WO2015040562A1 - Procédé de traitement et appareil de traitement pour substance liquide - Google Patents

Procédé de traitement et appareil de traitement pour substance liquide Download PDF

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Publication number
WO2015040562A1
WO2015040562A1 PCT/IB2014/064619 IB2014064619W WO2015040562A1 WO 2015040562 A1 WO2015040562 A1 WO 2015040562A1 IB 2014064619 W IB2014064619 W IB 2014064619W WO 2015040562 A1 WO2015040562 A1 WO 2015040562A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
treatment
container body
pet
temperature
Prior art date
Application number
PCT/IB2014/064619
Other languages
English (en)
Inventor
Christian Schiavolin
Original Assignee
Christian Schiavolin
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
Priority claimed from IT000255A external-priority patent/ITPD20130255A1/it
Priority claimed from IT000256A external-priority patent/ITPD20130256A1/it
Application filed by Christian Schiavolin filed Critical Christian Schiavolin
Publication of WO2015040562A1 publication Critical patent/WO2015040562A1/fr

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
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/021—Heat treatment of powders
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate

Definitions

  • the method and apparatus of the invention are particularly suitable for use in the processing method for plastics material, in particular for polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • Crystalline PET may be used for trays and containers capable of withstanding temperatures of as high as 150°C.
  • the object of the present invention is to provide methods for heat treating flowable material which make it possible to increase the efficiency of the treatment itself and to improve removal of any secondary products generated during the heat treatment. Another object is to provide a method which makes it possible to increase the efficiency of crystallisation and/or SSP of PET, while at the same time reducing energy consumption and improving the quality of the output material .
  • the treatment is SSP of PET and the treatment fluid is water.
  • the invention may be applied to heat treatments, in particular dehumidification, for plastics materials other than PET, for example PA (nylon), PC (polycarbonate) or biopolymers such as PLA (polylactic acid).
  • PA polyacrylate
  • PLA polylactic acid
  • a version which is not shown may be provided with a plurality of inlet and/or outlet valves, the interspace 13 being subdivided into two or more mutually independent portions, in such a manner as to define multiple independent temperature regulation circuits.
  • the feed device 11 is furthermore provided with a control device capable of controlling the flow rate and/or temperature of the temperature regulation fluid in the interspace 13.
  • the feed device 11 is furthermore provided with temperature probe 9 for measuring the temperature of the treatment fluid G within the body 11a.
  • the temperature probe 9 sends a signal relating to the measurement made to the control device of the temperature regulation circuit in order, if necessary, to vary the flow rate and/or temperature of the temperature regulation fluid.
  • the connecting line 52 is provided with a regulating valve 51 for opening/closing the link between the fluid source 2 and the treatment device 100 : when the regulating valve 51 is open, the fluid G flows from the fluid source 2 to the treatment device 100 by way of the connecting line 52, whereas when the regulating valve 51 is closed passage of fluid G from the fluid source 2 to the treatment device 100 is interrupted.
  • the waste fluid G' is water vapour with ethylene glycol and acetaldehyde.
  • Removing the acetaldehyde by way of the water is also important because this improves the compatibility of the PET with foodstuffs.
  • the vacuum generation device is actuated in such a manner as to maintain a negative pressure capable of extracting the treatment fluid G in a few seconds.
  • the temperature regulation device is actuated to maintain or readjust the PET at/to a temperature suitable for carrying out crystallisation and the fluid G and secondary products are usually extracted for a period of time of approximately 10-15 minutes, after which the crystallised PET is discharged from the container body 101.
  • Flow rate of the treatment fluid G from the fluid source 2 to the feed device 11 may proceed by pressure difference, or simply by gravity or also, in a version which is not shown, by way of a pump.
  • the quantity of fluid G fed into the body 11a is controlled by way of the minimum and maximum level sensors 7, 8 or load cells, laser sensors or timers.
  • the second regulating valve 41 is closed.
  • the operation of feeding treatment fluid G to the container body may, if necessary, be repeated, as explained above.
  • water as treatment fluid makes it possible to reduce PET crystallisation costs, not only because crystallisation times are shorter and crystallisation efficiency is high but also because water is an inexpensive fluid which is readily obtainable.
  • the PET for packaging is usually adjusted at least to a temperature of below 80°C. Furthermore, if the fluid G is water, the material may be moisture- conditioned, so as to adjust it to a stable initial moisture condition.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

La présente invention concerne un procédé de traitement (1) pour substance liquide (W) consistant à : introduire une certaine quantité de ladite substance (W) à soumettre au dit traitement dans un corps de récipient (101) ; produire un degré souhaité de vide dans ledit corps de récipient (101) au moyen d'un dispositif de production de vide connecté fonctionnellement au dit corps de récipient (101); réguler la température de ladite substance (W) au moyen d'un dispositif de régulation de la température de manière à réguler la température de ladite substance (W) à une température de traitement souhaitée de façon à ce que ladite substance soit soumise à un traitement produisant des produits secondaires à partir de ladite substance (W) ; introduire un fluide (G) pouvant se lier aux dits produits secondaires dans ledit corps de récipient (101) et extraire dudit corps de récipient (101) un déchet de fluide (G') contenant ledit fluide (G) et lesdits produits secondaires au moyen dudit dispositif de production de vide.
PCT/IB2014/064619 2013-09-19 2014-09-18 Procédé de traitement et appareil de traitement pour substance liquide WO2015040562A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITPD2013A000256 2013-09-19
IT000255A ITPD20130255A1 (it) 2013-09-19 2013-09-19 Metodo e apparato di trattamento per materiale scorrevole
IT000256A ITPD20130256A1 (it) 2013-09-19 2013-09-19 Metodo e apparato di trattamento per materiale scorrevole
ITPD2013A000255 2013-09-19

Publications (1)

Publication Number Publication Date
WO2015040562A1 true WO2015040562A1 (fr) 2015-03-26

Family

ID=51743512

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/064619 WO2015040562A1 (fr) 2013-09-19 2014-09-18 Procédé de traitement et appareil de traitement pour substance liquide

Country Status (1)

Country Link
WO (1) WO2015040562A1 (fr)

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064112A (en) 1975-12-31 1977-12-20 Zimmer Aktiengesellschaft Process for the continuous production of high molecular weight polyethylene terephthalate
US4161578A (en) 1978-05-12 1979-07-17 Bepex Corporation Process for solid phase polymerization of polyester
US4532319A (en) * 1984-09-13 1985-07-30 The Goodyear Tire & Rubber Company Solid state polymerization of polyester
US4698917A (en) 1986-05-02 1987-10-13 Italvacuum Di Ing. P. Debolini & C. S.A.S. Rotary drier for drying heat-sensitive products and pharmaceuticals
US4792573A (en) * 1988-04-01 1988-12-20 The Goodyear Tire & Rubber Company Preparation of ultra-high molecular weight polyester
EP0312741A2 (fr) 1987-08-29 1989-04-26 Nissui Kako Co., Ltd. Procédé et dispositif pour le séchage de matériau synthétique au moyen de micro-ondes
US5714571A (en) 1994-11-21 1998-02-03 Sinco Engineering S.P.A. Process for the crystallization of polyester resins
US6288131B1 (en) * 1997-02-03 2001-09-11 Illinois Tool Works Inc. Inline solid state polymerization of pet flakes for manufacturing plastic strap
US6449875B1 (en) 1999-01-21 2002-09-17 Mann & Hummel Protec Gmbh Method of heating bulk material, especially granular plastic material
US7137802B2 (en) 2002-06-05 2006-11-21 Erema Engineering Recycling Und Anlagen Gesellschaft M.B.H. Apparatus for processing thermoplastic synthetic plastic material
US20090249955A1 (en) 2006-08-01 2009-10-08 Alan Izhar Bodner Method and system for separation of gas from liquid
WO2010057695A2 (fr) 2008-11-21 2010-05-27 Astegger, Johann, Josef Postcondensation de granulé de plastique
WO2010089721A1 (fr) 2009-02-09 2010-08-12 Christian Schiavolin Déshumidificateur pour matières plastiques
WO2010109403A1 (fr) 2009-03-23 2010-09-30 Christian Schiavolin Dispositif de déshumidification pour matériaux en plastique
EP2511635A1 (fr) 2011-04-13 2012-10-17 Smc Technology S.R.L. Appareil de séchage et déshumidification de type à micro-ondes pour le séchage rapide et continu d'un matériau plastique en granulés, pastilles ou flocons permettant d'alimenter un système de moulage par injection ou par extrusion
WO2013092554A1 (fr) * 2011-12-22 2013-06-27 Bühler AG Procédé de polycondensation en phase solide

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064112A (en) 1975-12-31 1977-12-20 Zimmer Aktiengesellschaft Process for the continuous production of high molecular weight polyethylene terephthalate
US4064112B1 (en) 1975-12-31 1994-09-13 Davy Mckee Aktiengesellschaft Process for the continuous production of high molecular weight polyethylene terephalate
US4161578A (en) 1978-05-12 1979-07-17 Bepex Corporation Process for solid phase polymerization of polyester
US4532319A (en) * 1984-09-13 1985-07-30 The Goodyear Tire & Rubber Company Solid state polymerization of polyester
US4698917A (en) 1986-05-02 1987-10-13 Italvacuum Di Ing. P. Debolini & C. S.A.S. Rotary drier for drying heat-sensitive products and pharmaceuticals
EP0312741A2 (fr) 1987-08-29 1989-04-26 Nissui Kako Co., Ltd. Procédé et dispositif pour le séchage de matériau synthétique au moyen de micro-ondes
US4792573A (en) * 1988-04-01 1988-12-20 The Goodyear Tire & Rubber Company Preparation of ultra-high molecular weight polyester
US5714571A (en) 1994-11-21 1998-02-03 Sinco Engineering S.P.A. Process for the crystallization of polyester resins
US6288131B1 (en) * 1997-02-03 2001-09-11 Illinois Tool Works Inc. Inline solid state polymerization of pet flakes for manufacturing plastic strap
US6449875B1 (en) 1999-01-21 2002-09-17 Mann & Hummel Protec Gmbh Method of heating bulk material, especially granular plastic material
US7137802B2 (en) 2002-06-05 2006-11-21 Erema Engineering Recycling Und Anlagen Gesellschaft M.B.H. Apparatus for processing thermoplastic synthetic plastic material
US20090249955A1 (en) 2006-08-01 2009-10-08 Alan Izhar Bodner Method and system for separation of gas from liquid
WO2010057695A2 (fr) 2008-11-21 2010-05-27 Astegger, Johann, Josef Postcondensation de granulé de plastique
WO2010089721A1 (fr) 2009-02-09 2010-08-12 Christian Schiavolin Déshumidificateur pour matières plastiques
WO2010109403A1 (fr) 2009-03-23 2010-09-30 Christian Schiavolin Dispositif de déshumidification pour matériaux en plastique
EP2511635A1 (fr) 2011-04-13 2012-10-17 Smc Technology S.R.L. Appareil de séchage et déshumidification de type à micro-ondes pour le séchage rapide et continu d'un matériau plastique en granulés, pastilles ou flocons permettant d'alimenter un système de moulage par injection ou par extrusion
WO2013092554A1 (fr) * 2011-12-22 2013-06-27 Bühler AG Procédé de polycondensation en phase solide

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