Heat and mass transfer of coal particles pyrolysis based on weight loss curve
ZHANG Xuhui
CHEN Zan'ge
WU Peng
TENG Jilin
ZHANG Peilin
Abstract：To improve the applicability and accuracy of heat and mass transfer model,the coal pyrolysis model was built based on the thermal weight loss curve to replace the DEAM model.The heat and mass transfer process of coal particles were described by equation of heat conduction and mass conservation,the model was validated by the testing pyrolysis weight loss platform of coal particle.The results show that the average relative deviations of the exhalation of 4 mm,8 mm,12 mm coal volatile are 6.21％,5.11％,4.92％ respectively under the condition of ambient temperature 900 ℃ and the flow velocity of carry gas 0.06 m/s.The average relative deviations of the exhalation of 4 mm coal volatile are 6.21％,5.54％,5.20％,under the condition of ambient temperature 900,750,650 ℃ and flow velocity of carry gas 0.06 m/s.
Keywords：coal pyrolysisheat and mass transferweight loss curvevolatile
Publication Date：2017-01-01