CA2203676A1 - Procedes de reduction en pate et de desencrage - Google Patents

Procedes de reduction en pate et de desencrage

Info

Publication number
CA2203676A1
CA2203676A1 CA 2203676 CA2203676A CA2203676A1 CA 2203676 A1 CA2203676 A1 CA 2203676A1 CA 2203676 CA2203676 CA 2203676 CA 2203676 A CA2203676 A CA 2203676A CA 2203676 A1 CA2203676 A1 CA 2203676A1
Authority
CA
Canada
Prior art keywords
waste paper
pulping
dispersing
solids
solids content
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.)
Abandoned
Application number
CA 2203676
Other languages
English (en)
Inventor
Don L. Scott
William J. Fondow
Albert F. Kelly
David C. Grantz
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.)
Black Clawson Co
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2203676A1 publication Critical patent/CA2203676A1/fr
Abandoned legal-status Critical Current

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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers
    • 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/342—Mixing apparatus
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un procédé de recyclage des vieux papiers de bureau tels que ceux qui ont été imprimés à l'encre ou au laser. Le vieux papier subit simultanément une réduction en pulpe et une dispersion des particules d'encre au cours d'une opération de malaxage (2) du papier donnant une boue ou un mélange aqueux à teneur élevée en solides. Après l'opération simultanée de réduction en pâte et de dispersion, il n'y a plus besoin d'opération de dispersion complémentaire pour fabriquer du papier désencré. La boue de mélange aqueux à teneur élevée en solides est diluée et acheminée vers des dispositifs de séparation de désencrage humide tels qu'une unité de flottation par écumage (12) ou similaire. La pâte ainsi traitée subit un lavage (18) puis vient former une pâte liquide de haute qualité (20) prête à subir les opérations de blanchiment et/ou de fabrication du papier.
CA 2203676 1994-11-21 1995-11-20 Procedes de reduction en pate et de desencrage Abandoned CA2203676A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34285294A 1994-11-21 1994-11-21
US08/342,852 1994-11-21

Publications (1)

Publication Number Publication Date
CA2203676A1 true CA2203676A1 (fr) 1996-05-30

Family

ID=23343549

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2203676 Abandoned CA2203676A1 (fr) 1994-11-21 1995-11-20 Procedes de reduction en pate et de desencrage

Country Status (5)

Country Link
EP (1) EP0793747A4 (fr)
JP (1) JP2001500572A (fr)
BR (1) BR9509797A (fr)
CA (1) CA2203676A1 (fr)
WO (1) WO1996016222A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0931872B1 (fr) 1998-01-23 2003-04-09 Voith Paper Patent GmbH Procédé pour l'enlèvement d'impurités fines d'une suspension de fibres
KR100288123B1 (ko) * 1998-06-27 2001-05-02 김충섭 부상부유 및 니딩 처리를 이용한 골판지 고지의 재생방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE380845B (sv) * 1973-03-19 1975-11-17 Mo Sett att framstella pappersmassa av avfallspapper
CH654360A5 (de) * 1981-12-10 1986-02-14 Escher Wyss Gmbh Verfahren zur aufloesung von altpapier im dickstoffbereich.
DE3439098A1 (de) * 1984-08-30 1986-03-13 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Verfahren und anordnung zur papierstoffaufbereitung
US5302245A (en) * 1991-04-02 1994-04-12 Vps Technology Partnership Integrated wastepaper treatment process

Also Published As

Publication number Publication date
EP0793747A1 (fr) 1997-09-10
JP2001500572A (ja) 2001-01-16
WO1996016222A1 (fr) 1996-05-30
BR9509797A (pt) 1997-09-30
EP0793747A4 (fr) 1999-05-26

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Legal Events

Date Code Title Description
FZDE Dead