A gas-air mixing unit - manufactured in an additive process - promises a reduction of the nitrogen oxide value by a factor of ten below the maximum permitted limit value. And all this without any further catalytic reductions in the combustion process. This is how the component works.
The physical basis of combustion is that the cleaner the combustion of two gases is, the fewer foreign residues there are. This is exactly where Kueppers Solutions, in cooperation with RWTH Aachen University, comes in. The company from Gelsenkirchen is developing a gas-air mixer which ensures that almost no NOx residues occur compared to normal burners. Through a special feed of the gases to be burned, a clean air flow is created. This burns at maximum efficiency on the one hand and ensures uniform heating in the furnace on the other.
The component primarily mixes the fuel gas and oxygen in a star pattern, which then distributes the gases evenly over the largest possible space. A further, angled metal disc additionally swirls the mixture in order to achieve an optimum level of efficiency.
Furthermore, the system uses combustion air, which can be preheated in advance with the exhaust gas by means of a heat exchanger. This increases the overall efficiency; however, more nitrogen oxides will be emitted.