A Method for Modelling the Co-Combustion of Solid Recovered Fuels in Pulverised Fuel Power Plants

摘要

In this study an approach for modelling co-combustion of SRF in pulverized-coal furnaces by means of numerical simulation is proposed. Therefore, the highly inhomogeneous fuel SRF was analysed and step-wise reduced to its main components, biomass and plastic. New reaction paths for biomass and plastics have been modelled and implemented into the Lagrangian particle model of the CFD-code AIOLOS. For the purpose of adapting parameters of the combustion models for biomass and plastics and the evaluation of the co-combustion model, semi-technical combustion experiments were carried out and compared to model predictions. The simulation results showed an overall good agreement of main product species like O_2 and CO_2 with the measurements so that in a next step SRF co- was applied to a 600 MW_(el) utility boiler.