Simulation verschiedener Feuerungsprinzipien einer Rostfeuerungsanlage

Grate firing systems are frequently used for thermal waste incineration. A satisfying operation mode of the plants depends on the composition of the fuel and the chosen operating parameters. Parameters such as primary or secondary air flow can be adapted to the waste quality, whereas the grate firing system - counter-, centre-, or co-flow - usually is a given design characteristic. Within this study different grate firing systems were investigated numerically, in order to assess the operation conditions on the burn-out of the flue gas. The simulations were carried out for the pilot plant TAMARA, for which the results of the centre-flow case were compared to experimental data. With the developed model parametric studies can be carried out in an efficient way, saving cost and time. In the near future, it will be used as a basis to examine different reaction models.