SE394466B - Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas - Google Patents

Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas

Info

Publication number
SE394466B
SE394466B SE7406537A SE7406537A SE394466B SE 394466 B SE394466 B SE 394466B SE 7406537 A SE7406537 A SE 7406537A SE 7406537 A SE7406537 A SE 7406537A SE 394466 B SE394466 B SE 394466B
Authority
SE
Sweden
Prior art keywords
lignocellulosa
oxygen
last
several steps
alkaline delignification
Prior art date
Application number
SE7406537A
Other languages
English (en)
Other versions
SE394466C (sv
SE7406537L (sv
Inventor
N Mannbro
Original Assignee
Skogegarnas Ind Ab
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 Skogegarnas Ind Ab filed Critical Skogegarnas Ind Ab
Priority to SE7406537A priority Critical patent/SE394466C/sv
Priority to CA226,135A priority patent/CA1035104A/en
Priority to US05/574,908 priority patent/US4155806A/en
Priority to BR3763/75A priority patent/BR7502958A/pt
Priority to FI751443A priority patent/FI61925C/fi
Priority to JP50058466A priority patent/JPS6012477B2/ja
Publication of SE7406537L publication Critical patent/SE7406537L/sv
Publication of SE394466B publication Critical patent/SE394466B/sv
Publication of SE394466C publication Critical patent/SE394466C/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
    • 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
    • D21C9/1026—Other features in bleaching processes
    • 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
    • D21C3/22—Other features of pulping processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE7406537A 1974-05-16 1974-05-16 Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas SE394466C (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE7406537A SE394466C (sv) 1974-05-16 1974-05-16 Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas
CA226,135A CA1035104A (en) 1974-05-16 1975-05-02 Method for continuous alkaline delignification of lignocellulose material in two or more steps, the final of which with oxygen
US05/574,908 US4155806A (en) 1974-05-16 1975-05-06 Method for continuous alkaline delignification of lignocellulose material in two or more steps, the final of which with oxygen
BR3763/75A BR7502958A (pt) 1974-05-16 1975-05-14 Processo para a polpacao continua de material ligneo-celulosico
FI751443A FI61925C (fi) 1974-05-16 1975-05-15 Saett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tvao eller flera steg varav det sista med syrgas
JP50058466A JPS6012477B2 (ja) 1974-05-16 1975-05-16 リグノセルロ−ス物質の連続アルカリ脱リグニン化法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7406537A SE394466C (sv) 1974-05-16 1974-05-16 Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas

Publications (3)

Publication Number Publication Date
SE7406537L SE7406537L (sv) 1975-11-17
SE394466B true SE394466B (sv) 1977-06-27
SE394466C SE394466C (sv) 1986-06-23

Family

ID=20321136

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7406537A SE394466C (sv) 1974-05-16 1974-05-16 Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas

Country Status (6)

Country Link
US (1) US4155806A (sv)
JP (1) JPS6012477B2 (sv)
BR (1) BR7502958A (sv)
CA (1) CA1035104A (sv)
FI (1) FI61925C (sv)
SE (1) SE394466C (sv)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274913A (en) * 1978-05-23 1981-06-23 Toyo Pulp Co., Ltd. Process for producing alkali pulp
SE412771C (sv) * 1978-07-27 1981-07-13 Obbola Linerboard Ab Sett vid satsvis kokning av cellulosamaterial for att tillvarata verme- och terpentininnehall i blasanga
US4436586A (en) 1982-01-22 1984-03-13 Kamyr, Inc. Method of producing kraft pulp using an acid prehydrolysis and pre-extraction
US5211811A (en) * 1989-02-15 1993-05-18 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5217574A (en) * 1989-02-15 1993-06-08 Union Camp Patent Holdings Inc. Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
US5409570A (en) * 1989-02-15 1995-04-25 Union Camp Patent Holding, Inc. Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5053108A (en) * 1989-06-28 1991-10-01 Kamyr Ab High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5174861A (en) * 1990-10-26 1992-12-29 Union Camp Patent Holdings, Inc. Method of bleaching high consistency pulp with ozone
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
NZ242792A (en) * 1991-05-24 1993-12-23 Union Camp Patent Holding Two-stage pulp bleaching reactor: pulp mixed with ozone in first stage.
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5728265A (en) * 1995-06-12 1998-03-17 Henkel Corporation Process for enhancing white liquor penetration into wood chips by contacting the chips with a mixture of the white liquor and a polymethylalkyl siloxane
US7815741B2 (en) 2006-11-03 2010-10-19 Olson David A Reactor pump for catalyzed hydrolytic splitting of cellulose
US7815876B2 (en) 2006-11-03 2010-10-19 Olson David A Reactor pump for catalyzed hydrolytic splitting of cellulose
US20110281298A1 (en) * 2010-05-11 2011-11-17 Andritz Inc. Method and apparatus to extracted and reduce dissolved hemi-cellulosic solids in biomass following pre-hydrolysis
SE539501C2 (sv) * 2014-10-31 2017-10-03 Valmet Oy Method and arrangement for discharge dilution

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB945957A (en) * 1960-02-08 1964-01-08 Ass Pulp & Paper Mills Continuous pulping process
US3413189A (en) * 1964-01-29 1968-11-26 Kamyr Ab Method of performing hydrolysis and alkalic digestion of cellulosic fiber material with prevention of lignin precipitation
US3679543A (en) * 1970-08-18 1972-07-25 Calgon Corp Controlling the cooking process in pulp digestion by differential conductivity measurements
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US3830688A (en) * 1970-10-23 1974-08-20 Skogsaegarnas Ind Ab Method of reducing the discharge of waste products from pulp mills
SE373397C (sv) * 1972-03-30 1984-02-06 Mo Och Domsjoe Ab Sett att forbettra blekningsforloppet vid bleknig av cellulosamassa med en syre innehallande gas
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen

Also Published As

Publication number Publication date
SE394466C (sv) 1986-06-23
SE7406537L (sv) 1975-11-17
US4155806A (en) 1979-05-22
JPS6012477B2 (ja) 1985-04-01
FI751443A (sv) 1975-11-17
FI61925C (fi) 1982-10-11
JPS5129501A (en) 1976-03-12
BR7502958A (pt) 1976-03-23
CA1035104A (en) 1978-07-25
FI61925B (fi) 1982-06-30

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