(682a) Sustainable Ammonia Production through Process Synthesis and Optimization
Renewable resources are geographically distributed and an optimal solution at a location might not be feasible let alone optimal for another location. The distributed nature of the resources necessitates the concept of decentralized energy production. With this work, we want to contribute a study on the production of ammonia from various renewable sources, such as municipal solid waste, biomass, solar energy, and wind energy. In order to determine the economic and technical feasibility of novel ammonia production methods, a global optimization-based process synthesis approach is used to determine the optimal process topologies while minimizing the annualized cost of ammonia production. A superstructure of process alternatives is modelled as a large-scale mixed-integer nonlinear optimization (MINLP) model, with simultaneous heat, power, and water integration. The nonconvex MINLP model is solved to global optimality by using a branch-and-bound global optimization algorithm. Several case studies will be examined to investigate the types of available renewable resource and production scale on topological decisions.
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