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EP1342832B1 - 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

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Publication number
EP1342832B1
EP1342832B1 EP03004352A EP03004352A EP1342832B1 EP 1342832 B1 EP1342832 B1 EP 1342832B1 EP 03004352 A EP03004352 A EP 03004352A EP 03004352 A EP03004352 A EP 03004352A EP 1342832 B1 EP1342832 B1 EP 1342832B1
Authority
EP
European Patent Office
Prior art keywords
paper
goods
collected
zigzag
blown
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.)
Expired - Lifetime
Application number
EP03004352A
Other languages
German (de)
English (en)
Other versions
EP1342832A3 (fr
EP1342832A2 (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
Sulo Nord West GmbH 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 Sulo Nord West GmbH and Co KG filed Critical Sulo Nord West GmbH and Co KG
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 collection stock to obtain deinking paper.
  • Waste paper is today collected on a large scale in various ways in order to extract raw materials for recycling.
  • the waste paper collection product comprises a wide range of ingredients, such as e.g. Cardboard and cardboard boxes, newspapers and magazines, heavy products such as catalogs and directories, and so on.
  • ingredients such as e.g. Cardboard and cardboard boxes, newspapers and magazines, heavy products such as catalogs and directories, and so on.
  • deinking or deinking paper is required, consisting mainly of newspapers, magazines and similar paper products.
  • a method for sorting waste paper collection is known, with the higher quality waste paper types, especially deinking paper, to be obtained from the recovered paper collection.
  • the waste paper collection material is in turn first introduced into a shredding device, so as to obtain the collected goods shredded into possible equal size chips.
  • the shredded wastepaper collection material is then introduced into the entrance of a zigzag sifter, through which air is blown in countercurrent. This blows lighter paper up the zigzag sifter while discharging the heavier fraction falling down as a mixed paper.
  • the blown up lighter collected goods is introduced into a second zigzag sifter, through which air is also blown in countercurrent, so as to separate any remaining heavier parts and cardboard, which fall down from the second zigzag sifter.
  • the light collected goods blown out of the second zigzag sifter are collected as deinking paper. Also in this method, it is necessary to first shred the waste paper collection in small pieces as uniform size as possible, so that with the subsequent air classification sufficient separation can be achieved.
  • the uncut bulk is subjected to coarse screening to separate large cardboard and board pieces and also fine screening to remove small contaminants such as plastic parts, glass and the like.
  • the remaining collected material then passes through an intermediate-band air separation in the cross-flow, the blown out lighter collected goods is supplied to the further process steps, while failed heavier parts are discharged to a separate further treatment.
  • the intermediate-band wind sifter has the function to separate the very heavy portion of the sifted collected goods. These are primarily heavier boards, heavier catalogs and heavy rubbish.
  • the collected goods blown out in the antiband-Luftsichtung is introduced into the inlet of a zigzag sifter, through which air is blown in countercurrent, with the air flow adjusted to blow lighter paper up the zigzag sifter.
  • the paper blown out of the zigzag sifter is collected as deinking paper.
  • the heavier collected material coming down from the first zigzag sifter may be introduced into the entrance of a second zigzag sifter to blow up the remaining lighter paper product up and in circulation to transport back to the entrance of the first zigzag sifter.
  • the second zigzag sifter it is preferable to work with a stronger counterflow.
  • the waste paper collection material is loaded into a delivery point 2 and transported by a conveyor belt to a screening device 6 for coarse screening in order to separate large cardboard and cardboard pieces.
  • the mesh width of the screening device 6 can be determined, for example, by square sieve openings with side lengths of about 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.
  • the screen width of the screening drum 8 can be selected so that parts with a maximum extent of less than 170 mm are discarded.
  • the screened material is separated by application to a high-speed conveyor belt whose speed can be about 2-3 m / s.
  • the material is raised by means of a nozzle (not shown) installed below the conveyor head by means of air, which in this example has a flow rate of 10-15 m / s, raising more light materials and into the suction flow of a suction hood 12, while the heavier materials fall on a lower conveyor belt.
  • manual post-sorting can still be carried out in order to separate boards from pasted, heavy catalogs and the like.
  • the collected in the intermediate belt air classification, freed from the very heavy materials collected goods is now fed to a two-stage zigzag sifter.
  • the material falls from above via a rotary valve into the entrance 20 of an oblong container of rectangular cross section, which is vertically positioned and has a plurality of zigzag windings in the longitudinal direction and forms a first zigzag sifter 21.
  • the first zigzag sifter 21 is traversed from bottom to top by a strong air flow, in which the air flow velocity
  • 8 - 10 m / s may be, wherein the cross-sectional area of the flow channel of the first zigzag sifter in this example is 1.44 m 2 .
  • the collected goods must thus fall down against the flow of air through the zigzag path, with a significant portion of the newspapers already flaking and thereby appearing as a lighter material in countercurrent through its increased effective surface area.
  • Lighter materials such as unfolded newspapers and magazines are entrained upward and sucked from an upper outlet 24 of the first zigzag sifter 21, and no longer need to be rearranged.
  • the heavier boards and still 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 according to the same principle in a second zigzag sifter 31 by being transported to its inlet 30.
  • the flow rate can be for example 10 - 14 m / s.
  • the cross-sectional area of the second zigzag sifter is 1 m 2 in this example.
  • folded newspapers have once again opportunity to unfold when falling through the zigzag sifter 31 in countercurrent.
  • the lighter material blown upwards in the second zigzag sifter 31 is sucked off at an upper outlet 34 of the second zigzag sifter 31 and returned to the first zigzag sifter 21 and introduced into its inlet 20. In this way, the material runs through the circuit until it is either sucked out of the upper output 24 of the first zigzag sifter 21 as Deinkingpapier or falls through the lower output 32 of the second zigzag sifter 31.
  • the material discharged from the upper exit 24 of the first zigzag sifter 21 is collected as deinking paper, while the material dropped out of the lower exit 32 of the second zigzag sifter 31 is removed as mixed paper or subjected to further sorting steps.
  • FIG. 2 shows a zigzag classifier 21 which is particularly suitable for use with the method.
  • the upper input 20 is used to introduce the collected goods.
  • the leading to the upper output line 24 branches off at some distance below the upper input 20 from the zigzag separator 21, so heavier cardboard can not get directly into the exhaust air flow into the output 24.
  • the zigzag sifter 21 has a plurality of arcuate sections 25 which are assembled to provide a serpentine flow channel. This arcuate design prevents the formation of material nests and supports the complete flipping of newspapers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)

Claims (8)

  1. Procédé de tri de vieux papiers collectés pour obtenir du papier à désencrer, dans lequel le produit de collecte non fragmenté est soumis à un criblage grossier pour éliminer les grands morceaux de carton et à un criblage fin pour éliminer les petites impuretés, le produit de collecte restant est soumis, sans être fragmenté, à une séparation aéraulique interconvoyeurs en flux transversal et seul le produit de collecte éjecté par soufflage est dirigé vers les étapes ultérieures tandis que les fractions plus lourdes refusées font l'objet d'une transformation distincte, le produit de collecte éjecté par soufflage lors de la séparation aéraulique interconvoyeurs est introduit dans l'entrée (20) d'un premier séparateur en zigzag (21) parcouru par de l'air soufflé à contre-courant, le courant d'air étant réglé de façon que les papiers plus légers soient éjectés du séparateur en zigzag vers le haut par une sortie (24), le papier éjecté par soufflage par le haut étant recueilli en tant que papier à désencrer.
  2. Procédé selon la revendication 1, dans lequel le produit de collecte restant, qui sort du premier séparateur en zigzag (21) par le bas, est introduit dans l'entrée (30) d'un second séparateur en zigzag (31) d'où les papiers plus légers restants sont éjectés par soufflage vers le haut et ramenés suivant un circuit à l'entrée (20) du premier séparateur en zigzag (21), tandis que le reste du produit de collecte est évacué en tant que papier mixte par la sortie inférieure (32) du second séparateur en zigzag.
  3. Procédé selon la revendication 2, dans lequel le second séparateur en zigzag (31) est parcouru par un contre-courant d'air possédant une vitesse d'écoulement supérieure à celle du premier séparateur en zigzag (21).
  4. Procédé selon la revendication 3, dans lequel le premier séparateur en zigzag (21) est parcouru par un contre-courant à une vitesse d'écoulement de 8 à 10 m/s et le second séparateur en zigzag (31) est parcouru par un contre-courant à une vitesse d'écoulement de 10 à 15 m/s.
  5. Procédé selon une des revendications précédentes, dans lequel, lors du criblage grossier, des fractions supérieures dans l'une de leurs dimensions à 0,5 m sont interceptées dans un dispositif de criblage (6) et évacuées.
  6. Procédé selon une des revendications précédentes, dans lequel le criblage fin est réalisé à l'aide d'un tambour de criblage (8).
  7. Dispositif pour mettre en oeuvre un procédé de tri de vieux papiers collectés pour obtenir du papier à désencrer selon une des revendications précédentes, comprenant un dispositif de criblage (6) pour le criblage grossier du produit de collecte non fragmenté afin d'éliminer les grands morceaux de carton et un dispositif de criblage (8) pour le criblage fin afin d'éliminer les petites impuretés, comprenant un séparateur aéraulique interconvoyeurs conçu de façon à soumettre le produit de collecte restant, sans le fragmenter, à une séparation aéraulique interconvoyeurs en flux transversal, comprenant un premier séparateur en zigzag (21) qui est disposé pour recevoir à son entrée (20) le produit de collecte éjecté par soufflage lors de la séparation aéraulique interconvoyeurs et qui est conçu pour être parcouru par de l'air soufflé à contre-courant, de façon que les papiers plus légers soient éjectés du séparateur en zigzag vers le haut par une sortie (24), et comprenant un dispositif collecteur pour collecter ce papier éjecté par soufflage vers le haut en tant que papier à désencrer.
  8. Dispositif selon la revendication 7, dans lequel les séparateurs en zigzag (21, 31) sont chacun constitués d'une pluralité de segments arqués (25) qui forment un canal d'écoulement à profil en forme de serpent.
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 EP1342832A2 (fr) 2003-09-10
EP1342832A3 EP1342832A3 (fr) 2005-09-07
EP1342832B1 true 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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2020192B1 (en) 2017-12-28 2019-07-08 Didid Apparatus and method for separating sea shells from a beach garbage mixture

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

Also Published As

Publication number Publication date
ATE358209T1 (de) 2007-04-15
DE10209525C1 (de) 2003-12-18
ES2284996T3 (es) 2007-11-16
EP1342832A3 (fr) 2005-09-07
DE50306885D1 (de) 2007-05-10
EP1342832A2 (fr) 2003-09-10
DK1342832T3 (da) 2007-07-23

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