Energy and exergy assessments of dehydrogenation of propane for propene production

The 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.