Pyrolysis behaviors of tumuji oil sand by thermogravimetry (TG) and in a fixed bed reactor

The pyrolysis reactivity and kinetic characteristics of Tumuji oil sand from Inner Mongolia were investigated at heating rates of 5, 10, 20, and 40 degrees C/min in a thermogravimetric analyzer. The kinetic parameters of pyrolysis at different heating rates were determined and compared on the basis of a first-order reaction model. The effects of the temperature and pressure on conversion, liquid (oil) and gas yields, and product composition of Tumuji oil sand pyrolysis were further studied in a fixed bed reactor. The results show that all of the conversion and liquid and gas yields increase with an increasing temperature and tend to be constant after temperature more than 520 degrees C. Increasing pressure will decrease the conversion and yield of pyrolysis. The main component in the liquid product is saturates, which has a higher content than that in the oil sand sample. The gaseous products consist of H-2, CO, CO2, CH4, C2H4, and C2H6. With an increase of the temperature, the CO2 content decreases but the contents of other species increase.