| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Effect of Salt Additives and Impurities on Flowing Commercial Chloride Salt Compatibility |
| Author(s) |
Bruce A. Pint, Dino Sulejmanovic, J Matthew Kurley |
| On-Site Speaker (Planned) |
Bruce A. Pint |
| Abstract Scope |
The next generation of concentrating solar power (CSP) plants at >700°C will require thermal storage such as chloride salts. Once reasonable compatibility is demonstrated in isothermal conditions, flowing tests in a temperature gradient are needed to truly demonstrate that mass transfer is not a concern. Previously, highly purified, commercial MgCl2-KCl-NaCl+0.04%Mg was tested in an alloy 600 (Ni-16Cr-9Fe) thermal convection loop (TCL) with peak temperatures of 700°C for 1000h and a second experiment at 750°C for 110h, both with a temperature gradient of >100°C. Acceptable corrosion rates were measured for alloy 600 and C276 (Ni-16Cr-15Mo) specimens. The next phase of the work will conduct a similar alloy 600 TCL experiment with heat treated commercial salt, perhaps with a higher Mg content, to understand how impurities and additives may affect compatibility. This work was funded by the U.S. Department of Energy Solar Energy Technologies Office under Award Number 33873. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |