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Geometric Optimization of an Electrochemical Purification Cell to Prevent Corrosion in CSP Plants During Operation: Paper No. 090008

  • Kerry Rippy
  • , Liam Witteman
  • , Abigail Monasterial
  • , Patrick Taylor
  • , Judith Vidal
  • National Renewable Energy Laboratory
  • Colorado School of Mines
  • Advanced Energy Systems

Research output: Contribution to conference › Paper

Abstract

When exposed to moisture or oxygen, molten chloride salts produce corrosive impurities which degrade containment alloys. This can significantly decrease the lifetime and increase costs of molten-salt-based systems. To overcome this barrier, we designed and modeled an electrochemical purification cell to remove the corrosive impurity MgOH+. Various reactor architectures, including continuous stirred tank reactors (CSTRs) and plug flow reactors (PFRs) were investigated. Steady-state thermoelectric properties were evaluated using analytical methods, allowing assessment of the effects of structure and design parameters such as flow rate, cell length, and cross-sectional area of molten salt. The results suggest that our design could most effectively increase reliability and decrease costs of molten-chloride-salt-based systems by protecting them during continuous operation using an annular plug flow reactor.
Original languageAmerican English
Number of pages8
DOIs
StatePublished - 2023
EventSolarPACES: Solar Power and Chemical Energy Systems: 27th International Conference on Concentrating Solar Power and Chemical Energy Systems - Online
Duration: 27 Sep 2021 → 1 Oct 2021

Conference

ConferenceSolarPACES: Solar Power and Chemical Energy Systems: 27th International Conference on Concentrating Solar Power and Chemical Energy Systems
CityOnline
Period27/09/21 → 1/10/21

Bibliographical note

See NREL/CP-5500-80088 for preprint

NLR Publication Number

  • NREL/CP-5500-88032

Keywords

  • analytical modeling
  • corrosion
  • CSP
  • electrochemical purification
  • molten chloride salts

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