Study on the Mechanism of Calcium Oxide Combustion Desulfurization Catalyzed by Nano-titanium Oxide
The effect of nano-titanium oxide dosage, Ca/S molar ratio, temperature on the calcium oxide combustion desulfurization efficiency was 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 studied using thermogravimetric analyzer. The catalysis mechanisms of nano-titanium oxide on combustion and desulfurization were discussed. The results show that desulfurization efficiency was 87.8％ when nano-titanium oxide dosage is 8％, Ca/S 2, temperature 850℃; it was 13.4％ higher than that without nano-titanium oxide addition. The ignition temperature of lignite coal decreased 17℃ by nano-TiO2 with CaO addition. The calorie value of lignite can be effectively improved by nano-TiO2 with CaO addition and the apparent activation energy of combustion with nano-TiO2 addition decreased 5.9kJ/mol than that of without nano-TiO2 addition simultaneously. The results may be used to provide a useful basis for further applying nano-TiO2 additive in power plant.
Nano-titanium oxide Combustion Calcium oxide desulfurization Catalysis mechanism
Shuqin Wang Yi Zhao
School of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China
国际会议
2007杭州国际动力工程会议(The International Conference on Power Engineering 2007)
杭州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）