WO1986001436A1 - A method of controlling the interface between oil and water during discharge of sludge from a centrifuge for separation of oil and water and sludge - Google Patents
A method of controlling the interface between oil and water during discharge of sludge from a centrifuge for separation of oil and water and sludge Download PDFInfo
- Publication number
- WO1986001436A1 WO1986001436A1 PCT/DK1985/000085 DK8500085W WO8601436A1 WO 1986001436 A1 WO1986001436 A1 WO 1986001436A1 DK 8500085 W DK8500085 W DK 8500085W WO 8601436 A1 WO8601436 A1 WO 8601436A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- sludge
- oil
- centrifuge
- signal
- 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.)
- Ceased
Links
Classifications
-
- 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
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
-
- 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
- B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
- B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
Definitions
- the invention relates to a method of controlling the interface between oil and water during discharge of sludge from a centrifuge for separation of oil and water or similar fractions and impurities from a mixed liquid carried into the separation chamber of the rotor bowl of
- valves in the water outlet pipe and flushing water pipe and of the control liquid valves are performed by means of a timer which is adjust ⁇ ed to operate at greater or smaller intervals dependent on the content of sludge in the supplied oil/water mixture
- time interval after the signal for sludge shooting said 5 time interval being determined by the same water flow.
- the amount of discharged water measured in the flow-meter is representative of the amount of water supplied with the mixed liquid.
- the flow-meter, by way of a signal converter, 10 gives a signal to the control system to open the flush ⁇ ing water pipe and a signal to close the water outlet pipe during a time period determined by the water flow during normal centrifugalization before the signal for discharge of sludge and to reopen the water outlet pipe 15 and close the flushing water pipe at a time interval after the signal for sludge shooting, said time interval being determined by the same water flow.
- Figure 1 shows an axial section through a 30 centrifuge in a separator system controlled by the method according to the invention
- Figure 2 a simplified diagram of functions for the separator system.
- Figure 1 shows an oil centrifuge of known art, 35 comprising a centrifuge rotor having a bowl hood (1) and an axially sliding bowl bottom (2) and a separation chamber with a disc stack (3) .
- a centrifuge rotor having a bowl hood (1) and an axially sliding bowl bottom (2) and a separation chamber with a disc stack (3) .
- a plurality of sludge ports (4) are placed, which are opened when the bowl bottom is moved downwards .
- the bowl bottom (2) is kept up by makeup water introduced through a pipe (8) into the compartment between the sliding bowl bottom (2) and the stationary bowl bottom (6) of the rotor via an operating slide (7) which is axially movable in . a ring chamber.
- an operating slide (7) which is axially movable in . a ring chamber.
- centrifuge action is called sludge shooting or discharge of sludge.
- the supply of the oil-water mixture is performed continuously through a feed line (9) and the flushing water and water for forming a liquid seal, by opening of a valve (18) are carried downwards between the wall of the bowl hood (1) of the rotor and the top disc above the disc stack (3) before starting and during each sludge shooting and adjust the position of the oil-water inter- face before sludge shooting.
- the separated water is carried away over a water paring disc (11) through a water outlet pipe (12)
- clari- fied oil is carried away over an oil paring disc (13) through an oil discharge pipe (14) .
- a flow-meter (15) is placed in the water outlet pipe (12) , which records the amount of outflowing water and is adapted to provide, by way of a signal converter, a signal to a control circuit which closes a shutoff valve (16) and opens the valve (18) during a time period t- determined by the water out ⁇ flow during normal centrifugalization before the dis- charge of sludge, and keeps the valve (16) closed and the valve (18) open during another time period t_ determ ⁇ ined by the water outflow during normal centrifugalization, the valves thereafter regaining their normal position.
- the signal from the signal converter is re ⁇ tained in the control circuit.
- the time t_. is used as closing period for the water shutoff valve (16) and opening period for .the valve
- the signal is also used in the following formula: K-. in which k 2 + q
- the time t fi is used as closing period for the water shutoff valve (16) and opening period for the valve (18) for flushing water after sludge shooting signal.
- valves (16) and (18) may be performed by means of several other forms of sludge shooting control systems than that described above.
Landscapes
- Centrifugal Separators (AREA)
Abstract
In the water outlet pipe (12) of an oil centrifuge, a flow-meter (15) is installed, continuously measuring the amount of outflowing water and, by way of a signal converter, determining the moments for closing and re-opening a valve (16) in the water outlet pipe (12) and for opening and reclosing a valve (18) in the flushing water pipe of the centrifuge before and after each signal for opening the sludge ports (4) of the centrifuge. The oil-water interface in the separation chamber of the centifuge is thereby controlled in such a manner that continuous centrifugalization is maintained during sludge shooting.
Description
0
A Method of Controlling the Interface between
Oil and Water during Discharge of Sludge from a Centrifuge
/■v for Separation of Oil and Water and Sludge .
5 The invention relates to a method of controlling the interface between oil and water during discharge of sludge from a centrifuge for separation of oil and water or similar fractions and impurities from a mixed liquid carried into the separation chamber of the rotor bowl of
10 a centrifuge, in which oil and water are separated and carried away through their respective outlet pipes, and in which an automatic timer opens the sludge ports from the separation chamber at regular intervals at the same time while flushing water is supplied to the separation
15 chamber in order to'maintain the oil-water interface. It is known to control the oil-water interface during the discharge of sludge from an oil centrifuge by at the same time while supplying mixed liquid to the . centrifuge, closing the water outlet and introducing a
20 volume of flushing water corresponding to the volume of sludge to be expelled, along the outer side of the disc stack of the centrifuge and into the separation chamber and forcing the oil-water interface inwardly so that only water and sludge are expelled when the sludge ports are
25 opened at brief injections of operating liquid. After dis¬ charge of sludge and water from the separation chamber and closing of the sludge ports, the supply of flushing water is .interrupted and the oil-water interface will then adjust to normal centrifuging position.
30 The activation of the valves in the water outlet pipe and flushing water pipe and of the control liquid valves is performed by means of a timer which is adjust¬ ed to operate at greater or smaller intervals dependent on the content of sludge in the supplied oil/water mixture
35 This way of controlling is satisfactory when the content of water in the oil is relatively small, e.g. 1 - 2 per cent. However, if' the content of water is strong-
S£
ly fluctuating, it is difficult to control the oil-water interface during the discharge of sludge from a centrifuge as the previously mentioned timer functions at fixed time intervals, so that closing of the water outlet while simultaneously supplying flushing water and mixed liquid implies a small content of water which is normally the case in mineral oils for the operation of marine engines in the form of fuel and lubricating oils.
At the occurrence of greater amounts of water in the mixed liquid, the above mentioned control will cause the oil-water interface to be forced so far inwardly to¬ wards the centre of the centrifuge bowl that the dis¬ charged oil will be mixed up with greater or smaller amounts of water which is unacceptable. In such cases it will be necessary to interrupt the supply of mixed liquid to the centrifuge in connect¬ ion with the discharge of sludge, in order to achieve controlled conditions for the oil-water interface, by avoiding the water supply contribution from the mixed liquid.
This, however, results in lost time of production- and, if the sludge discharge operations are frequent which is the case of most waste oils and settlings in large bunker fuel tanks in refineries because of the great con— tent of impurities and strongly fluctuating content of water of these oils, the productivity becomes unacceptably small. Consequently, there is a need to be capable of controlling the oil-water interface during the sludge dis¬ charge at the same time while supplying mixed liquid, to thereby ensure the largest efficiency of the centrifuge. According to the invention this is obtained in
that the amount of water introduced per time unit is be¬ ing recorded continuously, preferably by measuring the outflowing water continuously in a flow-meter and that, before giving, a signal ordering the control mechanism to open the sludge ports, a signal is given to close the water outlet pipe and to open the flushing water supply
during a time period determined by the water flow during normal centrifugalization and to reopen the water outlet pipe and reclose the flushing water supply at a certain
/•" time interval after the signal for sludge shooting, said 5 time interval being determined by the same water flow.
The amount of discharged water measured in the flow-meter is representative of the amount of water supplied with the mixed liquid.
The flow-meter, by way of a signal converter, 10 gives a signal to the control system to open the flush¬ ing water pipe and a signal to close the water outlet pipe during a time period determined by the water flow during normal centrifugalization before the signal for discharge of sludge and to reopen the water outlet pipe 15 and close the flushing water pipe at a time interval after the signal for sludge shooting, said time interval being determined by the same water flow.
By continuously recording the amount of discharge water from the centrifuge, it has become possible to 20- obtain immediate control of the oil-water interface while the sludge ports are open in such a way that the oil- water interface in the separation chamber will adjust so that the centrifuge will be working continuously during the discharge of sludge as well and deliver the largest 25 possible amount of clarified oil according to circum¬ stances.
In the following, the invention will be further described with reference to the drawing, in which
Figure 1 shows an axial section through a 30 centrifuge in a separator system controlled by the method according to the invention, and
Figure 2 a simplified diagram of functions for the separator system.
Figure 1 shows an oil centrifuge of known art, 35 comprising a centrifuge rotor having a bowl hood (1) and an axially sliding bowl bottom (2) and a separation chamber with a disc stack (3) . Along the circumference
of the separation chamber a plurality of sludge ports (4) are placed, which are opened when the bowl bottom is moved downwards .
During normal centrifugalization, the bowl bottom (2) is kept up by makeup water introduced through a pipe (8) into the compartment between the sliding bowl bottom (2) and the stationary bowl bottom (6) of the rotor via an operating slide (7) which is axially movable in. a ring chamber. When the bowl bottom is to be moved downwards for opening the sludge ports (4) , operating water is in¬ jected through a pipe (5) to the space for the spring- influenced operating slide (7) which moves downwards and opens drain valves (20) between the compartment below the sliding bowl bottom (2) and the ring chamber for the operating slide, from which the water flows out, and the bowl bottom (2) slides fast downwards and opens the sludge ports (4) .
When the chamber below. he operating slide is filled with water flowing from the drain valves (20) through the channels (19) , the" pressure difference between the top and under sides of the operating slide is equal¬ ized, and the operating slide is again moved upwards by the spring power and builts up again the water pressure in the compartment below the sliding bowl bottom (2) of the rotor.
The above mentioned centrifuge action is called sludge shooting or discharge of sludge.
The supply of the oil-water mixture is performed continuously through a feed line (9) and the flushing water and water for forming a liquid seal, by opening of a valve (18) are carried downwards between the wall of the bowl hood (1) of the rotor and the top disc above the disc stack (3) before starting and during each sludge shooting and adjust the position of the oil-water inter- face before sludge shooting. During the centrifugalization, the separated water is carried away over a water paring disc (11) through a water outlet pipe (12) , whereas clari-
fied oil is carried away over an oil paring disc (13) through an oil discharge pipe (14) .
According to the invention, a flow-meter (15) is placed in the water outlet pipe (12) , which records the amount of outflowing water and is adapted to provide, by way of a signal converter, a signal to a control circuit which closes a shutoff valve (16) and opens the valve (18) during a time period t- determined by the water out¬ flow during normal centrifugalization before the dis- charge of sludge, and keeps the valve (16) closed and the valve (18) open during another time period t_ determ¬ ined by the water outflow during normal centrifugalization, the valves thereafter regaining their normal position. By the described manner of controlling, it has become possible to obtain an immediate adjustment of the oil-water interface during the discharges of sludge even in case of strongly varying ratios of oil-water mixtures (0 - 100 per cent) in the supplied liquid and, consequent¬ ly, a continuous operation of the centrifuge under all circumstances and thus, a maximum efficiency.
As an example, the operation .of a separator system by the method according to the invention is described in the following with reference to the simplified diagram of functions of Figure 2. The mixture of oil, water and impurities is supplied to the centrifuge through the feed line (9) , and the flow of separated water (e.g. 0 - 7.200 l/h;< through the pipe (12) is measured continuously by the flow-meter (15) which provides a signal which is converted by way of a signal converter, e.g. into 4 - 20 mA.
By signal for sludge shooting, either manually by pressing a pushbutton or automatically via timer control or the like, the signal from the signal converter is re¬ tained in the control circuit. The signal is used in the following formula (in which the constants K, and k-. are adapted to the actual centrifuge size) :
Kl fcs = i -q in which
t = time in seconds
5 q = water outlet in litre/sec.
The time t_. is used as closing period for the water shutoff valve (16) and opening period for .the valve
(18) for flushing water before sludge shooting 10 signal.
The signal is also used in the following formula: K-. in which k2 + q
15 t6_ = time in seconds
'" . ' q = water outlet in litre/sec*
20 The time tfi is used as closing period for the water shutoff valve (16) and opening period for the valve (18) for flushing water after sludge shooting signal.
25 In case of a generally occurring size of the cen¬ trifuge, for example,
30 The above mentioned times adapted to the actual dimensions of the centrifuge have proved to allow a satisfactory purification of oil phase as well of water phase during continuous supply of oil-water mixtures having a strongly fluctuating content of water.
35 It will be understood that the method according to the invention may be used for separation of other liquid mixtures than oil-water mixtures, and that the control of
the valves (16) and (18) may be performed by means of several other forms of sludge shooting control systems than that described above.
Claims
1. A method of controlling the interface between oil and water during discharge of sludge from a centrifuge
5 for separation of oil and water or similar fractions and impurities from a mixed liquid carried into the separation chamber of the rotor bowl of a centrifuge, in which oil and water are separated and carried away through their respective outlet pipes, and in which an automatic timer
-10 opens the sludge ports from the separation chamber at regular intervals at the same time while flushing water is supplied to the separation chamber in order to maintain the oil-water interface, c h a r a c t e r i z e d in that the amount of water introduced per time unit is being
15 recorded continuously, preferably be measuring the out¬ flowing water continuously in a flow-meter (15) and that, before giving a signal ordering the control mechanism to open the sludge ports (4) , a. signal is given -to close the water outlet pipe (12) and to open the flushing water '
20 supply (10) during a time period determined by the. water flow during normal centrifugalization and to reopen the water outlet pipe (12) and reclose the flushing water supply (10) at a certain time interval after the signal for sludge shooting, said time interval being determined
25 by the same water flow.
2. A method according to claim 1, c h a r ¬ a c t e r i z e d in that the time period t_ in seconds, during which the water outlet is closed and the flusing water supply is opened before the sludge shooting, is
30 determined by the following formula: in which the constants are adapted to the size of the 
centrifuge,
35 and that the time period t_ in seconds, during which the water outlet is kept closed, and the flushing water supply is kept open is determined by the formula: K,
6 k~ + q in which the constants are adapted to the size of the centrifuge,
in which q = water outflow in litre per second before the closing signal is given.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK4102/84 | 1984-08-28 | ||
| DK410284A DK410284A (en) | 1984-08-28 | 1984-08-28 | PROCEDURE FOR MANAGING THE INTERFACE BETWEEN OIL AND WATER BY SLAM DRAINAGE FROM A Centrifuge for Separating Oil and Water and Sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1986001436A1 true WO1986001436A1 (en) | 1986-03-13 |
Family
ID=8130202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK1985/000085 Ceased WO1986001436A1 (en) | 1984-08-28 | 1985-08-28 | A method of controlling the interface between oil and water during discharge of sludge from a centrifuge for separation of oil and water and sludge |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0191095A1 (en) |
| DK (1) | DK410284A (en) |
| WO (1) | WO1986001436A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253799B (en) * | 1991-03-19 | 1994-11-16 | Westfalia Separator Ag | Self emptying centrifuge bowl |
| WO2006096113A1 (en) * | 2005-03-08 | 2006-09-14 | Alfa Laval Corporate Ab | A centrifugal separator |
| DE202007009212U1 (en) | 2007-06-30 | 2008-12-11 | Gea Westfalia Separator Gmbh | Three-phase Trennseparator |
| WO2009010630A1 (en) * | 2007-07-13 | 2009-01-22 | Wärtsilä Finland Oy | A method of using a separator and a separator |
| US7510519B2 (en) | 2003-08-08 | 2009-03-31 | Westfalia Separator Ag | Solid bowl screw centrifuge comprising a centripetal pump with a throtting device |
| EP2366457A1 (en) * | 2010-03-19 | 2011-09-21 | Alfa Laval Corporate AB | Device and method for monitoring and adjusting the radial position of an interface layer in a centrifugal separator |
| WO2012049119A1 (en) * | 2010-10-14 | 2012-04-19 | Gea Mechanical Equipment Gmbh | Phase-separation method for a product, using a centrifuge |
| US8192342B2 (en) | 2006-05-11 | 2012-06-05 | Westfalia Separator Ag | Separator having a liquid outlet including a throttling device |
| US8523749B2 (en) | 2005-06-14 | 2013-09-03 | Gea Mechanical Equipment Gmbh | Three-phase solid bowl screw centrifuge and method of controlling the separating process |
| US20140057772A1 (en) * | 2010-10-14 | 2014-02-27 | Gea Mechanical Equipment Gmbh | Phase-separation method for a product, using a centrifuge |
| US20150149098A1 (en) * | 2013-11-12 | 2015-05-28 | SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project, as such owners exist now and | Method of detecting and controlling e-line loss |
| US20170333915A1 (en) * | 2014-12-10 | 2017-11-23 | Gea Mechanical Equipment Gmbh | Separator |
| US11311021B2 (en) * | 2017-12-27 | 2022-04-26 | Tetra Laval Holdings & Finance S.A. | Concentrating fermented dairy products |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2814523A1 (en) * | 1978-04-04 | 1979-10-18 | Batyrev | Continuous cycle centrifugal separator control - measures liq. non-homogeneous mixt. flow rate and heavy-phase concn. and effects discharge when pre-set quantity of precipitate is reached |
| SE422416B (en) * | 1978-03-17 | 1982-03-08 | Batyrev R | PROCEDURE AND DEVICE FOR CONTROL OF A SEPARATOR |
| US4475897A (en) * | 1982-07-28 | 1984-10-09 | Westfalia Separator Ag | Method of and apparatus for optimizing the clarified phase and concentration of solids in a continuous solids-discharge centrifuge |
-
1984
- 1984-08-28 DK DK410284A patent/DK410284A/en unknown
-
1985
- 1985-08-28 EP EP19850904432 patent/EP0191095A1/en not_active Withdrawn
- 1985-08-28 WO PCT/DK1985/000085 patent/WO1986001436A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE422416B (en) * | 1978-03-17 | 1982-03-08 | Batyrev R | PROCEDURE AND DEVICE FOR CONTROL OF A SEPARATOR |
| DE2814523A1 (en) * | 1978-04-04 | 1979-10-18 | Batyrev | Continuous cycle centrifugal separator control - measures liq. non-homogeneous mixt. flow rate and heavy-phase concn. and effects discharge when pre-set quantity of precipitate is reached |
| US4475897A (en) * | 1982-07-28 | 1984-10-09 | Westfalia Separator Ag | Method of and apparatus for optimizing the clarified phase and concentration of solids in a continuous solids-discharge centrifuge |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253799B (en) * | 1991-03-19 | 1994-11-16 | Westfalia Separator Ag | Self emptying centrifuge bowl |
| US7510519B2 (en) | 2003-08-08 | 2009-03-31 | Westfalia Separator Ag | Solid bowl screw centrifuge comprising a centripetal pump with a throtting device |
| GB2438137B (en) * | 2005-03-08 | 2010-10-20 | Alfa Laval Corp Ab | A centrifugal separator |
| US7485084B2 (en) | 2005-03-08 | 2009-02-03 | Alfa Laval Corporate Ab | Apparatus and method for controlling the radial level of an interface in a centrifugal separator |
| GB2438137A (en) * | 2005-03-08 | 2007-11-14 | Alfa Laval Corp Ab | A centrifugal separator |
| WO2006096113A1 (en) * | 2005-03-08 | 2006-09-14 | Alfa Laval Corporate Ab | A centrifugal separator |
| US8523749B2 (en) | 2005-06-14 | 2013-09-03 | Gea Mechanical Equipment Gmbh | Three-phase solid bowl screw centrifuge and method of controlling the separating process |
| US8192342B2 (en) | 2006-05-11 | 2012-06-05 | Westfalia Separator Ag | Separator having a liquid outlet including a throttling device |
| DE202007009212U1 (en) | 2007-06-30 | 2008-12-11 | Gea Westfalia Separator Gmbh | Three-phase Trennseparator |
| WO2009003639A1 (en) * | 2007-06-30 | 2009-01-08 | Gea Westfalia Separator Gmbh | Three-phase separator |
| EP2162225A1 (en) * | 2007-06-30 | 2010-03-17 | GEA Westfalia Separator GmbH | Three-phase separator |
| US8628458B2 (en) | 2007-06-30 | 2014-01-14 | Gea Mechanical Equipment Gmbh | Three-phase separator having an overflow outlet for one phase and a centripetal pump for another phase |
| AU2008271581B2 (en) * | 2007-06-30 | 2013-01-10 | Gea Westfalia Separator Gmbh | Three-phase separator |
| WO2009010630A1 (en) * | 2007-07-13 | 2009-01-22 | Wärtsilä Finland Oy | A method of using a separator and a separator |
| CN102869450A (en) * | 2010-03-19 | 2013-01-09 | 阿法拉伐股份公司 | Device and method for monitoring and adjusting the radial position of an interface layer in a nozzle centrifuge |
| US8702576B2 (en) | 2010-03-19 | 2014-04-22 | Alfa Laval Corporate Ab | Device and method for monitoring and adjusting the radial position of an interface layer in a nozzle centrifuge |
| CN102869450B (en) * | 2010-03-19 | 2014-06-25 | 阿法拉伐股份公司 | Device and method for monitoring and adjusting the radial position of an interface layer in a nozzle centrifuge |
| WO2011113850A1 (en) * | 2010-03-19 | 2011-09-22 | Alfa Laval Corporate Ab | Device and method for monitoring and adjusting the radial position of an interface layer in a nozzle centrifuge |
| EP2366457A1 (en) * | 2010-03-19 | 2011-09-21 | Alfa Laval Corporate AB | Device and method for monitoring and adjusting the radial position of an interface layer in a centrifugal separator |
| US20140051563A1 (en) * | 2010-10-14 | 2014-02-20 | Wilfried Mackel | Phase-separation method for a product, using a centrifuge |
| US20140057772A1 (en) * | 2010-10-14 | 2014-02-27 | Gea Mechanical Equipment Gmbh | Phase-separation method for a product, using a centrifuge |
| WO2012049119A1 (en) * | 2010-10-14 | 2012-04-19 | Gea Mechanical Equipment Gmbh | Phase-separation method for a product, using a centrifuge |
| CN103153474A (en) * | 2010-10-14 | 2013-06-12 | Gea机械设备有限公司 | Phase-separation method for a product, using a centrifuge |
| US9463473B2 (en) | 2010-10-14 | 2016-10-11 | Gea Mechanical Equipment Gmbh | Phase-separation method for a product, using a centrifuge |
| US9561513B2 (en) * | 2010-10-14 | 2017-02-07 | Gea Mechanical Equipment Gmbh | Method for discharging a heavier liquid phase by adjusting a discharge radius based on a viscosity of the heavier liquid phase |
| US20150149098A1 (en) * | 2013-11-12 | 2015-05-28 | SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project, as such owners exist now and | Method of detecting and controlling e-line loss |
| US9400196B2 (en) * | 2013-11-12 | 2016-07-26 | Syncrude Canada Ltd. | Method of detecting and controlling E-line loss in a centrifuge |
| US20170333915A1 (en) * | 2014-12-10 | 2017-11-23 | Gea Mechanical Equipment Gmbh | Separator |
| US10780445B2 (en) * | 2014-12-10 | 2020-09-22 | Gea Mechanical Equipment Gmbh | Separator with inner and outer drum and one or more grippers having a disk portion and a shank portion |
| US11311021B2 (en) * | 2017-12-27 | 2022-04-26 | Tetra Laval Holdings & Finance S.A. | Concentrating fermented dairy products |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0191095A1 (en) | 1986-08-20 |
| DK410284D0 (en) | 1984-08-28 |
| DK410284A (en) | 1986-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1986001436A1 (en) | A method of controlling the interface between oil and water during discharge of sludge from a centrifuge for separation of oil and water and sludge | |
| RU2010611C1 (en) | Centrifugal separator | |
| US3448919A (en) | Automatic desludging apparatus | |
| KR960004196B1 (en) | Centrifuge and how it works | |
| US3825177A (en) | Self-dumping drum centrifuge for the clarification of liquids,equipped with a paring disk for removing the clarified liquid under pressure | |
| SE510541C2 (en) | Centrifugal separator control device | |
| EP0197063B1 (en) | Centrifugal separator | |
| US3047214A (en) | Centrifugal process and apparatus | |
| GB1491036A (en) | Centrifuges | |
| US4354632A (en) | Operating system for centrifuges | |
| US4164317A (en) | Centrifuge with automatic sludge discharge | |
| US4925442A (en) | Operating system for centrifugal separator | |
| US2723799A (en) | Centrifugal separation | |
| US4069969A (en) | Automatic three stage centrifugal sludge separator | |
| US3990632A (en) | Self-cleaning centrifugal separator with automatic control | |
| US3081028A (en) | Periodic sludge discharging centrifugal drum separators | |
| WO2009010630A1 (en) | A method of using a separator and a separator | |
| US4143806A (en) | Centrifugal separator | |
| US4643708A (en) | Centrifuge operating system | |
| JP4592934B2 (en) | Separator plate centrifuge and method for operating the same | |
| EP2170521A1 (en) | Method of using a separator and a separator | |
| JP4516175B2 (en) | Separator centrifuge | |
| JPS63252560A (en) | Centrifugal separator | |
| WO1996034693A1 (en) | Method and centrifugal separator for separation of two liquids | |
| EP4406657A1 (en) | Centrifugal separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): FI JP NO SU US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LU NL SE |