CA2209954A1 - Cyclone separator - Google Patents
Cyclone separatorInfo
- Publication number
- CA2209954A1 CA2209954A1 CA 2209954 CA2209954A CA2209954A1 CA 2209954 A1 CA2209954 A1 CA 2209954A1 CA 2209954 CA2209954 CA 2209954 CA 2209954 A CA2209954 A CA 2209954A CA 2209954 A1 CA2209954 A1 CA 2209954A1
- Authority
- CA
- Canada
- Prior art keywords
- aperture
- chamber
- oil
- cyclone separator
- wall
- 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.)
- Abandoned
Links
- 238000000926 separation method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 7
- 235000019198 oils Nutrition 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 239000000470 constituent Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- LFVLUOAHQIVABZ-UHFFFAOYSA-N Iodofenphos Chemical compound COP(=S)(OC)OC1=CC(Cl)=C(I)C=C1Cl LFVLUOAHQIVABZ-UHFFFAOYSA-N 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
Landscapes
- Cyclones (AREA)
Abstract
A cyclone (2) comprises a first and second chambers (14, 16) separated by a wall (18) having an aperture (20). Frusto-conical directing means (34) is provided for guiding a fluid within the first chamber (14) towards the aperture (20).
Description
CYCLONE SEPARATOR
This invention relates to a cyclone separator of the type used to separate a mixture cornprising a fluid of a first density and fluid of a second density, for example, oil and water.
The separation of a mixture of fluids, ~or example oil and water, into its individual constituents is a~hieved in a kno\~vn type of hydrocyclone by the generation of a vortex in the mixture within the hydrocyclone effecting centrifugal separation of the mixture so as to produce an "oil-core". The separated oil and water are collected individually at respecti~e output ports. However, it has been found that transfer of the oil frorn the oil-core to the oil output port ~ay be less than optimurn, especially when the hydrocyclone is operating at low ~low/pressu~e with consequent reduction in centrifugal for~es in the mixture.
According to a first aspect of the present invention, there is provided a cyclone separator comprising a first chamber within which a separation vo~tex is generated in use, said chamber having ~n end wall, an aperture in s~id end wall, and, directin~ means tapering inwardly from said ch~rnber towards said aperture for guiding a core of said vortex within the first chamber to~vards the aperture.
Desirably said wall defines said directing rneans.
Conveniently said directing means substantially surrounds said aperture.
Preferably said directing means is a frusturn of a cone defined by saidwall with said aperture at its apical region The invention will now be described, in more de~ail, vvith re~erence tothe accompanying drawings, in which:
Figure 1 shows a cross-section~l view of a hydrocyclone according to anembodimen~ of the present invention; and Figure 2 shows a part of Figure 1 in more detail.
The hydrocyclone 2 of Figure 1 comprises a tapering tube element 4 having a water output port 10 at its narro~er end and an opposite end portion 6 having one or more, desirably tangential, input ports 8, and an oil output port 12.
Re~erring to Figure 2, the end portion 6 comprises a first chamber 14 defined in part by the tapering outer wall 26 of the tapering element 4.
The mixture inlet ports 8 are disposed in the wall 26 of the chamber 14 so as to be in fluid cornmunication therewith and the portion 6 further includes a second chamber 16, and a dividing wall 18 separatin~ the first and second chambers 14, 16. The dividing wall 18 h~s an aperture 20 located centrally therein and providing access from the chamber 14 to the charnber 16, the chamber 16 including the oil outlet port 12.
The dividing wall 18 has a main, annular portion 28 of frusto-conical shape v-~hich extends into the chamber 14 and tapers inwardly, having a gener~trix inclined at an angle to ~ plane P which is perpendicular to a central axis A of the hydrocyclone 2. The central portion 34 of the dividing wall 18 is also of a frusto-conical shape which tapers inwardly, but the portion 34 extends in the opposite direction to the portion 28, towards the second chamber 16, and has the aperture 20 disposed at its apical region 36.
In use, an oil-water mixture is introdu~ed into the hydrocyclone 2 via the inlet ports 8 so that a vortex is cre~ted within the first charnber 14 and the tube elernent 4 The individual constituents, i.e. the oil and the water are separated, the ~ater component residing at the periphery of the vortex and the oil component residing at the core of the vortex (known as an "oil-core").
The pressure balance within the hydrocyclone creates a b~ck pressure providing the oil-core with an axial velocity tow~rds the dividing wall 18. The inwardly tapering portion 34 of the wall 18 directs the peripheral portion of thç oil-core towards the aperture 20 thereby minimising loss of transfer of the oil core from the first chamber to the oil output port 12 in low inlet flow and pressure operating conditions.
The oil channelled from the oil-core to~vards the aperture 20 by the portion 34 passes through the aperture 20 into the second chamber 16 and leaves the hydrocyclone 2 via the oil output port 12.
The water at the periphery of the vortex travels along the tube element 4 towards the water output port 10.
Although the above examples have been described in the context o~ the dividing ~all 18 ha~in~ the main portion ~8 of frusto-conical shape, it i5 not intended ~hat the invention be limited to s~ch a ~onfiguration, other configur~tions bein~ possible. For example, the main portion 28 can be fo~med so as to have a flat or bulged shape. Similarly, the portion 34 may h~ve a shape other than a frusto-conical configuration provided that it possesses a sh~pe having an opening wider th~n the ~idest expected "core" in use and capable of collecting and guiding fluid inwardly tow~rds the aperture 20, for exarnple a curved, dished shape.
Additionally, although the above examples have been described in the context of an oil-water rnixture, it is not intended that the invention be limited to such a mixture and the use of other rnixtures is envis~ged, for example water/gas or powder/water. In this respect, it is not intended that the definition of tlle term fluid be limited to liquids and gasses alone, but instead to include powders or solids suspended in liquids or gases
This invention relates to a cyclone separator of the type used to separate a mixture cornprising a fluid of a first density and fluid of a second density, for example, oil and water.
The separation of a mixture of fluids, ~or example oil and water, into its individual constituents is a~hieved in a kno\~vn type of hydrocyclone by the generation of a vortex in the mixture within the hydrocyclone effecting centrifugal separation of the mixture so as to produce an "oil-core". The separated oil and water are collected individually at respecti~e output ports. However, it has been found that transfer of the oil frorn the oil-core to the oil output port ~ay be less than optimurn, especially when the hydrocyclone is operating at low ~low/pressu~e with consequent reduction in centrifugal for~es in the mixture.
According to a first aspect of the present invention, there is provided a cyclone separator comprising a first chamber within which a separation vo~tex is generated in use, said chamber having ~n end wall, an aperture in s~id end wall, and, directin~ means tapering inwardly from said ch~rnber towards said aperture for guiding a core of said vortex within the first chamber to~vards the aperture.
Desirably said wall defines said directing rneans.
Conveniently said directing means substantially surrounds said aperture.
Preferably said directing means is a frusturn of a cone defined by saidwall with said aperture at its apical region The invention will now be described, in more de~ail, vvith re~erence tothe accompanying drawings, in which:
Figure 1 shows a cross-section~l view of a hydrocyclone according to anembodimen~ of the present invention; and Figure 2 shows a part of Figure 1 in more detail.
The hydrocyclone 2 of Figure 1 comprises a tapering tube element 4 having a water output port 10 at its narro~er end and an opposite end portion 6 having one or more, desirably tangential, input ports 8, and an oil output port 12.
Re~erring to Figure 2, the end portion 6 comprises a first chamber 14 defined in part by the tapering outer wall 26 of the tapering element 4.
The mixture inlet ports 8 are disposed in the wall 26 of the chamber 14 so as to be in fluid cornmunication therewith and the portion 6 further includes a second chamber 16, and a dividing wall 18 separatin~ the first and second chambers 14, 16. The dividing wall 18 h~s an aperture 20 located centrally therein and providing access from the chamber 14 to the charnber 16, the chamber 16 including the oil outlet port 12.
The dividing wall 18 has a main, annular portion 28 of frusto-conical shape v-~hich extends into the chamber 14 and tapers inwardly, having a gener~trix inclined at an angle to ~ plane P which is perpendicular to a central axis A of the hydrocyclone 2. The central portion 34 of the dividing wall 18 is also of a frusto-conical shape which tapers inwardly, but the portion 34 extends in the opposite direction to the portion 28, towards the second chamber 16, and has the aperture 20 disposed at its apical region 36.
In use, an oil-water mixture is introdu~ed into the hydrocyclone 2 via the inlet ports 8 so that a vortex is cre~ted within the first charnber 14 and the tube elernent 4 The individual constituents, i.e. the oil and the water are separated, the ~ater component residing at the periphery of the vortex and the oil component residing at the core of the vortex (known as an "oil-core").
The pressure balance within the hydrocyclone creates a b~ck pressure providing the oil-core with an axial velocity tow~rds the dividing wall 18. The inwardly tapering portion 34 of the wall 18 directs the peripheral portion of thç oil-core towards the aperture 20 thereby minimising loss of transfer of the oil core from the first chamber to the oil output port 12 in low inlet flow and pressure operating conditions.
The oil channelled from the oil-core to~vards the aperture 20 by the portion 34 passes through the aperture 20 into the second chamber 16 and leaves the hydrocyclone 2 via the oil output port 12.
The water at the periphery of the vortex travels along the tube element 4 towards the water output port 10.
Although the above examples have been described in the context o~ the dividing ~all 18 ha~in~ the main portion ~8 of frusto-conical shape, it i5 not intended ~hat the invention be limited to s~ch a ~onfiguration, other configur~tions bein~ possible. For example, the main portion 28 can be fo~med so as to have a flat or bulged shape. Similarly, the portion 34 may h~ve a shape other than a frusto-conical configuration provided that it possesses a sh~pe having an opening wider th~n the ~idest expected "core" in use and capable of collecting and guiding fluid inwardly tow~rds the aperture 20, for exarnple a curved, dished shape.
Additionally, although the above examples have been described in the context of an oil-water rnixture, it is not intended that the invention be limited to such a mixture and the use of other rnixtures is envis~ged, for example water/gas or powder/water. In this respect, it is not intended that the definition of tlle term fluid be limited to liquids and gasses alone, but instead to include powders or solids suspended in liquids or gases
Claims (4)
1. A cyclone separator comprising a first chamber (14) within which a separation vortex is generated in use, said chamber having an end wall (18), an aperture (20) in said end wall, and the cyclone being characterised by directing means (34) tapering inwardly from said chamber (14) towards said aperture (20) for guiding a core of said vortex within the first chamber towards the aperture.
2. A cyclone separator as claimed in Claim 1, characterised in that said wall (18) defines said directing means (34).
3. A cyclone separator as claimed in Claim 1 or claim 2, characterised in that said directing means (34) substantially surrounds said aperture (20).
4. A cyclone separator as claimed in any one of Claims 1 to 3, characterised in that said directing means (34) is a frustum of a cone defined by said wall (18) with said aperture (20) at its apical region.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9614258.3A GB9614258D0 (en) | 1996-07-06 | 1996-07-06 | A cyclone |
| GB9614258.3 | 1996-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2209954A1 true CA2209954A1 (en) | 1998-01-06 |
Family
ID=10796506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2209954 Abandoned CA2209954A1 (en) | 1996-07-06 | 1997-07-04 | Cyclone separator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0815944A3 (en) |
| CA (1) | CA2209954A1 (en) |
| GB (1) | GB9614258D0 (en) |
| NO (1) | NO973130L (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB260776A (en) * | 1925-11-05 | 1926-11-11 | Wilfred Rothery Wood | Improvements in cyclone separators or driers |
| DE1274081B (en) * | 1958-08-22 | 1968-08-01 | Siemens Ag | Rotary flow vortex for separating media of different densities |
| FR2690089B1 (en) * | 1992-04-15 | 1994-10-21 | Elf Aquitaine | Three-phase cyclone separator. |
| DE9412631U1 (en) * | 1994-08-05 | 1994-10-13 | Ltg Lufttechnische Gmbh, 70435 Stuttgart | cyclone |
-
1996
- 1996-07-06 GB GBGB9614258.3A patent/GB9614258D0/en active Pending
-
1997
- 1997-07-03 EP EP97304879A patent/EP0815944A3/en not_active Withdrawn
- 1997-07-04 NO NO973130A patent/NO973130L/en unknown
- 1997-07-04 CA CA 2209954 patent/CA2209954A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| NO973130D0 (en) | 1997-07-04 |
| EP0815944A3 (en) | 1998-11-18 |
| EP0815944A2 (en) | 1998-01-07 |
| GB9614258D0 (en) | 1996-09-04 |
| NO973130L (en) | 1998-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |