WO2019191803A1 - Hydrocyclone - Google Patents
Hydrocyclone Download PDFInfo
- Publication number
- WO2019191803A1 WO2019191803A1 PCT/AU2019/050287 AU2019050287W WO2019191803A1 WO 2019191803 A1 WO2019191803 A1 WO 2019191803A1 AU 2019050287 W AU2019050287 W AU 2019050287W WO 2019191803 A1 WO2019191803 A1 WO 2019191803A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrocyclone
- cylindrical chamber
- chamber
- accordance
- inlet
- Prior art date
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
- B04C5/02—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
-
- 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
- B04C5/08—Vortex chamber constructions
- B04C5/085—Vortex chamber constructions with wear-resisting arrangements
Definitions
- the invention relates to a cyclonic separation system and, in particular, a hydrocyclone having two or more inlets.
- Cyclonic separators such as hydrocyclones, are used to separate heavy/large particles from lighter/smaller particles
- Hydrocyclones are useful in mining and quarrying applications and are typically of value in the coal cleaning industry where the heavy ash-rich particles of raw coal can be separated from the lighter low ash particles.
- the hydrocyclone uses the fluid pressure from a slurry to create internal rotational movement within a cylindrical chamber. Centrally located outlets, located at the top and bottom, allow the liquid moving around the chamber in a helical path to leave the hydrocyclone.
- hydrocyclones use an aqueous slurry feed inlet stream introduced through a single feed conduit which is tangential to the cylindrical surface of the cylindrical chamber of the hydrocyclone.
- this results in the stream of slurry travelling along the same path within the chamber during each use whereby the stream eventually wears away that particular portion of the lining of the chamber.
- a desired objective of the dual feed inlet hydrocyclone is to provide more uniform wear of the inner wall of the apex cone of the hydrocyclone.
- the dual feed inlet hydrocyclone of the prior art having the separate feed conduits, presents serious installation, operating and maintenance problems.
- hydrocyclone comprising:
- a substantially cylindrical chamber having at least one opening;
- a substantially conical chamber in open fluid communication with the cylindrical chamber;
- the invention resides in a cylindrical chamber for a hydrocyclone comprising:
- hydrocyclone comprising:
- a substantially cylindrical chamber having two or more vertically arranged openings
- a substantially conical chamber in open fluid communication with the cylindrical chamber; a first outlet extending from the cylindrical chamber; and a second outlet extending from the conical chamber and located opposite the first outlet.
- the invention resides in a cylindrical chamber for a hydrocyclone comprising:
- a flow direction conduit extends from each inlet around a perimeter of the cylindrical chamber.
- the flow direction conduits are parallel.
- the flow direction conduits are sloped downwardly toward the conical chamber.
- the flow direction conduits extend to a base of the cylindrical chamber.
- the flow direction conduit comprises a sloping path extending from the inlet to the base of the cylindrical chamber.
- the cylindrical chamber is removably secured to the conical chamber.
- the cylindrical chamber is fixed to the conical chamber.
- the cylindrical chamber and the conical chamber are lined with an abrasion-resistant material.
- the abrasion-resistant material comprises one or more of an elastomeric material, a hard metal and a ceramic material.
- the cylindrical chamber has two or more openings.
- the openings are arranged vertically adjacent, wherein each opening is adjacent at least one other opening.
- each inlet is connected to a corresponding opening.
- each inlet has a substantially rectangular cross-section.
- a first end of each inlet has a substantially circular cross-section and a second opposing end of each inlet has a substantially rectangular cross-section.
- the cylindrical chamber comprises a flange for engaging a corresponding flange of the conical chamber.
- the cylindrical chamber and the conical chamber are integrally formed.
- each inlet is directly adjacent another inlet.
- each opening is directly adjacent another opening.
- the inlets are connected tangentially to the openings of the cylindrical chamber.
- the conical chamber comprises a flange for engaging the corresponding flange of the cylindrical chamber.
- the hydrocyclone comprises three vertically arranged inlets and three corresponding vertically arranged openings.
- the invention resides in an inlet unit having two or more vertically arranged passageways.
- each inlet is adjacent at least one other inlet.
- the inlet unit has three vertically arranged passageways.
- FIG. 1 illustrates a hydrocyclone according to an embodiment of the present invention
- FIG. 2 illustrates an internal view of the hydrocyclone of FIG. 1.
- FIG. 1 shows a hydrocyclone 10 having a cylindrical chamber 100 connected to a substantially conical chamber 200 made from or coated with an abrasion resistant material, such as an elastomer, a ceramic material or a hard metal.
- the base of the cylindrical chamber 100 is in fluid communication with the top (or circular base) of the conical chamber 200 to allow fluids to be transferred between the two chambers 100, 200.
- the conical chamber 200 terminates at a first outlet known as the apex 205 of the conical chamber 200.
- the hydrocyclone 10 also includes a second outlet known as a vortex finder 105 located opposite the apex 205 in the top wall 110 of the cylindrical chamber 100.
- the vortex finder 105 includes a pipe 107 which extends from outside the cylindrical chamber 100 through the top wall 110 to within the interior 108 of cylindrical chamber 100.
- An inlet unit 115 comprising three vertically arranged directly adjacent inlet passageways 115a, 115b, 115c allows aqueous slurries to be delivered into the cylindrical chamber 100. As can be seen, a second of the inlet passageways 115b is located between the other two inlet passageways 115a, 115c.
- This inlet unit 115 may be either permanently fixed (or integrally formed) with the cylindrical chamber 100, or, in some embodiments, may be a removable unit that can be connected to/disconnected from the cylindrical chamber 100. In this regard, the inlet unit 115 may be retrofitted to existing devices hydrocyclonic devices.
- each inlet passageway 115a, 115b, 115c is connected to a corresponding opening 120a, 120b, 120c in the wall 125 of the cylindrical chamber 100 to allow the slurry to enter.
- the openings 120a, 120b, 120c are vertically arranged and directly adjacent one another.
- the typically singular stream of particles is divided into three distinct parallel or side-by-side streams that all enter the cylindrical chamber 100 in the same vertical plane.
- the invention may have a single opening that receives a slurry split into two or more streams by two or more respective inlet passageways.
- a source of pressurised slurry to be separated is coupled by suitable pipes to the three passageways 115a, 115b, 115c of the inlet unit 115 thereby creating three streams of slurry.
- the three illustrated inlet passageways 115a, 115b, 115c deliver each stream onto a respective sloping flow direction conduit 130a, 130b, 130c located around the periphery (or circumference) of the wall 125 to the base 135 of the cylindrical chamber 110.
- Each stream initially travels along the sloping flow direction conduits 130a, 130b, 130c and is delivered to the conical chamber 200. It will be appreciated that the length of the conduits 130a, 130b, 130c can be lengthened or shortened as needed.
- the heavy particles and the light particles of each stream separate.
- the heavy particles of each stream are pushed to the walls 125, 210 of the cylindrical and conical chambers 100, 200 and travel in a descending helix pattern or pathway toward the apex 205 of the conical chamber 200 where they are eventually dispelled as indicated by arrow 206.
- the light particles accumulate in the centre of the hydrocyclone 10 and are thereby separated out.
- the heavy particles generate internal pressure as they move towards the apex 205 which creates a vortex that extends all the way to the top of the cylindrical chamber 100, where the vortex finder 105 is located.
- This vortex captures the lighter particles, which have not been centrifugally displaced to the walls 125, 210 and draws them out through the vortex finder 105 located in the cylindrical chamber 100 as indicated by arrow 208.
- Due to the separate parallel streams the abrasive wear on the lining of the inner walls 125, 210 of the cylindrical chamber 100 and the conical chamber 200 is dispersed more evenly about the lining and thereby avoids any localised wear caused by single path input streams. As a result, there is an increase in the useful life of the liner.
- the inlet passageways 115a, 115b, 115c are linear and positioned tangentially to the cylindrical chamber 100 but could also be non-linearly positioned, e.g. arcuate about or contiguous with the wall 125 of the cylindrical chamber 100.
- the hydrocyclone 10 includes a flange (not shown) located about the outer circumference of the cylindrical chamber 100 for engaging a complementary flange (not shown) located on the conical chamber 200. This allows the cylindrical chamber to be removed from a hydrocyclone if any part becomes damaged thereby mitigating the need for the entire hydrocyclone to be replaced.
- this also allows existing hydrocyclones having single inlets to be retrofitted with the multiple inlet cylindrical chamber.
- the cylindrical chamber and the conical chamber are integrally formed.
- a spool piece (not shown).
- the spool piece may act as a replacement for an individual inlet passageway (such as inlet passageway 115a) or as an attachment to an inlet passageway that acts as a transition piece to convert the normal circular cross-section piping which delivers slurry into the rectangular cross-section of the inlet feed of the cylindrical chamber.
- the spool piece may house an inlet unit.
- embodiments of the invention provide a hydrocyclone suitable for use in mining and quarrying applications which has reduced wear properties and the capability for effective separation of the heavy/larger particles and smaller/lighter particles.
- the terms ‘comprises’, ‘comprising’, ‘includes’, ‘including’, or similar terms are intended to mean a non-exclusive inclusion, such that a method, system or apparatus that comprises a list of elements does not include those elements solely, but may well include other elements not listed.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2019248218A AU2019248218B2 (en) | 2018-04-04 | 2019-04-02 | Hydrocyclone |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2018901104 | 2018-04-04 | ||
AU2018901104A AU2018901104A0 (en) | 2018-04-04 | Hydrocyclone |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019191803A1 true WO2019191803A1 (en) | 2019-10-10 |
Family
ID=68099660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2019/050287 WO2019191803A1 (en) | 2018-04-04 | 2019-04-02 | Hydrocyclone |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2019248218B2 (en) |
WO (1) | WO2019191803A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4090956A (en) * | 1976-09-02 | 1978-05-23 | Wilmot Engineering Co. | Hydrocyclone |
US4279743A (en) * | 1979-11-15 | 1981-07-21 | University Of Utah | Air-sparged hydrocyclone and method |
AU5364386A (en) * | 1986-02-17 | 1987-08-20 | Miller, F.G. | Dual feed hydrocyclone |
US4696737A (en) * | 1986-02-28 | 1987-09-29 | The Bauer Bros. Co. | Fiber recovery elutriating hydrocyclone |
US4960525A (en) * | 1988-09-26 | 1990-10-02 | The United States Of America, As Represented By The Secretary Of Agriculture | Hydrocyclone for washing particles in liquid suspension |
US20060117959A1 (en) * | 2002-10-02 | 2006-06-08 | Gjertsen Lars H | Scrubber |
US8733400B2 (en) * | 2006-07-27 | 2014-05-27 | Sulzer Chemtech Ag | Inlet device for a fluid fed tangentially into an apparatus |
-
2019
- 2019-04-02 WO PCT/AU2019/050287 patent/WO2019191803A1/en active Application Filing
- 2019-04-02 AU AU2019248218A patent/AU2019248218B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4090956A (en) * | 1976-09-02 | 1978-05-23 | Wilmot Engineering Co. | Hydrocyclone |
US4279743A (en) * | 1979-11-15 | 1981-07-21 | University Of Utah | Air-sparged hydrocyclone and method |
AU5364386A (en) * | 1986-02-17 | 1987-08-20 | Miller, F.G. | Dual feed hydrocyclone |
US4696737A (en) * | 1986-02-28 | 1987-09-29 | The Bauer Bros. Co. | Fiber recovery elutriating hydrocyclone |
US4960525A (en) * | 1988-09-26 | 1990-10-02 | The United States Of America, As Represented By The Secretary Of Agriculture | Hydrocyclone for washing particles in liquid suspension |
US20060117959A1 (en) * | 2002-10-02 | 2006-06-08 | Gjertsen Lars H | Scrubber |
US8733400B2 (en) * | 2006-07-27 | 2014-05-27 | Sulzer Chemtech Ag | Inlet device for a fluid fed tangentially into an apparatus |
Also Published As
Publication number | Publication date |
---|---|
AU2019248218B2 (en) | 2020-11-26 |
AU2019248218A1 (en) | 2019-10-10 |
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