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The devolatilization and char combustion behavior of five biofuels were tested using the Isothermal Plug Flow Reactor. The tested biomasses are: Black Pellet, Danish Straw, Lignin, Palm Kernel Shell and Softwood Pellet.
This document contains the results of the characterization of biomass materials performed by IFRF in collaboration with University of Pisa and ENEL Laboratories. The tested biofuels, coming from Polish company Remak Rozruch, include a virgin biomass (Black Pellets) and the torrefied products of PKS (Palm Kernel Shell), processed to achieve three levels of torrefaction (10%, 20%, 30% of the volatile matter content).
The tests include fundamental (proximate and ultimate) and additional (heating value, physical properties, morphology) analyses performed in the above laboratories, as well as the advanced tests of devolatilization and char oxidation in the Isothermal Plug Flow Reactor (IPFR) at the IFRF research center.
This report gives an overall description of the Isothermal Plug Flow Reactor and of the applied experimental procedures, from the required preliminary actions, to the IPFR operation and experimental matrices, and the post-processing operations. The results of the lignin characterization are then shown, with a particular attention to the conversion trends versus residence time.
The aim of this work is to define the experimental procedures for testing solid fuels in the IFRF’s Isothermal Plug Flow Reactor (IPFR), which is an advanced tool for combustion related studies, and extrapolate the prerequisites and principles that could be in common with other advanced equipment. The aim is to provide qualified data for quantitative prediction of operational/design parameters of industrial-scale combustion systems through Computational Fluid Dynamics simulations. Uniform and reliable data will be also inserted into the IFRF online Solid Fuel Database (SFDB).