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WO1993023169A1 - Procede et dispositif de separation de matieres plastiques pulverisees de densite variable - Google Patents

Procede et dispositif de separation de matieres plastiques pulverisees de densite variable Download PDF

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Publication number
WO1993023169A1
WO1993023169A1 PCT/EP1993/001188 EP9301188W WO9323169A1 WO 1993023169 A1 WO1993023169 A1 WO 1993023169A1 EP 9301188 W EP9301188 W EP 9301188W WO 9323169 A1 WO9323169 A1 WO 9323169A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
channel
plastics
basin
container
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
Application number
PCT/EP1993/001188
Other languages
German (de)
English (en)
Inventor
Herbert Opfer
Wolfgang Lucius
Wolfgang Lampe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP93909974A priority Critical patent/EP0593727A1/fr
Publication of WO1993023169A1 publication Critical patent/WO1993023169A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
    • 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
    • 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
    • B03B5/40—Devices therefor, other than using centrifugal force of trough type
    • 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 invention relates to a method for separating comminuted plastics of different densities with the aid of a flow and to a device for carrying out the method.
  • a low inflow velocity is intended to prevent the heavier components from being lifted, so that they sink to the bottom of the pool, while the lighter plastic materials on the surface are transported by means of the paddle wheel to the end of the pool and be removed from there.
  • a safe separation of the heavy plastics from the light plastics is not guaranteed, since the light plastics and the heavier plastics are often
  • REPLACEMENT LEAF fig stick to each other, so that the heavier plastics take the lighter plastics with them as they sink and there is therefore no separation.
  • the invention is therefore based on the object of achieving a method and a device for separating comminuted plastic particles of different densities with the aid of a flow, with which a reliable separation of different plastics is achieved.
  • This object is achieved according to the invention in that a mixture of liquid and crushed plastic materials of different densities is fed to a separation basin or the like, that in a channel or flow basin arranged in the separation basin, flows are distributed over their length by supplying liquid in at least two vertical planes are generated, and that the liquid-plastic mixture after passing through the separation basin is introduced into a collecting container in which the lighter plastics floating in the area of the liquid surface are removed or collected in a separate container section, while the heavier ones Plastic sink to the bottom of the container and be removed from there.
  • the mixture of comminuted plastic materials and liquid is swirled through in a swirling stage before entering the separation basin in order to free the plastic particles from adhering foreign substances such as e.g. To separate air.
  • the device for carrying out the method is characterized in that a channel is formed in a separation basin, which channel consists of several channel sections arranged one behind the other, which are inclined downwards in the direction of flow, that nozzle arrangements are arranged in the channel over its length and that the last channel section opens into a collecting container adjoining the separation basin.
  • the nozzle arrangement has lower nozzles which are slightly inclined in their direction to the channel floor, while upper nozzles of the nozzle arrangement run essentially horizontally or are inclined slightly upwards.
  • each nozzle arrangement can have nozzles which are arranged in a V-shape in the flow direction. This configuration of the nozzle arrangement ensures that a flow is always maintained over the entire channel cross section, both in the upper and in the lower region
  • several channel sections can be arranged in a meandering manner one behind the other.
  • a swirl chamber is connected upstream of the separation basin.
  • This expediently consists of a column-like container which has a lower inlet for the liquid-plastic mixture and an upper outlet for transfer into the separating basin.
  • a separation of plastic materials can be achieved to a degree which is sufficient in practice to be able to reuse the plastics.
  • An even further fine separation may be desired for some plastics. This can be done by repeating the process by using several devices consisting of separation basin and collecting container,
  • REPLACEMENT LEAF can be switched in sequence.
  • several separating tanks with swirl chambers in front of each other can be arranged parallel to one another.
  • FIG. 1 shows a schematic representation of a top view of a device according to the invention for separating shredded plastics
  • FIG. 2 shows a section along the line II-II in FIG. 1
  • FIG. 3 shows a section along the line III-III in FIG. 1 and
  • the device for separating crushed plastics essentially consists of a separation basin 1, in which a channel 2 or a flow path is arranged.
  • the channel 2 consists of several channel sections 3, 3a, 3b, 3c.
  • the individual channel sections are arranged in a meandering manner one behind the other. This is done in a simple manner by partitions 4, 4a, 4b, 4c.
  • the lower sections 5, 5a, 5b, 5c of the channel sections 3, 3a, 3b, 3c are trough-shaped.
  • the direction of flow of the liquid-plastic mixture is shown in FIG. 1 by arrows 17a.
  • Each channel section 3, 3a, 3b, 3c is inclined downward in the direction of flow, so that the last channel section 3c lies lower than the first channel section 3. This forms a kind of slide for the plastic parts.
  • a collection container 6 is connected to the last channel section 3c.
  • the collecting container is shown in more detail in FIG. 4.
  • the last channel section 3c opens into a pre-collection container 6a formed by an intermediate wall 6d in the collection container 6, which has an inclined bottom surface 6b which opens into a post-collection container 6c which has a lower floor 7.
  • the lighter plastic particles collect in the pre-collection container 6a, while the heavier ones sink to the bottom 7.
  • an opening 1c is made in a container wall 1a of the separating basin 1.
  • an opening 1b is made in the container wall 1 a for the lighter plastic particles.
  • An outlet line 9 is provided in the area of the liquid level 8.
  • a swirling chamber 10a is arranged in front of the separating basin 1 with the channel 2 and consists of a columnar container 10 which has an inlet 11 at the bottom and an outlet 12 at the top.
  • the plastic particles should be free of adhering foreign substances, e.g. Air bubbles to be freed.
  • a feed channel 13 In front of the inlet 11 there is a feed channel 13 which has a transport device 1 which feed the comminuted plastic materials to a liquid channel 15, the liquid being conveyed by means of a pump 16.
  • each channel section 3, 3a, 3b, 3c is assigned nozzle arrangements 17 distributed over its length, the nozzles 18 and 19 of which are arranged vertically one above the other.
  • the nozzles 18 are located near the bottom of the channel 2, while the nozzles 19 are in the region of the water level. Liquid is applied to the nozzle arrangement 17 via the line 20.
  • the direction of the nozzles 18, 19 runs in accordance with the flow to be achieved, which is indicated in FIG. 1 by arrows 17a.
  • the separation device works as follows:
  • a liquid is introduced via the pump 16 into the liquid channel 15, which is connected to the supply channel 13 for the plastic parts.
  • the liquid-plastic mixture enters the inlet channel 11, which transports the mixture further into the swirling chamber 10a, which is designed as a columnar container 10.
  • a swirl is caused by the fact that the columnar container 10 is larger in space than the inlet 11.
  • the turbulence can be increased by the fact that the inlet channel is designed in the manner of a Venturi nozzle.
  • the mixture is supplied in the lower region of the columnar container 10, while this mixture of liquid and comminuted plastic materials is supplied to the channel 2 formed in the separating tank 1 via the outlet 12 arranged at the top in the container 10.
  • the nozzle arrangement 17 in each of the channel sections 3, 3a, 3b, 3c ensures that the mixture of liquid and comminuted plastic particles is kept in motion, so that the lighter plastic parts float upwards, while the heavier plastic parts sink downwards.
  • the plastics floating on top are sprayed with the help of the nozzles 19 in each of the channel
  • REPLACEMENT LEAF sections 3, 3a, 3b, 3c transported further, while the sunken plastics are transported further with the help of the nozzles 18 in each of the channel sections 3, 3a, 3b, 3c.
  • the nozzles 18 are arranged in a V-shape in the flow direction.
  • nozzle arrangements of a similar type and guide devices such as e.g. Baffles may be provided.
  • the plastics have already been largely separated, so that the heavier plastic particles flow at the bottom of the channel section 3c while the lighter ones float above.
  • the lighter plastic particles can be removed in a variety of ways, for example by a conventional conveyor, e.g. a scoop.
  • the heavier plastic particles collecting on the bottom in the last channel section 3c reach the collecting container 6 via the opening 1c and the post-collecting container 6c via the sloping bottom surface 6b, where they can be removed.
  • the process can be repeated using the device consisting essentially of separation basin 1 with channel 2 sloping towards the front and collecting container 6.

Landscapes

  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Description d'un procédé et d'un dispositif pour séparer des matières plastiques de densité variable qui ont été pulvérisées, à l'aide d'un flux. Selon ce procédé, on achemine un mélange de liquide et de matières plastiques de densité variable jusqu'à un bassin de séparation ou analogue. Des flux sont produits dans au moins deux plans verticaux, par l'apport de liquide, dans un canal (2) disposé dans le bassin de séparation (1) et sont répartis sur toute sa longueur. Le mélange liquide-matières plastiques, après avoir traversé le bassin de séparation (1), est introduit dans une cuve collectrice (6) dans laquelle les matières plastiques plus légères qui flottent dans la zone superficielle du liquide, sont évacuées ou bien recueillies dans une section séparée de la cuve, alors que les matières plastiques plus lourdes se déposent sur le fond de la cuve et en sont retirées.
PCT/EP1993/001188 1992-05-12 1993-05-12 Procede et dispositif de separation de matieres plastiques pulverisees de densite variable Ceased WO1993023169A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93909974A EP0593727A1 (fr) 1992-05-12 1993-05-12 Procede et dispositif de separation de matieres plastiques pulverisees de densite variable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924215610 DE4215610C2 (de) 1992-05-12 1992-05-12 Verfahren und Vorrichtung zum Trennen von zerkleinerten Kunststoffmaterialien unterschiedlicher Dichte
DEP4215610.6 1992-05-12

Publications (1)

Publication Number Publication Date
WO1993023169A1 true WO1993023169A1 (fr) 1993-11-25

Family

ID=6458669

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/001188 Ceased WO1993023169A1 (fr) 1992-05-12 1993-05-12 Procede et dispositif de separation de matieres plastiques pulverisees de densite variable

Country Status (3)

Country Link
EP (1) EP0593727A1 (fr)
DE (1) DE4215610C2 (fr)
WO (1) WO1993023169A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512270B (en) * 2013-01-16 2015-07-01 Aquavitrum Ltd Apparatus For Washing Contaminated Material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680796A (en) * 1970-06-02 1972-08-01 Owens Illinois Inc Defiberation apparatus for separating cellulosic fibrous material from refuse
US4483768A (en) * 1979-10-11 1984-11-20 Sorema S.R.L. Apparatus for separating materials of small size
EP0228724A2 (fr) * 1985-12-19 1987-07-15 DANECO DANIELI ECOLOGIA SpA Séparateur pour agrégats
DE3717839A1 (de) * 1986-05-28 1987-12-03 Andritz Ag Maschf Verfahren zum abtrennen von leichtstoffen, insbesondere kunststoffteilen, aus substratmischungen und vorrichtung zur durchfuehrung des verfahrens
GB2191118A (en) * 1986-05-28 1987-12-09 Andritz Ag Maschf A process and a plant for separating low density material from substrate mixtures
DE4023434A1 (de) * 1990-07-20 1992-01-23 Fritz Bufe Verfahren zur separierung von kunststoffmaterialien

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023280A1 (de) * 1980-06-21 1982-01-14 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur gewinnung von speziellen kunststoffen aus dem bei der aufbereitung von altakkumulatoren als produkt anfallenden abfallmaterial
US4728045A (en) * 1987-01-12 1988-03-01 Nelmor Co., Inc. Method for reclaiming bonded, two-resin articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680796A (en) * 1970-06-02 1972-08-01 Owens Illinois Inc Defiberation apparatus for separating cellulosic fibrous material from refuse
US4483768A (en) * 1979-10-11 1984-11-20 Sorema S.R.L. Apparatus for separating materials of small size
EP0228724A2 (fr) * 1985-12-19 1987-07-15 DANECO DANIELI ECOLOGIA SpA Séparateur pour agrégats
DE3717839A1 (de) * 1986-05-28 1987-12-03 Andritz Ag Maschf Verfahren zum abtrennen von leichtstoffen, insbesondere kunststoffteilen, aus substratmischungen und vorrichtung zur durchfuehrung des verfahrens
GB2191118A (en) * 1986-05-28 1987-12-09 Andritz Ag Maschf A process and a plant for separating low density material from substrate mixtures
DE4023434A1 (de) * 1990-07-20 1992-01-23 Fritz Bufe Verfahren zur separierung von kunststoffmaterialien

Also Published As

Publication number Publication date
DE4215610C2 (de) 1994-12-08
DE4215610A1 (de) 1993-11-25
EP0593727A1 (fr) 1994-04-27

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