DE2328448A1 - Solvent removal of PVC from coated metals - using methylene chloride in a pollution-free process - Google Patents

Solvent removal of PVC from coated metals - using methylene chloride in a pollution-free process

Info

Publication number
DE2328448A1
DE2328448A1 DE2328448A DE2328448A DE2328448A1 DE 2328448 A1 DE2328448 A1 DE 2328448A1 DE 2328448 A DE2328448 A DE 2328448A DE 2328448 A DE2328448 A DE 2328448A DE 2328448 A1 DE2328448 A1 DE 2328448A1
Authority
DE
Germany
Prior art keywords
methylene chloride
pvc
use according
pollution
solvent removal
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.)
Pending
Application number
DE2328448A
Other languages
German (de)
Inventor
Wolf-Dieter Jentzsch
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.)
JENTZSCH WOLF DIETER
Original Assignee
JENTZSCH WOLF DIETER
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 JENTZSCH WOLF DIETER filed Critical JENTZSCH WOLF DIETER
Priority to DE2328448A priority Critical patent/DE2328448A1/en
Publication of DE2328448A1 publication Critical patent/DE2328448A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Methylene chloride is used to strip old PVC-coated metal wires etc., e.g. Cy electrical conductors. The mixture of CH2Cl2, plastics separated and metal is specif. made into a soln. having a density of not 1.337 at 20 degrees C and he process carried out (dis) continuously with opt. mechanical aids to dissoln. After dissoln., the CH2Cl2 may be distilled off and re-used.

Description

Wolf-Dieter JentzschWolf-Dieter Jentzsch

7731 Marbach7731 Marbach

Mühlenweg 2 2328448Mühlenweg 2 2328448

Verwendung von Methylenchlorid bei der Altmaterialaurbereitung· Use of methylene chloride in the recycling of waste materials

Die Erfindung betrifft die Verwendung von Methylenchlorid zum Zwecke der Zerlegung von PVC-umhülltem bzw· PVC-beschichtetem Metall in seine Bestandteile·The invention relates to the use of methylene chloride for the purpose of dismantling PVC-encased or PVC-coated Metal in its constituent parts

PVC findet zunehmend Verwendung bei der Umhüllung oder Beschichtung von Metalldrähten, -stäben, -blechen Uoä, als Isolations-, Schutz- oder Dekorationsschicht· Die zunehmenden Mengen an Produktionsanfall und Schrotten der beschriebenen Art stellen die verarbeitenden Betrübe vor beträchtliche Umweltschutzprobleme· Bekanntlich entstehen bei der Verbrennung von PVC erhebliche Mengen Chlor und Salzsäure· Neben der verbreitet Anwendung findenden Abbrennmethode wird an mechanischen und kombiniert Tiefkühl-median. Trennverfahren gearbeitet.PVC is increasingly used in the sheathing or coating of metal wires, rods and sheets, as Insulation, protective or decorative layer · The increasing amounts of production and scrap of the described Art present considerable troubles for processing Environmental protection problems It is well known that the incineration of PVC produces considerable amounts of chlorine and hydrochloric acid. In addition to the widely used burning method, mechanical and combined deep-freezing median. Separation process worked.

Das Verfahren gemäß Erfindung stellt eine wirtschaftliche, leistungsfähige, die Umwelt in keiner ¥eise beeinträchtigende Methodezur Zerlegung in PVC und Metall dar. Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß das zu zerlegende Gut, in ganzen Stücken oder zerteilt, einige Zeit in Msfchylenchlorid ( CH Cl. ) getaucht oder mit diesem benetzt wird« Diese Behandlung kann in stationären oder bewegten Gefäßen erfolgen· Unter Aufnahme von Methylenehlorid quillt das PVC auf und erweicht· Mit Hilfe von Bewegung durch Vibration, Rühr-, Schlag- oder MXXHÖÜCXX Mahleffekten erfolgt die Zerlegung in Metall und Kunststoff· Die Trennung der beiden Phasen wird in dem Verfahren gemäß Erfindung dadurch erreicht» daß das Msthylenchlorid auf einer spezifisch schwereren Lösung schwimmt oder zum schwimmen gebracht wird, deren Dichte so eingestellt wird, daß die Kunststoffteile aufsteigen, während sich die Metallteile in ihr sammeln· Je nach Behältertyp können die so getrennten Bestandteile kontinuierlich oder diskontinuierlich abgezogen, in einem abgekapselten System getrocknet und «Lterbehandelt werden, während der Methylenchloriddampf kondensiert und de« Prozeß gemäß Erfindung, unverändert und praktisch verlustlos, wieder zugeführt wird·The process according to the invention is economical, efficient and in no way harmful to the environment Method for breaking it down into PVC and metal. The task is achieved according to the invention in that the to be disassembled Good, whole or in pieces, in methylene chloride for some time (CH Cl.) Is immersed or wetted with this «This treatment can be carried out in stationary or moving vessels · The PVC swells with the absorption of methylene chloride up and softens with the help of movement through vibration, Mixing, beating or MXXHÖÜCXX grinding effects, the separation into metal and plastic takes place · The separation of the two Phases is achieved in the method according to the invention » that the methylene chloride on a specific heavier solution floats or is made to swim, the density of which is adjusted so that the plastic parts rise while the metal parts collect in it · Depending on the type of container The constituents separated in this way can be drawn off continuously or discontinuously, in an encapsulated system dried and aged while the methylene chloride vapor condenses and the process according to the invention, unchanged and practically lossless, is supplied again

Patentansprüche:Patent claims:

Verwendung von Methylenchlorid bei der Altnaterialaufbereitung, insbesondere für die Zerlegung von PVC-ummantelten Metalldrähten, wie Kupferleitungen und -kabeln u.ä·, dadurch gekennzeichnet,Use of methylene chloride in the processing of old material, especially for the dismantling of PVC-coated Metal wires such as copper wires and cables, etc., thereby marked,

daß das Altmaterial mittels Methylenehlorid zerlegt wird·that the old material is broken down by means of methylene chloride

409886/1119409886/1119

Claims (1)

Wolf-Dieter Jentzsch Blatt - 2 -Wolf-Dieter Jentzsch sheet - 2 - Marbach
Mühlenweg 2Marbach
Mühlenweg 2 Verwendung von Methylenchlorid bei der Altmaterialaufbereitung, Use of methylene chloride in the processing of old materials, β Verwendung nach Anspruch 1.β Use according to claim 1. dadurch gekennzeichnet, daß das Gemisch aus Methylenchlorid, abgetrenntem Kunststoff und Metall auf einer Lösung mit der Mindestdichte D„ „ = 1.337 zum schwimmen gpadMMwfet gebracht wird.characterized in that the mixture of methylene chloride, separated plastic and metal in a solution with the minimum density D "" = 1,337 brought to swim gpadMMwfet will. 3» Verwendung nach Anspruch 1.3 »Use according to claim 1. dadurch gekennzeichnet, daß die Trennung des Kunststoffes durch Vibrations-, Rühr-, Reib-,Schlag- und Mahleffekte unterstützt wird,characterized in that the separation of the plastic by vibration, stirring, friction, impact and grinding effects is supported, k. Verwendung nach Anspruch1. k. Use according to claim 1. dadurch gekennzeichnet, daß das Verfahren sowohl kontinuierlich als auch diskontinuierlich betrieben werden kann»characterized in that the process can be operated both continuously and discontinuously » 5· Verwendung nach Anspruch 1.5. Use according to claim 1. dadurch gekennzeichnet, daß das Zerlegungsgut zerkleinert und/oder unzerkleinert zerlegt werden kann.characterized in that the debris can be shredded and / or broken up without being shredded. 6. Verwendung nach Anspruch 1.6. Use according to claim 1. dadurch gekennzeichnet, daß das Methylenchlorid beim trocknen des Kunststoffes verdampft, kondensiert und im Kreisprozeß zurückgeführt werden kann.characterized in that the methylene chloride evaporates when the plastic dries, condenses and im Circular process can be traced back. gez.: Wolf-Dieter Jentzschsigned: Wolf-Dieter Jentzsch .'. ' Marbach, den 2· Juni 1973Marbach, June 2, 1973 409886/1119409886/1119
DE2328448A 1973-06-05 1973-06-05 Solvent removal of PVC from coated metals - using methylene chloride in a pollution-free process Pending DE2328448A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2328448A DE2328448A1 (en) 1973-06-05 1973-06-05 Solvent removal of PVC from coated metals - using methylene chloride in a pollution-free process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2328448A DE2328448A1 (en) 1973-06-05 1973-06-05 Solvent removal of PVC from coated metals - using methylene chloride in a pollution-free process

Publications (1)

Publication Number Publication Date
DE2328448A1 true DE2328448A1 (en) 1975-02-06

Family

ID=5883024

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2328448A Pending DE2328448A1 (en) 1973-06-05 1973-06-05 Solvent removal of PVC from coated metals - using methylene chloride in a pollution-free process

Country Status (1)

Country Link
DE (1) DE2328448A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51100176A (en) * 1975-01-23 1976-09-03 Southwire Co
WO1983002281A1 (en) * 1981-12-23 1983-07-07 Rasmussen, Erik A process for non-destructive separation of mixtures containing plastics and non-plastics scrap
DE4441229A1 (en) * 1994-02-08 1995-08-31 Drzevitzky Bernd Dipl Ing Method and device for recycling plastic-coated or -wrapped cable residues and cable scrap for the separate recovery of metal and single-grade, recyclable plastic
WO2000010787A1 (en) * 1998-08-21 2000-03-02 P-Tec Gmbh Polymertechnologie Method and device for recovering pure pvc from plastic waste containing pvc
US6123277A (en) * 1994-02-08 2000-09-26 Drzevitzky; Bernd Process and device for making use of plastic-coated or sheathed wiring and waste wire for the separate recovery of metal and pure recyclable plastic
US20220169822A1 (en) * 2020-12-02 2022-06-02 International Business Machines Corporation Feedstock purification of polyester waste for recycling processes

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51100176A (en) * 1975-01-23 1976-09-03 Southwire Co
JPS5829206B2 (en) * 1975-01-23 1983-06-21 サウスワイヤ− カンパニ− Method for selecting and recovering halogenated vinyl insulation from mixed insulated wire scrap
WO1983002281A1 (en) * 1981-12-23 1983-07-07 Rasmussen, Erik A process for non-destructive separation of mixtures containing plastics and non-plastics scrap
US4578184A (en) * 1981-12-23 1986-03-25 Aktieselskabet Nordiske Kabel-Og Traadfabriker Process for non-destructive separation of mixtures containing plastics scrap
DE4441229A1 (en) * 1994-02-08 1995-08-31 Drzevitzky Bernd Dipl Ing Method and device for recycling plastic-coated or -wrapped cable residues and cable scrap for the separate recovery of metal and single-grade, recyclable plastic
US6123277A (en) * 1994-02-08 2000-09-26 Drzevitzky; Bernd Process and device for making use of plastic-coated or sheathed wiring and waste wire for the separate recovery of metal and pure recyclable plastic
WO2000010787A1 (en) * 1998-08-21 2000-03-02 P-Tec Gmbh Polymertechnologie Method and device for recovering pure pvc from plastic waste containing pvc
US6548561B1 (en) 1998-08-21 2003-04-15 P-Tec Gmbh Polymertechnologie Method and device for recovering pure PVC from plastic waste containing PVC
US20220169822A1 (en) * 2020-12-02 2022-06-02 International Business Machines Corporation Feedstock purification of polyester waste for recycling processes
US11814487B2 (en) * 2020-12-02 2023-11-14 International Business Machines Corporation Feedstock purification of polyester waste for recycling processes

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