Combustion characteristics research of Funshun oil shale semi-coke

In order to improve the efficiency of the oil shale semi-coke combustion characteristics to the Fushun oil shale refining process,which main source of heat is the semi-coke' soxidation,three Fushun oil shale semi-coke's surface morphology and combustion characteristics with different coke making temperature 450 ℃,550 ℃ and 650 ℃ are reasearched by SEM and TG.The results show that the semi-coke surface becomes rough and serious feathering duing to volatile releasing.TGA data shows that the semi-coke's ignition temperature rise with the high semi-coke's coke making temperature,the ignition temperature increased to 408.76 ℃ of J3 semi-coke from 384.7 ℃ of J1 semi-coke at 20 ℃/min what mainly duing to releaing more combustible material in coke making process at high temperature.Char activation energy is relatively small in a low conversion rate,the activation energy rises at high conversion rates duing to the reduction of combustible and the obstruction of the ash.