SE469634B - Apparat och process foer delignifiering av cellulosamassa - Google Patents

Apparat och process foer delignifiering av cellulosamassa

Info

Publication number
SE469634B
SE469634B SE9000162A SE9000162A SE469634B SE 469634 B SE469634 B SE 469634B SE 9000162 A SE9000162 A SE 9000162A SE 9000162 A SE9000162 A SE 9000162A SE 469634 B SE469634 B SE 469634B
Authority
SE
Sweden
Prior art keywords
chamber
pulp slurry
slurry
treatment
conical
Prior art date
Application number
SE9000162A
Other languages
English (en)
Swedish (sv)
Other versions
SE9000162L (sv
SE9000162D0 (sv
Inventor
J Kido
H Yamanaka
M Hirasawa
K Tsuchiya
Original Assignee
Oji Paper 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 Oji Paper Co filed Critical Oji Paper Co
Publication of SE9000162D0 publication Critical patent/SE9000162D0/xx
Publication of SE9000162L publication Critical patent/SE9000162L/
Publication of SE469634B publication Critical patent/SE469634B/sv

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
    • 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
    • D21C7/00—Digesters
    • 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

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
SE9000162A 1989-06-01 1990-01-17 Apparat och process foer delignifiering av cellulosamassa SE469634B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13740389 1989-06-01

Publications (3)

Publication Number Publication Date
SE9000162D0 SE9000162D0 (sv) 1990-01-17
SE9000162L SE9000162L (sv) 1990-12-02
SE469634B true SE469634B (sv) 1993-08-09

Family

ID=15197830

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000162A SE469634B (sv) 1989-06-01 1990-01-17 Apparat och process foer delignifiering av cellulosamassa

Country Status (7)

Country Link
US (1) US5034095A (fr)
JP (1) JPH0816315B2 (fr)
BR (1) BR9000983A (fr)
CA (1) CA2007986C (fr)
FI (1) FI94969C (fr)
NO (1) NO176446C (fr)
SE (1) SE469634B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5411634A (en) * 1991-04-30 1995-05-02 Kamyr, Inc. Medium consistency ozone bleaching
ZA924351B (en) * 1991-06-27 1993-03-31 Ahlstroem Oy Ozone bleaching process
ZA93224B (en) * 1992-01-22 1993-08-18 Olin Corp Gas phase delignification of lignocellulosic material.
US5372679A (en) * 1992-06-08 1994-12-13 Air Products And Chemicals, Inc. Reactor system for treating cellulosic pulp at a constant upward flow velocity
US6340409B1 (en) * 1993-04-29 2002-01-22 Lewis Donald Shackford Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release
US5460696A (en) * 1993-08-12 1995-10-24 The Boc Group, Inc. Oxygen delignification method incorporating wood pulp mixing apparatus
ZA947310B (en) * 1993-09-22 1995-05-10 Ingersoll Rand Co Method of and apparatus for oxygen delignifiation of medium consistency pulp slurry
US5500084A (en) * 1994-09-21 1996-03-19 Hoffman Environmental Systems, Inc. Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone
FI105701B (fi) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi
SE505141C2 (sv) * 1995-10-23 1997-06-30 Sunds Defibrator Ind Ab Syrgasdelignifiering av massa i två steg med hög satsning av alkali och syrgas och temperatur under 90 C i första steget
US6319357B1 (en) 1995-10-23 2001-11-20 Valmet Fibertech Aktiebolag Method for two-stage oxygen bleaching and delignification of chemical pulp
US5755928A (en) * 1995-12-07 1998-05-26 Iogen Corporation Method for automated monitoring of pulp retention time using an iodide salt as a tracer
CA2239855C (fr) * 1995-12-07 2002-07-02 Beloit Technologies, Inc. Delignification par l'oxygene d'une pate a papier de consistance moyenne
EP0866895B1 (fr) * 1995-12-07 2000-06-14 Beloit Technologies, Inc. Delignification par de l'oxygene d'une pate a papier de consistance moyenne
DE19615226A1 (de) * 1996-04-18 1997-10-23 Voith Sulzer Papiermasch Gmbh Trockenpartie
SE510740C2 (sv) * 1996-11-26 1999-06-21 Sunds Defibrator Ind Ab Styrning av syrgasdelignifiering
DE19821311C1 (de) * 1998-05-13 1999-10-07 Voith Sulzer Papiertech Patent Verfahren zur Bleiche von Papierfaserstoff
CA2452145A1 (fr) * 2003-06-03 2004-12-03 David Tarasenko Methode de production de pate et de lignine
DE102005033347A1 (de) * 2005-07-16 2007-01-18 Henkel Kgaa Mittel, enthaltend mindestens ein Alkalimetallhalogenid als Tracer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353561A (en) * 1963-11-20 1967-11-21 Thiokol Chemical Corp Pass tube for gamma ray densitometers
US3398576A (en) * 1965-03-15 1968-08-27 Robert E. Cleary Flow measuring device
US3881985A (en) * 1971-11-08 1975-05-06 Improved Machinery Inc Continuous digester with strainer valve cycling
DE7541252U (de) * 1975-12-24 1976-04-29 Paul Gillet Gmbh, 6732 Edenkoben Vorrichtung zum reinigen der abgase von brennkraftmaschinen
US4548625A (en) * 1984-07-11 1985-10-22 Toyota Jidosha Kabushiki Kaisha Exhaust gas cleaning device for diesel engines

Also Published As

Publication number Publication date
FI94969C (fi) 1995-11-27
US5034095A (en) 1991-07-23
NO176446C (no) 1995-04-05
CA2007986C (fr) 1999-08-10
NO900259L (no) 1990-12-03
NO900259D0 (no) 1990-01-18
FI900623A0 (fi) 1990-02-08
JPH0816315B2 (ja) 1996-02-21
JPH0390691A (ja) 1991-04-16
SE9000162L (sv) 1990-12-02
BR9000983A (pt) 1991-02-19
FI94969B (fi) 1995-08-15
CA2007986A1 (fr) 1990-12-01
NO176446B (no) 1994-12-27
SE9000162D0 (sv) 1990-01-17

Similar Documents

Publication Publication Date Title
SE469634B (sv) Apparat och process foer delignifiering av cellulosamassa
EP0122747B1 (fr) Dispositif pour le désencrage
SE500455C2 (sv) Förfarande vid kontinuerlig kokning under förhöjt tryck och temperatur av fibermateral i en vertikal kokare
SE521099C2 (sv) Separator, system och förfarande för avskiljning av icke önskat material från en slurry av finfördelat cellulosahaltigt fibermaterial i en vätska
JP5752116B2 (ja) パルプのプロセス流内に化学物質を供給するための新しい方法
PL160297B1 (pl) tacji pianowej PL PL
SE421434B (sv) Skruvpress
SE518542C2 (sv) Kontinuerlig kokare förfarande för drift av kontinuerlig kokare och återföringssystem för kokvätska i en kontinuerlig kokare
US5236554A (en) Digester having plural screens with means for controlling liquid injection and withdrawal
US4238208A (en) Apparatus for degassing paper stock
KR100480874B1 (ko) 가스제거용기
EP0440455B1 (fr) Procédé et dispositif pour la séparation de gaz d'une suspension contenant du gaz
FI78745C (fi) Pumpning och foeraedling av saogspaon.
EP0055701B1 (fr) Méthode de régulation d'un récipient sous pression pour le traitement de pulpe cellulosique
SU660569A3 (ru) Аппарат дл дегазации суспензий
JP4488788B2 (ja) 気相式と満液式の連続蒸解缶に用いるトップセパレーターおよび蒸解缶運転モードの転換方法
US3622441A (en) Multiple discharge stock treatment apparatus and method
AU665057B2 (en) Separation device and process
US4056429A (en) Method for counter-current treatment of cellulose fiber material
FI66215B (fi) Saett vid kontinuerlig uppslutning av finfoerdelat cellulosahaltigt material
US3723243A (en) Continuous digester having selfregulating wood chip level
CA1044060A (fr) Digesteur sans tamis
US20220025578A1 (en) Arrangement and method for degassing a pump
AU690101B2 (en) Evaporator for crystallised aluminate liquors
US1282635A (en) Apparatus for the manufacture of cellulose.

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 9000162-9

Format of ref document f/p: F

NUG Patent has lapsed