Proper intermittency management in green ammonia production is a key performance driver of the whole production plant. The main challenge is to manage two units: the hydrogen production by water electrolysis which is very flexible and reactive together with the ammonia synthesis which is more sensitive to fluctuation.
Attention is often focused on maximizing hydrogen production by trying to follow as close as possible the available power, and by using hydrogen storage to keep a constant Ammonia production. This simplistic approach usually leads to a higher Levelized Cost of Hydrogen (due to high storage cost) and safety issues (due to high pressure hydrogen).
Rely has completed a case study based on very large ammonia production project (> 1GW electrolyser installed capacity) , proposing to our client the best plant operation.
This paper describes the results of this study.
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