Hydroconversion multi-metallic catalyst and method for making thereof
US8586500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2011 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Feb 2, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/1033
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant. In the present disclosure, the metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals is recovered as a metal precursor feed, which can be recycled for use in the co-precipitation reaction. An effluent stream from the process to waste treatment contains less than 50 ppm metal ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.