Development of a new multi-generation system integrated with the S-Graz and Cu-Cle cycles for ammonia, hydrogen and power generation

Abstract

A new multi-generation plant incorporated with the ammonia synthesis reactor, a Cu-Cl cycle, and a S-Graz cycle plus a gas turbine cycle for electricity, hydrogen as well as ammonia production recommended and dissected from exergy, energy, exergoeconomic, exego-environmental, and environmental (5E) aspects, in this research. Furthermore, to investigate the effect of input variables on the plant function criteria, exhaustive sensitivity evaluations were carried out and disputed in detail. The exergy and energy yields, the products ‘sum unit cost, the cost rate of environmental penalty as well as the emission rate of the offered poly-generation plant have been 41.16%, 45.57%, 369.6 $/GJ, and 0.0001319, respectively. Besides, the plant provided the net power output, hydrogen, and, ammonia of 151488 kW, 0.2199 kg/s, and 1.884 kg/s, sequentially. Also, the whole exergy destruction rate of the plant was computed at about 128.289 MW. Finally, the sensitivity investigations resulted that increasing the hydrogen molar flow rate and high-temperature turbine (HTT) inlet temperature had a positive effect on the techno-eco-environmental performances of the system.