Feedwell dilution system for thickeners in oil sands
US7988865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2009 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Feb 4, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2221/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A feedwell dilution system for diluting an influent feed stream, which include at least one eductor assembly, and a feedwell assembly. The at least one eductor assembly includes a feed pipe which converges to a narrow throat portion or nozzle; a mix tube positioned downstream from the narrow throat portion that is sized and configured to provide mixing of the influent feed stream and a clarified liquid drawn from a settling tank; and an enclosure, which is installed around the narrow throat portion and an inlet portion of the mix tube and includes an open-ended portion on a bottom thereof, which is sized and configured to allow a clarified liquid to be pulled into the mix tube from below the inlet portion of the mix tube. The feedwell assembly is sized and configured to receive the mixture of the influent feed stream and the clarified liquid from the mix tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.