, is suitable for mixing in and evaporating the liquid fuel.