Das Projekt "Verbesserte Energieerzeugung auf Grundlage von Biomasse-Wirbelschichtverfahren mit minimalen Emissionen" wird vom Umweltbundesamt gefördert und von Fraunhofer-Institut für Materialfluss und Logistik durchgeführt. General Information/Project Objectives: The overall objective is to investigate how to obtain reliable and environmental favourable commercial operation in biomass based FBC systems. The expected results shall based on experimental findings stipulate recommendations how to repress agglomeration and defluidisation in fluidised bed combustion systems based on experimental findings indicate how to utilize primary measures to minimize or to hold back the formation of nitrogen oxide compounds in the fluidised bed reactor based on case studies identify optimal logistic strategies in utilizing biofuels in commercial heat and power production. Technical Approach: A first phase of the project will map a selection of biofuels concerning the thermochemical performance in oxidative atmosphere, separately and in combination with suitable bed materials. Fuels to be considered are straw, MBM (meat and bone meal), Miscanthus, Reed Canary grass, willow and forest fuels. The selection is based on availability but is aimed to reflect medium to high alkali rich biomass fuels, i.e. 10 -20 per cent-wt (ash basis) total alkali, and their influences on agglomeration. Lab scale experiments via test rig to commercial scale (I 10MW) experimental investigations will be carried out. Secondly, the programme aims to study the promotion of the N2O reduction reactions in initial stages and subsequently the reduction of NO through catalytic adsorption on solid reductants. The work will proceed through the construction of a 3D-CFD code to be converted into a 'post-processor' implemented on the NO reduction chemistry. In subsequent experimental work, the relative importance of various competing mechanisms will be established in relation to the thermochemical performance of the previously selected fuels, bed materials and operating conditions. To assess the utilization in a logistic sense, the most promising fuels of the experimental study will be mapped considering existing logistic management, suitable means for transport and handling resulting in optimum logistic concepts for FBC. The ideal number, possible location of FBC plants and the assignment of feedstock source will moreover be determined and documented concentrating on Scandinavia, Great Britain and on mainland Europe. As a conclusive achievement, a handbook will be produced for commercial utilization in FBC systems of the selected biofuels. The combined results from all the work packages be put together into a clear-cut manual Expected Achievements and Exploitation: The expected results from the project work will contribute to increase fuel flexibility of existing and future FBC systems allowing for a broader palette of fuels to be fired without essential technical modifications. A higher technical availability of the plants is expected. In addition, lower operational costs are anticipated due to increased competitiveness of the plant owner on the fuel market. Prime Contractor: TPS Termiska Processer AB; Nykoeping.