EP1045748A2 - Procede et dispositif pour la production de granulats en materiaux polymeres - Google Patents

Procede et dispositif pour la production de granulats en materiaux polymeres

Info

Publication number
EP1045748A2
EP1045748A2 EP99957986A EP99957986A EP1045748A2 EP 1045748 A2 EP1045748 A2 EP 1045748A2 EP 99957986 A EP99957986 A EP 99957986A EP 99957986 A EP99957986 A EP 99957986A EP 1045748 A2 EP1045748 A2 EP 1045748A2
Authority
EP
European Patent Office
Prior art keywords
granules
drying
drying process
liquid
cleaning liquid
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.)
Withdrawn
Application number
EP99957986A
Other languages
German (de)
English (en)
Inventor
Bernhard Stark
Olaf Hustert
Udo Huber
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.)
Coperion Waeschle GmbH and Co KG
Original Assignee
Waeschle GmbH
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 Waeschle GmbH filed Critical Waeschle GmbH
Publication of EP1045748A2 publication Critical patent/EP1045748A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • 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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • 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
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment

Definitions

  • the invention relates to a method for producing granules from polymeric materials according to the preamble of claim 1 and a device suitable for carrying them out.
  • the plastic granules produced by the known method meet the usual requirements. In certain applications, for example in the extrusion of breakdown-resistant cable insulation, the purity of the product may no longer be sufficient. Any contamination of the granules increases the reject rate in these applications.
  • the present invention has for its object to increase the purity of granules made of polymeric materials.
  • Washing the granules does not preclude the product from being subjected to additional cleaning processes following the first drying process, in particular the air separation which is known per se.
  • the first drying process is preferably designed such that the projections on the granules are reliably knocked off due to high mechanical loads.
  • the associated formation of metallic or polymeric abrasion is of no importance for the quality of the granules due to the subsequent washing process.
  • a curved screen with a subsequent centrifugal dryer can be used.
  • the dust-like abrasion is separated off via the cleaning liquid, it is preferable to subject it to careful filtering before it is fed back into the washing process. In certain applications, it is also advantageous to continuously remove part of the cleaning liquid during the washing process and, after filtering, to return it to the washing process via a separate circuit.
  • Fig. 1 shows an arrangement for washing the granules once
  • Fig. 2 shows an arrangement for multiple washing of the granules with previous wind classification
  • the arrangement shown in Figure 1 comprises an extruder 1, in which the polymer material to be granulated is heated and plasticized by means of external heat and friction.
  • a granulating tool 2 Provided in a granulating tool 2 is a nozzle plate 3 provided with a plurality of openings, in which the stream of plasticized polymer provided by the extruder at high pressure is divided into individual strands which are cut into granules by a rotating knife 4.
  • the cutting takes place in the exemplary embodiment in a coolant flow, which is provided by a pump 5 and conveys the granulate to a first drying device 6, in which the coolant is separated from the granulate.
  • the first drying device 6 comprises a separator 7 and a centrifugal dryer 8, in which the granulate is exposed to a rotating air stream. Due to the high mechanical loads, undesired projections on the granules are knocked off, which can result in a not inconsiderable amount of polymeric or metallic abrasion.
  • the stream of granules, dust and cleaning liquid enters a further drying device 12, which comprises a separator 13 and a fluid bed dryer 14.
  • a separator 13 the cleaning liquid with the dust floating in it is separated from the granulate, which is subsequently gently handled in a continuously operating fluid bed dryer 14, that is to say largely avoiding mechanical loads to the permissible residual moisture is dried.
  • the granules are then packed in bags in a device (not shown) or filled into transport or storage containers.
  • a filter 15 is used to separate the dust-like constituents from the cleaning liquid, through which the cleaning liquid is pressed through the pipeline 16 by means of a pump 17 during the return to the washing process. Another part of the washed-out abrasion is separated off by a filter 18 which is arranged in a ring line 19. In this ring line 19, part of the cleaning liquid is continuously withdrawn from the container 11 by means of a pump 20 and is fed back into the container after the filtration.
  • the method for producing the granules according to FIG. 2 differs from the method explained in FIG. 1 in particular in that the granules are subjected to an additional screening in an air classifier 21 after being separated from the cooling liquid. Furthermore, a two-stage washing process is subsequently provided, in which the granules are subjected to cleaning one after the other in the containers 11, 11 ' . After each washing process, the suspension of granules, dust and cleaning liquid is supplied by means of a pump 22, 22 ' drying devices 12, 12 ' , in which the cleaning liquid used in each case is separated off.
  • the drying apparatus 12 used in the first washing process consists of a separator 13, while the last drying apparatus 12 'to a separator 13' and a plurality comprises discontinuously to be operated vacuum dryer 14 ', are fed via a branched pipe 23 in succession.
  • a pipeline 24 feeds the granules removed from the vacuum dryers 13 "to a packaging station, not shown.
  • the system components listed in the description do not include all devices suitable for carrying out the method according to the invention. In particular, the list of useful separators, dryers and devices for washing the granules is not exhaustive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un procédé de production de granulats en matériaux polymères, qui comprend les étapes consistant à: plastifier le polymère, diviser les masses plastifiées en cordons individuels, découper les cordons individuels pour former un granulat, refroidir le granulat dans un liquide de refroidissement et séparer le liquide de refroidissement du granulat selon un premier processus de séchage. Le granulat est ensuite soumis au moins à un procédé de lavage dans un liquide de nettoyage qui est à son tour séparé du granulat selon au moins un autre processus de séchage. Au cours du premier processus de séchage, le granulat est, de préférence, exposé à une sollicitation mécanique élevée dans un tamis courbe derrière lequel est placé un sécheur centrifuge, grâce à laquelle les queues sont séparées des grains de granulat. L'autre processus de séchage, réalisé en particulier au moyen d'un tamis courbe derrière lequel est monté un sécheur à lit tourbillonnaire, à lit fluidisé, à couloir ou à vide, se fait de façon douce, dans une large mesure sans érosion.
EP99957986A 1998-11-05 1999-11-03 Procede et dispositif pour la production de granulats en materiaux polymeres Withdrawn EP1045748A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19850885A DE19850885C1 (de) 1998-11-05 1998-11-05 Verfahren zum Herstellen von Granulaten aus polymeren Werkstoffen
DE19850885 1998-11-05
PCT/EP1999/008403 WO2000027603A1 (fr) 1998-11-05 1999-11-03 Procede et dispositif pour la production de granulats en materiaux polymeres

Publications (1)

Publication Number Publication Date
EP1045748A2 true EP1045748A2 (fr) 2000-10-25

Family

ID=7886704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957986A Withdrawn EP1045748A2 (fr) 1998-11-05 1999-11-03 Procede et dispositif pour la production de granulats en materiaux polymeres

Country Status (4)

Country Link
EP (1) EP1045748A2 (fr)
JP (1) JP2002529271A (fr)
DE (1) DE19850885C1 (fr)
WO (1) WO2000027603A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113458067A (zh) * 2021-07-12 2021-10-01 浙江摩天新材料有限公司 一种环保型mq硅树脂的制备装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116910C1 (de) * 2001-04-05 2002-11-21 Coperion Waeschle Gmbh & Co Kg Verfahren und Vorrichtung zur Förderung von Kunststoff-Granulat
DE102004011325A1 (de) * 2004-03-09 2005-09-29 Coperion Waeschle Gmbh & Co. Kg Verfahren und Anlage zum Trocknen von Kunststoff-Granulat
EP1778454A4 (fr) * 2004-08-20 2009-11-18 Fonterra Ip Ltd Appareil d"extrusion et procede d"extrusion d"aliments a forte teneur en proteines
DE102008023046A1 (de) 2008-05-09 2009-11-12 Coperion Gmbh Kunststoffgranulieranlage sowie Kunststoffgranulierverfahren
CN104132518A (zh) * 2013-05-01 2014-11-05 因温斯特技术公司 湿切割和干燥聚酰胺粒料
CN103552169B (zh) * 2013-11-25 2016-06-29 广东欣涛新材料科技股份有限公司 一种热熔胶粒的流水线生产***
CN105109776B (zh) * 2015-09-06 2018-03-30 河北尚华塑料科技有限公司 高分子粒料筛选包装设备
CN112277186A (zh) * 2020-10-09 2021-01-29 长兴材料工业（广东）有限公司 一种低tg结晶共聚酯高效造粒***
CN112793037A (zh) * 2020-12-21 2021-05-14 雷丽 一种用于生产改性塑料的混合设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578740A (en) * 1968-10-08 1971-05-18 Goodrich Gulf Chemical Inc Dewatering pelletizer apparatus
DE2948492A1 (de) * 1979-12-01 1981-06-04 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur herstellung einer von wasserloeslichen und/oder hygroskopischen salzen weitgehend freien isolierung fuer elektrische kabel
US4280303A (en) * 1980-05-01 1981-07-28 Hermann Weber Plastic pellet cleaning apparatus and method for optical lense molding
DE3631376C1 (de) * 1986-09-15 1988-05-11 Werner & Pfleiderer Kuehlvorrichtung fuer Kunststoffgranulat
DE3722684C1 (en) * 1987-07-09 1988-10-27 Werner & Pfleiderer Pelletising water tank
US5041251A (en) * 1989-07-27 1991-08-20 Eastman Kodak Company Pourable particles of normally tacky plastic materials and process for their preparation
DE3927769C1 (fr) * 1989-08-23 1990-11-22 Werner & Pfleiderer Gmbh, 7000 Stuttgart, De
JP2889075B2 (ja) * 1993-03-23 1999-05-10 帝人化成株式会社 合成樹脂粒体に同伴する微粉体の除去装置及び貯留基地
US5895617A (en) * 1996-07-31 1999-04-20 The Japan Steel Works, Ltd. Method and apparatus for transporting underwater cut pellets
DE19709553A1 (de) * 1997-03-07 1998-09-10 Targor Gmbh Verfahren zur Desodorierung von Polyolefingranulaten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0027603A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113458067A (zh) * 2021-07-12 2021-10-01 浙江摩天新材料有限公司 一种环保型mq硅树脂的制备装置

Also Published As

Publication number Publication date
DE19850885C1 (de) 2000-07-20
JP2002529271A (ja) 2002-09-10
WO2000027603B1 (fr) 2000-07-06
WO2000027603A1 (fr) 2000-05-18

Similar Documents

Publication Publication Date Title
DE69231183T2 (de) Vorrichtung zum Polieren und zur Regelung der Grösse des Teilchens in einem Verfahren zum Pulverisieren und zur Trennung
DE102006054770B4 (de) Verfahren für das Recycling von Abfallkunststoff, insbesondere Mischkunststoff
DE69212707T2 (de) Einrichtung zum Zerkleinern von gebrauchten Fahrzeugreifen und dergleichen sowie Trennen von Metallteilen von Nichtmetallteilen von diesem zerkleinerten Material
DE4217005A1 (de) Verfahren zur Herstellung eines aufbereiteten Kunststoffprodukts aus lackierten Kunststoffteilen und thermoplastisches Kunststoffrecyclat aus lackierten, insbesondere polypropylenhaltigen Kunststoffteilen
DE19850885C1 (de) Verfahren zum Herstellen von Granulaten aus polymeren Werkstoffen
DE2918345A1 (de) Verfahren zum kontinuierlichen auftrennen von ausschuss von wegwerf-hygieneartikeln in flockigen und/oder geschnitzelten saugwerkstoff einerseits und dessen flaechige umhuellungen andererseits
EP3310499B1 (fr) Procédé pour le calibrage mécanique du polysilicium
EP0304667B1 (fr) Procédé de récupération des composants PET de produits usés contenant du PET, ainsi que dispositif pour la mise en oeuvre du procédé
DE69111442T2 (de) Zweiphasiges pneumatisches transportverfahren zur kühlung von gummi.
DE3020211A1 (de) Verfahren zum entwaessern von in suspensionen enthaltenen farbstoffen
DE69705034T2 (de) Verfahren und anlage für die gleichzeitige und kontinuierliche herstellung mehrerer granulatfraktionen eines mineralischen materials
AT517410B1 (de) Rückgewinnung von Schleifmittel von Abrasiv-Wasserstrahl-Schneidanlagen
EP0330046B1 (fr) Procédé de récupération de matières plastiques à partir de déchets métaux/plastiques
DE3313872C1 (de) Verfahren und Anlage zur Aufbereitung von mit einer Oberflaechenbeschichtung versehenen Metallteilen
DE60133235T2 (de) Verfahren und Vorrichtung zum Abtragen einer Beschichtung eines Kunststoffprodukts
DE102020108204B4 (de) Verfahren und System zur Separation von staubhaltigen Materialgemischen aus der Verwertung von Elektro- oder Elektronikgeräten
CH672441A5 (fr)
CH644029A5 (de) Verfahren und vorrichtung zum sammeln und entfernen von schwebstoffen und kompakten verunreinigungen aus einer suspension.
DE102016225248A1 (de) Abscheidevorrichtung für Polysilicium
DE202006019353U1 (de) Recycling von CDs, DVDs u.dgl.
DE2441811A1 (de) Verfahren zum trennen von kunststoffabfaellen, insbesondere folienabfaellen, von fremdstoffen wie papier-, textil-, holzschnitzel und fasern zum zwecke der regeneration von kunststoffen
DE19832769C2 (de) Verfahren zum Betreiben einer Rührwerksmühle
DE102010003196A1 (de) Verfahren zum Reinigen von wiederaufzubereitenden Papiermaschinenbespannungen
DE2820206A1 (de) Verfahren und vorrichtung zum sortieren von abfall
DE3006305C2 (de) Siebvorrichtung zum Sortieren von Papierstoffsuspensionen

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

AK Designated contracting states

Kind code of ref document: A2

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

17P Request for examination filed

Effective date: 20010108

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COPERION WAESCHLE GMBH & CO. KG

17Q First examination report despatched

Effective date: 20021018

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030301