GB1445276A - Delignification and bleaching of wood pulp with oxygen - Google Patents

Delignification and bleaching of wood pulp with oxygen

Info

Publication number
GB1445276A
GB1445276A GB921874A GB921874A GB1445276A GB 1445276 A GB1445276 A GB 1445276A GB 921874 A GB921874 A GB 921874A GB 921874 A GB921874 A GB 921874A GB 1445276 A GB1445276 A GB 1445276A
Authority
GB
United Kingdom
Prior art keywords
pulp
slurry
oxygen
bleaching
pressure gradient
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
GB921874A
Other languages
English (en)
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.)
International Paper Co
Original Assignee
International 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 International Paper Co filed Critical International Paper Co
Publication of GB1445276A publication Critical patent/GB1445276A/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
    • 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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Cereal-Derived Products (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
GB921874A 1973-03-07 1974-02-28 Delignification and bleaching of wood pulp with oxygen Expired GB1445276A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00338862A US3832276A (en) 1973-03-07 1973-03-07 Delignification and bleaching of a cellulose pulp slurry with oxygen

Publications (1)

Publication Number Publication Date
GB1445276A true GB1445276A (en) 1976-08-11

Family

ID=23326465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB921874A Expired GB1445276A (en) 1973-03-07 1974-02-28 Delignification and bleaching of wood pulp with oxygen

Country Status (14)

Country Link
US (1) US3832276A (enrdf_load_stackoverflow)
JP (1) JPS5747798B2 (enrdf_load_stackoverflow)
AR (1) AR202919A1 (enrdf_load_stackoverflow)
BR (1) BR7401573D0 (enrdf_load_stackoverflow)
CA (1) CA1007807A (enrdf_load_stackoverflow)
DE (1) DE2410934C2 (enrdf_load_stackoverflow)
FI (1) FI59434C (enrdf_load_stackoverflow)
FR (1) FR2220620B1 (enrdf_load_stackoverflow)
GB (1) GB1445276A (enrdf_load_stackoverflow)
IT (1) IT1011546B (enrdf_load_stackoverflow)
NO (1) NO144930C (enrdf_load_stackoverflow)
PH (1) PH10177A (enrdf_load_stackoverflow)
SE (1) SE397983B (enrdf_load_stackoverflow)
ZA (1) ZA741287B (enrdf_load_stackoverflow)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI48764C (fi) * 1973-05-30 1977-07-26 Ahlstroem Oy Menetelmä ja laite selluloosamassan valkaisemiseksi molekylaarisella h apella.
US4089737A (en) * 1974-02-18 1978-05-16 Toyo Pulp Company, Ltd. Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
SE394466C (sv) * 1974-05-16 1986-06-23 Mannbro Systems Handelsbolag Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas
US3951733A (en) * 1974-11-06 1976-04-20 International Paper Company Delignification and bleaching of wood pulp with oxygen
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood pulp
AU3102077A (en) * 1976-12-01 1979-06-07 New Zealand Dev Finance Treating lignocellulosic or cellulosic pulp
US4216054A (en) * 1977-09-26 1980-08-05 Weyerhaeuser Company Low-consistency ozone delignification
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
US4209359A (en) * 1978-10-23 1980-06-24 International Paper Company Process for removing residual oxygen from oxygen-bleached pulp
US4259150A (en) * 1978-12-18 1981-03-31 Kamyr Inc. Plural stage mixing and thickening oxygen bleaching process
SE462919B (sv) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre
US4295925A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Treating pulp with oxygen
US4295927A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen and storing the treated pulp
US4295926A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen
US4294654A (en) * 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation
SE421019B (sv) * 1980-08-26 1981-11-16 Kamyr Ab Forfarande for kemikaliereglering vid behandling av en substans, speciellt massa, med gas
US4384920A (en) * 1981-04-06 1983-05-24 The Black Clawson Company Method and apparatus for oxygen delignification
FI67241B (fi) * 1981-06-10 1984-10-31 Aga Ab Saett foer blekning av cellulosahaltiga material
ATE31249T1 (de) * 1981-09-04 1987-12-15 Weyerhaeuser Co Verfahren und vorrichtung zum mischen von pulpe mit gasen.
EP0088073A4 (en) * 1981-09-04 1984-01-09 Weyerhaeuser Co METHOD FOR TREATING PULP WITH MULTIPLE OXYGEN LEVELS.
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen
US4684442A (en) * 1984-03-29 1987-08-04 Weyerhaeuser Company Oxygen reactor deaeration tank and system
FR2566015B1 (fr) * 1984-06-15 1986-08-29 Centre Tech Ind Papier Procede de blanchiment de pate mecanique par le peroxyde d'hydrogene
FI71178C (fi) * 1984-11-08 1988-05-18 Rauma Repola Oy Foerfarande foer reglering av syreblekningsprocess.
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
ATE54056T1 (de) * 1985-04-01 1990-07-15 Weyerhaeuser Co Entlueftungsbehaelter und einrichtung zu dessen verwendung.
US4886577A (en) * 1985-05-03 1989-12-12 Kamyr, Inc. Method and apparatus for mixing oxygen gas with medium consistency pulp in a pump discharge
US4978426A (en) * 1987-02-24 1990-12-18 Westvaco Corporation Production of high strength linerboard with oxygen and alkali
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
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
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
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
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
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
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
WO1991000386A1 (en) * 1989-06-30 1991-01-10 Nekoosa Papers, Inc. A method for bleaching kraft pulp with a mixture of oxygen and peroxide
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
US5174861A (en) * 1990-10-26 1992-12-29 Union Camp Patent Holdings, Inc. Method of bleaching high consistency pulp with ozone
EP0515303B2 (en) * 1991-05-24 2001-07-04 Union Camp Patent Holding, Inc. Method for ozone bleaching
CA2082557C (en) * 1992-02-24 1997-03-11 Charles W. Hankins Integrated pulping process of waste paper yielding tissue-grade paper fibers
US5387317A (en) * 1993-01-28 1995-02-07 The Mead Corporation Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
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
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
US7812153B2 (en) * 2004-03-11 2010-10-12 Rayonier Products And Financial Services Company Process for manufacturing high purity xylose

Also Published As

Publication number Publication date
DE2410934C2 (de) 1983-12-01
FI59434C (fi) 1983-07-04
SE397983B (sv) 1977-11-28
NO740795L (no) 1974-09-10
FR2220620A1 (enrdf_load_stackoverflow) 1974-10-04
BR7401573D0 (pt) 1974-11-05
AU6602374A (en) 1975-08-28
FI59434B (fi) 1981-04-30
NO144930B (no) 1981-08-31
US3832276A (en) 1974-08-27
AR202919A1 (es) 1975-07-31
JPS5747798B2 (enrdf_load_stackoverflow) 1982-10-12
CA1007807A (en) 1977-04-05
IT1011546B (it) 1977-02-10
PH10177A (en) 1976-09-16
DE2410934A1 (de) 1974-09-19
ZA741287B (en) 1975-02-26
FR2220620B1 (enrdf_load_stackoverflow) 1978-04-21
JPS5024503A (enrdf_load_stackoverflow) 1975-03-15
NO144930C (no) 1981-12-09

Similar Documents

Publication Publication Date Title
GB1445276A (en) Delignification and bleaching of wood pulp with oxygen
GB1509568A (en) Delignification and bleaching of cellulose pulp with oxygen
GB1274615A (en) Bleaching of cellulosic pulp
DE59309094D1 (de) Holzaufschluss mit Essigsäure unter Zusatz von Ameisensäuren
ES460740A1 (es) Procedimiento para fabricar papel y carton.
GB778791A (en) Improvements in or relating to a method of and means for manufacturing paper
BG49609A3 (bg) Метод за получаване на водни суспензии,съдържащи над 65% тегловни калциев карбонат
ATE64140T1 (de) Gewinnung von lignin.
NZ331470A (en) Paper making processes which utilise bentonite in the form of a concentrate and sodium citrate
ZA933906B (en) Method of bleaching paper pulp
NO824357L (no) Fremgangsmåte til fremstilling av halvbleket cellulose.
GB1434232A (en) Method of producing cellulose pulp by means of oxygen gas delignification
GB1406508A (en) Liquefying starch
GB1494047A (en) Activated alkali cellulose and derivatives formed therefrom and a process for making the same
ES458434A1 (es) Procedimiento para la deslignificacion de material lignoce- lulosico.
CN111608018A (zh) 一种低定量高透气性包装原纸制备方法
GB1242709A (en) Bleaching of cellulosic pulp
GB1452710A (en) Method for bleaching of material containing cellulose
US2465327A (en) Treatment of ground wood pulp
SU518544A1 (ru) Способ отбелки целлюлозы
GB400974A (en) Improvements in or relating to the production of cellulosic materials or cellulose
GB1432245A (en) Method of pulping wood
FR2237843A1 (en) Bleaching and clarifying of aqueous effluent - using finely divided air with small amount of ozone and opt. chlorine
IE41096B1 (en) A method for producing cellulose pulp from peat for use as a raw material in papermaking
GB1476764A (en) Packages for the feeding of livestock

Legal Events

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