ABSTRACTThe energy and exergy assessments of the dehydrogenation of propane for propene production process were performed. The results show that when the reaction temperature rises from 400°C to 1000°C, the range of inlet and outlet exergy is 2268∼2376 and 2265∼2341 kJ/mol C3H6, respectively, and the range of exergy destruction is 6.31∼33.24, 9.93∼35.15 and 3.59∼31.99 kJ/mol C3H6 at 5, 25 and 45°C reference environment temperature, respectively. The range of exergy efficiency at discussed reference environment and reaction temperature is 98.52∼99.84%, and decreases with the increasing of reaction temperature and increases with the decreasing of reference environment.