Abstract
Ammonia is a hydrogen storage material that may solve several problems related to hydrogen transportation and storage in the hydrogen economy. An innovative energy storage and carrier system has proposed from our recent research. In this system, ammonia is generated from nitrogen oxides in combustion flue gas; NO_x is converted to HNO_3 by oxidation, and then HNO_3 is converted to NH_3 by reduction. An attractive advantage is that a rector of NO_x oxidation has both HNO_3 production and de-NO_x without reduction agent (NH_3). The actualization of the energy system was investigated in this work. The key issue was energy efficiency of the reactor of NO_x oxidation. Energy efficiency of 70% for NH3 production will be attained at the energy efficiency of 100 g-NO/kWh for oxidation reactor.
