GB2009274A - Washing Fibre Stock - Google Patents

Washing Fibre Stock

Info

Publication number
GB2009274A
GB2009274A GB7838550A GB7838550A GB2009274A GB 2009274 A GB2009274 A GB 2009274A GB 7838550 A GB7838550 A GB 7838550A GB 7838550 A GB7838550 A GB 7838550A GB 2009274 A GB2009274 A GB 2009274A
Authority
GB
United Kingdom
Prior art keywords
stock
passage
screen
stirring member
washing
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
GB7838550A
Other versions
GB2009274B (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.)
Reed International Ltd
Original Assignee
Reed International Ltd
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 Reed International Ltd filed Critical Reed International Ltd
Priority to GB7838550A priority Critical patent/GB2009274B/en
Publication of GB2009274A publication Critical patent/GB2009274A/en
Application granted granted Critical
Publication of GB2009274B publication Critical patent/GB2009274B/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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
    • 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

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

Grey stock is passed along a passage (12) from a stock inlet (13) to an outlet (14) for cleaned stock. The passage is defined by a filter screen (3), preferably of wire gauze. Within the passage is disposed a stirring member (4). Washing liquid such as water is introduced into the passage (12), preferably by means of apertures (6) in a central portion (5) of the stirring member (4). Effluent liquid passes through the screen (3), for extraction e.g. through outlet (22). To enable the washing of stock of high consistency e.g. up to 7%, whilst avoiding clogging of the screen (3), the arrangement is such that relative rotation of the screen (3) and member (4) results in clusters of stock fibres, which move around the passage (12) as they pass therealong. The stirring member (4) preferably includes a plurality of longitudinally-extending axis-parallel bars (15) radially spaced from the central portion (5). <IMAGE>
GB7838550A 1977-09-28 1978-09-28 Process and apparatus for washing fibre stock in the de-inking of paper Expired GB2009274B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7838550A GB2009274B (en) 1977-09-28 1978-09-28 Process and apparatus for washing fibre stock in the de-inking of paper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB181179 1977-09-28
GB7838550A GB2009274B (en) 1977-09-28 1978-09-28 Process and apparatus for washing fibre stock in the de-inking of paper

Publications (2)

Publication Number Publication Date
GB2009274A true GB2009274A (en) 1979-06-13
GB2009274B GB2009274B (en) 1982-11-24

Family

ID=26237001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7838550A Expired GB2009274B (en) 1977-09-28 1978-09-28 Process and apparatus for washing fibre stock in the de-inking of paper

Country Status (1)

Country Link
GB (1) GB2009274B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274690A1 (en) * 1986-12-17 1988-07-20 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
EP0298499A1 (en) * 1987-07-08 1989-01-11 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
US5156750A (en) * 1987-07-08 1992-10-20 A. Ahlstrom Corporation Method and apparatus for thickening a fiber suspension and removing fine particles therefrom
US5538632A (en) * 1993-10-28 1996-07-23 Beloit Technologies, Inc. Multiple filter dynamic washer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274690A1 (en) * 1986-12-17 1988-07-20 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
US4904395A (en) * 1986-12-17 1990-02-27 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
EP0298499A1 (en) * 1987-07-08 1989-01-11 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
US4975204A (en) * 1987-07-08 1990-12-04 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
US5156750A (en) * 1987-07-08 1992-10-20 A. Ahlstrom Corporation Method and apparatus for thickening a fiber suspension and removing fine particles therefrom
US5538632A (en) * 1993-10-28 1996-07-23 Beloit Technologies, Inc. Multiple filter dynamic washer

Also Published As

Publication number Publication date
GB2009274B (en) 1982-11-24

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee