The overall goal of the project is to optimize the combustion properties of biofuel mixtures, which are made up of a wide variety of biogenic residues and waste materials. On the basis of sintering experiments and the technical application of a biofuel catalogue developed by the applicants, optimized biofuel mixtures are defined by laboratory and pilot plant tests before they are used on a large scale in biomass heat and power plants. The effect and efficiency of the optimization measures will be evaluated with the aim of reducing the formation of slag in the combustion chamber and the formation of deposits in the convective boiler area.

In the project, EGG will focus on characterizing the mineralogy and geochemistry of slags, deposits and ashes from biomass heat and power plants as a function of temperature and biofuel. The formation paths and conditions of critical phases are worked out and described thermodynamically. Furthermore, the processes and efficiency of additives to minimize the amount of residues for selected test conditions are examined. Finally, the extent to which the various solids can be landfilled or reused in some other way is worked.