مطالعه امكان‌سنجي بكاربري هيدروژن ناشي از ريفورمينگ فاز آبي گليسرول جهت توليد آمونياك در رآكتور يك‌پارچه حرارتي

In this study, the development an‎d feasibility of ammonia production from glycerol in a thermally integrated reactor, including the aqueous phase glycerol reforming process an‎d ammonia production from biomass-derived hydrogen, is investigated. In this system, the exothermic reaction of ammonia production can provide the energy required for the endothermic aqueous phase glycerol reforming reaction, an‎d the aqueous phase glycerol reforming provides the hydrogen gas required for ammonia production. In this regard, a quasi-homogeneous, one-dimensional an‎d steady-state model was developed to determine the temperature an‎d concentration distribution throughout the reactor for the ammonia synthesis section, an‎d a two-phase steady-state model was developed for the heterogeneous catalytic reaction section of the aqueous phase glycerol reforming. The ODE15s comman‎d was used to numerically solve the ordinary differential equations. The integration of the endothermic an‎d exothermic reactions an‎d its effect on the reactor performance were eva‎luated. In the thermally integrated mode, the heat generated by the ammonia reaction was transferred to the endothermic section, increasing the nitrogen conversion from 22% to 33%. The glycerol conversion increased from 35% to 68%. At 350°C, with increasing pressure from 150 atm to 220 atm, the nitrogen conversion increased from 28% to 33%. With increasing temperature at constant pressure, the nitrogen conversion percentage decreased. With increasing glycerol temperature from 200 to 250°C, the glycerol conversion increased by 3%. Increasing pressure had no effect on the glycerol conversion. The simulation results show that the conversion in the thermally integrated model increased significantly compared to the conventional mode. Temperature changes in the two reactions are directed towards producing more products, thus ammonia an‎d glycerol reactions can be integrated together.

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