CS220858B1 - Method of treating the waste paper - Google Patents

Method of treating the waste paper Download PDF

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Publication number
CS220858B1
CS220858B1 CS788056A CS805678A CS220858B1 CS 220858 B1 CS220858 B1 CS 220858B1 CS 788056 A CS788056 A CS 788056A CS 805678 A CS805678 A CS 805678A CS 220858 B1 CS220858 B1 CS 220858B1
Authority
CS
Czechoslovakia
Prior art keywords
fiber
long
waste paper
waste
short
Prior art date
Application number
CS788056A
Other languages
Czech (cs)
Slovak (sk)
Inventor
Marcel Lalak
Anton Kostka
Original Assignee
Marcel Lalak
Anton Kostka
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 Marcel Lalak, Anton Kostka filed Critical Marcel Lalak
Priority to CS788056A priority Critical patent/CS220858B1/en
Priority to NL7904845A priority patent/NL7904845A/en
Priority to DE19792926185 priority patent/DE2926185A1/en
Priority to IT2396479A priority patent/IT1125398B/en
Priority to DD79214822A priority patent/DD145293A1/en
Priority to GB7927549A priority patent/GB2037340A/en
Priority to ES483485A priority patent/ES483485A1/en
Priority to FR7925509A priority patent/FR2443528A1/en
Priority to JP15645479A priority patent/JPS5580588A/en
Publication of CS220858B1 publication Critical patent/CS220858B1/en

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/04Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30Defibrating by other means
    • D21B1/32Defibrating by other means of waste paper
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02Working-up waste paper
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/64Paper recycling

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

Short fibers obtained by fractionating waste paper reduce in the course of processing of waste paper the bonding properties of long fiber fractions. According to this invention the short fiber fractions are first separated from the long fiber fractions, the long fiber fractions regenerated by milling, advantageously by fibrillation milling, and subsequently at least part of the earlier separated short fiber fraction added to the regenerated long fiber fraction for further processing.

Description

Vynález sa týká spůsobu na papierenské zužitkovanie odpadov vzniknutých pri frakclonácii zberového papiera.BACKGROUND OF THE INVENTION The present invention relates to a method for recovering paper waste from the fractionation of waste paper.

Jedným z hlavných negativných javov při špracovaní papieroviny získanej zo zberového papiera sú jemné a najjemnejšie- -podiely vlákien. Tieto nielenže zvyšujú stupeň mletia, zhoršujú odvodňovatelnosť, ale hlavně znemožňujú správné opracovanie vlákna mletím a tým i jeho dokonalá regeneráciu, která je u vlákna získaného zo zberového papiera najdóležitejšou podmienkou před -spracovaním na papierenskom stroji,One of the main negative phenomena in the processing of pulp obtained from recovered paper is the fine and finest fiber fractions. These not only increase the degree of grinding, impair the drainability, but mainly prevent proper processing of the fiber by grinding and hence its perfect regeneration, which is the most important precondition for a fiber obtained from recovered paper before being processed on a paper machine,

Ako sa ukazuje z pozorovania doteraz získaných výsledkov, je vidieť, že jemné podiely znižujú mechanické pevnosti predovšetkým tým, že vyplňujú medzery medzi jednotlivými vláknami, čím sa zváčšuje vzdialenosť medzi vázby schopnými vláknami. V dosledku toho sa zvyšuje i stupeň mletia a zhoršuje odvodňovatelnosť. Jemné podiely vlákien svojou prítomnosťou v papierovine, protože sú velmi tuhé, zvyšujú potřebný mlecí tlak počas mletia. V súvislosti s tým narastá množstvo jemných podielov, pretože vysokým tlakom pri mletí dochádza k dreleniu dlhých vlákien. Regenerácia dlhých vlákien je v tomto· případe značné zhoršená, - - -pretože sa vyžaduje právo· velmi -šetrné, v prevážnej- miere vysoko fibrilačné mletie, ktoré prebieha pri znížených mlecích tlakoch.As can be seen from the observations of the results obtained so far, it can be seen that the fine fractions reduce the mechanical strengths, in particular by filling the gaps between the individual fibers, thereby increasing the distance between the bondable fibers. As a result, the degree of grinding is also increased and the drainage is impaired. The fine proportions of fibers by their presence in the pulp, because they are very stiff, increase the grinding pressure required during milling. Accordingly, the amount of fines is increasing as long fibers are crushed by the high grinding pressure. The regeneration of long fibers is considerably impaired in this case - - - because the right is required · very-considerate, largely highly fibrillation milling, which takes place at reduced grinding pressures.

Aby s,a umožnila čo možno najváčšie regenerácia vlákna získávaného zo zberového papiera, je velmi výhodné zavedeme frakcionácie zberového papiera.In order to enable and recover as much as possible the fiber obtained from the waste paper, it is very advantageous to introduce fractionation of the waste paper.

Frakcionáciou sa získajú - dve frakcie, dlhovláknitá a krátkovláknitá — odpad. Tento odpad pozostáva z jemných podielov vlákien a plnidiel v množstvo - až - 30 %. Oddělená dlhovláknitá frakcia sa - spracováva- samostatné fibrilačným mletím, - čím sa - značné zvýšia vázobné vlastnosti vlákie, čo - sa prejaví zvýšenými mechanickými pevnosťami papierenského listu vzniknutého z ' týchtoi vlákien.Fractionation yields - two fractions, long fiber and short fiber - waste. This waste consists of a fine proportion of fibers and fillers in an amount of - up to - 30%. The separated long-fiber fraction is - processed - by separate fibrillation milling, - thereby greatly enhancing the fiber binding properties, resulting in increased mechanical strengths of the paper sheet formed from these fibers.

Spracovanie zberového papiera -frakcionáciou však doteraz - - - nenašlo - priemyselné uplatnenie, pretože pře -spracovanie krátkovláknitej -frakcie, ktorej vzniká až 30 % -sa nenašlo -doteraz priemyslové využitie. Tým vznlkajú značné hospodářské straty sp6sobené -nutnosťou likvidácie velkého množstva odpadu, zhoršením životného prostredia -a vysokými energetickými nárokmi.However, the processing of recovered paper by fractionation has not yet - - - found industrial application, since the reprocessing of the short-fiber fraction, which produces up to 30%, has not yet been found - industrial use. This results in considerable economic losses due to the need to dispose of large amounts of waste, environmental degradation and high energy requirements.

Spracovanie tohto odpadu je predmetom vynálezu, ktorého - podstata spočívá v tom, že odseparovaný -odpad představovaný zmesou krátkých - vlákien a plnidiel sa - v ďalšom procese spracovanie vráti spát k podielu dlhých vlákien, ktoré - - před zmiešaním s odpadom boli vymleté, s výhodou - fibrilačným spůsobom, na požadované mechanic ké hodnoty, pričom množstvo vráteného odpadu z frakcionácie sa může pohybovat v rozmedzí 10—100 % z odseparovaného odpadu. Odseparovaný odpad je možné použit i - do inej látkovej suspenzie, než z ktorej bol odfrakciovaný, za účelom zníženia množstva plnidiel, alebo získania nových papierenských vlastností finálnej zmesi.The treatment of this waste is the object of the invention, which is characterized in that the separated waste represented by a mixture of short fibers and fillers is returned to the proportion of long fibers which - before being mixed with the waste, have been ground, preferably - by a fibrillation process, to the desired mechanical values, the amount of fractionation waste returned may be in the range of 10-100% of the separated waste. The separated waste can also be used - in a different material suspension than that from which it was extracted to reduce the amount of fillers or to obtain new papermaking properties of the final mixture.

Proces znázorněný na pripojenom výkrese prebieha tak, že zberový papier sa rozruší v rozvlákňovači 1, odkial je diskontinuálně, alebo kontinuálně odťahovanj do zásobnej nádrže 2, z ktorej je prúd vodolátky vedený na separáciu nečistét 3, kde sa -odstránia nerozvláknené podiely a špeťažšie a lahšie nečistoty.The process illustrated in the accompanying drawing is such that the recovered paper is disrupted in the pulper 1 from where it is discontinuously or continuously withdrawn into a storage tank 2 from which a stream of hydrofoils is guided to separate the impurities 3, where the unbranched fractions are removed. dirt.

Týchto nečistót zbavená látka je potom vedená do zásobnej nádrže 4, odkial' je čerpaná na frakcionátor 5. Tu sa odlúčia -jem.né podiely vlákien a plnidlá v množstve do 30 % celkového množstva papieroviny. - Z firakcionátora ide prúd dlhých vlákien do zásobnej nádrže 7. Z nádrže 7 je cez zahusťovač 8 a zásobnú nádrž 9 dlhovláknitá frakcia čerpaná na- mlyny 10, v ktorých sa podrobí fibrUačnému mletiu a je zhromažďovaná v zmiešacej nádrži 11. Týmto mletím sa zregenerujú vázobné schopnosti vlákien a -začší sa ich specifický povrch. - Zváčšením Specifického povrchu dochádza poČas tvorby - papierenského listu k zváčšeniu dotykových plSch jednotlivých vlákien a jemné podiely vlákien — odpad, ktoré -svojou morfológiou tu vytvárajú mrtvú nefunkčnú časť papieroviny, akýsi druh plnidlá, už nebránia vzniku vázieb tak, -ako tomu je pri- neregenerovanom vlákně a je leh možno - - v - plnom -rozsahu vrátit spáť - do suspenzie- a spoločne spracovať.The pollutant-free impurities are then fed to the storage tank 4 where it is pumped to the fractionator 5. Here, the fines and fillers are separated in an amount of up to 30% of the total stock. The long fiber stream flows into the storage tank 7. From the tank 7, through the thickener 8 and the storage tank 9, the long-fiber fraction is pumped to the mills 10 in which it is subjected to fibrous grinding and collected in the mixing tank 11. and the specific surface area of the fibers begins. - By increasing the specific surface, during the formation of the paper sheet, the plurality of individual fibers are increased and the fine fiber fractions are wastes which, by their morphology, create a dead nonfunctional portion of the pulp, a kind of filler, no longer prevent binding as they do. non-regenerated fiber and it is possible - in full - to return to sleep - into suspension - and to process together.

Krátkovláknitá - frakcia — odpad z - - frakcionátora -5 ide do nádrže - 6, - odkial - je čerpaná - --do zmešovacej nádrže -11, alebo - cez zahusťovač 12 do zmešovacej nádrže 11. · · Z nádrže - 11 je zmiešaná látka - vedená - na - spracovanie k papierenskému strojů. Množstvem přidávané j krátkovláknité j frakcie — -odpař du do -nádrže 11 je - možno regulovat ako je uvedené v nasledovnej tabulke odvodňovatelnosť, stupeň mletia, množstvo plnidlá a iné papierenské vlastnosti pri zachovaní vysokých mechanických pevností dosiahnutých správnou regeneráciou dlhovláknitého- podielu.Short fiber - fraction - waste from - - fractionator -5 goes to tank - 6, - from where - is pumped - - to the mixing tank -11, or - through the thickener 12 to the mixing tank 11. · · From the tank - 11 is mixed substance - led - on - processing to paper machines. The amount of short-fiber fraction added to the tank 11 can be controlled as shown in the following table: drainage, grinding degree, filler amount and other papermaking properties while maintaining the high mechanical strengths achieved by proper regeneration of the long-fiber fraction.

Papierovina vyrobená podlá popísaného spósobu je vhodná pře použitie na výroby kvalitných baliacich papierov, kartónov a lepeniek -s vysokými nárokmi na pevnost. Súčasne -sa znižujú straty vlákien, zlepšuje sa životné prostredie, vyšší sa využívá -dřevná hmota a šetří sa čerstvou dřevnou hmotou a znižuje sa zanáška čerstvých plnidiel.The pulp made according to the described process is suitable for use in the production of high-quality wrapping papers, cartons and boards with high strength requirements. At the same time, it reduces fiber loss, improves the environment, uses wood material more and conserves fresh wood and reduces the build-up of fresh fillers.

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Claims (1)

Sposob spracovania zberového papiera rozvláknením, odscparovaním nečistot s následnou frakcionáciou na krátko- a dlhovláknitý podíel, vyznačující sa tým, že sa 10 až 100 % odsepanovaného odpadu, tvořeného zmesou krátkých vlákien- a plnidiel, po prípadnom zahuštění, přidá k dlhovláknítej frakci! tej istej, alebo inej látkovej suspenzie, pričom dlhovláknitá frakcia .sa· před zmišaním zahustí .a· podrobí fibrilačnému mletiu.Process for recovering waste paper by pulping, separating impurities followed by fractionation into a short- and long-fiber fraction, characterized in that 10-100% of the separated short-fiber-filler waste, after concentration, if appropriate, is added to the long-fiber fraction! of the same or other fabric suspension, wherein the long fiber fraction is thickened prior to mixing and subjected to fibrillation milling.
CS788056A 1978-12-06 1978-12-06 Method of treating the waste paper CS220858B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CS788056A CS220858B1 (en) 1978-12-06 1978-12-06 Method of treating the waste paper
NL7904845A NL7904845A (en) 1978-12-06 1979-06-21 METHOD FOR TREATING WASTE PAPER IN THE PAPER INDUSTRY.
DE19792926185 DE2926185A1 (en) 1978-12-06 1979-06-28 METHOD FOR RECYCLING WASTE RESULTING FROM THE FRACTIONATION OF WASTE PAPER
IT2396479A IT1125398B (en) 1978-12-06 1979-06-28 METHOD FOR THE USE OF WASTE WHICH ORIGINATE FROM THE FRACTIONATION OF WASTE PAPER IN THE MANUFACTURE OF PAPER
DD79214822A DD145293A1 (en) 1978-12-06 1979-08-06 METHOD OF REPRODUCING PAPER
GB7927549A GB2037340A (en) 1978-12-06 1979-08-07 Utilizing waste paper
ES483485A ES483485A1 (en) 1978-12-06 1979-08-20 METHOD OF USING THE WASTE THAT IS ORIGINATED BY FRACTIONATION OF THE RECOVERY PAPER
FR7925509A FR2443528A1 (en) 1978-12-06 1979-10-12 METHOD OF USING WASTE FROM THE FRACTIONATION OF PAPER WASTE IN THE MANUFACTURE OF PAPER
JP15645479A JPS5580588A (en) 1978-12-06 1979-12-04 Utilization of waste generated by used paper milling in paper making industry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS788056A CS220858B1 (en) 1978-12-06 1978-12-06 Method of treating the waste paper

Publications (1)

Publication Number Publication Date
CS220858B1 true CS220858B1 (en) 1983-04-29

Family

ID=5430642

Family Applications (1)

Application Number Title Priority Date Filing Date
CS788056A CS220858B1 (en) 1978-12-06 1978-12-06 Method of treating the waste paper

Country Status (9)

Country Link
JP (1) JPS5580588A (en)
CS (1) CS220858B1 (en)
DD (1) DD145293A1 (en)
DE (1) DE2926185A1 (en)
ES (1) ES483485A1 (en)
FR (1) FR2443528A1 (en)
GB (1) GB2037340A (en)
IT (1) IT1125398B (en)
NL (1) NL7904845A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3536337C1 (en) * 1985-10-11 1987-05-27 Voith Gmbh J M Process and device for stock preparation for ash-containing raw material in waste paper processing
EP0582042A1 (en) * 1992-07-23 1994-02-09 J.M. Voith GmbH Process for modifying the properties of deinked waste paper pulps, especially the fiber classification and installation for carrying out the process
DE102020102731A1 (en) * 2020-02-04 2021-08-05 Voith Patent Gmbh Process for the production of a liner paper web

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331455A (en) * 1937-06-09 1943-10-12 Cowles Co Process for the preparation of paper stock
SE7613057L (en) * 1976-03-17 1977-09-18 Black Clawson Co SETS AND APPARATUS FOR RECYCLING PAPER FIBERS FROM WASTE MATERIAL CONTAINING PAPER
DE2759113C2 (en) * 1977-12-30 1979-05-17 J.M. Voith Gmbh, 7920 Heidenheim Process and system for processing waste paper
DE2836186C2 (en) * 1978-08-18 1980-02-07 J.M. Voith Gmbh, 7920 Heidenheim Process and device for ash removal from pulp suspensions in waste paper processing
US4676910A (en) * 1986-08-11 1987-06-30 Nalco Chemical Company Means of controlling precipitation of Na2 SO4 from solutions of NaHSO3 oxygen scavengers

Also Published As

Publication number Publication date
IT1125398B (en) 1986-05-14
ES483485A1 (en) 1980-03-01
FR2443528A1 (en) 1980-07-04
DE2926185A1 (en) 1980-06-26
DD145293A1 (en) 1980-12-03
JPS5580588A (en) 1980-06-17
IT7923964A0 (en) 1979-06-28
GB2037340A (en) 1980-07-09
NL7904845A (en) 1980-06-10

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