Title :
Study on the Coal Combustion and Desulfurization Catalyzed by Nano-Additives
Author :
Zhao, Yi ; Wang, Shuqin ; Li, Dandan
Author_Institution :
Sch. of Environ. Sci. & Eng., North China Electr. Power Univ., Baoding, China
Abstract :
The effects of nano-TiO2 dosage, Ca/S and temperature on CaO desulfurization and coal combustion were studied. The products were characterized by SEM and IR analysis. The catalysis mechanisms of nano-TiO2 were discussed. The results show that desulfurization efficiency was 87.7% when nano-TiO2 dosage is 6%, Ca/S 2, temperature 850degC; it was 16.8% higher than that without addition. The ignition temperature, the burnout temperature and apparent activation energy of bituminous decreased 3degC, 8degCand 2.9 kJ/mol by nano-TiO2 with CaO addition respectively. The pore diameter and surface area of coal ashes with nano-TiO2 addition increase because of the active centers of nano-TiO2 surface; this is helpful to the diffusion and reaction of SO2 and O2, and the desulphurization and coal combustion efficiency increase. The results may be used to provide a useful basis for further applying nano-TiO2 additive in power plant.
Keywords :
additives; catalysis; catalysts; coal; coal ash; combustion; diffusion; ignition; infrared spectra; nanostructured materials; porosity; scanning electron microscopy; titanium compounds; IR analysis; SEM; TiO2; apparent activation energy; burnout temperature; catalysis; coal ashes; coal combustion; desulphurization; diffusion; ignition temperature; nanoadditive; nanosurface; pore diameter; surface area; temperature 850 degC; Additives; Ash; Calcium; Combustion; Flue gases; Infrared spectra; Pollution measurement; Power generation; Scanning electron microscopy; Temperature;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5163506
