Production of Hydrogen and Electricity needed for an Olefin Plant using Renewable Energies

Articles in Press

Document Type : Research Article

Authors

1 School of Chemical Engineering, University of Tehran, Tehran, I.R. IRAN

2 School of Chemical Engineering, University of Tehran, Tehran, IRAN

Abstract

This study attempts to investigate the production of green hydrogen from solar and wind energy resources. The produced hydrogen will be utilized to hydrogenate carbon dioxide and produce light olefins. The required CO2 is supplied by a cement plant located in the southeast of Iran. The olefin production plant requires 1420 kg/h of hydrogen for carbon dioxide hydrogenation and 32 MW of electricity for heating, cooling, and electrical equipment. To fulfill these demands, a superstructure, including solar panels, wind turbines, electrolyzers, lithium and vanadium batteries, electrical converters, hydrogen storage tanks, generators, etc., was designed and simulated by Homer software. The optimization results indicated that the best combination of using solar energy, wind energy, and generators for power production will be 73.4, 26 and 0.6%, respectively. Furthermore, vanadium oxidation-reduction batteries were more cost-effective than lithium batteries for energy storage in the optimal system. The economic analysis revealed that the system has a net present cost of 1.38 B$, with levelized costs of hydrogen and electricity of 3.56 $/kg and 0.12 $/kWh, respectively. Finally, the effect of changing the price of different components on the economic parameters and viability of the plan was investigated. The results demonstrated that the purchasing prices of solar panels and electrolyzers have a significant effect on economic parameters.

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Main Subjects

Nashrieh Shimi va Mohandesi Shimi Iran

Articles in Press, Accepted Manuscript
Available Online from 14 February 2024

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