The utilisation of SCR catalytic converters (selective catalytic reduction) is imperative in numerous areas to ensure compliance with stringent emission regulations. In the future, the prospect of achieving a clean and CO2-neutral utilisation of biomass in combined heat and power plants (CHP) is conceivable. 

In the context of exhaust gas aftertreatment, the injection of urea solution into hot exhaust gas is being investigated at the ITV. The focus here is on the complex relationships between geometric and physical boundary conditions that influence the distribution of the urea solution and the subsequently released ammonia. As these boundary conditions differ for the various areas of application (automotive, power plant, shipping), it is necessary to analyse the processes taking place. The knowledge gained will help to further optimise existing processes and improve their sustainability.