Process for the treatment of refinery purge streams
US10865347B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2016 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Dec 21, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G31/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the treatment of refinery purge streams, containing a hydrocarbon component in slurry phase having a boiling point higher than or equal to 140° C., characterized by the presence of quantities of asphaltenes higher than or equal to 5% by weight and characterized by the presence of a solid content higher than or equal to 5% by weight. The process provides that said purge be mixed with a suitable fluxing agent according to appropriate ratios and under certain conditions, forming a suspension with a content higher than or equal to 10% by weight of compounds having a boiling point TbP lower than or equal to 350° C. After mixing, the suspension is sent to a liquid/solid separation step which operates under suitable conditions, separating a solid phase containing a residual organic component and a solid component, called cake, and a liquid phase containing residual solids. The solid phase obtained is cooled to below 60° C., including the upper extreme, forming a granular solid which is stored and maintained at a temperature lower than or equal to 60° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.