CA2577743A1 - Enhanced bitumen flotation - Google Patents
Enhanced bitumen flotation Download PDFInfo
- Publication number
- CA2577743A1 CA2577743A1 CA 2577743 CA2577743A CA2577743A1 CA 2577743 A1 CA2577743 A1 CA 2577743A1 CA 2577743 CA2577743 CA 2577743 CA 2577743 A CA2577743 A CA 2577743A CA 2577743 A1 CA2577743 A1 CA 2577743A1
- Authority
- CA
- Canada
- Prior art keywords
- middlings
- downpipe
- bitumen
- stream
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
- C10G1/045—Separation of insoluble materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A method and apparatus for recovering bitumen as froth from a feed stream having solids, water and bitumen is provided using a separating vessel having mounted thereon a downpipe assembly, the downpipe assembly having at least one downpipe and a nozzle in fluid communication with each downpipe, for aerating a stream of middlings withdrawn from the separating vessel and reintroducing the aerated middlings back to the separating vessel.
Claims (9)
1. A method for continuously recovering bitumen as froth from a feed stream having solids, water and bitumen, comprising:
(a) delivering the feed stream into a separating vessel through a feedwell and allowing the feed stream to separate into an upper bitumen-rich zone, a middlings zone and a lower concentrated solids zone;
(b) providing a downpipe assembly comprising at least one downpipe having an upper end and an open lower end, said downpipe assembly mounted to the separation vessel such that each downpipe extends substantially vertically into the separation vessel and the open lower end of each downpipe extends below the bitumen-rich zone;
(c) removing a stream of middlings from the middlings zone of the separation vessel and introducing the middlings stream into a nozzle positioned at or near the upper end of each downpipe and in fluid communication with the downpipe to form a jet of middlings;
(d) introducing air into the middlings stream to produce aerated middlings and allowing the aerated middlings to issue from the open lower end of each downpipe below the bitumen-rich zone of the separation vessel; and (e) continuously recovering the bitumen froth from the upper bitumen-rich zone and withdrawing the solids from the lower concentrated solids zone in the separation vessel.
(a) delivering the feed stream into a separating vessel through a feedwell and allowing the feed stream to separate into an upper bitumen-rich zone, a middlings zone and a lower concentrated solids zone;
(b) providing a downpipe assembly comprising at least one downpipe having an upper end and an open lower end, said downpipe assembly mounted to the separation vessel such that each downpipe extends substantially vertically into the separation vessel and the open lower end of each downpipe extends below the bitumen-rich zone;
(c) removing a stream of middlings from the middlings zone of the separation vessel and introducing the middlings stream into a nozzle positioned at or near the upper end of each downpipe and in fluid communication with the downpipe to form a jet of middlings;
(d) introducing air into the middlings stream to produce aerated middlings and allowing the aerated middlings to issue from the open lower end of each downpipe below the bitumen-rich zone of the separation vessel; and (e) continuously recovering the bitumen froth from the upper bitumen-rich zone and withdrawing the solids from the lower concentrated solids zone in the separation vessel.
2. The method as claimed in claim 1, wherein the air is introduced into the middlings through an opening at or near the upper end of the downpipe.
3. The method as claimed in claim 1, wherein the air is introduced into the middlings stream prior to introducing the middlings stream into the nozzle.
4. The method as claimed in claim 1, wherein the nozzle comprises an orifice having a diameter greater than about 3 inches but less than about 6 inches.
5. The method as claimed in claim 1, wherein the separating vessel is a primary separation vessel and the feed stream is diluted oil sand slurry.
6. The method as claimed in claim 1, wherein the separating vessel is a secondary separation vessel and the feed stream is PSV middlings or combined PSV
middlings and PSV
tailings.
middlings and PSV
tailings.
7. An apparatus for continuously recovering bitumen as froth from a feed stream having solids, water and bitumen, comprising:
(a) a separating vessel having a feedwell for receiving the feed stream, the separating vessel operative for separating the feed stream into an upper bitumen-rich zone, a middlings zone and a lower concentrated solids zone;
(b) a downpipe assembly comprising at least one downpipe having an upper end and an open lower end, said downpipe assembly mounted to the separation vessel such that each downpipe extends substantially vertically into the separation vessel and the open lower end of each downpipe extends below the bitumen-rich zone;
(c) a nozzle positioned at or near the upper end of each downpipe and in fluid communication with the downpipe;
(d) means for removing a stream of middlings from the middlings zone of the separating and introducing the stream of middlings into the nozzle; and (e) an air supply means for introducing air into the stream of middlings and producing aerated middlings.
(a) a separating vessel having a feedwell for receiving the feed stream, the separating vessel operative for separating the feed stream into an upper bitumen-rich zone, a middlings zone and a lower concentrated solids zone;
(b) a downpipe assembly comprising at least one downpipe having an upper end and an open lower end, said downpipe assembly mounted to the separation vessel such that each downpipe extends substantially vertically into the separation vessel and the open lower end of each downpipe extends below the bitumen-rich zone;
(c) a nozzle positioned at or near the upper end of each downpipe and in fluid communication with the downpipe;
(d) means for removing a stream of middlings from the middlings zone of the separating and introducing the stream of middlings into the nozzle; and (e) an air supply means for introducing air into the stream of middlings and producing aerated middlings.
8. The apparatus as claimed in claim 7, wherein the air supply means comprises an opening at or near the upper end of the downpipe.
9. The apparatus as claimed in claim 7, wherein the nozzle comprises an orifice having a diameter greater than about 3 inches but less than about 6 inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2577743A CA2577743C (en) | 2007-02-09 | 2007-02-09 | Enhanced bitumen flotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2577743A CA2577743C (en) | 2007-02-09 | 2007-02-09 | Enhanced bitumen flotation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2577743A1 true CA2577743A1 (en) | 2008-08-09 |
| CA2577743C CA2577743C (en) | 2011-04-19 |
Family
ID=39678542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2577743A Active CA2577743C (en) | 2007-02-09 | 2007-02-09 | Enhanced bitumen flotation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2577743C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112337655A (en) * | 2020-09-27 | 2021-02-09 | 中国矿业大学 | Three-product flotation column and method suitable for high-ash fine-fraction coal slime |
-
2007
- 2007-02-09 CA CA2577743A patent/CA2577743C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112337655A (en) * | 2020-09-27 | 2021-02-09 | 中国矿业大学 | Three-product flotation column and method suitable for high-ash fine-fraction coal slime |
| CN112337655B (en) * | 2020-09-27 | 2021-09-10 | 中国矿业大学 | Three-product flotation column and method suitable for high-ash fine-fraction coal slime |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2577743C (en) | 2011-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |