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Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants - A review

Ding, Wenjin and Bonk, Alexander and Bauer, Thomas (2018) Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants - A review. Frontiers of Chemical Science and Engineering. Springer. DOI: 10.1007/s11705-018-1720-0 ISSN 2095-0179

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Official URL: https://link.springer.com/article/10.1007/s11705-018-1720-0

Abstract

Recently, more and more attention is paid on applications of molten chlorides in concentrated solar power (CSP) plants as high-temperature thermal energy storage (TES) and heat transfer fluid (HTF) materials due to their high thermal stability limits and low prices, compared to the commercial TES/HTF materials in CSP - nitrate salt mixtures. A higher TES/HTF operating temperature leads to higher efficiency of thermal to electrical energy conversion of the power block in CSP, however causes additional challenges, particularly increased corrosiveness of metallic alloys used as containers and structural materials. Thus, it is essential to study corrosion behaviors and mechanisms of metallic alloys in molten chlorides at operating temperatures (500-800°C) for realizing the commercial application of molten chlorides in CSP. The results of studies on hot corrosion of metallic alloys in molten chlorides are reviewed to understand their corrosion behaviors and mechanisms under various conditions (e.g., temperature, atmosphere). Emphasis has also been given on salt purification to reduce corrosive impurities in molten chlorides and development of electrochemical techniques to in-situ monitor corrosive impurities in molten chlorides, in order to efficiently control corrosion rates of metallic alloys in molten chlorides to meet the requirements of industrial applications.

Item URL in elib:https://elib.dlr.de/125887/
Document Type:Article
Title:Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants - A review
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ding, WenjinWenjin.Ding (at) dlr.dehttps://orcid.org/0000-0001-5037-5810
Bonk, AlexanderAlexander.Bonk (at) dlr.dehttps://orcid.org/0000-0002-0676-7267
Bauer, Thomasthomas.bauer (at) dlr.dehttps://orcid.org/0000-0003-4080-7944
Date:2 October 2018
Journal or Publication Title:Frontiers of Chemical Science and Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s11705-018-1720-0
Publisher:Springer
ISSN:2095-0179
Status:Published
Keywords:TES, molten chlorides, corrosion, mitigation
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Storage)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Ding, Wenjin
Deposited On:14 Jan 2019 17:12
Last Modified:14 Jan 2019 17:12

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