WO2006133804A1 - Drei-phasen-vollmantel-schneckenzentrifuge und verfahren zur regelung des trennprozesses - Google Patents
Drei-phasen-vollmantel-schneckenzentrifuge und verfahren zur regelung des trennprozesses Download PDFInfo
- Publication number
- WO2006133804A1 WO2006133804A1 PCT/EP2006/005172 EP2006005172W WO2006133804A1 WO 2006133804 A1 WO2006133804 A1 WO 2006133804A1 EP 2006005172 W EP2006005172 W EP 2006005172W WO 2006133804 A1 WO2006133804 A1 WO 2006133804A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drum
- phase
- screw centrifuge
- disc
- solid bowl
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
- B04B11/082—Skimmers for discharging liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2083—Configuration of liquid outlets
Definitions
- the invention relates to a three-phase solid bowl screw centrifuge (three-phase decanter) according to the preamble of claim 1 and a method for controlling the separation process with such a centrifuge.
- US Pat. No. 3,623,656 shows a three-phase decanter with which two liquid phases and one solid phase can be discharged from the drum.
- the liquid outlets can be adjusted by a conversion of the machine when the machine stops.
- WO 03/074 185Al shows a three-phase decanter, with which also two liquid phases and one solid phase can be derived from the drum. With a weir, the flow rate of the heavier liquid phase can be adjusted.
- DE 38 22 983 A1 shows a three-phase decanter, with which also two liquid phases and one solid phase can be derived from the drum, one liquid phase being diverted through a weir and the other through a paring disc.
- DE 195 00 600 C1 and DE 102 23 802 A1 show two-phase decanters in which the liquid is discharged from a chamber by means of a paring disc.
- WO 02/062483 A1 shows a method for operating a solid-bowl slug centrifuge.
- DE 26 17 692 A1 discloses a solid bowl screw centrifuge with a plurality of disk packs from separating discs and a plurality of screw portions.
- Conversion parts are generally available for adapting to the respective product properties or for adapting the process to the respective conditions in the case of three-phase separating decanters.
- the invention has the object of reducing the design effort to create a slightly changed in itself product properties adaptable three-phase decanter and specify an advantageous method for its operation.
- the invention initially provides a three-phase solid bowl screw centrifuge comprising: a rotatable drum and a screw disposed in the drum, at least one solids discharge at one axial end of the drum and at least two or more liquid outlets at the other axial end thereof various dense liquid phases - a lighter liquid phase and a heavier liquid phase - the one liquid outlet being one in ner peeling chamber arranged peeling disk and wherein the other liquid outlet is formed like an overflow, wherein the peeling disk two Regulierusionn preferably the same inner diameter are connected upstream, extending radially from outside to inside and between which a siphon dives in the peeling chamber of the inner circumference extends to the outside, so that between the siphon disc and the paring disc as axial boundaries, the inner radius of the lighter liquid phase in this axial region and the inner shell in the peeling chamber in operation, an annular chamber is formed in the at least one fluid line to change the pressure in the Ring chamber opens, via or through which the pressure in the annular chamber is variable to change the separation zone
- the annular chamber as means for changing the pressure in the annular chamber on a fluid line for supplying a fluid, in particular a gas in the annular chamber.
- the overflow for the other phase can be realized by radial discharge pipes, which pass through the drum shell or lid.
- This basic structure can be realized in particular in two variants: in one, the heavier liquid phase is diverted through the discharge tube and the lighter one through the paring disc and the other the lighter liquid phase through the discharge tube and the heavier one through the paring disc. Both variants allow a good control of the process, but lead to different rule characteristics.
- the invention also provides a method of operating a three-phase solid bowl screw centrifuge according to any one of the preceding claims, wherein the control of the separation process in the drum in the simplest way by changing the pressure in the annular chamber as a control variable. This variant is preferred because a simple and good control of the separation process is possible.
- the regulation of the separation process in the drum takes place as a controlled variable as a function of the concentration in the solid phase or in one or both of the liquid phases derived.
- the invention is also particularly suitable for phase separation in the recovery of hydrometals such as e.g. Cobalt, nickel, copper.
- the formation of emulsions during the extraction can not be avoided.
- the extraction and the emulsion consist of three phases, an organic phase, an aqueous phase and solids.
- the open settling tanks of the extraction are susceptible to contamination from the air. These different dust concentrations lead to a density difference of the individual phases in the emulsion.
- the decanter according to the invention provides a remedy.
- the separation diameter within the decanter can be adjusted online by applying pressure to the annulus. This separates the emulsion cleanly into the three phases.
- hydrometals such as e.g. Cobalt, nickel, copper thus offers considerable advantages.
- FIG. 2 is a schematic sectional view of a portion of the Vollmantel
- 3 is a schematic sectional view of a portion of the solid shell
- Fig. 4 is a diagram for illustrating the performance
- FIG. 1 Controllability of separation and clarification processes with the solid bowl centrifuge according to the invention from FIG. 1; 5 is a sectional view of a second three-phase
- FIG. 6 is a schematic sectional view of a portion of the solid shell
- FIG. 7 shows a schematic sectional view of a partial region of the solid bowl centrifuge from FIG. 5 in a second operating state
- Fig. 8 is a diagram for illustrating the performance and the
- Fig. 1 and 5 show parts of three-phase solid bowl screw centrifuges, which has a rotatably mounted (bearing 17) drum 1 - here with a horizontal axis of rotation - and arranged in the drum 1 rotatable screw 2 with a screw body 3, on which a circumferential Schneckenblatt 4 is arranged.
- the drum 1 and the screw 2 rotate at different speeds n, m about the same axis of rotation (at the diameter D 0 ).
- a bearing 16 is arranged between drum 1 and screw body 3.
- the second bearing of the screw is located on the solid side (not shown here).
- both the drum 1 and the screw 2 for example conical, taper at one end.
- a solids discharge 24 is arranged for the solid phase S transported by the screw to this end of the drum 1, whereas two liquid phases LL and FIL separable from each other in the centrifugal field - a lighter and a heavier liquid phase - Area of the opposite cylindrical end of the drum 1, which is closed by a drum cover 5, are derived from the drum 1.
- a baffle plate 18 may for example be arranged on the worm body 3 in the transition region to the tapering section.
- An inlet pipe 19 here extends, for example, from the cylindrical end of the drum 1 into the drum 1. It opens into a distributor 20, via which the product is passed into the drum 1.
- the drum cover 5 has several openings or openings 21, 22 which pass axially through the drum cover. Preferably, between four and eight such openings on a circle of a predetermined diameter circumferentially distributed in the drum cover 5 are formed.
- first openings 21 - A portion of these openings - hereinafter referred to as first openings 21 - is formed in the manner of one-sided closed recesses (or in the manner of blind holes) and serves to drain the heavier liquid phase HL and a portion of these openings - hereinafter referred to as second openings 22 - serves to discharge the lighter liquid phase LL.
- FIGS. 1 and 5 are the same.
- the regions of the decanter 1 arranged downstream of the first and second openings are arranged, as it were, "reversed", or the separating rifle is located in front of the openings leading to the paring disc 9.
- the heavier-fluid phase-gathering radially further outward-via the cutting-off rifle 6 on the drum cover is guided in each case into a chute which adjoins the cutting-off rifle 6 over a part of the circumference of the cutting rifle 6.
- tion space 7 - here formed by the openings 21 itself - directed.
- discharge spaces 7 each projecting the drum shell passing discharge pipes 8, wherein the inner radius to which the respective discharge pipe 8 extends, also miter the drain radius for the heavier liquid phase HL.
- This discharge radius for the heavier phase HL is not variable during operation or during a running process, but it can be changed or set at a standstill of the drum 1 by exchanging the discharge tube 8 and the tube against one with a different length.
- the derivative of the lighter liquid phase LL takes place after passing through the second openings 22 by means of a paring disc 9, which is arranged in a peel chamber 10 upstream of the drum shell, which connects axially to the drum interior and whose inner diameter is equal to or - preferably - smaller than that Inner diameter of the drum 1 in its cylindrical portion.
- the light liquid phase LL is discharged through this peeling disk 9 and a subsequent discharge channel 23 from the drum.
- the peeling disk 9 are connected to the interior of the drum - see also Figs. 2 and 3 - in the peeling chamber 10 axially upstream two regulating disks 11, 12 of the same inner diameter, which extend radially from outside to inside and between which a siphon disk 13 dives extends in the peeling chamber 10 from the inner circumference to the outside and whose outer diameter is at a larger radius relative to the axis of rotation D of the drum 1 than the inner diameter of the two Regulierusionn 11, 12th
- the regulating blade 11 facing the cutting-edge gun provides an overflow diameter for the easy liquid phase LL.
- annular chamber 14 thus forms during operation.
- this annular chamber 14 opens a fluid supply line 15 through which a fluid, such as a gas can be passed from the outside into the annular chamber 14. It is thus possible to change the pressure in the annular chamber 14, which also causes a change in the radius of the lighter liquid phase and thus reacts on the separation diameter in the drum 1. This makes it possible in a simple way, these two sizes - pond depth (inner radius drum minus the radius at the line D mirror level, eg in Fig. 3) and separation zone between light and heavy phase - during operation only by changing the pressure in the annular chamber 14 to influence or change.
- a fluid such as a gas
- the overflow diameter of the lighter phase can be preset.
- the layer thickness of the lighter phase becomes larger and the outflow velocity smaller (longer sedimentation time).
- the degree of clarification of the lighter phase is thus increased or better.
- the crossed hatching indicates a mixed phase or separation zone region.
- the drain pressure of the lighter phase can be largely varied independently of the chamber pressure.
- the pressure in the annular chamber 14 is increased in order to move the separation zone in the interior of the drum further outwards to a larger radius. This usually causes a greater layer thickness and a better degree of clarification of the lighter phase or a better phase separation.
- the diagram of Figure 4 shows the behavior at a constant speed.
- the liquid filling in the drum 1 is not constant due to the change in pressure.
- D in each case the diameter in the drum on both sides of the axis of rotation is designated.
- the diameter D pipes (diameter drain pipes) and D cutting gun are kept constant during operation, although they are per se changeable (by replacement). Constant are also the inner diameter of the drum and the inner diameter of the solids discharge, which are usually not changeable by conversion.
- the diameter on which the separation zone lies increases with the pressure.
- the liquid level D level of the mirror in contrast, decreases in inverse proportion to the pressure.
- FIGS 2 and 3 show schematically the conditions in the drum at two different pressures.
- control range is smaller in this type of control and can only be used if a change in the drum speed during operation is permitted at all.
- the diameter of the separation zone then increases with the speed (not shown here).
- FIG. 5 A further exemplary embodiment is shown in FIG. 5.
- the heavier liquid phase is discharged via the regulating disk arrangement and the peeling disk 9, and the lighter liquid phase via the discharge pipe 8, which is achieved in that here the dividing disk-like separating gun in each case before the continuous, second openings open on both sides 26 is arranged.
- the Scheidewehr 6 thus directs the heavy liquid phase HL to the peeling disc, whereas the light phase in about the discharge pipes 8 is discharged into the blind hole-like or first openings 25 closed at one end.
- control variable for example - preferably - the concentration distribution of any of the derived phases is used.
- the pressure of the heavy liquid phase in the light increases, the pressure is reduced to further shift the separation zone in the interior of the drum to a larger radiance. This usually causes a greater layer thickness and a better degree of clarification of the lighter phase.
- FIG. 8 The corresponding control behavior is illustrated in FIG. 8 by means of an example analogous to FIG. 4.
- the various diameters are impressed as a function of the pressure in the annular chamber 14.
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06754000.5A EP1901849B1 (de) | 2005-06-14 | 2006-05-31 | Drei-phasen-vollmantel-schneckenzentrifuge und verfahren zur regelung des trennprozesses |
CN2006800214786A CN101203318B (zh) | 2005-06-14 | 2006-05-31 | 三相全壳-螺旋离心分离机及其应用和运行分离机的方法 |
CA2612022A CA2612022C (en) | 2005-06-14 | 2006-05-31 | Three-phase solid bowl screw centrifuge and method of controlling the separating process |
AU2006257485A AU2006257485B2 (en) | 2005-06-14 | 2006-05-31 | Three-phase solid bowl screw centrifuge and method of controlling the separating process |
DK06754000.5T DK1901849T3 (en) | 2005-06-14 | 2006-05-31 | Full-cut three-phase screw centrifuge and method for controlling the peel process |
US11/922,144 US8523749B2 (en) | 2005-06-14 | 2006-05-31 | Three-phase solid bowl screw centrifuge and method of controlling the separating process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005027553.2 | 2005-06-14 | ||
DE102005027553A DE102005027553A1 (de) | 2005-06-14 | 2005-06-14 | Drei-Phasen-Vollmantel-Schneckenzentrifuge und Verfahren zur Regelung des Trennprozesses |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006133804A1 true WO2006133804A1 (de) | 2006-12-21 |
Family
ID=36786249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/005172 WO2006133804A1 (de) | 2005-06-14 | 2006-05-31 | Drei-phasen-vollmantel-schneckenzentrifuge und verfahren zur regelung des trennprozesses |
Country Status (8)
Country | Link |
---|---|
US (1) | US8523749B2 (de) |
EP (1) | EP1901849B1 (de) |
CN (1) | CN101203318B (de) |
AU (1) | AU2006257485B2 (de) |
CA (1) | CA2612022C (de) |
DE (1) | DE102005027553A1 (de) |
DK (1) | DK1901849T3 (de) |
WO (1) | WO2006133804A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7510519B2 (en) * | 2003-08-08 | 2009-03-31 | Westfalia Separator Ag | Solid bowl screw centrifuge comprising a centripetal pump with a throtting device |
US20100041535A1 (en) * | 2006-02-10 | 2010-02-18 | Westfalia Separator Ag | Solid-bowl screw centrifuge and process for its operation |
DE102012105828A1 (de) | 2012-07-02 | 2014-01-02 | Gea Mechanical Equipment Gmbh | Verfahren zur Aufarbeitung einer bei der hydrometallurgischen Gewinnung eines Metalls gebildeten Emulsion |
WO2013139920A3 (de) * | 2012-03-22 | 2014-06-19 | Hiller Gmbh | Vollmantel-schneckenzentrifuge |
KR101831556B1 (ko) | 2017-05-11 | 2018-02-22 | 허승우 | 폐기물의 오일추출이 가능한 원심분리기 |
DE102023106308A1 (de) | 2023-03-14 | 2024-09-19 | Gea Westfalia Separator Group Gmbh | Vollmantel-Schneckenzentrifuge und Verfahren zur Steuerung oder Regelung eines Trennprozesses mit der Vollmantel-Schneckenzentrifuge |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005027553A1 (de) * | 2005-06-14 | 2006-12-28 | Westfalia Separator Ag | Drei-Phasen-Vollmantel-Schneckenzentrifuge und Verfahren zur Regelung des Trennprozesses |
DK178253B1 (en) * | 2010-11-12 | 2015-10-12 | Alfa Laval Corp Ab | A centrifugal separator and an outlet element for a centrifugal separator |
CN103143453B (zh) * | 2010-12-30 | 2015-11-18 | 中国石油天然气股份有限公司 | 一种三相卧螺离心机 |
DE102012106226A1 (de) * | 2012-07-11 | 2014-01-16 | Gea Mechanical Equipment Gmbh | Vollmantel-Schneckenzentrifuge mit Überlaufwehr |
CN103586142A (zh) * | 2013-11-15 | 2014-02-19 | 上海普锐通实业有限公司 | 一种卧式螺旋沉降三相分离离心机 |
CN104841573B (zh) * | 2015-05-20 | 2017-06-06 | 中国重型机械研究院股份公司 | 一种新型轻重液相堰口高度均可调装置 |
CN106540819A (zh) * | 2015-09-23 | 2017-03-29 | 济南瀚瑞糸机械设备制造有限公司 | 一种固液四相卧螺离心机 |
CN110142149B (zh) * | 2019-05-29 | 2024-05-03 | 浙江工业大学 | 一种卧螺离心机用复合型排气结构 |
DE102022100511A1 (de) | 2022-01-11 | 2023-07-13 | Gea Westfalia Separator Group Gmbh | Vollmantel-Schneckenzentrifuge und Verfahren zur Regelung des Trennprozesses der Vollmantel-Schneckenzentrifuge |
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DE2707111A1 (de) * | 1977-02-18 | 1978-08-24 | Flottweg Werk Bruckmayer | Vollmantel-schneckenzentrifuge zur trennung eines feststoff-fluessigkeitsgemisches |
DE3014315A1 (de) * | 1980-04-15 | 1981-10-22 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Verfahren und vorrichtung zum entfernen von metallenaus metallsalzloesungen |
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-
2005
- 2005-06-14 DE DE102005027553A patent/DE102005027553A1/de not_active Ceased
-
2006
- 2006-05-31 EP EP06754000.5A patent/EP1901849B1/de active Active
- 2006-05-31 US US11/922,144 patent/US8523749B2/en active Active
- 2006-05-31 CN CN2006800214786A patent/CN101203318B/zh not_active Expired - Fee Related
- 2006-05-31 CA CA2612022A patent/CA2612022C/en active Active
- 2006-05-31 WO PCT/EP2006/005172 patent/WO2006133804A1/de active Application Filing
- 2006-05-31 AU AU2006257485A patent/AU2006257485B2/en not_active Ceased
- 2006-05-31 DK DK06754000.5T patent/DK1901849T3/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2707111A1 (de) * | 1977-02-18 | 1978-08-24 | Flottweg Werk Bruckmayer | Vollmantel-schneckenzentrifuge zur trennung eines feststoff-fluessigkeitsgemisches |
DE3014315A1 (de) * | 1980-04-15 | 1981-10-22 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Verfahren und vorrichtung zum entfernen von metallenaus metallsalzloesungen |
DE19500600C1 (de) * | 1995-01-11 | 1996-02-08 | Westfalia Separator Ag | Vollmantelzentrifuge |
EP1044723A1 (de) * | 1999-03-29 | 2000-10-18 | M-I Llc | Zentrifugensteuerungssystem und Verfahren mit Betriebsüberwachung und Pumpensteuerung |
WO2002062483A1 (de) * | 2001-02-08 | 2002-08-15 | Westfalia Separator Industry Gmbh | Verfahren zum trennen eines mehrphasengemisches und dekantierzentrifugensystem zur durchführung des verfahrens |
Cited By (9)
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US7510519B2 (en) * | 2003-08-08 | 2009-03-31 | Westfalia Separator Ag | Solid bowl screw centrifuge comprising a centripetal pump with a throtting device |
US20100041535A1 (en) * | 2006-02-10 | 2010-02-18 | Westfalia Separator Ag | Solid-bowl screw centrifuge and process for its operation |
US8444541B2 (en) * | 2006-02-10 | 2013-05-21 | Gea Mechanical Equipment Gmbh | Solid-bowl centrifuge having a liquid discharge sealed such that a pond level in a separation space remains unchanged when pressurization occurs |
WO2013139920A3 (de) * | 2012-03-22 | 2014-06-19 | Hiller Gmbh | Vollmantel-schneckenzentrifuge |
DE102012105828A1 (de) | 2012-07-02 | 2014-01-02 | Gea Mechanical Equipment Gmbh | Verfahren zur Aufarbeitung einer bei der hydrometallurgischen Gewinnung eines Metalls gebildeten Emulsion |
WO2014005889A1 (de) | 2012-07-02 | 2014-01-09 | Gea Mechanical Equipment Gmbh | Verfahren zur aufarbeitung einer bei der hydrometallurgischen gewinnung eines metalls gebildeten emulsion |
RU2624310C2 (ru) * | 2012-07-02 | 2017-07-03 | Геа Меканикал Эквипмент Гмбх | Способ переработки эмульсии, полученной при гидрометаллургическом извлечении металла |
KR101831556B1 (ko) | 2017-05-11 | 2018-02-22 | 허승우 | 폐기물의 오일추출이 가능한 원심분리기 |
DE102023106308A1 (de) | 2023-03-14 | 2024-09-19 | Gea Westfalia Separator Group Gmbh | Vollmantel-Schneckenzentrifuge und Verfahren zur Steuerung oder Regelung eines Trennprozesses mit der Vollmantel-Schneckenzentrifuge |
Also Published As
Publication number | Publication date |
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US8523749B2 (en) | 2013-09-03 |
DE102005027553A1 (de) | 2006-12-28 |
EP1901849A1 (de) | 2008-03-26 |
CN101203318A (zh) | 2008-06-18 |
EP1901849B1 (de) | 2018-08-29 |
AU2006257485A1 (en) | 2006-12-21 |
AU2006257485B2 (en) | 2011-06-02 |
CN101203318B (zh) | 2012-01-11 |
CA2612022A1 (en) | 2006-12-21 |
CA2612022C (en) | 2014-08-19 |
DK1901849T3 (en) | 2018-12-17 |
US20100105536A1 (en) | 2010-04-29 |
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