(455b) Experimental Optimization of Process Parameters for Ammonia Production
AIChE Annual Meeting
2022
2022 Annual Meeting
Innovations in Process Engineering
Process Intensification and Modular Manufacturing: Intensified Reaction and Separation Processes
Wednesday, November 16, 2022 - 8:20am to 8:40am
Using a CaCl2-based absorber column, we conducted lab-scale tests to optimize the reaction-absorption process parameters and further improve our understanding of RXN-ABS transient behaviour. We evaluated NH3 production in three different modes: reaction-only, reaction-then-absorption, and reaction-absorption. Reaction-only tests provided accurate measurements of the reaction rates, whereas reaction-then-absorption tests allowed to measure the extent of NH3 removal from synthesis gas, downstream of the reactor. The reaction and absorption conditions (pressure, temperature, and space velocity) were varied to evaluate reaction and absorption performance in these tests. Later, these optimized conditions were used to evaluate reaction-absorption performance in a transient and cyclic mode. The NH3 release conditions and absorber cycling were further studied to achieve +95% NH3 purity downstream of the absorber, upon regeneration.
References:
Nowrin, Fouzia Hasan, and Mahdi Malmali. "Optimizing Reaction-Absorption Process for Lower Pressure Ammonia Production." ACS Sustainable Chemistry & Engineering 10.37 (2022): 12319-12328.
Hrtus, Daniel J., et al. "Achieving+ 95% Ammonia Purity by Optimizing the Absorption and Desorption Conditions of Supported Metal Halides." ACS Sustainable Chemistry & Engineering 10.1 (2021): 204-212.