GB2017780A - Recovering waste paper - Google Patents

Recovering waste paper

Info

Publication number
GB2017780A
GB2017780A GB7906504A GB7906504A GB2017780A GB 2017780 A GB2017780 A GB 2017780A GB 7906504 A GB7906504 A GB 7906504A GB 7906504 A GB7906504 A GB 7906504A GB 2017780 A GB2017780 A GB 2017780A
Authority
GB
United Kingdom
Prior art keywords
flotation
appliance
waste paper
pulper
treatment
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
GB7906504A
Other versions
GB2017780B (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 GB2017780A publication Critical patent/GB2017780A/en
Application granted granted Critical
Publication of GB2017780B publication Critical patent/GB2017780B/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
    • D21C5/025—De-inking
    • 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
    • D21B1/32—Defibrating by other means of waste paper
    • D21B1/325—Defibrating by other means of waste paper de-inking devices
    • 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

Abstract

Waste paper is recovered by coarse pulping in a pulper, preliminary sorting, thickening to stock densities of more than 10%, treatment in a reaction tower in the presence of de-inking chemicals followed by thinning of the suspension and flotation in a flotation appliance. The invention is characterised in that at least some of the de-inking chemicals are introduced in the pulper, and in that the water laden with particles of printing ink which is yielded during the thickening process before the reaction tower is subjected to flotation in a subsidiary circuit flotation appliance clean water obtained from this appliance being reintroduced into the process. As a further development, the froth arising from the flotation appliance is introduced into the subsidiary circuit flotation appliance for after-treatment.
GB7906504A 1978-03-29 1979-02-23 Recovering waste paper Expired GB2017780B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2813448A DE2813448B1 (en) 1978-03-29 1978-03-29 Process and plant for recycling waste paper

Publications (2)

Publication Number Publication Date
GB2017780A true GB2017780A (en) 1979-10-10
GB2017780B GB2017780B (en) 1982-09-02

Family

ID=6035634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906504A Expired GB2017780B (en) 1978-03-29 1979-02-23 Recovering waste paper

Country Status (12)

Country Link
JP (1) JPS55132789A (en)
AT (1) AT364907B (en)
BE (1) BE875157A (en)
CH (1) CH636148A5 (en)
DE (1) DE2813448B1 (en)
ES (1) ES478106A1 (en)
FI (1) FI791020A (en)
FR (1) FR2421241A1 (en)
GB (1) GB2017780B (en)
IT (1) IT1121453B (en)
NL (1) NL7902142A (en)
SE (1) SE7902349L (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177129A (en) * 1985-06-22 1987-01-14 Voith Gmbh J M Method and apparatus for treating waste paper
US4865690A (en) * 1987-03-13 1989-09-12 Centre Technique De L'industrie Des Papiers, Cartons Et Cellulose Process and plant for recycling waste printed papers
USRE36424E (en) * 1982-04-19 1999-12-07 Clement; Jean-Marie Method for producing pulp from printed unselected waste paper
US7537674B1 (en) 2006-06-12 2009-05-26 Narayanasamy Seenivasan Closed floatation de-inking module for recycled paper
US7544271B1 (en) 2006-06-12 2009-06-09 Narayanasamy Seenivasan Open flotation de-inking module for recycled paper
US7562777B1 (en) 2006-06-12 2009-07-21 Narayanasamy Seenivasan Flotation cell injector assembly for use with open or closed flotation deinking modules for recycled paper

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904326C3 (en) * 1979-02-05 1982-05-13 Naamloze Vennootschap Papierfabriek Gennep, Gennep Process and device for deinking pulp suspensions
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
GB2112830A (en) * 1981-12-09 1983-07-27 Steinbeis Papier Gmbh Upgrading used paper
AT374839B (en) * 1982-12-23 1984-06-12 Andritz Ag Maschf METHOD FOR PRODUCING FIBER FIBER FROM PAPER WASTE WITH A HIGH LEVEL OF POLLUTION
DE3305131A1 (en) * 1983-02-15 1984-08-16 Degussa Ag, 6000 Frankfurt METHOD FOR REMOVING WASTE PAPER
CH665859A5 (en) * 1984-12-19 1988-06-15 Escher Wyss Gmbh METHOD AND DEVICE FOR REMOVING IMPURITIES FROM WASTE PAPER.
DE3822454C1 (en) * 1988-07-02 1989-08-24 J.M. Voith Gmbh, 7920 Heidenheim, De
DE3831668A1 (en) * 1988-09-17 1990-03-22 Escher Wyss Gmbh METHOD FOR INCREASING WHITE GRADE OF WASTE PAPER WITH NEUTRAL WATER CIRCUIT
DE4130472C2 (en) * 1991-09-13 1995-05-11 Escher Wyss Gmbh Method and device for treating a fiber suspension
DE4206206C2 (en) * 1992-02-28 1993-11-25 Voith Gmbh J M Process for cleaning the rejects from deinking flotation
DE4223485A1 (en) * 1992-07-17 1994-01-20 Voith Gmbh J M Process for processing waste paper
DE4238336A1 (en) * 1992-11-13 1994-05-19 Voith Gmbh J M Used paper suspension cleaning process and appts. - has thickener or washer for sludge from flotation unit to be returned to the flotation stage
DE19938976A1 (en) * 1999-08-17 2001-03-01 Voith Sulzer Papiertech Patent Process for the preparation of a paper fiber raw material containing wood pulp
DE102006057861A1 (en) 2006-12-08 2008-06-12 Voith Patent Gmbh Method for treating a filtrate produced from a paper fiber suspension of waste paper comprises adding the filtrate partly to the paper fiber suspension at a site lying downstream of a thickening units from which the filtrate is produced
DE102008008762A1 (en) * 2008-02-12 2009-08-13 Voith Patent Gmbh Filtrate treating method for use during thickening of paper fiber suspension obtained from waste paper to produce graphical paper, involves adding partial flows to filtrates, where partial flows are produced from condensed substances
DE102011005650A1 (en) 2011-03-16 2012-09-20 Voith Patent Gmbh Method for controlling the filter performance of a filter device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322631A (en) * 1961-05-18 1963-03-29 Voith Gmbh J M Process for treating the foam formed during flotation of printed waste paper and containing printing ink and similar substances
JPS5220563B1 (en) * 1968-10-19 1977-06-04
DE2311674C3 (en) * 1973-03-09 1978-01-19 Degussa PROCESS FOR REGENERATING WASTE PAPER
DD130266B1 (en) * 1977-04-01 1982-11-24 Manhart Schlegel METHOD FOR INCREASING THE WHITE GRADE OF DEINKED AGING MATERIALS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36424E (en) * 1982-04-19 1999-12-07 Clement; Jean-Marie Method for producing pulp from printed unselected waste paper
GB2177129A (en) * 1985-06-22 1987-01-14 Voith Gmbh J M Method and apparatus for treating waste paper
US4865690A (en) * 1987-03-13 1989-09-12 Centre Technique De L'industrie Des Papiers, Cartons Et Cellulose Process and plant for recycling waste printed papers
US7537674B1 (en) 2006-06-12 2009-05-26 Narayanasamy Seenivasan Closed floatation de-inking module for recycled paper
US7544271B1 (en) 2006-06-12 2009-06-09 Narayanasamy Seenivasan Open flotation de-inking module for recycled paper
US7562777B1 (en) 2006-06-12 2009-07-21 Narayanasamy Seenivasan Flotation cell injector assembly for use with open or closed flotation deinking modules for recycled paper

Also Published As

Publication number Publication date
GB2017780B (en) 1982-09-02
FI791020A (en) 1979-09-30
ES478106A1 (en) 1979-05-16
CH636148A5 (en) 1983-05-13
IT1121453B (en) 1986-04-02
BE875157A (en) 1979-07-16
NL7902142A (en) 1979-10-02
DE2813448B1 (en) 1978-09-21
SE7902349L (en) 1979-09-30
ATA66479A (en) 1981-04-15
IT7967648A0 (en) 1979-03-28
AT364907B (en) 1981-11-25
JPS55132789A (en) 1980-10-15
FR2421241A1 (en) 1979-10-26

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Legal Events

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