GB1391112A - De-inking of printed wastepaper - Google Patents

De-inking of printed wastepaper

Info

Publication number
GB1391112A
GB1391112A GB3671174A GB3671174A GB1391112A GB 1391112 A GB1391112 A GB 1391112A GB 3671174 A GB3671174 A GB 3671174A GB 3671174 A GB3671174 A GB 3671174A GB 1391112 A GB1391112 A GB 1391112A
Authority
GB
United Kingdom
Prior art keywords
separator
tank
fed
overflow
ink
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
GB3671174A
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.)
Vyskumny ustav papieru a celulozy
Original Assignee
Vyskumny ustav papieru a celulozy
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 Vyskumny ustav papieru a celulozy filed Critical Vyskumny ustav papieru a celulozy
Publication of GB1391112A publication Critical patent/GB1391112A/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
    • D21C5/027—Chemicals therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D9/00—Chemical paint or ink removers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

1391112 Centrifugers VYSKUMNY USTAV PAPIERU A CELULOZY 10 March 1972 [11 March 1971] 36711/74 Divided out of 1391111 Heading B2H [Also in Division D2] Apparatus for separating paper from a mixture thereof with an ink-carrying carrier comprises a series of conical vortex separators 10, 13, 16 of which units downstream of each other are of progressively smaller maximum diameter and progressively shorter, the separators being so connected that the overflow from separator 10 is fed to separator 13, and the underflows from separators 10, 13 are fed to separator 16. In use, a mixture comprising waste paper pulp and ink-carrying particles formed in pulper 1 is fed via storage tank 3 and pump 4 to a separator 5 for separation of heavy contaminants, and to a strainer 6 where any residue which has not been repulped is separated out. The stock is then diluted in tank 8 and fed by pump 9 to separator 10 which separates out the coarsest portion of ink-carrying particles, the latter being passed to tank 14. The overflow of purified stock is fed via tank 11 and pump 12 to separator 13 for separation of the remaining ink-carrying particles, the latter also being passed to tank 14. The material collected in tank 14 is then fed to separator 16, the resulting overflow being returned to dilution tank 8 and the underflow being collected in tank 17. The overflow from separator 13 is passed to a separator 21 for removal of the finest contaminants from the stock. Separator 21 comprises a cylindrical vessel 23 provided with tangentially arranged inlet 22 and outlet 24 for vortex flow, axially disposed outlet 25 for withdrawing the finest contaminants, and an inlet 26 through which a gaseous medium or a water/gas dispersion may be introduced into the separator. A perforated screen 27 may be located above inlet 26 to distribute the medium or dispersion uniformly. (For Figure see next page)
GB3671174A 1971-03-11 1972-03-10 De-inking of printed wastepaper Expired GB1391112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS180471A CS173696B1 (en) 1971-03-11 1971-03-11

Publications (1)

Publication Number Publication Date
GB1391112A true GB1391112A (en) 1975-04-16

Family

ID=5353340

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3671174A Expired GB1391112A (en) 1971-03-11 1972-03-10 De-inking of printed wastepaper
GB1123472A Expired GB1391111A (en) 1971-03-11 1972-03-10 De-inking of printed wastepaper

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1123472A Expired GB1391111A (en) 1971-03-11 1972-03-10 De-inking of printed wastepaper

Country Status (9)

Country Link
JP (1) JPS5650037B1 (en)
AT (1) AT320428B (en)
CS (1) CS173696B1 (en)
DD (1) DD96281A1 (en)
FI (1) FI53725C (en)
FR (1) FR2129617A5 (en)
GB (2) GB1391112A (en)
IT (1) IT952957B (en)
NL (1) NL169910C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756711C2 (en) * 1977-12-20 1979-02-15 J.M. Voith Gmbh, 7920 Heidenheim Process for deinking printed waste paper
AU2003260511A1 (en) * 2003-08-04 2005-03-07 Talleres Galarza, S.L. System, machine, installation and elements for the production of cellulose cases

Also Published As

Publication number Publication date
AT320428B (en) 1975-02-10
DE2211079A1 (en) 1972-09-14
NL7203171A (en) 1972-09-13
NL169910C (en) 1982-09-01
FI53725C (en) 1978-07-10
DE2211079B2 (en) 1977-01-27
GB1391111A (en) 1975-04-16
FI53725B (en) 1978-03-31
IT952957B (en) 1973-07-30
CS173696B1 (en) 1977-03-31
JPS5650037B1 (en) 1981-11-26
FR2129617A5 (en) 1972-10-27
DD96281A1 (en) 1973-03-12
NL169910B (en) 1982-04-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee