Flocculants and methods for recovering bitumen from oil sands
US-2015353836-A1 · Dec 10, 2015 · US
Recovery of hydrocarbon diluent from froth treatment tailings
US2022204862A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022204862-A1 |
| Application number | US-202217580883-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 21, 2022 |
| Priority date | Sep 11, 2019 |
| Publication date | Jun 30, 2022 |
| Grant date | — |
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Abstract
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A method for recovering hydrocarbon diluent present in froth treatment tailings, comprising introducing the tailings into a vessel; adding a first portion of steam into the vessel to form a vapour-tailings interface; and operating the vessel to increase the exposure of the tailings to the vapour-tailings interface formed in the vessel.
First claim
Opening claim text (preview).
1 .- 12 . (canceled) 13 . A method for recovering hydrocarbon diluent present in froth treatment tailings, comprising adding a first portion of steam into the froth treatment tailings to form a tailings/steam mixture; tangentially introducing the tailings/steam mixture into a conical vessel having a conical internal wall and a conical vessel bottom to create a rotational motion of the tailings/steam mixture; operating the conical vessel such that the tailings/steam mixture forms a thin layer on the conical internal wall, thereby increasing the exposure of the tailings to the vapour-tailings interface formed in the vessel. 14 . The method of claim 13 , wherein the pressure of the first portion of steam is 50 psig or higher. 15 . The method of claim 13 , wherein a second portion of steam is added at or near the conical vessel bottom to provide additional heat to the tailings/steam mixture. 16 . The method of claim 13 , wherein the hydrocarbon diluent that has been stripped by the steam moves upwards through the vessel center and exits through a conduit for hydrocarbon diluent recovery by condensation and decantation to separate the hydrocarbon from water. 17 . The method of claim 13 , wherein the hydrocarbon diluent depleted tailings are removed from the conical vessel via a bottom conduit and conveyed to a tailings pond. 18 . The method of claim 13 , wherein a portion of the hydrocarbon diluent depleted tailings are removed from the conical vessel via a bottom conduit and tangentially reintroduced into the conical vessel. 19 . The method of claim 13 , wherein the outside of the conical vessel is heated by means of an external heating device.
Assignees
Inventors
Classifications
Sprayers (in general B05B) · CPC title
Steam distillation · CPC title
Steam · CPC title
- C10G1/045Primary
Separation of insoluble materials · CPC title
Fractionating columns with surface contact and vertical guides, e.g. film action · CPC title
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- What does patent US2022204862A1 cover?
- A method for recovering hydrocarbon diluent present in froth treatment tailings, comprising introducing the tailings into a vessel; adding a first portion of steam into the vessel to form a vapour-tailings interface; and operating the vessel to increase the exposure of the tailings to the vapour-tailings interface formed in the vessel.
- Who is the assignee on this patent?
- Syncrude Canada Ltd
- What technology area does this patent fall under?
- Primary CPC classification C10G1/045. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jun 30 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).