High temperature paraffinic froth treatment process
US10954448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2018 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Nov 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high temperature paraffinic froth treatment (HTPFT) process utilizes an unheated flash vessel as a first stage of solvent recovery in a paraffinic solvent recovery unit (PSRU) to minimize asphaltene precipitation and fouling in subsequent stages of solvent recovery. The HTPFT may utilize a heat pump circuit for heat integration in the PSRU where a first stage of solvent recovery is at a lower temperature than a second stage of solvent recovery. Froth entering froth separation vessels can be heated using heat in a tailings stream using a heat pump. Froth separation vessels used to separate froth for collecting a bitumen-containing overflow utilize a collector pot and conventional feedwell combination, or a combination of a collection ring and nozzle arrangement for reducing disturbance in the vessel and improving collection of the overflow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.