Safe unloading and disposal of ionic liquid catalyst contaminated spent solids
US10052510B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Apr 12, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Processes for shutting down a regeneration reactor and for removing spent solid from the regeneration reactor may comprise shutting off a feed comprising an ionic liquid to the regeneration reactor, cooling the regeneration reactor, removing at least a portion of the ionic liquid from the regeneration reactor, purging the regeneration reactor with N2 gas, introducing water into the regeneration reactor to form an acidic liquid in the regeneration reactor, and dumping the acidic liquid and the spent solid from the regeneration reactor. The acidic liquid may be neutralized with a basic liquid to provide a neutralized liquid. The spent solid may be separated from the neutralized liquid. In an embodiment, noble metal(s) may be recovered from the spent solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.