Pyrolysis behavior of hydrochar from hydrothermal carbonization of pinewood sawdust
作者： Jiawe Li , Peitao Zhao , Tian Li , Meng Lei , Weijie Yan
DOI: 10.1016/J.JAAP.2020.104771
关键词:
摘要: Abstract This work intends to reveal the pyrolysis behavior of hydrochar from hydrothermal carbonization (HTC) pinewood sawdust. The elemental analysis and test were performed study effect HTC on performance. indicates that fuel properties could be highly upgraded by process. Compared with raw biomass (48.10 % 19.12 MJ/kg), carbon content heating value was improved 69.05 26.66 MJ/kg for HTC-260. atomic ratios H/C O/C decreased 1.31 0.90 0.72 0.26, respectively, means dehydration decarboxylation in implies thermal stability hydrochars has been HTC. decomposition temperature pyrochar yields became higher temperature. For HTC-260, yield increased 24.4%–53.02% at a 800 oC. According TGA-FTIR, main gas products CO2, CO, CH4, H2O. Higher promoted more CH4 production due devolatilization, decarboxylation, polymerization occurred 240–260 °C considered as good option maximize energy efficiency when taking pretreatment procedure over drying or torrefaction. All these results indicate is promising upgrade high-moist multi-value-added products.
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