EP1248880A1 - Verfahren und einrichtung zur sortierung eines papiergemischs - Google Patents
Verfahren und einrichtung zur sortierung eines papiergemischsInfo
- Publication number
- EP1248880A1 EP1248880A1 EP00988574A EP00988574A EP1248880A1 EP 1248880 A1 EP1248880 A1 EP 1248880A1 EP 00988574 A EP00988574 A EP 00988574A EP 00988574 A EP00988574 A EP 00988574A EP 1248880 A1 EP1248880 A1 EP 1248880A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- fraction
- mixture
- paper mixture
- shredder
- 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- Withdrawn
Links
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 invention relates to a method according to the preamble of claim 1
- Sorting of a paper mixture in which the paper mixture is crushed to a grain size in the range of approximately 20 to 80 mm and the shredded paper mixture is separated by means of wind sifting at a separation speed of between 1 and 5 m / sec into a heavy material fraction containing mixed paper and a light material fraction containing deinking
- the invention further relates to a device according to the preamble of claim 11 for sorting a paper mixture with a shredder for shredding the paper mixture and a waste classifier connected downstream of the shredder for separating the shredded paper mixture into a heavy material fraction and into a light material fraction, the water separator having a sighting cross-section, in the a separation speed between 1 DIS 5 m / sec adjustable
- sorting staff is used to separate the contents of depot containers, bulk bulk goods and / or bundle bulk goods into different qualities and the paper / cardboard qualities required for reuse, including demking.
- Quality to be achieved Devices for sorting a paper mixture generally comprise conveyor belts or sorting belts with sorting staff, which are used to produce a demking quality from the paper mixture supplied Storages such as cardboard, cardboard and possibly books as well as non-paper components are sorted out by hand, among other things. With this known sorting, cardboard and cardboard are selected to produce a fraction that mainly contains cardboard
- a deinking fraction, a mixed paper fraction and a cardboard fraction are obtained in this way.
- the deinking fraction consists largely of newspapers and magazines and, as required, has at least 60% newspapers and a proportion of contaminants, e.g. cardboard, cardboard and non-paper components, of a maximum of 3% , while the fraction of mixed paper, newspapers and magazines (less than 40%), cardboard, other papers, cardboard (over 60%) and to a lesser extent contains plastics and other storage materials.
- the cardboard fraction mainly consists of cardboard (over 70%), Cardboard boxes, solid cardboard and the like
- DE-A-25 42 571 describes a method for sorting waste paper, in which the waste paper is placed directly in a shredder and the shredded waste paper is split into three fractions by means of two air separators connected in series.
- the shredded waste paper is loosened in the first water separator and to split off a first heavy fraction, which contains cardboard, cardboard boxes and heavy kraft paper, which is highly enriched.
- the remaining light fraction from the first water classifier is then fed to the second water classifier and into a second heavy fraction, which contains cardboard boxes, cardboard boxes and heavy kraft paper, highly enriched, as well as in a light fraction, which contains magazines, newspapers and other press papers, enriched, separated.
- the grain size is accordingly the diagonals of the 10x10 edges of the shredding 141 mm, whereby widespread small cardboard boxes as a whole are processed without being shredded
- DE-A-25 42 571 describes a method and a system for sorting and processing waste paper, in which the material fed is divided into three fractions, which are subsequently characterized in more detail by means of color detection.
- a blower is used for ejection, but it does not perform wind separation
- DE-A-25 10 694 describes a process for the selection of papers, in which waste containing paper is ground and after separation in one The material is separated and a light material fraction is subsequently moistened and thereby separated again. Particularly pure demilgment qualities cannot be achieved with this technology
- a high-quality fraction of department store paper (type B 19) and a high-quality fraction deinking can be produced in a cost-effective manner
- screening with the specified screen hole widths enables the waste paper to be shredded to the recommended size Grain size and the wind sifting at such a separation speed also high throughput with a consistently high quality of the fractions produced
- the paper mixture is sieved and loosened by means of a ballistic separator provided with sieve openings.
- a suitable ballistic separator essentially comprises a plurality of flat profiles which are arranged next to one another at an incline and which can be moved horizontally and vertically, for example by means of a crankshaft drive, and - in contrast to ballistic separators known from density classification or sorting - are provided with through-openings for sieving.
- a particularly productive wind sifting takes place after crushing to a grain size in the range of about 40 to 90 mm
- the paper mixture When the paper mixture is shredded to a grain size in the range of about 30 to 60 mm, a particularly high quality of separation between mixed paper and deinking can be achieved with a relatively small amount of shredding.
- the cardboard contained in the shredded paper mixture can be more than 95% separate and largely enrich in the heavy goods fraction
- the white potential of stapled or glued papers for the deinking fraction can still be developed with a reasonable amount of shredding.
- the separation speed is in the range from 1.5 to 4.5 m / sec, preferably in the range from 1.7 to 3.5 m / sec, particularly high qualities can be ensured in the fractions produced
- a suitable air sifter is known, for example, from DE-U-297 09 918. If the wind sifting takes place in a zigzag sifter, one can Particularly high separation sharpness between mixed paper and deinking can be achieved if the wind sifting takes place in a cross-flow sifter, particularly trouble-free operation can be ensured
- the shredded paper mixture is fed into the air classifier in a particularly advantageous manner by means of a rotary valve, provided that it is designed as a conical or cross-flow classifier.
- the rotary valve is preferably eccentric in the feed channel arranged of the air classifier
- the shredded paper mixture is preferably mechanically conveyed to the air classifier.
- the mechanical requirement comprises a conveying device designed as a paddle screw, pieces of paper that are connected at their kinks or folds can be gently dissolved without causing more violent tears. which are held together by adhesive, torn apart and deinking into the fraction advised where, however, they are undesirable due to their adhesive content and associated processing difficulties.
- the mechanical conveying further preferably includes vibrators for feeding into the air classifier or for feeding to a cellular wheel sluice.
- the light material fraction that initially arises during wind sifting and contains the deinking fraction is advantageously split into the (conveying) air stream and deinking in a separating cyclone.
- the quality of the deinking fraction in particular the degree of whiteness, can be increased by presorting the paper mixture to be fed to the shredder by means of color and / or NIR (near infrared) detection and pneumatic discharge of identified contaminants.
- NIR near infrared
- through-colored papers can be separated early and effectively on the basis of their size and / or coloring, so that deinking and mixed paper fractions freed from through-colored papers can be produced.
- FIG. 1 shows a schematic representation of an exemplary embodiment of a device according to the invention for sorting a waste paper mixture
- the device for sorting a waste paper mixture shown schematically in FIG. 1 comprises a sieve designed as a ballistic separator 1, a shredder designed as a granulator 2, a wind sifter designed as a cone sifter 3, which is connected downstream of the granulator 2, and a cyclone 4 connected downstream of the cone sifter 3 2 has, as a crushing means, blow bars arranged distributed over the circumference and in the axial direction of a rotor, which, in cooperation with an associated stator, bring about a low-dust cutting and shearing crushing without squeezing the paper mixture into other shredder blocks which are otherwise different the granulator 2 by means of a sieve arranged below the rotor with a corresponding sieve opening and a return of the material which has not yet been sufficiently comminuted into the engagement area of the rotor
- the shredding means prevent several sides from sticking together during the shredding, so that, at most, small pieces of paper sticking to one another, for example by block-like punching, are produced a hammer mill is also suitable, in which a relatively high level of dust can possibly be accepted
- a filter 5 for separating dust from the carrier air is arranged downstream of the cyclone 4.
- a color sorting device 7 is connected between the ballistic separator 1 and the granulator 2, which separates colored paper components, for example colored papers, depending on the amount or amount of colored waste paper and the desired one The white sorting device 7 can be omitted if necessary Between the pelletizer 2 and the cone sifter 3, a conveyor device designed as a paddle screw 6 for conveying and loosening up the shredded paper mixture is arranged.
- An FE separator 8 with a downstream baler 9 is arranged downstream of the cone sifter 3 on the output side of the heavy material or the mixed paper fraction.
- the waste paper mixture delivered via a barrel collection is sieved and loosened by means of the ballistic separator 1 and fed to the granulator 2, where it is crushed to a grain size of approximately 35 mm.
- the sieving by means of the ballistic separator 1 separates approximately 10 to 25% of the paper mixture fed in as the upper run, which essentially comprises larger cardboards and already has the quality of department store paper (type B 19).
- the color sorting device 7 is connected between the ballistic separator 1 and the granulator 2, the through-colored papers are separated in this.
- the shredded and possibly freed of colored constituents waste paper mixture is then conveyed into the conical sifter 3 by means of the paddle screw 6 and vibrators (not shown) and there is split into a heavy goods fraction and a light goods fraction by means of an air flow (carrier air), the speed of the air flow in is set to about 3 m / sec.
- the heavy-duty fraction is the mixed paper fraction, which largely consists of lumpy cardboard / cardboard and other shreds of paper and a small proportion of other contaminants, as well as meeting the requirements for sorted mixed waste paper, a lower grade (grade B 12).
- the light material fraction comprises the deinking fraction and the conveying air flow. In the wind sifting, they are in the shredded paper mixture contained cardboard-containing components to more than 95% separated and enriched in the mixed paper fraction
- the light material fraction is fed to the cyclone 4 and separated there in deinking and air flow.
- the cyclone 4 is advantageously designed as a sifting cyclone with which in one process step or with one device, the deinking fraction can be separated from the carrier air and, at the same time, dust can be removed
- the air flow is then fed to the filter 5 and dedusted there
- the conical sifter 3 has a sifting cross section of approximately 0.01 to 0.4 m 2 , preferably 0.05 to 0.3 m 2, to the volume flow Air is adjusted in such a way that a separation speed of approximately 1 to 5 m / sec, preferably 1.5 to 4.5 m / sec and particularly preferably 1.7 to 3.5 m / sec results in order to achieve a sufficient throughput with the To ensure device, several air classifier 3 and shredder 2 are connected in parallel
- cone sifter 3 and cyclone 4 had run through, approximately 40.5% of mixed paper and approximately 59.5% of deinking, based on the waste paper mixture fed to shredder 2, were obtained in an experiment.
- the deinking fraction consists of significantly more than 97.5% made of thin paper and has only a small proportion of thin cardboard and other storage materials
- the amount of contaminants in the deinking fraction which significantly reduces the quality of the papers made from deinking, such as cardboard, adhesive backing wrapping papers and colored papers, were below 1.5% (mass% based on the input of the shredder)
- the device can be provided with a wave screen in order to automatically separate large cardboards 20 and to produce a high-quality fraction of cardboard in an economical manner
- a training of the sieve as a ballistic separator 1 has the advantage, however, that in addition to the sieve function, it is also counteracted by a certain cyclic beating
- the feed material takes on a loosening function and thus ensures that the shredder 2 is fed with individual or loose sheets as possible, so that no crushing of a multilayer newspaper / magazine can take place at the cut edges during the shredding.
- Such loosening significantly increases the yield of deinking
- the wind sifting is carried out by means of a cross-flow classifier in a modification of the abovementioned tests or the above exemplary embodiment, a compact design of the wind sifting stage can be achieved with little investment.
- the shredded paper mixture can advantageously be separated in free fall and any baking of wet pieces of paper on internals can be avoided.
- the paper mixture is sieved in two stages.
- the sieve designed as a ballistic separator 1 can be designed in two stages.
- a particularly expedient ballistic separator 1 can for this purpose have an essentially sawtooth-shaped profile with two successive areas of different sieve hole widths. In a first area, the screen hole width is approximately 40 to 60 mm. In a second area, the screen hole size is approximately 200 to 450 mm, preferably 280 to 400 mm.
- Such screening also leads to an additional loosening of the feed material, which is virtually transported over the first area and thus also contributes to an increase in the deinking yield.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19954737 | 1999-11-12 | ||
DE19954737 | 1999-11-12 | ||
DE1999157548 DE19957548A1 (de) | 1999-11-12 | 1999-11-30 | Verfahren und Einrichtung zur Sortierung eines Papiergemisches |
DE19957548 | 1999-11-30 | ||
PCT/DE2000/003932 WO2001036739A1 (de) | 1999-11-12 | 2000-11-10 | Verfahren und einrichtung zur sortierung eines papiergemischs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1248880A1 true EP1248880A1 (de) | 2002-10-16 |
Family
ID=26055537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00988574A Withdrawn EP1248880A1 (de) | 1999-11-12 | 2000-11-10 | Verfahren und einrichtung zur sortierung eines papiergemischs |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1248880A1 (de) |
AU (1) | AU2501701A (de) |
DE (1) | DE10083527D2 (de) |
WO (1) | WO2001036739A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115228900A (zh) * | 2022-07-25 | 2022-10-25 | 苏州嘉诺智能装备有限公司 | 废纸处理的纸塑分离系统和纸塑分离方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2542571C3 (de) * | 1975-09-22 | 1981-04-23 | Budde, Bernhard, Dipl.-Ing., 1000 Berlin | Verfahren und Vorrichtung zur Sortentrennung von Altpapieren |
US4127476A (en) * | 1977-06-13 | 1978-11-28 | Fred D. Iannazzi | Air-classification apparatus and process for the segregation of mixed office-paper waste |
DE9113315U1 (de) * | 1991-10-26 | 1992-01-02 | Gerlach-Anlagenbau GmbH, 56249 Herschbach | Anlage zur Sortierung und Aufbereitung von Altpapier |
EP0779109A1 (de) * | 1995-12-13 | 1997-06-18 | Beloit Technologies, Inc. | Windsichter mit geringer Strömungsgeschwindigkeit |
NL1006582C1 (nl) * | 1997-07-14 | 1999-01-15 | Bollegraaf Appingedam Maschf | Sorteertransporteur voor het scheiden van papier en karton. |
DE19907983C2 (de) * | 1999-02-25 | 2002-03-14 | U T G Ges Fuer Umwelttechnik G | Verfahren und Einrichtung zur Sortierung eines Papiergemisches |
-
2000
- 2000-11-10 EP EP00988574A patent/EP1248880A1/de not_active Withdrawn
- 2000-11-10 AU AU25017/01A patent/AU2501701A/en not_active Abandoned
- 2000-11-10 WO PCT/DE2000/003932 patent/WO2001036739A1/de not_active Application Discontinuation
- 2000-11-10 DE DE10083527T patent/DE10083527D2/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0136739A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10083527D2 (de) | 2002-12-05 |
AU2501701A (en) | 2001-05-30 |
WO2001036739A1 (de) | 2001-05-25 |
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Owner name: RWE UMWELT ENGINEERING & SERVICE GMBH |
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Owner name: REMONDIS ENGINEERING & SERVICE GMBH |
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18D | Application deemed to be withdrawn |
Effective date: 20051001 |