Research on combustion characteristics of Longkou oil shale and semi-coke based on AKTS

Thermo-gravimetric analysis was performed to study influence on ignition temperature and combustibility index during blended combustion of Longkou oil shale and 500°C. semi-coke at the different blended proportions. Based on the TG-DTG curves, the whole combustion process was divided into three combustion reaction stages, that is. water precipitation stage, low-temperature stage and high- temperature stage. The results reveal that there is a tendency to increase for the combustion release index with increasing the ratio of the oil shale. Furthermore, dynamic calculation is carried out by AKTS- thermokinetics software. Compare experimental curves with the theoretical simulation curves. Based on the results, it found by the proportion of oil shale samples increased, activation energy first decreases and then increases. Comprehensive each sample combustion parameters, shale and semi-coke ratio of 2:1 is found as the current combustion test the optimal mixing ratio. © 2016, Chemical Industry Press Co., Ltd.. All rights reserved.