Techno-economical analysis on the production of hydrogen

Techno-economical analysis on the production of hydrogen

van Zanten, Jimmy (TU Delft Applied Sciences)

Posada Duque, J.A. (mentor)
Osseweijer, P. (graduation committee)
Hollmann, F. (graduation committee)

Delft University of Technology

Life Science and Technology (LST)

2024-07-02

Hydrogen is an interesting and promising alternative for fuels. Currently, most hydrogen is produced via a process called steam reforming, where a reaction between methane and water occurs, with carbon monoxide and carbon dioxide as waste products and released in the atmosphere. This work presents a study on the sustainable production of hydrogen. A pool of six hydrogen processes were chosen; three based on electrolysis, two based on fermentation and one based on electrolysis combined with a microbial community. On these six methods an early stage analysis was applied, screening for economics, environmental impacts and processrelated costs and impacts. Two electrolysis methods were selected for a conceptual design; alkaline electrolysis (AE) and polymer electrolyte membrane (PEM) electrolysis, both for an annual production of 1 million kg hydrogen. The fixed capital was established $86.8M for AE and $62.3M for PEM. After the design, a techno-economic analysis was performed, providing the total production cost (TPC) and the minimum fuel selling price (MFSP). For the AE, the MFSP resulted in being $21.46/kg hydrogen and an TPC of $17.16/kg hydrogen. The biggest contribution to the MFSP was the depreciation, being $10.19/kg hydrogen. The PEM electrolysis had a MFSP of $17.56/kg hydrogen and an TPC of $14.05/kg hydrogen. Also for PEM electrolysis, the biggest contribution to the MFSP was the depreciation, which was $7.32/kg. A sensitivity analysis was performed and showed the biggest uncertainty in the equipment cost and the interest rate. The MFSP for AE changes ± $3.79/kg hydrogen by a change in equipment cost of 30% and ± $3.27 - $3.72 by a 5 percentage point change of the interest rate. The MFSP for PEM changes ± $2.73/kg hydrogen by a change in equipment cost of 30% and ± $2.36 - $2.73 by a 5 percentage point change of the interest rate. Based on the results from the techno-economic analysis and sensitivity analysis, PEM electrolysis was identified as the superior method.

hydrogen
Techno-economic analysis (TEA)
Electrolysis

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Student theses

master thesis

© 2024 Jimmy van Zanten