(59e) Unlocking the Potential of Open-Ocean Wind Energy Via Green Offshore Ammonia Production
AIChE Annual Meeting
Monday, November 8, 2021 - 9:00am to 9:15am
While research has been conducted on ammonia production with offshore resources, most of them only consider transmitting offshore generated electricity to shore for ammonia production on land [3,4]. In this work, we assess the techno-economic viability of wind-powered offshore ammonia production by applying a superstructure-based optimization approach that determines the optimal design and operational schedule of the process. This approach allows a systematic selection among various means of chemical production, storage, and transportation as well as different energy transmission, conversion, and storage technologies. We optimize the design with regard to the levelized cost of ammonia (LCOA) for given demands at locations with different distances to shore, water depths, and wind profiles. Our results show that the LCOA depends heavily on the wind speed and means of chemical transportation or electricity transmission. When the distance to shore is relatively small, it is economically more favorable to transmit the generated electricity to shore and produce ammonia onshore. However, as the distance increases, shipping offshore produced ammonia becomes the better option. Also, as the distance increases, the economics favor transporting ammonia using ships rather than pipelines. Our analysis demonstrates the potential of green offshore ammonia and provides insights that can help identify suitable locations for realizing this new concept.
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