ES487817A1 - Processing waste paper - Google Patents

Processing waste paper

Info

Publication number
ES487817A1
ES487817A1 ES487817A ES487817A ES487817A1 ES 487817 A1 ES487817 A1 ES 487817A1 ES 487817 A ES487817 A ES 487817A ES 487817 A ES487817 A ES 487817A ES 487817 A1 ES487817 A1 ES 487817A1
Authority
ES
Spain
Prior art keywords
stage
waste paper
processing waste
hydrogen peroxide
sodium hyposulphite
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
ES487817A
Other languages
Spanish (es)
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 ES487817A1 publication Critical patent/ES487817A1/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
    • 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

  • Paper (AREA)

Abstract

In the processing of waste paper containing a high proportion of dyed and/or wood-containing papers, the usual steps of disintegration, dye particle separation and flotation are followed by a multi-stage bleaching process. The first stage uses a hypochlorite bleach, whilst the second employs sodium hyposulphite or hydrogen peroxide. Preferably, the second stage employs sodium hyposulphite and a third stage hydrogen peroxide.
ES487817A 1979-01-19 1980-01-18 Processing waste paper Expired ES487817A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2901942A DE2901942B1 (en) 1979-01-19 1979-01-19 Process for recycling waste paper

Publications (1)

Publication Number Publication Date
ES487817A1 true ES487817A1 (en) 1980-06-16

Family

ID=6060894

Family Applications (1)

Application Number Title Priority Date Filing Date
ES487817A Expired ES487817A1 (en) 1979-01-19 1980-01-18 Processing waste paper

Country Status (9)

Country Link
JP (1) JPS5598990A (en)
BE (1) BE881179A (en)
BR (1) BR5901789U (en)
DE (1) DE2901942B1 (en)
ES (1) ES487817A1 (en)
FR (1) FR2446886A1 (en)
GB (1) GB2040333A (en)
IT (1) IT7969513A0 (en)
NL (1) NL8000316A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522030A1 (en) * 1982-02-19 1983-08-26 Scherb Metenett Papeteries PROCESS FOR SELECTIVELY WHITENING PAPER PULP AND PAPER OBTAINED BY CARRYING OUT SAID METHOD
DE3510214A1 (en) * 1985-03-21 1986-09-25 J.M. Voith Gmbh, 7920 Heidenheim METHOD FOR PROCESSING WASTE PAPER
JPS6297993A (en) * 1985-10-21 1987-05-07 株式会社　フジモトポルコン Erasion of fluorescent reaction in old paper
DE3610940A1 (en) * 1986-03-04 1987-09-10 Escher Wyss Gmbh HIGH TEMPERATURE HIGH CONSISTENCY FAST WHITE
JPH03294589A (en) * 1990-04-09 1991-12-25 Sanyo Kokusaku Pulp Co Ltd Treatment of unclassified waste information-recording paper
JPH0491284A (en) * 1990-08-03 1992-03-24 Honshu Paper Co Ltd Method for eliminating fluorescent reaction in waste paper
AT400155B (en) * 1991-04-29 1995-10-25 Chemiefaser Lenzing Ag Process for chlorineless decolorization of pulp-dyed papers and carbonless copy papers
US6001218A (en) 1994-06-29 1999-12-14 Kimberly-Clark Worldwide, Inc. Production of soft paper products from old newspaper
US6074527A (en) 1994-06-29 2000-06-13 Kimberly-Clark Worldwide, Inc. Production of soft paper products from coarse cellulosic fibers
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
JP4922495B2 (en) * 2001-03-13 2012-04-25 光洋サーモシステム株式会社 Transport device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS506802A (en) * 1973-05-30 1975-01-24
JPS52148203A (en) * 1976-06-01 1977-12-09 Kogyo Gijutsuin Process for bleaching pulp
DE2816148B1 (en) * 1978-04-14 1978-10-12 Voith Gmbh J M Procedures for recycling paper

Also Published As

Publication number Publication date
BE881179A (en) 1980-05-16
JPS5598990A (en) 1980-07-28
DE2901942B1 (en) 1979-08-16
IT7969513A0 (en) 1979-12-31
FR2446886A1 (en) 1980-08-14
GB2040333A (en) 1980-08-28
NL8000316A (en) 1980-07-22
BR5901789U (en) 1980-09-02

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