EP0240486A4 - Separateur a cyclone. - Google Patents
Separateur a cyclone.Info
- Publication number
- EP0240486A4 EP0240486A4 EP19850903647 EP85903647A EP0240486A4 EP 0240486 A4 EP0240486 A4 EP 0240486A4 EP 19850903647 EP19850903647 EP 19850903647 EP 85903647 A EP85903647 A EP 85903647A EP 0240486 A4 EP0240486 A4 EP 0240486A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- separating chamber
- vector
- location
- tract
- inlet
- 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
- 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
- B04C5/08—Vortex chamber constructions
- B04C5/081—Shapes or dimensions
-
- 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
- B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
- B04C5/04—Tangential inlets
Definitions
- This invention relates to a cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator being of a kind having an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, wherein in use the denser component is directed to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet.
- a cyclone separator as above described is characterized in that said inlet means is defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, and the or each said tract being of a profiled configuration.
- a particular form of profile in accordance with the invention is substantially involute form arranged to admit the fluid in a spiral path.
- the or each inlet tract presents inner and outer profiles, when viewed axially of the separator. The outer profile extends from a first location at which it meets the circumference of the aforementioned portion of the separating chamber.
- the outer profile is more important that the inner 'profile.
- the inner profile is characterised by a second vector U, describing the location of any particular point on the inner profile and having its point of origin at said second location is such that as the magnitude of vector U increases, an angle between vector U and that tangent to said circumference which passes through said second location never decreases substantially and never becomes less than negative 0.52 radian at least for substantial magnitudes of vector U.
- the invention provides a cyclone separator as first above described wherein an end wall of the separating chamber, through which said overflow outlet communicates with the separating chamber, is formed of curved configuration such as being concave or convex when viewed.in axial section.
- the invention provides a cyclone separator as first above described wherein the overflow outlet is in the form of a duct which extends through an end wall of the separating chamber and projects into the separating chamber.
- Figure 1 is a cross-sectional diagram of a separator constructed in accordance with the invention.
- Figure 2 is a cross-section substantially on the line 2-2 in Figure 1;
- Figures 3 and 4 illustrate alternative forms of an end wall of the separating chamber of Figure 1; 6/04271
- Figure 5 shows an alternative form of the overflow outlet for the separator of Figure 1;
- Figure 6 is a detailed axial cross-sectional view of the inlet means of a separator constructed in accordance with the invention.
- Figure 7 is a diagram like Figure 6 but showing preferred inlet tract profiles.
- FIG 8 is a fragmentary axial diagram of a modified inlet tract.
- the separator 10 comprises a separating chamber 12 having three coaxially arranged separating chamber portions 1.4, 16,. 18 of cylindrical configuration. These are of diameters and lengths d-, 1,; d 2 , 1_; and d 3 , 1 3 respectively.
- Portion 14 is of greater diameter than portion 16 and portion 18 is of lesser diameter than portion 16.
- a flow restricting means (not shown) may be provided at the outlet from the cylindrical portion 18 but in this instance the outlet end is shown as being provided by an underflow outlet 24 from cylindrical portion 18.
- a tapered section 17 may be provided between portions 14 and 16.
- the portion 16 shown exhibits a first section of parallel sided form followed by a tapered section, in practice, it is possible to form portion 16 as having a constant taper over its length.
- An involute inlet pipe 20 is provided to the separating chamber portion 14, this opening into a side wall of the separating chamber at an inlet opening 23.
- An overflow outlet 25 is -provided on the axis of the separating chamber portion 14, this leading to an axial overflow pipe 27.
- the involute inlet pipe 20 spirals around the periphery of the separating chamber portion 14 and exhibits a gradually decreasing cross-sectional area as it approaches the opening 23.
- the pipe 20 and opening 23 may be of rectangular cross-section.
- the separator 10 functions generally in accordance with past practice in that the fluid mixture admitted into the separating chamber via the inlet pipe 20 is subjected to centrifugal action causing the separated liquid components to be ejected, on the one hand from the outlet 24 and on the other through the outlet 25.
- the denser phase material flows to the underflow outlet 24 in an annular cross-sectioned flow around the wall of the separating chamber whilst the lighter phase forms a central core 40 which is subjected to differential pressure action driving the fluid therein out the overflow outlet 25.
- the separating chamber 12 may be constructed somewhat in accordance with the teachings of Australian patent specification 47105/79 the disclosures of which are hereby incorporated into the present specification to form part thereof. In specification 47105/79, the separating chamber is described as having the following dimensional relationships:
- the ratio ⁇ /diere may be in the range 1.5 to 3.0, such as 2.0.
- the inlet means of the separator is shown as comprising an inlet tract 80 together with a portion of the separating chamber of the separator which is lengthwise adjacent thereto.
- the separator shown in Figure 1 is described as having three distinct portions of successively decreasing diameters, it is not essential that the separator be so formed as it could, for example, exhibit any generally tapered configuration extending from a larger diameter end adjacent the overflow outlet to a smaller cross-section end adjacent the underflow outlet.
- the tract 80 is shown as having an outer profile 82 and an inner profile. 84.
- the points 83, 87 on the outer and inner profiles aligned with location 85 are points where, if the profiles were projected outwardly therefrom in parallel relationship the separator would operate substantially the same as if the profiles were continued in the profiled configurations defined in accordance with this invention.
- outwardly projected is meant a projection from the respective profile which is substantially tangential at the point of meeting the respective profile.
- the profiles extend in spiral fashion inwardly to meet the circumferential surface 86 of the separating chamber.
- Locations at which the profiles so meet circumference 86 are designated respectively by letters "C” and "E". Practically, although the profile 84 is shown as joining circumference 86 by continuance of the profile inwardly until it meets the circumference
- the outer profile 82 is such that vector T describing the location of any particular point on outer profile and contained in a plane normal to said axis, and having its origin at location "C", is such that as the magnitude of the vector T increases, an angle 0 between the vector T and a tangent 92 to circumference 86 passing through said location "C" never decreases substantially and never becomes less than negative 0.1 radian for all magnitudes of T less than
- a vector U describing the location of any particular point on the inner profile 84 and having its point of origin at location "E” is such that as the magnitude of vector U increases, the angle o between vector U and a tangent 93 to said circumference which passes through said location "E” never decreases and never becomes less than negative 0.52 radian, for all magnitude of vector U less than o D, at least for substantial magnitudes of vector U.
- substantial magnitude of vector U we mean that in the vicinity of the location "E", vector U may not be defined because of possible rounding of the 'inner profile as previously described.
- d represents the underflow outlet diameter corresponding to diameter d, in Figure 1.
- the angle P measured about the axis of the separator between the points "C" and “E” was 86°.
- the inner profile 84 was terminated by a curved portion 84a co-joining with circumference 86, this portion had a curvature of approximately 0.5mm and located some 110° around the axis of the separator from the point "C M .
- W will be greater than t.
- Figure 8 shows a further modification of the separator in accordance with the invention where the inlet tract 80 is shown as extending with its mean flow path 93 for liquid flowing therein as being at an angle to the axis 95 of the separator rather than being normal thereto as illustrated in Figure 1.
- the axis 93 of tract 80 makes an angle to axis in the range
- tract is of rectangular cross-section it is preferred that it be of such rectangular cross-section at least over a length q where q is less than c
- the described separator inlet configuration may readily be employed where more than one tract 80 is provided.
- ⁇ tn x Wn Al. , where tn and Wn are t.,he wi•d_>t. ⁇ h.
- the described separator has been found to provide excellent operating characteristics when separating smaller quantities of oil from larger quantities of water.
- Figure 3 shows a modification of the separator of
- FIG. 1 the end wall 50 of the separating chamber portion 14, adjacent overflow outlet 25, is formed of concave form.
- the end wall 50 is shown in a further modification as exhibiting a convex form when viewed in axial section.
- Figure 5 shows a still further modification where the overflow inlet 25 is formed from a pipe 27 having a portion 27a which extends through wall 50 (in this case, shown as being linear in axial section) and into the separating chamber
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Cyclones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85903647T ATE57315T1 (de) | 1985-01-22 | 1985-07-23 | Zyklonabscheider. |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000472531A CA1269952A (fr) | 1984-01-24 | 1985-01-22 | Separateur de type cyclone |
PH3175485 | 1985-01-22 | ||
PH3175485 | 1985-01-22 | ||
CA472531 | 1985-01-22 | ||
AU40909/85 | 1985-04-04 | ||
AU40909/85A AU4090985A (en) | 1985-04-04 | 1985-04-04 | Cyclone separator |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0240486A1 EP0240486A1 (fr) | 1987-10-14 |
EP0240486A4 true EP0240486A4 (fr) | 1988-03-21 |
EP0240486B1 EP0240486B1 (fr) | 1990-10-10 |
Family
ID=27154041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85903647A Expired EP0240486B1 (fr) | 1985-01-22 | 1985-07-23 | Separateur a cyclone |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0240486B1 (fr) |
BR (1) | BR8507311A (fr) |
DE (1) | DE3580112D1 (fr) |
DK (1) | DK164491C (fr) |
GB (1) | GB2191720B (fr) |
IT (1) | IT1212056B (fr) |
NL (1) | NL8520210A (fr) |
WO (1) | WO1986004271A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139652A (en) * | 1990-12-31 | 1992-08-18 | A. Ahlstrom Corporation | Centrifugal cleaner |
FR2788453B1 (fr) * | 1999-01-18 | 2001-02-23 | Alstom | Gaine d'entree de fumees dans un separateur cyclone |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306461A (en) * | 1964-08-18 | 1967-02-28 | Int Minerals & Chem Corp | Hydrocyclone |
US3850816A (en) * | 1970-07-31 | 1974-11-26 | Siemens Ag | Cyclone |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB315007A (en) * | 1928-01-05 | 1929-07-05 | Thomas Morgan Barlow | Improvements in or relating to steam separators |
DE681033C (de) * | 1937-06-29 | 1939-09-13 | Theodor Froehlich A G | Fliehkraftstaubabscheider |
GB535886A (en) * | 1940-06-28 | 1941-04-24 | Buell Comb Company Ltd | Improvements in cyclone dust separators |
DE1090940B (de) * | 1954-07-30 | 1960-10-13 | Reinhold Kamps Dipl Ing Dr | Fliehkraftstaubabscheider mit einem oder mehreren in einem Gehaeuse angeordneten Zyklonen, insbesondere fuer Krackanlagen |
US3091334A (en) * | 1959-07-20 | 1963-05-28 | Denver Equip Co | Centrifugal separation method and means |
CH385170A (de) * | 1960-07-06 | 1964-12-15 | Fetzer Erich Dipl Ing | Verfahren zum Aufbereiten von Flüssigkeiten und Hydrozyklon zur Durchführung dieses Verfahrens |
HU165483B (fr) * | 1970-12-04 | 1974-09-28 | ||
US3745752A (en) * | 1970-12-30 | 1973-07-17 | Envirotech Corp | Fluid inlet structure for cyclone collectors |
US3953184A (en) * | 1974-09-18 | 1976-04-27 | Stockford William F | Cyclone-type dust separator |
SU827181A1 (ru) * | 1979-01-03 | 1981-05-07 | Makhortov Anatolij V | Циклон дл очистки потока газа отпыли |
-
1985
- 1985-07-23 IT IT8548392A patent/IT1212056B/it active
- 1985-07-23 NL NL8520210A patent/NL8520210A/nl unknown
- 1985-07-23 GB GB8716797A patent/GB2191720B/en not_active Expired
- 1985-07-23 EP EP85903647A patent/EP0240486B1/fr not_active Expired
- 1985-07-23 WO PCT/AU1985/000166 patent/WO1986004271A1/fr active IP Right Grant
- 1985-07-23 DE DE8585903647T patent/DE3580112D1/de not_active Expired - Lifetime
- 1985-07-23 BR BR8507311A patent/BR8507311A/pt not_active IP Right Cessation
-
1986
- 1986-09-19 DK DK448886A patent/DK164491C/da active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306461A (en) * | 1964-08-18 | 1967-02-28 | Int Minerals & Chem Corp | Hydrocyclone |
US3850816A (en) * | 1970-07-31 | 1974-11-26 | Siemens Ag | Cyclone |
Non-Patent Citations (1)
Title |
---|
See also references of WO8604271A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0240486A1 (fr) | 1987-10-14 |
WO1986004271A1 (fr) | 1986-07-31 |
BR8507311A (pt) | 1987-12-01 |
DK448886A (da) | 1986-09-19 |
DK448886D0 (da) | 1986-09-19 |
EP0240486B1 (fr) | 1990-10-10 |
DK164491B (da) | 1992-07-06 |
DE3580112D1 (de) | 1990-11-15 |
IT1212056B (it) | 1989-11-08 |
GB8716797D0 (en) | 1987-08-19 |
GB2191720A (en) | 1987-12-23 |
IT8548392A0 (it) | 1985-07-23 |
NL8520210A (nl) | 1987-10-01 |
DK164491C (da) | 1992-11-23 |
GB2191720B (en) | 1989-06-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4710299A (en) | Cyclone separator | |
WO1989004726A1 (fr) | Separateur a cyclone | |
AU612561B2 (en) | Cyclone separator | |
WO1987005234A1 (fr) | Separateur a cyclone | |
US5108608A (en) | Cyclone separator with multiple outlets and recycling line means | |
WO1989007490A1 (fr) | Separation de liquides | |
EP1204482B1 (fr) | Hydrocyclone | |
US5049277A (en) | Cyclone separator | |
GB2263652A (en) | Hydrocyclone | |
EP0203065B1 (fr) | Separateur cyclonique | |
US9931642B2 (en) | Separator fluid collector having a plurality of cutouts | |
EP0240486A4 (fr) | Separateur a cyclone. | |
US4976872A (en) | Cyclone separator | |
AU620437B2 (en) | Cyclone separator | |
WO1989009653A1 (fr) | Separateur cyclone | |
JPS62501685A (ja) | サイクロン分離器 | |
JPH0236624Y2 (fr) | ||
RU1831366C (ru) | Газожидкостный сепаратор | |
WO1989002785A1 (fr) | Separateur a cyclone dote d'une partie aval courbee | |
EP0843596A1 (fr) | Hydrocyclone | |
JPS62294456A (ja) | サイクロン分離器 | |
NO172629B (no) | Syklonseparator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19870721 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR IT LI LU NL SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19880321 |
|
17Q | First examination report despatched |
Effective date: 19880712 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONOCO SPECIALTY PRODUCTS INC. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19901010 Ref country code: LI Effective date: 19901010 Ref country code: CH Effective date: 19901010 Ref country code: AT Effective date: 19901010 |
|
REF | Corresponds to: |
Ref document number: 57315 Country of ref document: AT Date of ref document: 19901015 Kind code of ref document: T |
|
ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 3580112 Country of ref document: DE Date of ref document: 19901115 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19910731 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19920812 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19930706 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19930728 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19930731 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19930731 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19930922 |
|
BERE | Be: lapsed |
Owner name: CONOCO SPECIALTY PRODUCTS INC. Effective date: 19930731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19950201 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19950331 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |