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Ammonia and nitrogen-based fertilizer production by solar-thermochemical processes

Vieten, Josua and Guban, Dorottya and Roeb, Martin and Lachmann, Bruno and Richter, Sebastian and Sattler, Christian (2020) Ammonia and nitrogen-based fertilizer production by solar-thermochemical processes. AIP Conference Proceedings, 2303, p. 170016. American Institute of Physics (AIP). doi: 10.1063/5.0030980. ISSN 0094-243X.

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Official URL: https://aip.scitation.org/doi/abs/10.1063/5.0030980


Ammonia is one of the most-produced chemicals in the world. It is applied in the fertilizer industry, and nitrogen fertilizers are a necessity to feed the world's growing population. Due to the high energy demand of the Haber- Bosch ammonia synthesis process, and due to the energy-intensive production of its precursors hydrogen and nitrogen, this process is associated with a significant carbon footprint. To reduce the greenhouse gas emissions of ammonia and fertilizer production, the authors develop solar-thermochemical routes for the production of nitrogen and hydrogen. Here we present an energetic optimization for combining pressure swing adsorption and thermochemical air separation to beat the energy efficiency of cryogenic air separation, and show recent results on materials development and experimental test campaigns of such two-step thermochemical redox cycles. We show that solar-thermochemical air separation is feasible and hint towards potential improvements of this technology and associated synergistic effects in fertilizer production. By this means, the CO2 emissions of fertilizer production can be significantly reduced through application of concentrated solar energy. Future challenges include reactor design and heat recovery, as well as the selection of suitable redox materials.

Item URL in elib:https://elib.dlr.de/140486/
Document Type:Article
Title:Ammonia and nitrogen-based fertilizer production by solar-thermochemical processes
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Vieten, JosuaJosua.Vieten (at) dlr.deUNSPECIFIED
Guban, Dorottyadorottya.guban (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Lachmann, BrunoBruno.Lachmann (at) dlr.deUNSPECIFIED
Richter, SebastianSebastian.Richter (at) dlr.deUNSPECIFIED
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Date:11 December 2020
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1063/5.0030980
Page Range:p. 170016
Publisher:American Institute of Physics (AIP)
Keywords:solar, ammonia, air separation, thermochemical
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Solar Fuels
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:18 Jan 2021 10:54
Last Modified:19 Jan 2021 04:13

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