Emission studies from combustion of empty fruit bunch pellets in a fluidized bed combustor

International Research and Innovation Summit 2017

Othaman, Muhamad Fazli^1 ; Sabudin, Sulastri^1 ; Batcha, Mohd Faizal Mohideen^1

Faculty of Mechanical and Manufacturing Engineering, University Tun Hussien Onn Malaysia, Malaysia^1

关键词: Biomass combustion;    Combustion efficiencies;    Combustion experiments;    Combustion temperatures;    Emission characteristics;    Empty fruit bunches;    Swirling fluidized bed combustors;    Unburnt carbon;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/226/1/012003/pdf
DOI  :  10.1088/1757-899X/226/1/012003

来源: IOP

【 摘 要 】

Malaysia is producing a very large amount of biomass annually from milling activities of oil palm. This biomass is currently being used efficiently in many ways including as fuel for boilers together with fossil fuels. This paper reports the emission characteristics from biomass combustion in a swirling fluidized bed combustor (SFBC). Pelletized empty fruit bunch (PEFB), one of largest biomass produced from oil palm industries were used as fuel in the present study. Combustion experiments were conducted with several quantitiesof excess air: 20%, 40%, 60% and 80% for a constant fuel feedrate of 30kg/hr. The effect of excess air was investigated for three major emissions gaseous namely CO, CO2and NOx. Fly ash produced from the combustion was also analysed to find the contents of unburnt carbon and other impurities. From the results, it was found that the emission of CO decreased from 64 ppm to 40 ppm while the amount of CO2increased slightly with the increasing of excess air from 20% to 80%. The NOxemission also increased from 290 ppm to 350 ppm because of N2in the EA reacts with O2due to high combustion temperature. The combustion efficiencies of about 99% obtained in the present study, showing the prospects of using SFBC in commercial scale.