Dimethyl ether (DME) is a promising alternative fuel, but direct combustion of DME will result in extra energy penalty for separation. In this paper, an advanced power-generation system with recovery integrating DME fueled chemical-looping combustion is proposed. In the reduction reactor, DME is oxidized by into and , and is reduced into FeO simultaneously. Since the endothermic reduction in with DME requires relatively low-grade thermal energy around , waste heat is used to provide the reaction heat. FeO is oxidized into by air in the oxidation reactor, producing high-temperature flue gas to generate electricity through a thermal cycle. The gas production from the fuel reactor only consists of and , so can be easily separated through condensing with no extra energy penalty. As a result, the thermal efficiency could be expected to be 58.6% at a turbine inlet temperature of . This proposed system may provide a new approach for high efficient use of DME in the industrial fields, and offer a possibility of chemical-looping combustion with inherent capture for the alternative fuel.
An Advanced Power-Generation System With Recovery Integrating DME Fueled Chemical-Looping Combustion
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Han, T., Hong, H., Jin, H., and Zhang, C. (February 23, 2011). "An Advanced Power-Generation System With Recovery Integrating DME Fueled Chemical-Looping Combustion." ASME. J. Energy Resour. Technol. March 2011; 133(1): 012201. https://doi.org/10.1115/1.4003441
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