TY - JOUR AU - Leonor Romão, Erica AU - Ana Conte, Rosa PY - 2020/11/15 Y2 - 2024/03/28 TI - Energy gains of eucalyptus by torrefaction process JF - Maderas-Cienc Tecnol JA - Maderas-Cienc Tecnol VL - 23 IS - SE - Article DO - 10.4067/s0718-221x2021000100403 UR - https://revistas.ubiobio.cl/index.php/MCT/article/view/4364 SP - 1-6 AB - <p>The aim of this study was to evaluate the changes in the characteristics of <em>Eucalyptus spp</em><em>. </em>from Paraíba Valley region, Sao Paulo - Brazil after torrification process. Torrification is a thermochemical process that occurs at temperatures lower than the pyrolysis process as a pretreatment to improve biomass characteristics for use as biofuel energy in power generation. An experimental study was carried out in a batch reactor at three temperatures (240 °C, 260 °C and 280 °C) with residence time of 30 and 60 minutes. At the indicated operating conditions by elemental analysis, higher heating value and thermogravimetric analysis were evaluated. Result showed that there was a reduction in the oxygen/carbon (O/C) and hydrogen/carbon (H/C) ratios, causing an increase in the thermal energy quality of torrified wood, about of 28 % and 47 % at temperatures of 260 °C with residence time of 60 minutes and 280 °C with 30 minutes, respectively. A thermogravimetric analysis showed that at 260 °C the hemicellulose was almost completely degraded leaving the fuel in better conditions for combustion or gasification processes.</p> ER -