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Characteristics of wood pellets mixed with torrefied rice straw as a biomass fuel

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Title: Characteristics of wood pellets mixed with torrefied rice straw as a biomass fuel
Authors: Kizuka, Ryosuke Browse this author
Ishii, Kazuei Browse this author →KAKEN DB
Sato, Masahiro Browse this author
Fujiyama, Atsushi Browse this author
Keywords: Agriculture biomass
Wood pellets mixed with torrefied rice straw
Clinker production
Issue Date: Sep-2019
Publisher: Springer
Journal Title: International journal of energy and environmental engineering
Volume: 10
Issue: 3
Start Page: 357
End Page: 365
Publisher DOI: 10.1007/s40095-019-0305-0
Abstract: Utilization of rice straw as an alternative fuel source to fossil fuel has been considered. However, properties such as water content, low heating value, less grindability, high bulk density, and high ash content are problems in such a biomass fuel supply chain. This study attempted to produce wood pellets mixed with torrefied rice straw (WPTRS) to solve the problems related to using rice straw as fuel. For that, preferred torrefaction conditions, such as torrefaction temperature and holding time, were determined by indicators of the grindability, energy loss, and heating value. As a result, the preferred grindability was found at torrefaction temperatures of over 220 degrees C. In terms of energy, we derived two viewpoints: i.e., if minimum energy loss is prioritized, the preferred torrefaction temperature is 220 degrees C, and for an increase in the heating value of rice straw, 280 degrees C was preferred. Next, WPTRS was produced using rice straw torrefied at 220 degrees C and 280 degrees C, and by changing the mixing ratio of rice straw to wood. Burning tests were conducted to clarify the WPTRS characteristics and the results revealed that the torrefaction at a temperature of 280 degrees C increased WPTRS's heating value. In addition, the basicity can be used as a good indicator for clinker production when wood and rice straw are used as fuel.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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