PRODUCTION OF PARTICLES SUITABLE FOR THE BTL CHAIN: EFFECT OF TORREFACTION INTENSITY ON THE GRINDABILITY OF HEAT TREATED LIGNOCELLULOSIC BIOMASS

摘要

In order to face the fossil fuel crisis and the global warming, biofuels are developed worldwide sincethe few last decades. Due to many disadvantages of the first generation biofuel, a second generation is developed,whose major advantage is to use the lignocellulosic part of plants. One possible BtL (biomass to liquid) chainincludes a gasification followed by a Fisher-Tropsch synthesis. In this process, a pre-treatment is needed to improvebiomass grindability since fine particles with low aspect ratio are required to supply the gasifier. Mild pyrolysis(temperature level below 300℃) allows a good compromise between grindability and loss of energy content to beobtained. This present work proposes a mechanical characterization (grindability analysis) of wood (Fagus silvatica)treated with different extents of treatment. An original impact device was used for this characterization.