Co-gasification of biomass, waste and coal in under fluidized bed conditions

A large amount of biomass and other waste are in Austria and the South-East Europe Countries as well, and they are becoming interesting in energy production. Therefore, it is nedeed to find the most suitable methods for rational utilization of these alternative fuels. As one of the most promising technologies for investigations in this work co- gasification of non-fossil fuels with coal in fluidized bed will be investigated. Under fluidized bed conditions the fuel particles are in the matrix of inert particles (sand, ash and sulfur sorbent). The mass fraction of fuel is around 1-2%. Under such conditions, each active (fuel) particle is surrounded by number inert particles. Topic of this study will be the single active particle behaviour during different stages of gasification process, such as heat and mass transfer, drying, pyrolysis, char gasification, chemical reactions. The main goal of this work is to get new scientific results in the very complex area of co-gasification of biomass, waste and coal in fluidized bed. The very complex phenomena that occur during process co-gasification will be analyzed. Also, the results will enable an economic improvement in the economical use of bio-fuels. Therefore, numerous theoretical and experimental investigations will be performed. The experimental investigations, in different experimental units at Vienna University of Technology will be performed. The optimal working conditions for different types of biomass, waste and coal, such as reactor temperature, sizes of active particles and content of coal, biomass or waste in the blends, amount of steam, content of pollutants etc, will be recommended. The results of these investigations would be some improvements of the co-gasification process. The obtained results could find a practical applications in the existing industrial fluidized bed reactors that might be used for co- gasification with very small modifications as well. These results might be published through the papers in International Journals and presented at Conferences.