Hydride removal method for liquid metal heat exchange fluid in high hydrogen permeation environment
US6086654A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B9/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for purifying liquid metal heat exchange fluids uses a contacting drum in combination with purifiers to control metal hydride precipitation in a process with high hydrogen permeation. The contacting drum receives a slip stream of a circulating liquid metal stream and removes hydrogen from dissolved hydride by providing a high interfacial surface area and sufficient temperature for hydride decomposition under vacuum conditions. The liquid metal with a reduced hydride level may be returned to the circulating heat exchange stream or undergo further purification by hydride precipitation and filtration in a cold trap. The drum may be integrated with the cold traps to decompose re-dissolved hydride from a regenerant stream that dissolves precipitated hydride from the cold traps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.