EP0764055A1 - Pollution separating and purifying apparatus for at least one fluid mixture - Google Patents
Pollution separating and purifying apparatus for at least one fluid mixtureInfo
- Publication number
- EP0764055A1 EP0764055A1 EP95923367A EP95923367A EP0764055A1 EP 0764055 A1 EP0764055 A1 EP 0764055A1 EP 95923367 A EP95923367 A EP 95923367A EP 95923367 A EP95923367 A EP 95923367A EP 0764055 A1 EP0764055 A1 EP 0764055A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- plates
- annular space
- mixture
- fluid mixture
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 52
- 239000012530 fluid Substances 0.000 title claims abstract description 32
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 230000009919 sequestration Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 description 16
- 239000002245 particle Substances 0.000 description 15
- 239000012535 impurity Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
- B04B2005/125—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers the rotors comprising separating walls
Definitions
- the invention relates to an apparatus for separating and purifying pollution from at least one fluid mixture comprising:
- an inlet member for the fluid mixture to be treated in a fixed cylindrical body - a rotor, mounted in this cylindrical body and having a stack of at least two perforated plates extending radially towards the wall of said cylindrical body, a annular space remaining between the periphery of the plates and the wall of the cylindrical body, said rotor cooperating with means generating a pressure drop at the top of the apparatus, and generating an upward helical movement of the mixture to be treated, the direction of rotation is the same as that of the rotor,
- a hopper for collecting the heavy phase connected to the cylindrical body under the rotor and provided with a forced evacuation means isolated from the outside, - a member for extracting the treated mixture, connected to the cylindrical body above rotor.
- fluid mixture generally designates a gaseous or liquid mixture polluted by solid, liquid or mixed impurities.
- inlet member is located under the rotor and above the collection hopper, give fairly good results and make it possible to eliminate almost completely the impurities whose dimensions are of the order of 3 microns or more. However, they remain relatively unsuitable for the separation of smaller impurities. It has been found that, in these devices, a fraction of the fluid mixture tends to flow in the annular space and to carry upwards, and therefore towards the extraction member, the smallest impurities.
- FIG. 1 schematically represents, from a given starting point A, the trajectories of particles of different dimensions, in an apparatus comprising a rotor provided with plates 1 and mounted in a body fixed cylindrical 2.
- the lowest trajectories designated by the references tj and t2, relate to impurities whose dimensions are respectively of the order of 5 microns and 3 microns. These impurities, subjected to the centrifugal field prevailing in the apparatus, are entrained towards the wall of the cylindrical body 2, against which they will then descend to the collection hopper to be effectively separated from the fluid mixture.
- the references t3 to ti j designate, from bottom to top, the trajectories of impurities whose dimensions are less than 3 microns and go decreasing, the trajectory ti j relating more precisely to the particles whose dimensions are of the order of 0 , 2 microns.
- the particles are effectively deflected under the effect of the centrifugal field (this effect being less and less felt as the size of the particles decreases), but are carried upwards by the fraction of the fluid mixture which flows in the annular space 3, so that it in fact escapes centrifugal separation.
- the present invention proposes to overcome these drawbacks of existing devices to achieve significantly higher degrees of separation.
- the inlet member is located between the rotor and the extraction member, and comprises an annular chamber having a closed upper end and an open lower end connected to the annular space, an inlet for the mixture to treating in said annular chamber, and a central column having open upper and lower ends, while the apparatus comprises means for generating, in the annular space, a downward helical movement of the same direction of rotation as said upward helical movement.
- this new design does not attempt to modify or arrange the annular space in order to avoid the upwelling, but aims to use it to create a downward helical movement.
- the fluid mixture entering the device is first subjected to the helical movement down to the bottom of the rotor, then rises in the upward helical movement through the openings of the plates of this rotor, and passes through the central column of the input member before leaving purified by the extraction member.
- This flow comprising a downward peripheral helical movement and a central upward helical movement, the speed of rotation of which is greater than that of the preceding one, corresponds to a conventional cyclonic flow, which the invention makes it possible to control and to use for separation centrifugal.
- the final centrifugal separation is carried out in the central upward helical movement. Its very high speed of rotation makes it possible to separate the smaller particles which settle on the plates and are entrained towards the periphery of the rotor, and therefore towards the annular space. They can then aggregate with the particles already separated and be dragged down to be collected in the collection hopper. Certain very small particles, if they remain unaggregated, and if they are not separated during the intermediate separation step which may be provided, will be recycled in the helical movement where they will again be subjected to the centrifugal separation process.
- the downward helical movement therefore has a double effect, since it makes it possible not only to avoid the ascent of the particles in the annular space, but also to carry out a first separation of the fluid mixture as soon as it enters the device.
- the means for generating the downward helical movement comprises a helical distributor, having a plurality of blades fixed obliques and arranged in the upper part of the annular space, and means for guiding the fluid mixture in this annular space, associated with the rotor.
- the helical distributor accelerates the fluid mixture entering the device, the inclination of the oblique blades being determined so as to give the flow a tangential speed adapted to the speed of rotation of the rotor and to avoid the appearance of turbulence in annular space.
- the apparatus comprises a sequestration member mounted fixed in the cylindrical body, under the rotor and above the collection hopper, and which comprises a plurality of radial blades, extending from a region close to the wall of the cylindrical body to a central region and raised relative to a plane perpendicular to the axis of the rotor, in the direction opposite to the direction of rotation of said rotor.
- a sequestration member mounted fixed in the cylindrical body, under the rotor and above the collection hopper, and which comprises a plurality of radial blades, extending from a region close to the wall of the cylindrical body to a central region and raised relative to a plane perpendicular to the axis of the rotor, in the direction opposite to the direction of rotation of said rotor.
- the mixture emerging from the downward helical movement and approaching the upward helical movement forms a vortex in the part of the cylindrical body of the device located under the rotor.
- the sequestration unit makes it possible to use this vortex to carry
- FIG. 2 is a longitudinal section of an apparatus according to the invention
- FIG. 3a is a top view of the helical distributor
- FIG. 3b is a developed section of the same helical distributor
- FIG. 4a is a top view of the sequestration member
- FIG. 4b is a developed section of this sequestration organ
- FIG. 5a is a half top view of a plate of the rotor according to a first variant
- FIG. 5b is a side view of the plate of FIG. 5a
- FIG. 6 schematically shows a stack of plates according to this variant
- - Figure 7a is a top view of a plate according to another variant
- - Figure 7b is a side view of the plate of Figure 7a
- FIG. 8 is a longitudinal section of a part of the apparatus equipped with a washing device and a cooling device.
- the general reference 10 in FIG. 2 designates a device for separating and purifying the pollution of at least one fluid mixture according to the invention.
- This device comprises a cylindrical body 12, a member 14 for entering the fluid mixture into the fixed cylindrical body 12, a rotor 16, mounted in the cylindrical body 12 and having a stack of at least two perforated plates 18 which are extend radially towards the wall of the cylindrical body 12, while leaving an annular space 20 between the periphery of the plates and said wall.
- the rotor 16 cooperates with means generating a pressure drop at the top of the device 10.
- This rotor whose direction of rotation is indicated by the arrow R, generates an upward helical movement of the mixture to be treated in the same direction of rotation.
- the apparatus further comprises a hopper 22 for collecting the separate heavy phase, this hopper being connected to the cylindrical body 12 under the rotor 16 and being provided with a means 24 of forced evacuation isolated from the outside.
- the apparatus also comprises a member 26 for extracting the treated mixture, connected to the cylindrical body 12 above the rotor 16.
- the extraction member 26 is located at the top of the device, but the means for generating the pressure drop and the means for driving the rotor in rotation are located above this member 26 since, as indicated by the line L in dashed lines, the whole of the upper part of the apparatus is not represented.
- the collection hopper is located at the bottom of the device 10.
- the inlet member 14 is located between the rotor 16 and the extraction member 26.
- This inlet member 14 has an annular chamber 28, the upper end 28a of which is closed, while the lower end 28b is open and is connected to the annular space 20.
- the member 14 also has an inlet 30 for the mixture to be treated, which opens into the annular chamber 28.
- the member 14 also has a central column 32 which is separated from the annular chamber 28 by a cylindrical wall 34.
- the central column 32 has an upper end 32a open and a lower end 32b also open.
- the apparatus includes means for generating, in the annular space
- the arrows F symbolize the general direction of circulation of a mixture in the apparatus 10. These arrows F do not, however, take account of the centrifugal fields giving rise to separation.
- the means for generating the downward helical movement comprise a helical distributor 36, disposed in the upper part of the annular space 20, that is to say just below the annular chamber 28, and means for guiding the fluid mixture in the annular space 20, associated with the rotor, which will be explained below.
- the helical distributor 36 shown in FIGS. 3a and 3b, is in the form of an annular element fixed to the wall of the cylindrical body 12, and comprises a plurality of fixed oblique blades designated by the general reference 38.
- the oblique blade 38a extends over the sum of the angular sectors a and b.
- On the angular sector b it is located under the following oblique blade 38b.
- the oblique blades are therefore arranged in a slight axial overlap.
- FIG. 3b it can be seen that passing the mixture rotating in the direction R between the oblique blades 38 accelerates the latter and gives its tangential speed a component down.
- the inclination of the oblique blades is calculated so that this tangential speed of rotation is adapted to that of the rotor.
- the means for guiding the fluid mixture in the annular space 20 are better visible in FIGS. 2 and 8. They comprise a fixed ring 40 disposed between the lower end of the internal wall 34 of the annular chamber 28 and the periphery of the upper plate 18a of the rotor 16. It can moreover be seen that the helical distributor 36 is placed at the level of this ring 40. These guide means further comprise peripheral skirts 42 which equip the periphery of the plates 18 of the rotor 16. If the 'We consider one of the rotor plates, for example the plate 18b, we see that the peripheral skirt 42b which the team extends downward at least to the axial height of the periphery of the plate 18c immediately located under plate 18b. This is of course not detectable on the lower plate 18d, the skirt of which can however be produced in a similar manner to that of the other plates.
- the fixed ring 40 and the skirts 42 play the role of deflectors which naturally lead the gas mixture to flow downwards rather than to rise between the plates.
- the plates 18 of the rotor have the shape of cones open downwards.
- the peripheral skirts 42 also have the shape of cones open at the bottom, the angle of which at the top is however less than that of the plates.
- the apparatus makes it possible to carry out a centrifugal pre-separation in the annular space 20 and a final centrifugal separation in the central part. It may also make it possible to carry out an intermediate step of separation in the space 44 which is located in the cylindrical body 12, below the rotor 16 and above the collection hopper 22.
- the device comprises a sequestration member 46 fixedly mounted in the cylindrical body 12 and at the lower part of the space 44.
- This sequestration member 46 shown in more detail in FIGS. 4a and 4b, comprises a plurality of radial blades 48 which extend from a region close to the wall of the body 12 to a central region and are raised relative to a plane P perpendicular to the axis I of the rotor 16, in the opposite direction to the direction of rotation R of said rotor.
- the inclination direction of these blades 46 allows them to trap particles entrained in the lower part of the vortex which occurs in space 44, and to entrain them towards the hopper 22.
- the sequestration member 46 can for example be fixed on a fixed sleeve mounted on a bearing for holding the rotor shaft. According to another variant, illustrated by FIGS.
- the blades 48 are integral with a disc 50 having perforated sectors 52.
- the blades 48 are fixed on one of the radial edges of the sectors 52, raised relative to the disc $ 0 and extend beyond the other radial edge of sector 52.
- the disc 50 can be fixed on the wall of the cylindrical body 12, in which case its periphery has recesses 54 allowing the free passage of the impurities collected along the wall 12 as far as the hopper 22.
- the sequestration member 46 is fixed inside a trapping cylinder 56, and in the lower part of the latter.
- This trapping cylinder 56 is parallel to the cylindrical body 12 and mounted in the space 44 while preserving a radial clearance j relative to the wall of the cylindrical body 12.
- the separated particles descending along the wall of the body 12 are thus trapped in the space provided by the clearance j between the wall of the cylinder 56 and that of the body 12 and descend into the collection hopper 22 without risking being recirculated in the fluid mixture.
- the openings in the plates consist of slots 58 which have two radial edges 59, as well as an outer edge 60 and an inner edge 61 which extend substantially along the circumference of the plates 18. Still in one or other of the two variants, the outer peripheral edge 60 of the slots 58 is equipped with a flange directed upwards.
- this rim is designated by the reference 62 and is constituted by an upward fold of a tongue formed during the cutting of the slots 58.
- the flanges equipping each of the slots of the same plate 18 are constituted by portions of the same annular deflector 64 secured to the upper face of this plate.
- This deflector 64 comprises a part 64a parallel to the surface of the plates and fixed on these plates for example by means of welding points, and a raised part 64b.
- the peripheral skirts 42 of the plates 18 and the flanges 62 or 64b of the slots 58 of these plates are advantageously directed in substantially parallel directions.
- the edges contribute to guiding the fluid mixture in the annular space 20 and a semi-continuous wall is obtained formed by the ring 40, the edges and the skirts.
- skirt 42 of a given plate extends downward at least to the level of the periphery of the immediately lower plate, in fact, the skirts 42 may even be in slight overlap with respect to each other. to others.
- the device may include an outer jacket 70, disposed around a part of the cylindrical body 12 and which, with the wall of said body 12, delimits an enclosure 72.
- Means are used to circulate a fluid cooling means in this enclosure 72. These means comprise, for example, a nozzle 74 for injecting the cooling liquid, disposed at the upper part of the enclosure 72, and a lower outlet 76 for the liquid.
- the coolant cools the wall of the cylindrical body 12, which makes it possible to cool the fluid mixture circulating in the device thanks to the convection phenomena which are increased as a result of the existence of the centrifugal field which prevails. in the device.
- the outer jacket 70 can cover part of the body 12 or all of it.
- the shaft 15 of the rotor 16 is held in its lower part by a bearing 78.
- the fluid mixture which can be relatively hot, circulates in the vicinity of the bearing 78, the latter can heat up.
- the enclosure 72 below the bearing 78 can provide in the latter the circulation channels for the cooling fluid.
- Another advantageous arrangement consists in using the annular space 20 to carry out a final washing of the fluid mixture therein.
- the device comprises means for injecting a washing liquid into the annular space 20, in the vicinity of its upper end, directly below the helical distributor 36.
- These means consist, for example, of injection nozzles 80 washing liquid regularly distributed around the circumference of the upper part of the annular space 20. The washing liquid will entrain the separated impurities in the annular space 20 as far as the collecting hopper 22.
- the radial dimensions ri of the central column 32 of the input member 14 are substantially equal to the extreme radial dimensions of the openings in the rotor 16.
- the upward helical movement thus circulates in a column whose the radius remains substantially constant from the bottom of the rotor 16 to the top of the central column 32.
- the radius r being significantly less than the radius _2 of the cylindrical body 12, which corresponds to the radius of the downward helical movement, the fluid mixture is strongly accelerated tangentially from this downward helical movement to the upward helical movement.
- the radial dimensions of the spaces for circulation of the fluid mixture formed in the elements of the apparatus 10 which are located above the inlet member 14 are advantageously at most equal to those of the central column 32.
Landscapes
- Extraction Or Liquid Replacement (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9407057A FR2720958B1 (en) | 1994-06-09 | 1994-06-09 | Apparatus for separating and purifying pollution from at least one fluid mixture. |
FR9407057 | 1994-06-09 | ||
PCT/FR1995/000759 WO1995033572A1 (en) | 1994-06-09 | 1995-06-09 | Pollution separating and purifying apparatus for at least one fluid mixture |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0764055A1 true EP0764055A1 (en) | 1997-03-26 |
EP0764055B1 EP0764055B1 (en) | 1998-08-26 |
Family
ID=9464039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95923367A Expired - Lifetime EP0764055B1 (en) | 1994-06-09 | 1995-06-09 | Pollution separating and purifying apparatus for at least one fluid mixture |
Country Status (6)
Country | Link |
---|---|
US (1) | US5851396A (en) |
EP (1) | EP0764055B1 (en) |
AT (1) | ATE170107T1 (en) |
DE (1) | DE69504340T2 (en) |
FR (1) | FR2720958B1 (en) |
WO (1) | WO1995033572A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2768067A1 (en) * | 1997-09-08 | 1999-03-12 | Pierre Saget | APPARATUS FOR SEPARATING AND PURIFYING POLLUTION FROM AT LEAST ONE FLUID MIXTURE |
CN1090591C (en) * | 1998-11-24 | 2002-09-11 | 梁维安 | Vortex equipment for treating sewage |
US6183641B1 (en) * | 1999-01-08 | 2001-02-06 | Fantom Technologies Inc. | Prandtl layer turbine |
EP1173268A4 (en) * | 1999-03-24 | 2003-01-02 | Environmental Separation Techn | A separator |
US6544416B2 (en) * | 2000-04-26 | 2003-04-08 | Marine Biotech Inc. | Systems and methods for separating solids from a fluid environment |
US6485854B1 (en) * | 2000-10-19 | 2002-11-26 | General Motors Corporation | Gas-liquid separator for fuel cell system |
US20040144717A1 (en) * | 2003-01-29 | 2004-07-29 | Sheng Henry P. | Apparatus for separating immiscible liquids |
SE527719C2 (en) * | 2004-06-16 | 2006-05-23 | 3Nine Ab | Rotor unit for a centrifugal separator |
FR2879942B1 (en) * | 2004-12-27 | 2007-01-26 | Commissariat Energie Atomique | DEVICE FOR PURIFYING A GAS STREAM CONTAINING CONDENSABLE VAPORS |
SE529611C2 (en) | 2006-02-13 | 2007-10-02 | Alfa Laval Corp Ab | centrifugal |
SE530690C2 (en) | 2006-04-04 | 2008-08-12 | Alfa Laval Corp Ab | Rotor unit for a centrifugal separator |
SE531722C2 (en) * | 2007-08-28 | 2009-07-21 | Alfa Laval Tumba Ab | Centrifugal separator and process for purifying a gas |
EP2205361A1 (en) * | 2007-10-15 | 2010-07-14 | Atlas Copco Drills Ab | Device and method for separating particles out from a fluid |
EP2664385B1 (en) * | 2012-05-14 | 2017-03-01 | Alfa Laval Corporate AB | A disc package for a centrifugal separator |
DE102014220158A1 (en) * | 2014-10-06 | 2016-04-07 | Elringklinger Ag | separating |
EP3207996B1 (en) * | 2016-02-22 | 2019-05-08 | Alfa Laval Corporate AB | A centrifuge rotor for a centrifugal separator, a centrifugal separator, a method of separation, and a conical disk |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2175528A1 (en) * | 1972-03-13 | 1973-10-26 | Enfer Et Fils | Centrifugal gas cleaner - to remove solid or liquid particles from gas drawn through hollow perforated rotor |
FR2267153A2 (en) * | 1974-04-09 | 1975-11-07 | Saget Pierre | Separator for mixtures of different phases - incorporating rotating discs with staggered holes efficient with small density differences |
US4071188A (en) * | 1976-08-23 | 1978-01-31 | Mikhail Egorovich Afonin | Centrifugal separator for treating liquids |
FR2468410B1 (en) * | 1979-10-31 | 1985-06-21 | Saget Pierre | CENTRIFUGAL SEPARATION PROCESS AND APPARATUS FOR IMPLEMENTING IT APPLICABLE TO A MIXTURE OF PHASES OF ANY STATE |
FR2522528B1 (en) * | 1982-03-03 | 1987-05-07 | Saget Pierre | IMPROVED APPARATUS FOR CENTRIFUGAL SEPARATION OF A MIXTURE COMPRISING AT LEAST ONE GASEOUS PHASE |
US4729760A (en) * | 1985-01-07 | 1988-03-08 | Pierre Saget | Apparatus for the centrifugal separation of a mixture of phases |
FR2575677B1 (en) * | 1985-01-08 | 1987-03-20 | Saget Pierre | CENTRIFUGAL SEPARATOR FOR THE TREATMENT OF A MIXTURE COMPRISING AT LEAST ONE GASEOUS PHASE, WITH FORCED HEAVY PHASE COLLECTION |
FR2666031B1 (en) * | 1990-08-27 | 1993-10-22 | Pierre Saget | PROCESS FOR THE CENTRIFUGAL SEPARATION OF THE PHASES OF A MIXTURE AND CENTRIFUGAL SEPARATOR WITH LONGITUDINAL BLADES USING THIS PROCESS. |
US5229014A (en) * | 1991-12-18 | 1993-07-20 | Vortech International, Inc. | High efficiency centrifugal separation apparatus and method using impeller |
-
1994
- 1994-06-09 FR FR9407057A patent/FR2720958B1/en not_active Expired - Fee Related
-
1995
- 1995-06-09 EP EP95923367A patent/EP0764055B1/en not_active Expired - Lifetime
- 1995-06-09 DE DE69504340T patent/DE69504340T2/en not_active Expired - Fee Related
- 1995-06-09 WO PCT/FR1995/000759 patent/WO1995033572A1/en active IP Right Grant
- 1995-06-09 AT AT95923367T patent/ATE170107T1/en not_active IP Right Cessation
-
1996
- 1996-12-09 US US08/750,366 patent/US5851396A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9533572A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2720958B1 (en) | 1996-08-30 |
DE69504340D1 (en) | 1998-10-01 |
WO1995033572A1 (en) | 1995-12-14 |
EP0764055B1 (en) | 1998-08-26 |
US5851396A (en) | 1998-12-22 |
ATE170107T1 (en) | 1998-09-15 |
FR2720958A1 (en) | 1995-12-15 |
DE69504340T2 (en) | 1999-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0764055B1 (en) | Pollution separating and purifying apparatus for at least one fluid mixture | |
FR2522528A1 (en) | IMPROVED APPARATUS FOR CENTRIFUGAL SEPARATION OF A MIXTURE COMPRISING AT LEAST ONE GAS PHASE | |
FR2826058A1 (en) | SUCTION DEVICE FOR THE COMBUSTION AIR OF A THERMAL ENGINE OF A HAND-OPERATED TOOL | |
FR2483801A1 (en) | APPARATUS AND METHOD FOR CLEANING OR PURIFYING CENTRIFUGAL FLUID CURRENT | |
EP0028996A1 (en) | Centrifugal separators of the cyclonic type | |
FR2666031A1 (en) | Process for the centrifugal separation of the phases of a mixture, and centrifugal separator having longitudinal blades implementing this process | |
EP0340087B1 (en) | Centrifugal separation apparatus provided with a device for the retention of the heavy phase | |
US3563454A (en) | Method of and apparatus for separating the various phases of a fluid mixture | |
FR2589755A1 (en) | METHOD AND DEVICE FOR SEPARATING DIFFERENT PHASES FROM MULTI-PHASE FLOWING MEDIA | |
EP1152967B1 (en) | Device for dispersing a divided solid material inside a receptacle | |
FR2496497A1 (en) | AUTOMATIC PURGE CENTRIFUGE | |
EP0537328B1 (en) | Multi-stage centrifugal extraction apparatus | |
FR2630658A1 (en) | Process and device for separating products of different densities, especially particles suspended in a fluid | |
EP1011872A1 (en) | Apparatus for separating and purifying polluting agents from at least one fluid mixture | |
EP0553022A1 (en) | Device for forcefully withdrawing the heavy phase in a centrifugal separation apparatus | |
FR2846257A1 (en) | Separator and purifier from pollution of at least one fluid mixture using helical upward and downward movement to separate heavy phase from mixture | |
EP0623374B1 (en) | Centrifugal separator for fluids | |
EP3174637B1 (en) | Cyclone device comprising two cyclones connected by an optimised pipe system | |
JPS63283771A (en) | Centrifugal separating method and device for plural phase mixture | |
FR2575677A1 (en) | Centrifuge separator apparatus for the treatment of a mixture comprising at least one gaseous phase, with forced collection of the heavy phase | |
FR2535216A1 (en) | Improved apparatus for the centrifugal separation of a mixture containing at least one gaseous phase in which the improvements stem from nonreturn of the heavy phase which has reached the periphery. | |
CH283735A (en) | Process for treating a bulk product and apparatus for carrying out this process. | |
BE454529A (en) | ||
FR2714850A1 (en) | Device for separating and removing pollution from gaseous mixt. | |
BE332237A (en) |
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: 19961123 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE GB IT NL SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19970903 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE GB IT NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19980826 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19980826 |
|
REF | Corresponds to: |
Ref document number: 170107 Country of ref document: AT Date of ref document: 19980915 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 69504340 Country of ref document: DE Date of ref document: 19981001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19981126 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981130 |
|
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: NL Payment date: 19991130 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19991229 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20000629 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000802 Year of fee payment: 6 |
|
BERE | Be: lapsed |
Owner name: SAGET PIERRE LAURENT Effective date: 20000630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010101 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20010101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010609 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010609 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020403 |