CA2512324A1 - Treatment of aqueous suspensions - Google Patents
Treatment of aqueous suspensions Download PDFInfo
- Publication number
- CA2512324A1 CA2512324A1 CA002512324A CA2512324A CA2512324A1 CA 2512324 A1 CA2512324 A1 CA 2512324A1 CA 002512324 A CA002512324 A CA 002512324A CA 2512324 A CA2512324 A CA 2512324A CA 2512324 A1 CA2512324 A1 CA 2512324A1
- Authority
- CA
- Canada
- Prior art keywords
- process according
- soluble polymer
- water
- liquor
- meth
- 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
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
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- 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
-
- 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
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1033—Oil well production fluids
Abstract
A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved whilst retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of aqueous solution of a water-soluble polymer. The process is particularly suitable for the treatment of the tailings underflow resulting oil sands processing operation and the co-disposal of fine and coarse tailings fractions. In addition, liquor released during the rigidification step is of high clarity.
Claims (28)
1. A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved whilst retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of an aqueous solution of a water-soluble polymer and, wherein the dispersed particulate solids are in all or in part oil sands tailings.
2. A process according to claim 1 in which the water soluble polymer has an intrinsic viscosity of at least 3 dl/g and is formed from ethylenically unsaturated water-soluble monomer or blend of monomers.
3. A process according to claim 1 or claim 2 in which the water soluble polymer is anionic.
4. A process according to claim 3 in which the polymer is formed from monomers) selected from the group consisting of (meth)acrylic acid, allyl sulphonic acid and 2-acrylamido-2-methyl propane sulphonic acid as the free acids or salts thereof, optionally in combination with non-ionic co-monomers, selected from the group consisting of (meth)acrylamide, hydroxy alkyl esters of (meth)acrylic acid and N-vinyl pyrrolidone.
5. A process according to claim 1 or claim 2 in which the water soluble polymer is non-ionic.
6. A process according to claim 5 in which the polymer is formed from monomers) selected from the group consisting of (meth) acrylamide, hydroxy alkyl esters of (meth) acrylic acid and N-vinyl pyrrolidone.
7. A process according to claim 1 or claim 2 in which the water soluble polymer is cationic.
8. A process according to claim 7 in which the polymer is formed from monomers) selected from the group consisting of dimethyl amino ethyl (meth) acrylate - methyl chloride, (DMAEA.MeCI) quat, diallyl dimethyl ammonium chloride (DADMAC), trimethyl amino propyl (meth) acrylamide chloride (ATPAC) optionally in combination with non-ionic co-monomers, selected from the group consisting of (meth) acrylamide, hydroxy alkyl esters of (meth) acrylic acid and N-vinyl pyrrolidone.
9. A process according to any of claims 1 to 8 in which the process comprises the disposal of oil sands tailings from an oil sands processing operation.
10. A process according to any of claims 1 to 9 in which the dispersed particulate solids have particle sizes less than 100 microns, in which preferably at least 80% of the particles have sizes less than 25 microns.
11. A process according to any of the claims 1 to 11 in which the dispersed particulate solids has a bimodal distribution of particle sizes comprising a fine fraction and a coarse fraction, in which the fine fraction peak is substantially less than 25 microns and the coarse fraction peak is substantially greater than 75 microns.
12. A process according to any of claims 1 to 11 in which the material has a solids content in the range 15% to 80% by weight, preferably in the range 40% or 50% to 70% by weight.
13. A process according to any of claims 1 to 12 comprising flocculating an aqueous suspension of solids in a vessel to form a supernatant layer comprising an aqueous liquor and an underflow layer comprising thickened solids forming the material, separating the supernatant layer from the underflow, wherein the underflow containing the particulate material flows from the vessel and, in which the material is then pumped to a deposition area where it is allowed to stand and rigidify, and wherein the effective rigidifying amount of the aqueous solution of the water-soluble polymer is mixed with the material after flocculating the suspension and before the material is allowed to stand.
14. A process according to claim 13 in which wet or dry coarse particles are added to the underflow from the vessel either before or during the addition of an effective rigidifying amount of the water soluble polymer.
15. A process according to claims 13 or 14 in which the material is transferred to a holding vessel prior to being pumped to the deposition area.
16. A process according to any of claims 1 to 15 in which the material is pumped to an outlet, where it is allowed to flow over the surface of previously rigidified material, wherein the material is allowed to stand and rigidify to form a stack.
17. A process according to any of claims 1 to 16 in which the effective rigidifying amount of the aqueous solution of the water-soluble polymer is mixed with the material prior to a pumping stage.
18. A process according to any of claims 1 to 16 in which the effective rigidifying amount of the aqueous solution of the water-soluble polymer is mixed with the material during or subsequent to a pumping stage.
19. A process according to any claims 1 to 16 in which the effective rigidifying amount of the aqueous solution of the water-soluble polymer is mixed with the material as it exits the outlet.
20. A process according to any of claims 1 to 19 in which the material is dewatered during rigidification, releasing liquor.
21. A process according to claim 20 in which the liquor is recycled to a oil sands processing operation.
22. A process according to claim 20 or claim 21 in which the clarity of the liquor is improved by the addition of an aqueous solution of water-soluble polymer.
23. A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a settling area, then allowed to dewater to release liquor, and in which dewatering is improved whilst retaining the fluidity of the material during transfer, by combining with the material an effective dewatering amount of aqueous solution of a water-soluble polymer and wherein the dispersed particles are in all or in part oil sands tailings.
24. A process according to claim 23 comprising flocculating an aqueous suspension of solids in a vessel to form a supernatant layer comprising an aqueous liquor and an underflow layer comprising thickened solids forming the material, separating the supernatant layer from the underflow, wherein the underflow containing the material flows from the vessel and in which the material is then pumped to a settling area where it is allowed to dewater, and wherein the effective dewatering amount of the aqueous solution of the water-soluble polymer is mixed with the material after flocculating the suspension and before the material is allowed to dewater.
25. A process according to claims 23 or 24 in which wet or dry coarse particles are added to the underflow from the vessel either before or during the addition of an effective dewatering amount of the water soluble polymer.
26. A process according to any claims 23 to 25 in which the liquor is recycled to an oil sands processing operation.
27. A process according to any claims 23 to 26 in which the clarity of the liquor is improved by the addition of aqueous solution of water-soluble polymer.
28. A process according to any claims 23 to 27 in which the liquor contains dissolved valuable materials and in which the liquor is subjected to further processing to reclaim or reuse the valuable materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2512324A CA2512324C (en) | 2005-07-18 | 2005-07-18 | Treatment of aqueous suspensions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2512324A CA2512324C (en) | 2005-07-18 | 2005-07-18 | Treatment of aqueous suspensions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2512324A1 true CA2512324A1 (en) | 2007-01-18 |
| CA2512324C CA2512324C (en) | 2015-11-24 |
Family
ID=37663418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2512324A Active CA2512324C (en) | 2005-07-18 | 2005-07-18 | Treatment of aqueous suspensions |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2512324C (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8137566B2 (en) | 2007-07-16 | 2012-03-20 | Rj Oil Sands Inc. | Recovery of tailings ponds |
| US9011972B2 (en) | 2008-10-29 | 2015-04-21 | E I Du Pont De Nemours And Company | Treatment of tailings streams |
| US9068776B2 (en) | 2009-10-30 | 2015-06-30 | Suncor Energy Inc. | Depositing and farming methods for drying oil sand mature fine tailings |
| US9206381B2 (en) | 2011-09-21 | 2015-12-08 | Ecolab Usa Inc. | Reduced misting alkaline cleaners using elongational viscosity modifiers |
| WO2016019213A1 (en) | 2014-07-31 | 2016-02-04 | Dow Global Technologies Llc | In-line dynamic mixing apparatus for flocculating and dewatering oil sands fine tailings |
| US9404686B2 (en) | 2009-09-15 | 2016-08-02 | Suncor Energy Inc. | Process for dying oil sand mature fine tailings |
| EP2571610A4 (en) * | 2010-05-20 | 2016-08-10 | Suncor Energy Inc | Method and device for in-line injection of flocculent agent into a fluid flow of mature fine tailings |
| US9637708B2 (en) | 2014-02-14 | 2017-05-02 | Ecolab Usa Inc. | Reduced misting and clinging chlorine-based hard surface cleaner |
| WO2018022352A1 (en) | 2016-07-25 | 2018-02-01 | Dow Global Technologies Llc | Acoustic mixing for flocculant addition to mineral suspensions |
| US9909070B2 (en) | 2009-09-15 | 2018-03-06 | Suncor Energy Inc. | Process for flocculating and dewatering oil sand mature fine tailings |
| WO2018057325A1 (en) | 2016-09-23 | 2018-03-29 | Dow Global Technologies Llc | Process for tailings remediation |
| WO2018063810A1 (en) | 2016-09-27 | 2018-04-05 | Dow Global Technologies Llc | Process for dewatering an aqueous process stream |
| US10370626B2 (en) | 2016-05-23 | 2019-08-06 | Ecolab Usa Inc. | Reduced misting acidic cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight water-in-oil emulsion polymers |
| US10392587B2 (en) | 2016-05-23 | 2019-08-27 | Ecolab Usa Inc. | Reduced misting alkaline and neutral cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight water-in-oil emulsion polymers |
| US11540512B2 (en) | 2017-03-01 | 2023-01-03 | Ecolab Usa Inc. | Reduced inhalation hazard sanitizers and disinfectants via high molecular weight polymers |
| US11834633B2 (en) | 2019-07-12 | 2023-12-05 | Ecolab Usa Inc. | Reduced mist alkaline cleaner via the use of alkali soluble emulsion polymers |
-
2005
- 2005-07-18 CA CA2512324A patent/CA2512324C/en active Active
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8137566B2 (en) | 2007-07-16 | 2012-03-20 | Rj Oil Sands Inc. | Recovery of tailings ponds |
| US9011972B2 (en) | 2008-10-29 | 2015-04-21 | E I Du Pont De Nemours And Company | Treatment of tailings streams |
| US9481799B2 (en) | 2008-10-29 | 2016-11-01 | The Chemours Company Fc, Llc | Treatment of tailings streams |
| EP3199218A1 (en) | 2009-09-15 | 2017-08-02 | Suncor Energy Inc. | Process for drying oil sand mature fine tailings |
| US10590347B2 (en) | 2009-09-15 | 2020-03-17 | Suncor Energy Inc. | Process for flocculating and dewatering oil sand mature fine tailings |
| US9909070B2 (en) | 2009-09-15 | 2018-03-06 | Suncor Energy Inc. | Process for flocculating and dewatering oil sand mature fine tailings |
| US9404686B2 (en) | 2009-09-15 | 2016-08-02 | Suncor Energy Inc. | Process for dying oil sand mature fine tailings |
| US9068776B2 (en) | 2009-10-30 | 2015-06-30 | Suncor Energy Inc. | Depositing and farming methods for drying oil sand mature fine tailings |
| EP2571610A4 (en) * | 2010-05-20 | 2016-08-10 | Suncor Energy Inc | Method and device for in-line injection of flocculent agent into a fluid flow of mature fine tailings |
| US9206381B2 (en) | 2011-09-21 | 2015-12-08 | Ecolab Usa Inc. | Reduced misting alkaline cleaners using elongational viscosity modifiers |
| US9637708B2 (en) | 2014-02-14 | 2017-05-02 | Ecolab Usa Inc. | Reduced misting and clinging chlorine-based hard surface cleaner |
| US11331696B2 (en) | 2014-02-14 | 2022-05-17 | Ecolab Usa Inc. | Reduced misting and clinging chlorine based hard surface cleaner |
| US10821484B2 (en) | 2014-02-14 | 2020-11-03 | Ecolab Usa Inc. | Reduced misting and clinging chlorine-based hard surface cleaner |
| US10220421B2 (en) | 2014-02-14 | 2019-03-05 | Ecolab Usa Inc. | Reduced misting and clinging chlorine-based hard surface cleaner |
| WO2016019213A1 (en) | 2014-07-31 | 2016-02-04 | Dow Global Technologies Llc | In-line dynamic mixing apparatus for flocculating and dewatering oil sands fine tailings |
| US10370626B2 (en) | 2016-05-23 | 2019-08-06 | Ecolab Usa Inc. | Reduced misting acidic cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight water-in-oil emulsion polymers |
| US10392587B2 (en) | 2016-05-23 | 2019-08-27 | Ecolab Usa Inc. | Reduced misting alkaline and neutral cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight water-in-oil emulsion polymers |
| US11008538B2 (en) | 2016-05-23 | 2021-05-18 | Ecolab Usa Inc. | Reduced misting alkaline and neutral cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight water-in-oil emulsion polymers |
| WO2018022352A1 (en) | 2016-07-25 | 2018-02-01 | Dow Global Technologies Llc | Acoustic mixing for flocculant addition to mineral suspensions |
| WO2018057325A1 (en) | 2016-09-23 | 2018-03-29 | Dow Global Technologies Llc | Process for tailings remediation |
| WO2018063810A1 (en) | 2016-09-27 | 2018-04-05 | Dow Global Technologies Llc | Process for dewatering an aqueous process stream |
| US11540512B2 (en) | 2017-03-01 | 2023-01-03 | Ecolab Usa Inc. | Reduced inhalation hazard sanitizers and disinfectants via high molecular weight polymers |
| US11834633B2 (en) | 2019-07-12 | 2023-12-05 | Ecolab Usa Inc. | Reduced mist alkaline cleaner via the use of alkali soluble emulsion polymers |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2512324C (en) | 2015-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |