TORREFACTION OF PALM BIOMASS BRIQUETTES AT DIFFERENT TEMPERATURE

The climate change has driven towards transformation from the high energy dependence on fossil fuel to inexhaustible renewable energy such as solar, wind, mini hydro and biomass. In Malaysia, abundant of palm biomass residues are produced during the processing of fresh fruit bunch. Therefore it is inevitable to harness these bioenergy sources in order to prevent waste accumulation at adjacent to palm mills. In order to utilize such bioenergy sources and to cope with the fast growing demand of energy, combination technique of densification and torrefaction is one of the potential ways to be practised. In the present study, the physical and combustion properties of torrefied empty  fruit bunch (EFB) briquettes were investigated experimentally with constant nitrogen flow rate of 1 l/min , for various torrefaction temperatures (225-300). Before torrefaction process, EFB briquettes were initially produced under controlled condition with compaction pressure of 7 MPa and briquetting temperature of 150. In general, the torrefied EFB briquettes were successfully produced in the present study. The results show that an increase in torrefaction temperature from 225  to 300  causes a significant increase in gross calorific value (from around 17400 kJ/kg to 25000 kJ/kg), fixed carbon content (from 16.2% to 46.2%) and ash content (from 2.4% to 17.2%). On the other hand, relaxed density and volatile matter decrease, from 1017 kg/m 3 to 590 kg/m 3 and from 73.1% to 29.7%, respectively. As a conclusion, the gross calorific value and fixed carbon content are improved due to torrefaction. In addition, it was found that gross calorific value and moisture content of the torrefied EFB briquettes fulfil the requirement for commercial briquette production as stated by DIN51731 (gross calorific value>17500 kJ/kg and moisture content <10%).

[1]  H. Faizal,et al.  CHARACTERISTICS OF BINDERLESS PALM BIOMASS BRIQUETTES WITH VARIOUS PARTICLE SIZES , 2015 .

[2]  Bemgba Bevan Nyakuma,et al.  Torrefaction of Pelletized Oil Palm Empty Fruit Bunches , 2015, 1505.05469.

[3]  Z. Salam,et al.  Malaysia's renewable energy policies and programs with green aspects , 2014 .

[4]  Bemgba Bevan Nyakuma,et al.  Thermogravimetric Analysis of the Fuel Properties of Empty Fruit Bunch Briquettes , 2014 .

[5]  Ronald Zwart,et al.  Opportunities and challenges in the development of a viable Malaysian palm oil biomass industry. , 2013 .

[6]  Hyoung-woo Lee,et al.  Torrefaction of oil palm mesocarp fiber and their effect on pelletizing. , 2013 .

[7]  E. Lois,et al.  Converting Biomass and Waste Plastic to Solid Fuel Briquettes , 2013 .

[8]  M. Aris,et al.  An experimental investigation on the handling and storage properties of biomass fuel briquettes made from oil palm mill residues. , 2012 .

[9]  Haji Hassan Masjuki,et al.  Current energy usage and sustainable energy in Malaysia: A review , 2011 .

[10]  S. Yusup,et al.  Torrefaction of oil palm wastes , 2011 .

[11]  Po Chih Kuo,et al.  Torrefaction and co-torrefaction characterization of hemicellulose, cellulose and lignin as well as , 2011 .

[12]  J. Kers,et al.  DETERMINATION OF PHYSICAL, MECHANICAL AND BURNING CHARACTERISTICS OF POLYMERIC WASTE MATERIAL BRIQUETTES , 2010 .

[13]  Jenny M. Jones,et al.  Torrefaction of reed canary grass, wheat straw and willow to enhance solid fuel qualities and combustion properties , 2008 .

[14]  Y. M. Choo,et al.  Oil Palm Biomass As Potential Substitution Raw Materials For Commercial Biomass Briquettes Production , 2008 .

[15]  L. Xiaowei,et al.  Experimental study on stalk briquette gasification producer gas for vehicle fuel. , 2008 .

[16]  J. Rathbauer,et al.  Particle density determination of pellets and briquettes , 2006 .

[17]  Carlos Alberto Luengo,et al.  Wood briquette torrefaction , 2005 .

[18]  Z. Husain,et al.  Briquetting of palm fibre and shell from the processing of palm nuts to palm oil , 2002 .