Versatile grinder technology for the production of wood biofuels
2020
Fiorineschi, Lorenzo | Cascini, Gaetano | Rotini, Federico | Tonarelli, Alessandro
The exploitation of wood biomass for thermal energy production often represents an effective complementary source to petroleum, especially where there is the availability of extended forests. Focusing the attention on household plants, the wood pellet currently constitutes a widespread biofuel, which however is characterized by non-negligible production costs. Wood microchips constitute a recently developed alternative, which compensates its inferior characteristics by an easier production process. To obtain these biofuels, the particle size reduction is crucial, because it sensibly influences the power consumption of the drying processes, as well as the raw material supply strategies. In this context, this paper presents an innovative grinding technology, which can be exploited to produce wood particle sizes for both wood pellets and microchips production. In particular, the prototype of the grinder and the experimental plant are shown, which have been used for performing preliminary biofuel production tests. The main design characteristics of the prototype are provided, together with preliminary experimental results that provide first evidences about the potentialities of the proposed wood grinding technology.
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