WO1993019851A1 - Appareil de separation de differents types de matieres de petite taille - Google Patents

Appareil de separation de differents types de matieres de petite taille Download PDF

Info

Publication number
WO1993019851A1
WO1993019851A1 PCT/EP1993/000778 EP9300778W WO9319851A1 WO 1993019851 A1 WO1993019851 A1 WO 1993019851A1 EP 9300778 W EP9300778 W EP 9300778W WO 9319851 A1 WO9319851 A1 WO 9319851A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
liquid
separation
lateral wall
equipment
Prior art date
Application number
PCT/EP1993/000778
Other languages
English (en)
Inventor
Flavio Previero
Original Assignee
Sorema S.R.L.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sorema S.R.L. filed Critical Sorema S.R.L.
Publication of WO1993019851A1 publication Critical patent/WO1993019851A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/36—Devices therefor, other than using centrifugal force
    • B03B5/38—Devices therefor, other than using centrifugal force of conical receptacle type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B03B2011/002—Rotary feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0231—Centrifugating, cyclones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
    • B29B2017/0244—Mechanical separating techniques; devices therefor using density difference in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to equipment for the separation of material of various kinds in small pieces or leaves, treated in a plant which uses water or another appropriate liquid as conveying fluid. This is the case which occurs, for example, in plants for the recycling of plastic ' material.
  • Equipment for the separation of material of various kinds in small pieces is already known, such as for example that described in the U.S.A. patent no. 4,483,768.
  • This patent relates to equipment consisting of a separation tank filled up to a predetermined level with a certain liquid, and of extremely simple devices for feeding into the tank material to be separated with a horizontal jet of material and conveying liquid at a pressure higher than that existing in the inlet area due to the weight of the mass of liquid contained in the tank.
  • the jet having these features is divided almost immediately into two vertical flows: an ascending flow for the material with lower specific weight than that of the mass of liquid contained in the tank and a descending flow for the material with higher specific weight respectively.
  • the position of the feed device varies according to the different possible specific weights of the components of the material.
  • the equipment comprises, finally, a first and second means for removing the material separated from the mass of liquid contained in the tank.
  • the two means are positioned at said predetermined Level and at the bottom of the tank respectively for the ejection of the components having Lower and higher specific weight respectively than that of the mass of liquid contained in the tank. It may occur, in some cases, that the separation between the various components of the material in the mass of liquid contained in the tank is not complete and that the ascending flow entrains not only the conveying liquid and the material of Lower specific weight, for example plastic material in small sheets, but also part of the material with higher specific weight, for example pollutants.
  • the main object of the following invention is therefore the improvement to the equipment described above in respect of efficiency of separation of the components of material with different specific weight.
  • this object is accomplished by means of equipment comprising a tank containing a certain Liquid up to a predetermined Level, a device for feeding the material to be separated together with a conveying Liquid of the same kind as that contained in the tank with a horizontal jet at a pressure higher than that of the liquid contained in the tank in the inlet area due to the weight of the mass of Liquid and means pLaced at the top and at the bottom of the tank for removing from the mass of Liquid the components of the material with Lower and higher specific weight respectively, characterised in that the device for feeding material and conveying Liquid into the separation tank is a hydraulic cyclone provided with a tangential inlet conduit.
  • a hydraulic cyclone as a feed device is justified by the fact that, as is known, said hydraulic cyclone is a device suitable for imparting a rotary motion to material in a liquid medium. Said rotary motion, in a manner likewise known, can facilitate, through a centrifugal action, the separation of material into its various components. In this particular case, the action of the hydraulic cyclone continues even when the material has already been discharged from the cyclone itself since the rotary motion is maintained in the mass of liquid contained in the tank with a consequent lengthening of the path of the material in the mass of liquid and a Lengthening of the separation phase, outside of the hydraulic cyclone, in the mass of liquid contained in the tank.
  • fig. 1 shows in axial section equipment according to the invention with a device for feeding material consisting of a first type of hydraulic cyclone
  • fig. 2 shows said equipment Sectioned transversely along line II-II of fig. 1
  • fig. 3 shows in axial section other equipment according to the invention with a device for feeding material consisting of a second type of hydraulic cyclone
  • fig. 4 shows said equipment sectioned transversely along line IV-IV of fig. 3.
  • the separation equipment illustrated in figs. 1 and 2 comprises a separation tank 1 designed to be filled with a Liquid 2 up to a predetermined Level L.
  • the tank 1 is related to a device 3 for feeding the material to be separated and a conveying liquid, which consists of a hydraulic cyclone 4 with vertical axis formed by an external lateral wall 5, whose upper part 6 is cylindrical and whose Lower part 7 is a truncated cone.
  • the hydraulic cyclone 4 internally, has a cylindrical sleeve 8 with vertical axis; said cylindrical sleeve 8 is open at the two bases, apertures 9 and 10, and is connected above to the lateral wall 5 of the cyclone 4 by means of an annular plate 11.
  • the hydraulic cyclone 4 is connected in its lower part to the internal space of the tank 1 via an aperture 12.
  • An inlet conduit 13 for the material and the conveying Liquid flows into the upper cylindrical part 6 of the external wall 5, and which in this case also has the function of supporting the cyclone 4; said conduit 13 is inserted tangentially in an annular space 14 defined by the upper part 6 of the Lateral wall 5 of the cyclone 4 and by said cylindrical sleeve 8.
  • a system 15 is positioned at the clear surface of the mass of liquid 2, Level L, for the removal of the material with lower specific weight, which comprises rollers 16 provided with blades 17 and rotatably supported by the external walls of the tank 2.
  • the rollers 16 are made to rotate by an electric motor 18. As shown by fig. 1, the rollers 16 are bLaded in such a way that their blades 17 dip into the liquid 2 to a Limited extent.
  • the system for ejecting heavy material consists of a variable flow rate pump 24 placed below the bottom of the tank 1.
  • the material and the conveying liquid (C) are fed into the separation tank 1 at a selected pressure which is higher than that of the mass of Liquid 2 by means of the feed device 3 consisting of the hydraulic cyclone 4 and the tangential conduit 13.
  • the material and the conveying liquid forced into the upper part of the hydraulic cyclone 4 are imparted, by means of the structure of the upper part of the cyclone (upper part 6 of the Lateral wall 5 and cylindrical sleeve 8), with a rotary motion for the purposes of separating the material.
  • the blades 17 of the rollers 16 of the system for removing lighter material 15 push the material out of the tank 1 towards the discharge conduit 21 together with a small quantity of Liquid, which is in turn discharged via the conduit 23 after having passed through the small apertures of the grating 22.
  • variable flow rate pump 24 serves to increase the efficiency of the separation equipment and allows, if necessary, the discriminating power of the separation equipment to be defined in terms such that only extremely light materials are allowed to float at the level L of the Liquid 2 in the tank 1.
  • the separation equipment shown in figs. 3 and 4 differs from that shown in figs. 1 and 2 only by the internal structure of the hydraulic cyclone 4.
  • the hydraulic cyclone 4 in this case has, internally, instead of a cylindrical sleeve, a vertical axis rotary body 25 with an upper cylindrical part 26 and a Lower truncated cone part 27 with radial blades 28.
  • the rotary body 25 is inserted on a shaft 29 supported by a motor 20.
  • the lateral wall 5, as moreover in the previous case, is supported by the tangential inlet conduit 13.
  • the annular space 31 defined by the lateral wall 5 and by the rotary body 25 is connected to the internal space of the tank 1 both above and below to enable the formation of the two vertical flows (A 1 and A") previously mentioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Cyclones (AREA)

Abstract

Appareil de séparation de matières de petite taille. Il comporte un réservoir de séparation (1) pouvant se remplir d'un liquide jusqu'à une hauteur prédéterminée (L), un dispositif à cyclone hydraulique (3) d'introduction dans le réservoir (1) des matières à séparer et du liquide sans dépasser la hauteur prédéterminée, et à une pression supérieure à celle de la zone d'entrée due au poids de la masse liquide comprise dans le réservoir, et des premier et second dispositifs servant à expulser les matières du réservoir (21, 24) et étant situés respectivement à ladite hauteur prédéterminée et au fond du réservoir (1) afin qu'ils évacuent les matières ayant respectivement un poids volumique moins élevé et un poids volumique plus élevé que celui du liquide contenu dans le réservoir.
PCT/EP1993/000778 1992-04-01 1993-03-26 Appareil de separation de differents types de matieres de petite taille WO1993019851A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI92A000784 1992-04-01
IT92MI784 IT1255075B (it) 1992-04-01 1992-04-01 Apparecchio per la separazione di materiale di varia natura di piccola pezzatura o in foglie

Publications (1)

Publication Number Publication Date
WO1993019851A1 true WO1993019851A1 (fr) 1993-10-14

Family

ID=11362737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000778 WO1993019851A1 (fr) 1992-04-01 1993-03-26 Appareil de separation de differents types de matieres de petite taille

Country Status (3)

Country Link
AU (1) AU3890993A (fr)
IT (1) IT1255075B (fr)
WO (1) WO1993019851A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29614456U1 (de) * 1996-08-21 1996-11-14 Feierabend Andreas Vorrichtung zum Reinigen und Abtrennen von Sand aus einem Sand/Flüssigkeitsgemisch, insbesondere Sand/Wassergemisch
WO1997016253A2 (fr) * 1995-11-02 1997-05-09 Allmineral Aufbereitungstechnik Gmbh & Co. Kg Separateur des matieres legeres du sable et du gravier
EP1002563A1 (fr) * 1998-11-17 2000-05-24 FirstEnergy Ventures Procédé et dispositif pour separer des particules de décantation rapide de particules de décantation lente
WO2004000464A1 (fr) * 2002-06-19 2003-12-31 Outokumpu Oyj Pre-separation de materiau de charge pour separateur a lit articule
EP2070602A1 (fr) * 2007-12-11 2009-06-17 Vapormatt Limited Ensemble de séparation de particules
JP2012196612A (ja) * 2011-03-18 2012-10-18 Mitsubishi Electric Corp 比重選別装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594229A (en) * 1944-01-24 1947-11-06 Harry Lee Mcneill Method of and apparatus for the separation of solids in liquids
GB962386A (en) * 1963-04-08 1964-07-01 Insinooritoimisto Engineeringb An improved hydraulic classifier
GB2050201A (en) * 1979-05-21 1981-01-07 English Clays Lovering Pochin Process for concentrating mica
US4483768A (en) * 1979-10-11 1984-11-20 Sorema S.R.L. Apparatus for separating materials of small size
DE3529760A1 (de) * 1985-08-20 1987-02-26 Strate Maschf Sandfang zur abscheidung von sinkstoffen aus abwasser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594229A (en) * 1944-01-24 1947-11-06 Harry Lee Mcneill Method of and apparatus for the separation of solids in liquids
GB962386A (en) * 1963-04-08 1964-07-01 Insinooritoimisto Engineeringb An improved hydraulic classifier
GB2050201A (en) * 1979-05-21 1981-01-07 English Clays Lovering Pochin Process for concentrating mica
US4483768A (en) * 1979-10-11 1984-11-20 Sorema S.R.L. Apparatus for separating materials of small size
DE3529760A1 (de) * 1985-08-20 1987-02-26 Strate Maschf Sandfang zur abscheidung von sinkstoffen aus abwasser

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997016253A2 (fr) * 1995-11-02 1997-05-09 Allmineral Aufbereitungstechnik Gmbh & Co. Kg Separateur des matieres legeres du sable et du gravier
WO1997016253A3 (fr) * 1995-11-02 1997-07-03 Allmineral Aufbereitungstech Separateur des matieres legeres du sable et du gravier
AU701460B2 (en) * 1995-11-02 1999-01-28 Allmineral Aufbereitungstechnik Gmbh & Co. Kg Apparatus for separating off light materials from sand and gravel
US6036028A (en) * 1995-11-02 2000-03-14 Allmineral Aufbereitungstechnik Gmbh & Co. Kg Apparatus for separating off light materials from sand and gravel
DE29614456U1 (de) * 1996-08-21 1996-11-14 Feierabend Andreas Vorrichtung zum Reinigen und Abtrennen von Sand aus einem Sand/Flüssigkeitsgemisch, insbesondere Sand/Wassergemisch
EP1002563A1 (fr) * 1998-11-17 2000-05-24 FirstEnergy Ventures Procédé et dispositif pour separer des particules de décantation rapide de particules de décantation lente
WO2004000464A1 (fr) * 2002-06-19 2003-12-31 Outokumpu Oyj Pre-separation de materiau de charge pour separateur a lit articule
GB2404884A (en) * 2002-06-19 2005-02-16 Oyj Outokumpu Pre-separation of feed material for hindered-bed separator
GB2404884B (en) * 2002-06-19 2005-11-16 Oyj Outokumpu Pre-separation of feed material for hindered-bed separator
EP2070602A1 (fr) * 2007-12-11 2009-06-17 Vapormatt Limited Ensemble de séparation de particules
EP2070603A1 (fr) * 2007-12-11 2009-06-17 Vapormatt Limited Ensemble de séparation de particules
US8197679B2 (en) 2007-12-11 2012-06-12 Vapormatt Limited Particle separation assembly
JP2012196612A (ja) * 2011-03-18 2012-10-18 Mitsubishi Electric Corp 比重選別装置

Also Published As

Publication number Publication date
ITMI920784A0 (it) 1992-04-01
ITMI920784A1 (it) 1993-10-01
IT1255075B (it) 1995-10-18
AU3890993A (en) 1993-11-08

Similar Documents

Publication Publication Date Title
US5370600A (en) Apparatus for separating lighter and heavier components of a mixture employing a removable liner
US5522999A (en) Water clarification method
RU2129586C1 (ru) Способ отделения нефти от частиц, покрытых нефтью, устройство для его осуществления и сепаратор для выделения твердых частиц
US8794448B2 (en) Separation device
CA2529839C (fr) Cellule de flottation verticale a induction gazeuse
US6730222B1 (en) Hydrodynamic vortex separator
US5641397A (en) Device for separating inorganic material polluted by organic material from a fluid
ATE146065T1 (de) Abscheider fester partikel für den variablen abzug von flüssigkeitsströmen in einem zahnärztlichen apparat
US4341630A (en) Arrangement for separation of a suspension or emulsion from liquids by flotation
AU615728B2 (en) Settling vessel for an activated-sludge/sewage suspension
EP0574364B1 (fr) Centrifugeuse pour la séparation d'huile de suspensions huileuses, travaillant sans addition d'eau potable
GB2070466A (en) Separator for the separation of a mixture of a cellulose pulp suspension and coarse heavy particles
WO1993019851A1 (fr) Appareil de separation de differents types de matieres de petite taille
JPH0330402B2 (fr)
US4163723A (en) Continuously operated liquid-solids separator
US3687286A (en) Centrifugal force separator or classifier
WO1987004944A1 (fr) Procede et appareil de separation par gravite d'un milieu en differents composants
US3288286A (en) Centrifugal type separator
EP1675666B1 (fr) Collecteur de sable
US4804471A (en) Oil-water separator
WO2000002637A1 (fr) Appareil permettant de separer des fluides immiscibles et procede afferent
JPH07508453A (ja) 材料を分離するための装置
JP3067893B2 (ja) 製紙用紙料のスクリーニング装置
WO2013173852A1 (fr) Séparateur et procédé de traitement d'un liquide contaminé
US5322169A (en) Flotation cyclone

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA