Oxidative dehydrogenation of ethane under a cyclic redox scheme – Process simulations and analysis

摘要: Abstract Steam cracking of ethane is an energy intensive process (15–25 GJ th /tonne ethylene) involving significant coke formation and CO 2 /NO x emissions. We propose alternative two-step redox (or chemical looping) oxidative dehydrogenation (CL-ODH) scheme where hydrogen, produced from cracking, selectively oxidized by lattice oxygen a catalyst, in the first step. Regeneration subsequent step heats with sensible heat providing thermal needed for reaction. The overall provides minimal parasitic loss significantly reduced formation, while favoring ethylene through removal hydrogen. In current study, CL-ODH simulated ASPEN Plus ® using experimental data on Mn-based catalyst. compared steam production capacity 1 million tonne/year. Results indicate that process, 85% single-pass conversion, 82% reduction demand downstream section consumes approximately 23.5% less energy, 32.1% compression work. Increase conversion further reduces downstream. For every tonne ethylene, has 7.35 excess fuel whereas requires external input 1.42 th.