| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Cost-effective, Reliable Containment of High-temperature Molten Chlorides for Heat Transfer and Thermal Energy Storage |
| Author(s) |
Liangjuan Gao, Elizabeth A. Laskowksi, Kenneth A. McGowan, Robert M. Cullen, Mario Caccia, Kenneth H. Sandhage |
| On-Site Speaker (Planned) |
Liangjuan Gao |
| Abstract Scope |
The drive for lower-cost dispatchable electricity from concentrating solar power plants has led to consideration of earth-abundant molten chlorides, such as MgCl2-KCl-NaCl salts, as media for high-temperature heat transfer and thermal energy storage. Large-scale, reliable containment of these molten chlorides requires cost-effective tanks and pipes with walls that are resistant to molten salt corrosion and penetration, and that provide the required resistance to heat transport. Unfortunately, upon exposure to such molten chlorides at 550-750°C, low-cost metal alloys have exhibited appreciable corrosion, whereas low-cost porous ceramics have exhibited appreciable molten chloride penetration. While such corrosion and penetration may addressed by using certain nickel-based superalloys or high-density (closed porosity) ceramics, these materials would be prohibitively expensive for long pipe lengths and large storage tanks. In this talk, cost-effective materials and processes for generating pipe and tank liners that are resistant to corrosion and penetration by molten chlorides at >750oC will be discussed. |
| Proceedings Inclusion? |
Planned: |