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Title: Purification of Chloride Salts for Concentrated Solar Applications

Abstract

The increased interest in high temperature molten salt technology, including concentrated solar power (CSP), has resulted in an increased need for high purity alkali and alkaline earth chloride salts. One lingering question remains in the technoeconomic analysis: ‘How clean is clean enough?’ High-quality corrosion experiments are necessary to design alloys with enhanced corrosion resistance, and ultimately to realize a cost-effective CSP facility. To conduct high-quality, reproducible corrosion experiments, high purity salt with known impurity compositions must be achievable. Commercial high purity salts are qualified on the basis of metal impurity content, with cost increasing significantly as purity increases. However, non-metallic impurities such as oxygen and moisture content are extremely relevant to concentrated solar or nuclear applications are. For this reason, efforts to clean salts at Oak Ridge National Laboratory (ORNL) have centered upon a modified carbochlorination process which addresses oxygen and moisture-based impurities. This report will focus on the modified carbochlorination procedure utilized to purify magnesium chloride-containing salts for concentrated solar power applications.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1506795
Report Number(s):
ORNL/LTR-2018/1052
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 14 SOLAR ENERGY

Citation Formats

Mayes, Richard T., Kurley III, James Matthew, Halstenberg, Phillip W., McAlister, Abbey, Sulejmanovic, Dino, Raiman, Stephen S., Dai, Sheng, and Pint, Bruce A. Purification of Chloride Salts for Concentrated Solar Applications. United States: N. p., 2018. Web. doi:10.2172/1506795.
Mayes, Richard T., Kurley III, James Matthew, Halstenberg, Phillip W., McAlister, Abbey, Sulejmanovic, Dino, Raiman, Stephen S., Dai, Sheng, & Pint, Bruce A. Purification of Chloride Salts for Concentrated Solar Applications. United States. https://doi.org/10.2172/1506795
Mayes, Richard T., Kurley III, James Matthew, Halstenberg, Phillip W., McAlister, Abbey, Sulejmanovic, Dino, Raiman, Stephen S., Dai, Sheng, and Pint, Bruce A. 2018. "Purification of Chloride Salts for Concentrated Solar Applications". United States. https://doi.org/10.2172/1506795. https://www.osti.gov/servlets/purl/1506795.
@article{osti_1506795,
title = {Purification of Chloride Salts for Concentrated Solar Applications},
author = {Mayes, Richard T. and Kurley III, James Matthew and Halstenberg, Phillip W. and McAlister, Abbey and Sulejmanovic, Dino and Raiman, Stephen S. and Dai, Sheng and Pint, Bruce A.},
abstractNote = {The increased interest in high temperature molten salt technology, including concentrated solar power (CSP), has resulted in an increased need for high purity alkali and alkaline earth chloride salts. One lingering question remains in the technoeconomic analysis: ‘How clean is clean enough?’ High-quality corrosion experiments are necessary to design alloys with enhanced corrosion resistance, and ultimately to realize a cost-effective CSP facility. To conduct high-quality, reproducible corrosion experiments, high purity salt with known impurity compositions must be achievable. Commercial high purity salts are qualified on the basis of metal impurity content, with cost increasing significantly as purity increases. However, non-metallic impurities such as oxygen and moisture content are extremely relevant to concentrated solar or nuclear applications are. For this reason, efforts to clean salts at Oak Ridge National Laboratory (ORNL) have centered upon a modified carbochlorination process which addresses oxygen and moisture-based impurities. This report will focus on the modified carbochlorination procedure utilized to purify magnesium chloride-containing salts for concentrated solar power applications.},
doi = {10.2172/1506795},
url = {https://www.osti.gov/biblio/1506795}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 13 00:00:00 EST 2018},
month = {Thu Dec 13 00:00:00 EST 2018}
}