Lessons learned from corrosion of materials with molten salts during molten salt tank preheating

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dc.contributor.authorPrieto, Cristina
dc.contributor.authorRuiz-Cabañas, Javier
dc.contributor.authorMadina, Virginia
dc.contributor.authorFernández, A. Inés
dc.contributor.authorCabeza, Luisa F.
dc.contributor.institutionMATERIALES PARA CONDICIONES EXTREMAS
dc.date.issued2022-10-15
dc.descriptionPublisher Copyright: © 2022 Elsevier B.V.
dc.description.abstractOne of the biggest challenges of concentrating solar power (CSP) is achieving cost-reduction in the thermal energy storage (TES) system. Operating conditions of molten salt CSP plants includes intermittent exposure of the TES tanks materials (i.e., carbon steel, stainless-steel) in contact with molten salt (NaNO3–KNO3). This manuscript evaluates the lessons learnt in the performance of such tank materials with molten salts under continuous and intermittent exposure in a demo plant for indirect thermal storage at 400 °C. This study shows that the hot tank upper section developed breakaway corrosion phenomena generating oxides layers, which easily delaminates from the base metal. This damage is produced by the tank preheating system, which introduced a non-controlled amount of CO2 inside the tanks. Then, the carbon steel upper section is exposed in the hot tank to a mixture composed by CO2, water vapour, and chlorides at high temperature, producing this type of attack. The materials tested are carbon and low alloyed steels types A516Gr70, A387Gr11 and A387Gr5, Cr–Mo steel A387Gr9, stainless steels types A304L, A316L and A347. The lessons learnt have been implemented in the commissioning of new commercial plants successfully.en
dc.description.sponsorshipThis work was partially funded by the Ministerio de Ciencia, Innovación y Universidades de España ( RTI2018-093849-B-C31 and RTI2018-093849-B–C32 - MCIU/AEI/FEDER , UE ) and by the Ministerio de Ciencia, Innovación y Universidaes - Agencia Estatal de Investigación (AEI) ( RED2018-102431-T ). The authors at University of Lleida and University of Barcelona would like to thank the Catalan Government for the quality accreditation given to their research group GREiA (2017 SGR 1537) research group DIOPMA (2017 SGR 138). GREiA and DIOPMA are certified agent TECNIO in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia programme . This work was partially funded by the Ministerio de Ciencia, Innovación y Universidades de España (RTI2018-093849-B-C31 and RTI2018-093849-B–C32 - MCIU/AEI/FEDER, UE) and by the Ministerio de Ciencia, Innovación y Universidaes - Agencia Estatal de Investigación (AEI) (RED2018-102431-T). The authors at University of Lleida and University of Barcelona would like to thank the Catalan Government for the quality accreditation given to their research group GREiA (2017 SGR 1537) research group DIOPMA (2017 SGR 138). GREiA and DIOPMA are certified agent TECNIO in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia programme.
dc.description.statusPeer reviewed
dc.identifier.citationPrieto , C , Ruiz-Cabañas , J , Madina , V , Fernández , A I & Cabeza , L F 2022 , ' Lessons learned from corrosion of materials with molten salts during molten salt tank preheating ' , Solar Energy Materials and Solar Cells , vol. 247 , 111943 . https://doi.org/10.1016/j.solmat.2022.111943
dc.identifier.doi10.1016/j.solmat.2022.111943
dc.identifier.issn0927-0248
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85137168336&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofSolar Energy Materials and Solar Cells
dc.relation.projectIDMinisterio de Ciencia, Innovación y Universidades, MCIU, RTI2018-093849-B–C32 - MCIU/AEI/FEDER-RTI2018-093849-B-C31
dc.relation.projectIDGeneralitat de Catalunya, 2017 SGR 1537-2017 SGR 138
dc.relation.projectIDInstitució Catalana de Recerca i Estudis Avançats, ICREA
dc.relation.projectIDAgencia Estatal de Investigación, AEI, RED2018-102431-T
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsCarbon steel
dc.subject.keywordsConcentrating solar power plants
dc.subject.keywordsCorrosion resistance
dc.subject.keywordsMolten salt
dc.subject.keywordsStainless steel
dc.subject.keywordsThermal energy storage
dc.subject.keywordsElectronic, Optical and Magnetic Materials
dc.subject.keywordsRenewable Energy, Sustainability and the Environment
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsSDG 7 - Affordable and Clean Energy
dc.titleLessons learned from corrosion of materials with molten salts during molten salt tank preheatingen
dc.typejournal article
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