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《Clean Coal Technology》 2013-06
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Co-combustion thermogravimetric experimental study of petroleum coke and coal

LIAO Zhengzhu;TIAN Hong;College of Mechanical and Electrical Engineering,Guangdong University of Petrochemical Technology;  
Taking the mixed fuel of petroleum coke and coal as research object,do the thermogravimetric experiment using the TG- DTG- DSC( thermogravimetric-differential thermogravimetric-differential scanning calorimetry)thermal analysis technology,investigate the co-combustion characteristics curves and calculate the variety of combustion characteristics index.Compute the combustion kinetic parameters by suing subtractive differential method Freeman-Carroll.The results indicate that the every mixed fuel has a single DTG curve of peaks and the downward DSC curve of exothermic peak at the high temperature.The mixed fuel combustion process is the ignition and combustion process of coke at the high temperature.The heat release of the mixed samples of S2,S3 and S5 are relatively small and not concentrated,and the time of combustion process is long and the combustion is incomplete.The heat release of the mixed samples of S4 and S6 are relatively larger and the heat released time is short.The ignition characteristics index,the burnout characteristics index and the synthetic combustion characteristics parameters of the mixed fuel S6 having the most bituminous coal content are higher than the corresponding values of the other mixed samples and petroleum coke,the combustible characteristics index of mixed sample S6 is larger than the corresponding value of petroleum coke.The activation energy of all the mixed feuls are less than that of petroleum coke,and the mixed samples are easier igniting combustion than petroleum coke.The proper mixing ratio of petroleum coke and coal leads to great mixed fuels co-combustion characteristics,which is better than the pure combustion characteristics of petroleum coke.The study provides theoretical guidance for the combustion utilization of petroleum coke.
【Fund】: 广东省自然科学基金资助项目(S2012010010448);; 广东省科技计划项目(2011B030900011);; 广东石油化工学院博士启动项目(512119)
【CateGory Index】: TE626.87
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