Process for preparation of anhydrous metallic chlorides from waste catalysts
US4182747A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1977 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Dec 20, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G51/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for recovering metallic constituents of spent or waste catalysts containing metallic compounds fixed on an aluminous support. The process is particularly applicable for the recovery of metals such as Al, Mo, V, Ni and Co, contained in spent catalyst. The process comprises transforming the metals to be recovered into volatile chlorides by carbochlorination and then separating the chlorides obtained by dry means and fixing them successively in a selective manner. The separation of AlCl.sub.3 is accomplished by passage through granules of anhydrous NaCl, and the separation of MoCl.sub.5 by passage through granules of crystallized KCl. The process is particularly suitable for the treatment of waste catalyst from the catalytic hydrocracking or hydrodesulfurization of oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.