WET TORREFACTION OF MISCANTHUS – CHARACTERIZATION OF HYDROCHARS IN VIEW OF HANDLING, STORAGE AND COMBUSTION PROPERTIES
Mateusz Wnukowski 1  
,  
Paweł Owczarek 2  
,  
 
 
More details
Hide details
1
Department of Boilers, Combustion and Energy Processes, Faculty of Mechanical Engineering, Technical Univer-sity of Wroclaw, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
2
University of Twente, Drienerlolaan 5, 7522 NB Enschede, Netherlands
3
University of Leeds, Leeds LS2 9JT, United Kingdom
Publication date: 2015-06-16
 
J. Ecol. Eng. 2015; 16(3):161–167
KEYWORDS
ABSTRACT
Properties of miscanthus hydrochars obtained through wet torrefaction were studied. The process was carried out in three different temperatures – 180, 200 and 220 °C and with four different ratios of water to biomass – 3:1, 6:1, 12:1 and 16:1. The obtained solid products were characterized with respect to their fuel properties. The best results were obtained for the temperature of 220 °C and showed a noticeable improvement in fuel properties – especially grindability and lowered ash content. The influence of water to biomass ratio was not so explicit and while high ratio showed an improvement in all mentioned properties, low ratio allowed to achieve the highest energy yield. The results obtained for miscanthus wet torrefaction and the literature data for dry torrefaction were compared.