FI74497C - Foerfarande foer blandning av kemikalier med massa av ved och vid foerfarandet anvaend blandare. - Google Patents

Foerfarande foer blandning av kemikalier med massa av ved och vid foerfarandet anvaend blandare. Download PDF

Info

Publication number
FI74497C
FI74497C FI831474A FI831474A FI74497C FI 74497 C FI74497 C FI 74497C FI 831474 A FI831474 A FI 831474A FI 831474 A FI831474 A FI 831474A FI 74497 C FI74497 C FI 74497C
Authority
FI
Finland
Prior art keywords
pulp
oxygen
mixer
line
slurry
Prior art date
Application number
FI831474A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI831474A0 (fi
FI831474L (fi
FI74497B (fi
Inventor
Louis Otto Torregrossa
Howard Rand Battan
Joseph Maria Bentvelzen
Gerald Donovan Crosby
John Acroyd Fleck
Dennis Howard Justice
Michael Dean Meredith
Henry Bepple
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of FI831474A0 publication Critical patent/FI831474A0/fi
Publication of FI831474L publication Critical patent/FI831474L/fi
Application granted granted Critical
Publication of FI74497B publication Critical patent/FI74497B/fi
Publication of FI74497C publication Critical patent/FI74497C/fi

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Earth Drilling (AREA)
  • Shovels (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
FI831474A 1981-09-04 1983-04-29 Foerfarande foer blandning av kemikalier med massa av ved och vid foerfarandet anvaend blandare. FI74497C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1981/001187 WO1983000816A1 (en) 1981-09-04 1981-09-04 Method and apparatus for mixing pulp with oxygen
US8101187 1981-09-04

Publications (4)

Publication Number Publication Date
FI831474A0 FI831474A0 (fi) 1983-04-29
FI831474L FI831474L (fi) 1983-04-29
FI74497B FI74497B (fi) 1987-10-30
FI74497C true FI74497C (fi) 1988-02-08

Family

ID=22161409

Family Applications (1)

Application Number Title Priority Date Filing Date
FI831474A FI74497C (fi) 1981-09-04 1983-04-29 Foerfarande foer blandning av kemikalier med massa av ved och vid foerfarandet anvaend blandare.

Country Status (8)

Country Link
EP (1) EP0087412B1 (de)
JP (1) JPS58501328A (de)
AT (1) ATE31249T1 (de)
BR (1) BR8109040A (de)
DE (1) DE3176561D1 (de)
FI (1) FI74497C (de)
NO (1) NO831429L (de)
WO (1) WO1983000816A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89516B (fi) 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
US20170175329A1 (en) * 2015-12-17 2017-06-22 Nicole Rumore Methods for oxygen delignification and ozone bleaching of pulp
CN114326573B (zh) * 2021-12-24 2023-10-10 浙江华章科技有限公司 一种基于plc***的连续配浆方法及***
CN117684408B (zh) * 2024-02-02 2024-05-14 汶瑞机械(山东)有限公司 一种刮料器

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591070A (en) * 1925-02-27 1926-07-06 Robert B Wolf Bleaching apparatus
US1827710A (en) * 1928-07-28 1931-10-13 Leyst-Kuchenmeister Carl Process for treating fibrous materials
US2516447A (en) * 1947-02-24 1950-07-25 Elmer R Burling Method and apparatus for chemical treatment
US2772138A (en) * 1952-12-31 1956-11-27 Hercules Powder Co Ltd Continuous bleaching process
US3293117A (en) * 1963-03-27 1966-12-20 Improved Machinery Inc High density pulp mixing
CA834629A (en) * 1966-09-30 1970-02-17 Amiel W. Brinkley, Jr. Rapid high consistency bleaching of pulp
SE355614B (de) * 1970-05-13 1973-04-30 Mo Och Domsjoe Ab
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
JPS5111681A (de) * 1974-07-19 1976-01-29 Sanyo Electric Co
SE389351B (sv) * 1975-03-14 1976-11-01 Kamyr Ab Sett och anordning for fordelning och inblandning av gas och/eller vetska i massasuspensioner av hog koncentration.
SE403916B (sv) * 1975-06-04 1978-09-11 Rolf Bertil Reinhall Anordning vid malapparater for lignocellulosahaltigt material
JPS52114702A (en) * 1976-03-19 1977-09-26 Toyo Pulp Co Ltd Process and device for treating cellulose material
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp

Also Published As

Publication number Publication date
FI831474A0 (fi) 1983-04-29
DE3176561D1 (en) 1988-01-21
BR8109040A (pt) 1983-09-06
WO1983000816A1 (en) 1983-03-17
EP0087412B1 (de) 1987-12-09
FI831474L (fi) 1983-04-29
EP0087412A1 (de) 1983-09-07
JPS58501328A (ja) 1983-08-11
NO831429L (no) 1983-04-22
FI74497B (fi) 1987-10-30
ATE31249T1 (de) 1987-12-15
EP0087412A4 (de) 1985-06-10

Similar Documents

Publication Publication Date Title
US4298426A (en) Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
US4295926A (en) Method and apparatus for treating pulp with oxygen
US4298427A (en) Method and apparatus for intimately mixing oxygen and pulp while using an alkali to extract bleaching by-products
US4303470A (en) Method and apparatus for mixing gases with a wood pulp slurry
US4295925A (en) Treating pulp with oxygen
FI61925B (fi) Saett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tvao eller flera steg varav det sista med syrgas
AU760949B2 (en) Method and apparatus for pulp yield enhancement
US4295927A (en) Method and apparatus for treating pulp with oxygen and storing the treated pulp
US4288288A (en) Apparatus for mixing chemicals into pulp at a refiner inlet
US20210040688A1 (en) Method of producing dissolving pulp
FI74497C (fi) Foerfarande foer blandning av kemikalier med massa av ved och vid foerfarandet anvaend blandare.
US6733625B2 (en) Method and apparatus for treating pulp
EP0088073A4 (de) Verfahren zum behandeln von pulpe mit mehreren sauerstoffstufen.
US6315863B1 (en) Chlorine dioxide pulp bleaching process having reduced barium scaling by recycling post-chlorination waste filtrate
AU7586681A (en) Treating pulp with oxygen
US8052839B2 (en) Apparatus and method for washing pulps
AU7588681A (en) Treating pulp with oxygen
CA1134558A (en) Treating pulp with oxygen
CA1249904A (en) Oxygen alkali extraction of cellulosic pulp
CA1186106A (en) Process and apparatus for the oxygen delignification of pulp
EP0303962A2 (de) Verfahren zur alkalischen Extraktion in Gegenwart von Sauerstoff für die Herstellung von gebleichter Pulpe
NO864070L (no) Fremgangsmaate og apparatur for alkalisk delignifisering av lignocelluloseholdige fibermaterialer.

Legal Events

Date Code Title Description
PC Transfer of assignment of patent

Owner name: SUNDS DEFIBRATOR PORI OY

MM Patent lapsed
MM Patent lapsed

Owner name: SUNDS DEFIBRATOR PORI OY