High temperature froth underwash in an oil sand bitumen extraction separation vessel
US9051518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Aug 17, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85938
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for enhancing the froth quality, improving vessel operability and increasing the froth temperature from an oil sand slurry in a primary separation vessel is provided, comprising introducing the oil sand slurry into a separation vessel; retaining the oil sand slurry within the separation vessel so that separate layers of bitumen froth, middlings and sand tailings are formed; introducing sufficient heated water having a temperature greater than about 80° C. as an evenly distributed underwash layer beneath the bitumen froth layer; and separately removing the bitumen froth, middlings and sand tailings from the separation vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.