2021 Annual Meeting

(211a) Modeling and Comprehensive Analysis for an Industrial Complex Coupling Allam Power Cycle, Air Separation Unit, and Ammonia Manufacturing Process

Authors

Qiang Xu - Presenter, Lamar University
The sustainable development of global economy requests the effective carbon capture, utilization, and storage (CCUS) for all business sectors. The most cost-effective way for current chemical/petrochemical industries with fossil fuels as main energy/material sources to perform CCUS should focus on cleaner productions instead of end-of-pipe processing. One of such promising technologies is to employ the Allam cycle for power production, which bears a high production efficiency without caron emissions but the commercial-grade CO2 generation instead [1]. In this paper, a new and highly material-and-energy integrated industrial complex, i.e., A3 complex, has been developed, modeled, and comprehensively analyzed. It is a natural gas empowered complex, which includes an Allam power cycle power to generate electricity and pipeline-grade CO2 for commercial utilization; an air separation unit (ASU) powered by the Allam cycle while simultaneously supply the pure oxygen to the Allam cycle as feedstock; as well as an ammonia plant to utilize the nitrogen from ASU to produce ammonia. Compared with standalone ASU, Allam cycle, and ammonia plant, the integrated A3 complex has improved their strengths and mitigated their weaknesses simultaneously. The efficacy of the developed A3 complex has been quantitively demonstrated by rigorous large-scale modeling and simulations with Aspen Plus. Meanwhile, the economic and environmental analyses including production, energy consumptions, and emission comparisons between the developed A3 complex and ordinary standalone processes have also been conducted, which systematically exemplify the excellence of the developed A3 complex.

References

Allam, R.; Martin, S.; Forrest, B.; Fetvedt, J.; Lu, X.; Freed, D.; Brown, G.W., Jr.; Sasaki, T.; Itoh, M.; Manning, J. Demonstration of the Allam Cycle: An update on the development status of a high efficiency supercritical carbon dioxide power process employing full carbon capture. In Proceedings of the 13th International Conference on Greenhouse Gas Control Technologies, GHGT-13, Lausanne, Switzerland, 14–18 November 2016. Energy Procedia 2017, 114, 5948–5966.