Numerical analysis of ammonia homogenization for selective catalytic reduction application.

Selective catalytic reduction based on urea water solution as ammonia precursor is a promising method for the NO abatement form exhaust gasses of mobile diesel engine units. It consists of injecting the urea-water solution in the hot flue gas stream and reaction of its products with the NO over the catalyst surface. During this process flue gas enthalpy is used for the urea-water droplet heating and for the evaporation of water content.