Design and Analysis of a Supercritical Metal-Water Reactor for Hydrogen Gas Production

Abstract:

In this study, a supercritical metal-water reactor for hydrogen production was designed, simulated, and analysed. As the world urgently seeks to transition towards sustainable energy, hydrogen stands out as a pivotal solution in this shift. This project aims to fill knowledge gaps related to the transition to supercritical conditions through comprehensive analysis, thereby contributing to the advancement of clean energy technologies. Mechanical and thermal properties suitable for a supercritical metal-water reactor were modelled and simulated in SolidWorks 2022, utilizing plots and mesh results. The reactor was designed to produce hydrogen gas and metal oxide as by-products, with the hydrogen gas being released through a pressure relief valve. The reactor cylinder, made of Ti-6AL-4V, was found suitable for operation at a constant pressure of 25 MPa and a temperature of 380°C. The reactor wall was observed to buckle at pressures exceeding 27 MPa and temperatures above 144,000°C, which are beyond the design conditions. The elastic limit of the cylinder was determined to be 868 MPa, and its ultimate tensile strength was 1,258 MPa, with fracture occurring at 620 MPa. The average damage percentage was calculated to be 0.001%, and the total lifecycle was estimated at 10,000,000 cycles. The integrity of the reactor designed for supercritical states was found to be structurally sound. Detailed insights into the effects of pressure and temperature on the selected material were analysed, enhancing understanding of the reactor's performance under various conditions.

• Periodical: Advances in Science and Technology (Volume 160)
• Pages: 19-32
• DOI: https://doi.org/10.4028/p-BItq6w
• Online since: February 2025
• Authors: Chijindu Ikechukwu Igwe*, Paschal Chizuruoke Eze, Miracle Izuchukwu Eze
• Keywords: Clean Energy, Hydrogen Production, Supercritical Metal-Water Reactor, Sustainable Technology

References

[1] K. A. Trowell et al., 'Effect of particle coating on the thermal response of mixtures of micro- and nano-aluminium particles with water', J Therm Anal Calorim, vol. 127, no. 1, p.1027–1036, Jan. 2017.

DOI: 10.1007/s10973-016-5775-1

[2] J. M. Bergthorson, 'Recyclable metal fuels for clean and compact zero-carbon power', Sep. 01, 2018, Elsevier Ltd.

DOI: 10.1016/j.pecs.2018.05.001

[3] K. A. Trowell, S. Goroshin, D. L. Frost, and J. M. Bergthorson, 'Aluminium and its role as a recyclable, sustainable carrier of renewable energy', Appl Energy, vol. 275, Oct. 2020.

DOI: 10.1016/j.apenergy.2020.115112

[4] K. Trowell, S. Goroshin, D. Frost, and J. Bergthorson, 'Hydrogen production rates of aluminium reacting with varying densities of supercritical water', RSC Adv, vol. 12, no. 20, p.12335–12343, Apr. 2022.

DOI: 10.1039/d2ra01231f

[5] F. Dawood, M. Anda, and G. M. Shafiullah, 'Hydrogen production for energy: An overview', Feb. 07, 2020, Elsevier Ltd.

DOI: 10.1016/j.ijhydene.2019.12.059

[6] P. Nikolaidis and A. Poullikkas, 'A comparative overview of hydrogen production processes', Jan. 01, 2017, Elsevier Ltd.

DOI: 10.1016/j.rser.2016.09.044

[7] I. M. Svishchev and K. Imtiaz Choudhry, 'Hydrogen Production from Supercritical Water: Flow Reactor Studies Conference Paper · April 2013 CITATIONS 0 READS 225 2 authors', 2013. [Online]. Available: https://www.researchgate.net/publication/259912366

[8] L. Wei, B. Guo, N. Li, and Z. Heng, 'Design and Internal Flow Characteristic Investigation of High-Temperature H2/Steam-Mixed Working Fluid Turbine', Energies (Basel), vol. 16, no. 13, Jul. 2023.

DOI: 10.3390/en16135072

[9] K. A. Trowell, 'High-temperature and supercritical water oxidation of metals for hydrogen and heat production', 2021.

[10] Z. Karmiol and D. Chidambaram, 'Exposure of Stainless Steel 316 to Sub-critical, Transition, and Near-Supercritical Water.', Journal of Nuclear Materials, 2022.

DOI: 10.5006/3862

[11] R. N. Mutlu, I. Kucukkara, and A. M. Gizir, 'Hydrogen generation by electrolysis under subcritical water condition and the effect of aluminium anode', vol. 45, no. 23, p.12641–12652, 2020.

DOI: 10.1016/j.ijhydene.2020.02.223

[12] Y. Zhang, Y. Wang, and L. Zhang, 'Review on metal dissolution characteristics and harmful metals recovery from electronic wastes by supercritical water', J Clean Prod, 2022.

[13] 'Titanium Properties - Kyocera SGS Europe'. Accessed: Jul. 05, 2024. [Online]. Available: https://kyocera-sgstool.co.uk/titanium-resources/titanium-information-everything-you-need-to-know/titanium-properties/

[14] 'Division 2 SECTION VIII R ules for Construction of Pressure Vessels 2017 ASME Boiler and Pressure Vessel Code an International Code'. [Online]. Available: https://www.asme.org/shop/ certification-accreditation.

DOI: 10.1115/1.859872.ch21

[15] 'Process Piping ASME Code for Pressure Piping, B31 from IHS', 2017. [Online]. Available: http://cstools.asme.org/

DOI: 10.1115/b31

[16] S.B. Tandle and M. Ramgir, 'Design & Analysis of Truinnion Mounted  Ball Valve', International Journal of Science, Engineering and Technology Research (IJSETR), vol. 5, no. 9, Sep. 2016.

[17] 'Anderson Greenwood Direct Spring-Operated Pressure Relief Valves Series 60 and 80', 2017. [Online]. Available: www.valves.emerson.com

[18] D. R. Moss and M. Basic, Pressure Vessel Design Manual, 4th ed. Elsevier, 2013.