Experimental investigation on combustion characteristics of oil shale semi-coke and bituminous coal blends
SUN Bai-zhong
WANG Qing
SHEN Peng-yu
LIU Hong-peng
QIN Hong
LI Shao-hua
Abstract：Thermo-gravimetric analysis (TGA) was employed to investigate the combustion characteristics of oil shale semi-coke, bituminous coal and their blends. The effect of blends ratio,interaction mechanism and heating rate on the combustion process was studied. Discrepancies between the experimental and calculated TG/DTG profiles were considered as a measurement of the extent of interactions occurring on co-combustion. The results indicate that with the increasing of the ratio of coal, the ignition temperature decreases slightly, the peak of DTG curve shifts to higher temperatures, the burnout temperature decreases, and the combustion characteristic is improved. The interaction of the combustion of the mixed fuel occurs mainly in low-temperature zone (450 ~ 645 ℃). The maximum combustion rates of the experiment are higher than those of the calculated. It means that the combustion stability is enhanced. As the increase of the heating rate, the ignition temperature and the temperature corresponding to the maximum combustion rate are increased ,the combustibility is improved.
Keywords：oil shale semi-cokeblended combustioncombustibility indexthermo-gravimetric analysis
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 476-480 )