CA1276408C - Pressurised pulp chlorination and chlorine introduction in minute bubbles - Google Patents

Pressurised pulp chlorination and chlorine introduction in minute bubbles

Info

Publication number
CA1276408C
CA1276408C CA000493830A CA493830A CA1276408C CA 1276408 C CA1276408 C CA 1276408C CA 000493830 A CA000493830 A CA 000493830A CA 493830 A CA493830 A CA 493830A CA 1276408 C CA1276408 C CA 1276408C
Authority
CA
Canada
Prior art keywords
mixer
slurry
chlorine gas
chlorine
recited
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 - Lifetime
Application number
CA000493830A
Other languages
English (en)
French (fr)
Inventor
Gordon Rowlandson
Michael I. Sherman
Joseph R. Phillips
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.)
Andritz Inc
Original Assignee
Andritz Ahlstrom Inc
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 Andritz Ahlstrom Inc filed Critical Andritz Ahlstrom Inc
Application granted granted Critical
Publication of CA1276408C publication Critical patent/CA1276408C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Treating Waste Gases (AREA)
  • Treatment Of Sludge (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • External Artificial Organs (AREA)
  • Materials For Medical Uses (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA000493830A 1985-06-14 1985-10-25 Pressurised pulp chlorination and chlorine introduction in minute bubbles Expired - Lifetime CA1276408C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74467885A 1985-06-14 1985-06-14
US744,678 1985-06-14

Publications (1)

Publication Number Publication Date
CA1276408C true CA1276408C (en) 1990-11-20

Family

ID=24993592

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000493830A Expired - Lifetime CA1276408C (en) 1985-06-14 1985-10-25 Pressurised pulp chlorination and chlorine introduction in minute bubbles

Country Status (9)

Country Link
EP (1) EP0207062B1 (de)
JP (1) JPS61289192A (de)
AT (1) ATE48452T1 (de)
BR (1) BR8602738A (de)
CA (1) CA1276408C (de)
DE (1) DE3667310D1 (de)
FI (1) FI85728C (de)
NO (1) NO168123C (de)
SE (1) SE466459B (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US56833A (en) * 1866-07-31 Improvement in bleaching paper-stock
US1971241A (en) * 1933-04-01 1934-08-21 Pennsylvania Salt Mfg Co Method of chlorination
DE1621684A1 (de) * 1967-10-04 1971-07-08 Bellmer Geb Kg Maschf Maschinenkombination fuer die Leitungsstrecke in Zellstoffaufbereitungsanlagen
SE387671B (sv) * 1973-04-27 1976-09-13 Mo Och Domsjoe Ab Anordning for blekning av kompakt, icke fluffat vetskehaltigt lignocellulosamaterial med gasformiga blekmedel, foretredesvis syrgas

Also Published As

Publication number Publication date
EP0207062A1 (de) 1986-12-30
ATE48452T1 (de) 1989-12-15
SE8602592L (sv) 1986-12-15
SE466459B (sv) 1992-02-17
NO168123C (no) 1992-01-15
SE8602592D0 (sv) 1986-06-10
EP0207062B1 (de) 1989-12-06
FI862082A0 (fi) 1986-05-19
FI85728C (fi) 1992-05-25
BR8602738A (pt) 1987-02-10
FI862082L (fi) 1986-12-15
JPS61289192A (ja) 1986-12-19
DE3667310D1 (de) 1990-01-11
FI85728B (fi) 1992-02-14
NO168123B (no) 1991-10-07
NO862116L (no) 1986-12-15

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Legal Events

Date Code Title Description
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