EP1342832A2 - Procédé pour trier des vieux papiers pour recupérer du papier à désencré - Google Patents

Procédé pour trier des vieux papiers pour recupérer du papier à désencré Download PDF

Info

Publication number
EP1342832A2
EP1342832A2 EP03004352A EP03004352A EP1342832A2 EP 1342832 A2 EP1342832 A2 EP 1342832A2 EP 03004352 A EP03004352 A EP 03004352A EP 03004352 A EP03004352 A EP 03004352A EP 1342832 A2 EP1342832 A2 EP 1342832A2
Authority
EP
European Patent Office
Prior art keywords
paper
goods
zigzag sifter
zigzag
sifter
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.)
Granted
Application number
EP03004352A
Other languages
German (de)
English (en)
Other versions
EP1342832B1 (fr
EP1342832A3 (fr
Inventor
Frank Rosenboom
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.)
Veolia Umweltservice Beteiligungsverwaltungs GmbH
Original Assignee
Sanne Kruse & Pape & Co GmbH
Cleanaway Hamburg AG and Co KG
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 Sanne Kruse & Pape & Co GmbH, Cleanaway Hamburg AG and Co KG filed Critical Sanne Kruse & Pape & Co GmbH
Publication of EP1342832A2 publication Critical patent/EP1342832A2/fr
Publication of EP1342832A3 publication Critical patent/EP1342832A3/fr
Application granted granted Critical
Publication of EP1342832B1 publication Critical patent/EP1342832B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/026—Separating fibrous materials from waste
    • D21B1/028—Separating fibrous materials from waste by dry methods

Definitions

  • the present invention relates to a method for sorting waste paper bulk goods to obtain deinking paper.
  • waste paper is collected on a large scale in various ways in order to obtain raw materials for recycling.
  • the waste paper collectible comprises a wide range of ingredients, e.g. Cardboards and boxes, newspapers and magazines, heavy products such as catalogs and phone books, and the like.
  • ingredients e.g. Cardboards and boxes, newspapers and magazines, heavy products such as catalogs and phone books, and the like.
  • deinking quality or deinking paper a fraction from the waste paper bulk is required, which is referred to as deinking quality or deinking paper and consists largely of newspapers, magazines and similar paper products.
  • a method for sorting waste paper bulk goods is known, with which higher quality waste paper types, in particular deinking paper, are to be obtained from the waste paper bulk goods.
  • the waste paper collectible is in turn first introduced into a shredding device in order to keep the collectible shredded into snippets of the same size.
  • the shredded waste paper collectible is then introduced into the entrance of a zigzag sifter, through which air is blown in counterflow. This blows lighter paper goods upwards out of the zigzag sifter, while the heavier fraction falling down is discharged as mixed paper.
  • the lighter bulk goods blown out upwards are introduced into a second zigzag sifter, through which air is also blown in counterflow in order to separate heavier parts and cardboard that still exist and fall downwards out of the second zigzag sifter.
  • the light bulk goods blown out of the second zigzag sifter are collected as deinking paper. With this process, too, it is necessary to first shred the waste paper bulk into small pieces of as uniform a size as possible so that a sufficient separation can be achieved with the subsequent air classifications.
  • the present method it is possible to carry out the sorting without comminuting the waste paper, which makes the method considerably easier and cheaper.
  • the personnel requirements for manual re-sorting can be significantly reduced.
  • the comminuted commodity is subjected to a coarse sieving for separating large pieces of cardboard and cardboard and also a fine sieving for separating small impurities such as plastic parts, glass and the like.
  • the remaining collected goods then go through an intermediate band air sifting in cross-flow, the lighter collected loose goods being fed to the further process steps, while heavier parts which have fallen through are removed for a separate further treatment.
  • the intermediate band wind sifting has the function of separating the very heavy portion of the sieved collected goods. These are primarily heavier cardboards, heavier catalogs and heavy rubbish.
  • the collective goods blown out in the intermediate band wind sifting is introduced into the entrance of a zigzag sifter, through which air is blown in counterflow, the airflow being set such that lighter paper goods are blown out of the zigzag sifter upwards.
  • the paper blown out of the zigzag sifter is collected as deinking paper.
  • the heavier bulk goods emerging from the first zigzag sifter can be introduced into the entrance of a second zigzag sifter in order to blow out the remaining lighter paper goods upwards and in the circuit back to the entrance of the first zigzag sifter.
  • remaining closed newspapers and the like can be opened and obtained as deinking paper.
  • a stronger countercurrent is preferably used in the second zigzag sifter.
  • the waste paper collectible is loaded into a drop point 2 and transported to a screening device 6 for coarse screening with a conveyor belt in order to separate large pieces of cardboard and cardboard.
  • the sieve size of the sieve device 6 can be determined, for example, by square sieve openings with side lengths of approximately 0.5 m or round sieve openings with a diameter of 0.5 m.
  • the remaining material is subjected to a fine screening in a screening drum 8, in which small parts, such as plastic parts, glasses or other small impurities, are separated off.
  • the sieve width of the sieve drum 8 can be selected such that parts with a maximum extension of less than 170 mm are separated out.
  • the screened material is separated by placing it on a high-speed conveyor belt, the speed of which can be about 2-3 m / s.
  • the material is lifted through a nozzle (not shown) installed under the conveyor belt head by means of air, which in this example has a flow rate of 10-15 m / s, with light materials being lifted more strongly and into the suction flow of a suction hood 12 arrive while the heavier materials fall onto a lower conveyor belt.
  • manual re-sorting can also be carried out in order to separate cardboards from stuck, heavy catalogs and the like.
  • the collected goods which have been processed in the intermediate band air sifting and freed from the very heavy materials, are now fed to a two-stage zigzag sifter.
  • the material falls via a cellular wheel sluice from above into the entrance 20 of an elongated container with a rectangular cross section, which is set up vertically and has a plurality of zigzag-shaped turns in the longitudinal direction and forms a first zigzag sifter 21.
  • the first zigzag sifter 21 is flowed through from bottom to top by a strong air flow, in which the air flow velocity can be, for example, 8-10 m / s, the cross-sectional area of the flow channel of the first zigzag classifier in this example being 1.44 m 2 .
  • the collected goods must therefore fall downwards against this air flow through the zigzag-shaped path, with a considerable part of the newspapers already opening up and thus appearing as a lighter material in countercurrent due to its increased effective surface area.
  • Lighter materials such as opened newspapers and magazines are carried upwards and sucked out of an upper exit 24 of the first zigzag sifter 21, and no longer have to be sorted.
  • the heavier cardboards and folded newspapers fall down through the first zigzag sifter 21 and exit at its lower exit 22.
  • This product emerging from the lower outlet 22 of the first zigzag sifter 21 is now treated in a second zigzag sifter 31 according to the same principle by being transported to the inlet 30 thereof.
  • this second zigzag sifter 31 an even stronger upward air flow is used, the flow speed of which can be, for example, 10-14 m / s.
  • the cross-sectional area of the second zigzag classifier is 1 m 2 in this example.
  • folded newspapers once again have the opportunity to develop in countercurrent when falling through the zigzag sifter 31.
  • the lighter material thus blown upward in the second zigzag sifter 31 is sucked off at an upper outlet 34 of the second zigzag sifter 31 and fed back to the first zigzag sifter 21 and introduced into its inlet 20. In this way, the material passes through the cycle until it is finally either sucked out of the upper outlet 24 of the first zigzag sifter 21 as deinking paper or falls through the lower outlet 32 of the second zigzag sifter 31.
  • the material discharged from the upper outlet 24 of the first zigzag sifter 21 is collected as deinking paper, while the material which has fallen out of the lower outlet 32 of the second zigzag sifter 31 is discharged as mixed paper or is subjected to further sorting steps.
  • FIG. 2 shows a zigzag sifter 21 that is particularly suitable for use with the method.
  • the upper input 20 is used to introduce the bulk goods.
  • the line leading to the upper outlet 24 branches off from the zigzag sifter 21 at a certain distance below the upper inlet 20, so that heavier cardboards cannot get directly into the exhaust air flow into the outlet 24.
  • the zigzag sifter 21 has a plurality of arcuate sections 25 which are combined to form a serpentine flow channel. This arched design prevents the formation of material nests and supports the complete opening of newspapers.
  • deinking paper can be obtained with good purity, so that there is no longer a need for manual sorting, and with high yield from the waste paper bulk.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)
EP03004352A 2002-03-04 2003-02-28 Procédé pour trier des vieux papiers pour recupérer du papier à désencré Expired - Lifetime EP1342832B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10209525A DE10209525C1 (de) 2002-03-04 2002-03-04 Verfahren zum Sortieren von Altpapiersammelware zum Gewinnen von Deinkingpapier und Vorrichtung zur Durchführung des Verfahrens
DE10209525 2002-03-04

Publications (3)

Publication Number Publication Date
EP1342832A2 true EP1342832A2 (fr) 2003-09-10
EP1342832A3 EP1342832A3 (fr) 2005-09-07
EP1342832B1 EP1342832B1 (fr) 2007-03-28

Family

ID=27740630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004352A Expired - Lifetime EP1342832B1 (fr) 2002-03-04 2003-02-28 Procédé pour trier des vieux papiers pour recupérer du papier à désencré

Country Status (5)

Country Link
EP (1) EP1342832B1 (fr)
AT (1) ATE358209T1 (fr)
DE (2) DE10209525C1 (fr)
DK (1) DK1342832T3 (fr)
ES (1) ES2284996T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019132662A1 (fr) 2017-12-28 2019-07-04 Didid Appareil et procédé permettant de séparer des coquillages d'un mélange de déchets de plage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135841B (de) * 1960-06-09 1962-09-06 Dr Theodor Eder Verfahren und Vorrichtung zum Trennen koernigen Gutes in wenigstens zwei Endfraktionen
DE2542571C3 (de) * 1975-09-22 1981-04-23 Budde, Bernhard, Dipl.-Ing., 1000 Berlin Verfahren und Vorrichtung zur Sortentrennung von Altpapieren
DE29722242U1 (de) * 1997-12-01 1998-07-23 Trienekens GmbH, 41747 Viersen Verbesserte Vorrichtung zur Sortierung von Verpackungsabfällen
DE19957548A1 (de) * 1999-11-12 2001-05-23 U T G Ges Fuer Umwelttechnik G Verfahren und Einrichtung zur Sortierung eines Papiergemisches
DE10010354C2 (de) * 2000-03-07 2003-02-06 Bueckmann Gmbh Tech Gewebe Und Verfahren und Vorrichtung zur Steuerung des Weißegrades eines Schüttgutes aus zerkleinerten Papierfraktionen
DE10014872C2 (de) * 2000-03-24 2002-01-31 Isis Gmbh Servicegesellschaft Verfahren und Einrichtung zur Aufbereitung eines Papiergemisches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019132662A1 (fr) 2017-12-28 2019-07-04 Didid Appareil et procédé permettant de séparer des coquillages d'un mélange de déchets de plage

Also Published As

Publication number Publication date
ES2284996T3 (es) 2007-11-16
DE10209525C1 (de) 2003-12-18
EP1342832B1 (fr) 2007-03-28
EP1342832A3 (fr) 2005-09-07
DE50306885D1 (de) 2007-05-10
DK1342832T3 (da) 2007-07-23
ATE358209T1 (de) 2007-04-15

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