GB2014209A - Reprocessing Paper - Google Patents

Reprocessing Paper

Info

Publication number
GB2014209A
GB2014209A GB7901663A GB7901663A GB2014209A GB 2014209 A GB2014209 A GB 2014209A GB 7901663 A GB7901663 A GB 7901663A GB 7901663 A GB7901663 A GB 7901663A GB 2014209 A GB2014209 A GB 2014209A
Authority
GB
United Kingdom
Prior art keywords
paper
digested
waste paper
digester
diluted
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.)
Granted
Application number
GB7901663A
Other versions
GB2014209B (en
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of GB2014209A publication Critical patent/GB2014209A/en
Application granted granted Critical
Publication of GB2014209B publication Critical patent/GB2014209B/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
    • 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
    • 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

The invention concerns processing of high grade waste paper especially for printed waste paper containing wood and wet strength agents. In order to provide satisfactory digestion of such paper, it is digested under pressure in a digester at a temperature above 100 DEG C (preferably 110 to 140 DEG C) and at a density range from 20 to 50% under acid and/or alkaline conditions. The digested paper is then diluted and mixed with flotation chemicals. This may be followed by a two stage flotation process.
GB7901663A 1978-02-09 1979-01-17 Reprocessing paper Expired GB2014209B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2805445A DE2805445C2 (en) 1978-02-09 1978-02-09 Process for recycling high quality waste paper

Publications (2)

Publication Number Publication Date
GB2014209A true GB2014209A (en) 1979-08-22
GB2014209B GB2014209B (en) 1983-01-12

Family

ID=6031530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7901663A Expired GB2014209B (en) 1978-02-09 1979-01-17 Reprocessing paper

Country Status (8)

Country Link
AT (1) AT367116B (en)
DE (1) DE2805445C2 (en)
ES (1) ES477183A1 (en)
FI (1) FI68094C (en)
FR (1) FR2416975A1 (en)
GB (1) GB2014209B (en)
IT (1) IT1110272B (en)
SE (1) SE447493B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947862C2 (en) * 1979-11-28 1982-04-01 J.M. Voith Gmbh, 7920 Heidenheim Process and plant for the production of a pulp suspension from waste paper
DE3305131A1 (en) * 1983-02-15 1984-08-16 Degussa Ag, 6000 Frankfurt METHOD FOR REMOVING WASTE PAPER
US5211809A (en) * 1991-05-21 1993-05-18 Air Products And Chemicals, Inc,. Dye removal in oxygen color stripping of secondary fibers
SE501309C2 (en) * 1993-05-28 1995-01-09 Klippans Finpappersbruk Ab Pulp production by digestion of a mixture of cellulose-based recycled material and raw wood
US6074527A (en) 1994-06-29 2000-06-13 Kimberly-Clark Worldwide, Inc. Production of soft paper products from coarse cellulosic fibers
US6001218A (en) 1994-06-29 1999-12-14 Kimberly-Clark Worldwide, Inc. Production of soft paper products from old newspaper
US6296736B1 (en) 1997-10-30 2001-10-02 Kimberly-Clark Worldwide, Inc. Process for modifying pulp from recycled newspapers
US6387210B1 (en) 1998-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Method of making sanitary paper product from coarse fibers

Also Published As

Publication number Publication date
FR2416975B3 (en) 1981-12-11
DE2805445C2 (en) 1979-06-07
AT367116B (en) 1982-06-11
FR2416975A1 (en) 1979-09-07
FI68094C (en) 1985-07-10
SE447493B (en) 1986-11-17
IT7919954A0 (en) 1979-02-07
FI68094B (en) 1985-03-29
SE7901031L (en) 1979-08-10
ES477183A1 (en) 1979-07-16
IT1110272B (en) 1985-12-23
DE2805445B1 (en) 1978-09-28
ATA867778A (en) 1981-10-15
FI790414A (en) 1979-08-10
GB2014209B (en) 1983-01-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee