Cracking process employing a combination of reductive and oxidative washes
US4163710A · kind A · utility
9Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1978 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Feb 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/516
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved catalytic cracking process wherein partial demetallization of a cracking catalyst is employed. The demetallization process involves contacting the catalyst with alternate reductive and oxidative aqueous washes. A preferred oxidative wash medium comprises an aqueous solution of hydrogen peroxide. The vanadium and nickel metals may be recovered from used wash solutions for metallurgical use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.