DE625376C - Process for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper - Google Patents

Process for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper

Info

Publication number
DE625376C
DE625376C DEL85094D DEL0085094D DE625376C DE 625376 C DE625376 C DE 625376C DE L85094 D DEL85094 D DE L85094D DE L0085094 D DEL0085094 D DE L0085094D DE 625376 C DE625376 C DE 625376C
Authority
DE
Germany
Prior art keywords
sifting
cleaning
plant fiber
opening
waste paper
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
Application number
DEL85094D
Other languages
German (de)
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.)
HUGO RUMPE
Original Assignee
HUGO RUMPE
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
Priority to DEL79735D priority Critical patent/DE617684C/en
Application filed by HUGO RUMPE filed Critical HUGO RUMPE
Priority to DEL85094D priority patent/DE625376C/en
Application granted granted Critical
Publication of DE625376C publication Critical patent/DE625376C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/022—Chemicals therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • 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
    • Y02W30/64—Paper recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Description

Verfahren zum Sichten, -Reinigen und Aufschließen von Pflanzenfaserabfällen, insbesondere zum Aufbereiten'von Altpapier Das Hauptpatent betrifft nach dem Hauptanspruch ein Verfahren zum Sichten, Reinigen und Aufschließen von Pflanzenfaserabfällen, insbesondere zum Aufbereiten von Altpapier mit endlosem, umlaufendem Siebband und über diesem angeordneten Druckwasserdüsen, das sich dadurch kennzeichnet, daß der Stoff auf zwei oder mehreren endlosen, umlaufenden über- oder hintereinander angeordneten Siebbändern -von mindestens aoo bis 5öoo und mehr Maschen --pro qcm einem Druckwasserstrahl. von mindestens q. atü ausgesetzt wird, so daß die Fasern auf dem Siebe aufgeschlossen und die Verunreinigungen und kurzen Fasern nach dem Abscheiden durch das Sieb hindurchgedrückt werden.Process for the sifting, cleaning and digestion of plant fiber waste, in particular for the preparation of waste paper The main patent relates to the main claim a process for sifting, cleaning and digesting plant fiber waste, especially for processing waste paper with an endless, revolving sieve belt and above this arranged pressurized water nozzles, which is characterized in that the Fabric on two or more endless, circumferential layers arranged one above the other or one behind the other Sieve belts - of at least aoo to 5ooo and more meshes - per square cm of a pressurized water jet. of at least q. atü is exposed so that the fibers on the sieve are digested and pushing the contaminants and short fibers through the screen after separation will.

Die vorliegende Erfindung betrifft eine Verbesserung des Verfahrens nach dem Hauptpatent. Es hat sich nämlich ,gezeigt, daß die mechanische Siebung der faserhaltigen Ausgangsstoffe, insbesondere des Altpapiers, wirtschaftlich einen noch günstigeren Wirkungsgrad ergibt, wenn ihr eine chemische Auflockerung durch kalte oder warme Behandlung mit Kalkwasser .oder Kalkmilch, beispielsweise von: i bis z%, vorausgeht. Diese Behandlung kann bei Zimmertemperatur oder bei höheren Temperaturen von z. B. 40 bis 6o° C in einem heizbaren Holländer unter Vermeidung- einer MaMung stattfinden. Der Ausgangsstoff erhält durch diese Vorbehandlung diejenige Beschaffenheit, die für die durch Anwendung von Druckwasserstrahlen bezweckte Siebung am geeignetsten ist.The present invention relates to an improvement in the method according to the main patent. It has been shown that mechanical sieving the fibrous raw materials, especially the waste paper, economically one Even better efficiency results if you do a chemical loosening cold or warm treatment with lime water or lime milk, for example of: i to z%, precedes. This treatment can be done at room temperature or at higher Temperatures of e.g. B. 40 to 60 ° C in a heatable Dutch oven while avoiding take place in a measurement. This pretreatment gives the starting material the one Characteristics that are intended for sieving using pressurized water jets is most suitable.

Es ist zwar bereits bekannt, Altpapier zwecks Entfernung der Druckersclhwärze in einem Holländer bei gewöhnlicher oder erhöhter Temperatur unter Verwendung von Kalkwasser oder 'Kalkmilch zu zerfasern und die, an der- Oberfläche der Stoffaufschwemmung sich- ansammelnden Verunreinigungen durch eine Waschtrommel abzuschöpfen. Ein neinweißer Papierstoff kann jedoch nach diesem bekannten- Verfahren nicht erzielt werden, vielmehr bedarf es hierzu noch eines weiteren Arbeitsvorganges, nämlich der eingangs erwähnten mechanischen Siebung auf mehreren endlosen, umlaufenden Siebbändern und über diesen angeordneten Druckwasserdüsen nach Patent 617 68q..It is already known to shred waste paper for the purpose of removing the printer's heat in a dutchman at normal or elevated temperature using lime water or milk of lime and to skim off the impurities that collect on the surface of the stock suspension with a washing drum. A non-white paper stock cannot, however, be achieved by this known method; rather, a further process is required for this, namely the mechanical sieving mentioned at the beginning on several endless, circulating sieve belts and pressure water nozzles arranged above them according to patent 617 68q ..

Claims (1)

" PATENTANSPRUCH: Verfahren zum Sichten, Reinigen und Aufschließen von Pflanzenfasierabfällen, insbesondere zum Aufbereiten von Altpapier nach Patent 617 68q., dadurch gekennzeichnet; daß der mechanischen Siebung eine chemische Auflockerung des Ausgangsstoffes durch kalte oder warme Behandlung mit Kalkwasser oder Kalkmilch vorangeht."PATENT CLAIM: Process for sifting, cleaning and breaking down vegetable fiber waste, in particular for processing waste paper according to patent 617 68q., Characterized in that the mechanical sieving is preceded by a chemical loosening of the raw material by cold or warm treatment with lime water or lime milk.
DEL85094D 1931-11-06 1932-08-05 Process for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper Expired DE625376C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEL79735D DE617684C (en) 1931-11-06 1931-11-06 Method and device for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper
DEL85094D DE625376C (en) 1931-11-06 1932-08-05 Process for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL79735D DE617684C (en) 1931-11-06 1931-11-06 Method and device for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper
DEL85094D DE625376C (en) 1931-11-06 1932-08-05 Process for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper

Publications (1)

Publication Number Publication Date
DE625376C true DE625376C (en) 1936-02-08

Family

ID=32963359

Family Applications (2)

Application Number Title Priority Date Filing Date
DEL79735D Expired DE617684C (en) 1931-11-06 1931-11-06 Method and device for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper
DEL85094D Expired DE625376C (en) 1931-11-06 1932-08-05 Process for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEL79735D Expired DE617684C (en) 1931-11-06 1931-11-06 Method and device for sifting, cleaning and opening up plant fiber waste, in particular for processing waste paper

Country Status (1)

Country Link
DE (2) DE617684C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749289C (en) * 1938-08-13 1944-11-21 Josef Breitkopf Dipl Ing Process for processing printed or written waste paper
DE877694C (en) * 1951-03-07 1953-05-26 Alkor Werk Karl Lissmann K G Method and device for dissolving fibrous materials u. like in liquid
DE1106592B (en) * 1958-12-17 1961-05-10 Friedrich Karl Sauer Process for the regeneration of tar and / or bituminous paper waste or waste paper
DE1215499B (en) * 1961-07-14 1966-04-28 Defibrator Ab Method and device for cleaning wood chips which are intended for the production of cellulose or the like
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

Also Published As

Publication number Publication date
DE617684C (en) 1935-08-23

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