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Naslov:Chemistry of the iron-chlorine thermochemical cycle for hydrogen production utilizing industrial waste heat
Avtorji:ID Valant, Matjaž (Avtor)
ID Luin, Uroš (Avtor)
Datoteke:.pdf 1-s2.0-S0959652624001288-main.pdf (3,17 MB)
MD5: A9AD0BC1552DE91C4EDC1FDD0934BA76
 
.pdf 240124.pdf (3,80 MB)
MD5: 2FFC1BD1430426644A282E072A43BD06
 
URL https://www.sciencedirect.com/science/article/abs/pii/S0959652624001288?via%3Dihub
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:This research presents an inventive thermochemical cycle that utilizes a reaction between iron and HCl acid for hydrogen production. The reaction occurs spontaneously at room temperature, yielding hydrogen and a FeCl2 solution as a by-product. Exploring the thermal decomposition of the FeCl2 by-product revealed that, at conditions suitable for utilization of low-temperature industrial waste heat (250 °C), chlorine gas formation can be circumvented. Instead, the resulting by-product is HCl, which is readily soluble in water, facilitating direct reuse in subsequent cycles. The utilization of low-temperature industrial heat not only optimizes resource utilization and reduces operational costs but also aligns with environmentally sustainable production processes. From the kinetic studies the activation energy was calculated to be 45 kJ/mol and kinetics curves were constructed. They showed significant kinetics at room temperature and above but rapid decrease towards lower temperatures. This is important to consider during real-scale technology optimization. The theoretical overall energy efficiency of the cycle, with 100% and 70% heat recuperation, was calculated at 68.8% and 44.8%, respectively. In practical implementation, considering the efficiency of DRI iron reduction technology and free waste heat utilization, the cycle achieved a 41.7% efficiency. Beyond its energy storage capabilities, the Iron-chlorine cycle addresses safety concerns associated with large-scale hydrogen storage, eliminating self-discharge, reducing land usage, and employing cost-effective storage materials. This technology not only facilitates seasonal energy storage but also establishes solid-state energy reserves, making it suitable for balancing grid demands during winter months using excess renewable energy accumulated in the summer.
Ključne besede:chemical cycles, hydrogen production, thermal decomposition, reaction kinetics, iron, chlorine
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2024
Leto izida:2024
Št. strani:str. 1-8
Številčenje:Vol. 438, [article no.] 140681
PID:20.500.12556/RUNG-8751 Novo okno
COBISS.SI-ID:180664323 Novo okno
UDK:54
ISSN pri članku:0959-6526
DOI:10.1016/j.jclepro.2024.140681 Novo okno
NUK URN:URN:SI:UNG:REP:BV7M4AYE
Datum objave v RUNG:12.01.2024
Število ogledov:2736
Število prenosov:44
Metapodatki:XML DC-XML DC-RDF
:
VALANT, Matjaž in LUIN, Uroš, 2024, Chemistry of the iron-chlorine thermochemical cycle for hydrogen production utilizing industrial waste heat. Journal of cleaner production [na spletu]. 2024. Vol. 438, no. 140681, p. 1–8. [Dostopano 5 april 2025]. DOI 10.1016/j.jclepro.2024.140681. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=8751
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Gradivo je del revije

Naslov:Journal of cleaner production
Skrajšan naslov:J. clean. prod.
Založnik:Elsevier
ISSN:0959-6526
COBISS.SI-ID:15470597 Novo okno

Gradivo je financirano iz projekta

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P2-0412
Naslov:Heterogeni procesi na površinah trdnin za trajnostne tehnologije

Licence

Licenca:CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc/4.0/deed.sl
Opis:Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.

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