화학공학소재연구정보센터
Energy, Vol.149, 438-453, 2018
Mixed modified Fe2O3-WO3 as new fuel borne catalyst (FBC) for biodiesel fuel
In this work, we prepared modified Fe2O3-WO3 particles and used it as a new FBC for biodiesel precombustion treatment. The optimum dosage of FBC, found from the its maximum stability and minimum corrosion property in biodiesel, is tested on the combustion characteristics, emissions, exergy, and economy of a semi-industrial boiler at two energies levels 240 and 280 MJ/h. The findings demonstrate that the use of the prepared tungsten-ferric FBC in biodiesel is economically feasible resulting in 4% and 1.7% reduction in boiler total costs at 240 and 280 MJ/h respectively. The FBC led in on average 5% and 3% increase in boiler thermal efficiency at 240 and 280 MJ/h respectively. The exergy efficiency also increases by 3% at 240 MJ/h. As the new proposed FBC ferric additive is also a strong reductive agent, it does improve the performance of the boiler in terms of emissions. The CO, HC, NO2 emissions level down by almost by 31%, 45% and 7% respectively at the 240 MJ/h. At higher energy level 280 MJ/h, the reductions vary to 44%, 27%, and 8% for CO, HC and NO2 emissions. The NO increases by 7% at 240 MJ/h and a slight reduction 0.05% was observed at 280 MJ/h. (C) 2018 Elsevier Ltd. All rights reserved.