FUEL 12 |
| The effects of nano-titanium oxide dosage, Ca/S molar ratio, temperature on the calcium oxide combustion desulfurization and denitrification efficiencies were studied. The products were characterized by a scanning electron microscope and X-ray diffraction analysis. The effect of nano-titanium oxide on the coal combustion efficiency was investigated using thermogravimetric analyzer. The catalysis mechanisms of nano-titanium oxide on combustion, simultaneous desulfurization and denitrification were discussed. The results show that desulfurization and denitrification efficiencies were 87.8% and 25.7% when nano-titanium oxide dosage is 8%, Ca/S 2, temperature 850°C; they were 13.4% and 8.6% higher than that without nano-titanium oxide addition, respectively. The ignition temperature of lignite decreased 17°C and the calorie value of it can be effectively improved by CaO with nano-TiO2 addition. The apparent activation energy of combustion with nano-TiO2 addition decreased 50.7kJ/mol than that of without nano-TiO2 addition simultaneously. |
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Characterization of Fossil and BioFuels: Challenges and Progress
8:25 AM-12:10 PM, Sunday, August 19, 2007 Boston Park Plaza -- Arlington Rm, Oral
Division of Fuel Chemistry |