SE360128C - Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali - Google Patents

Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali

Info

Publication number
SE360128C
SE360128C SE7011537A SE1153770A SE360128C SE 360128 C SE360128 C SE 360128C SE 7011537 A SE7011537 A SE 7011537A SE 1153770 A SE1153770 A SE 1153770A SE 360128 C SE360128 C SE 360128C
Authority
SE
Sweden
Prior art keywords
cellulosamassa
blake
alkali
acid
present
Prior art date
Application number
SE7011537A
Other languages
English (en)
Swedish (sv)
Other versions
SE360128B (enEXAMPLES
Inventor
H O Samuelsson
I L-A Croon
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE7011537A priority Critical patent/SE360128C/xx
Priority to ZA715394A priority patent/ZA715394B/xx
Priority to AU32329/71A priority patent/AU462469B2/en
Priority to NO3096/71A priority patent/NO132361C/no
Priority to FI2335/71A priority patent/FI59273C/fi
Priority to DE2141757A priority patent/DE2141757C3/de
Priority to US00173764A priority patent/US3759783A/en
Priority to BR5531/71A priority patent/BR7105531D0/pt
Priority to FR7130726A priority patent/FR2105990A5/fr
Priority to AT744671A priority patent/AT309978B/de
Priority to CA121,331A priority patent/CA964009A/en
Priority to JP46064493A priority patent/JPS5025044B1/ja
Publication of SE360128B publication Critical patent/SE360128B/xx
Publication of SE360128C publication Critical patent/SE360128C/xx

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE7011537A 1970-08-25 1970-08-25 Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali SE360128C (sv)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE7011537A SE360128C (sv) 1970-08-25 1970-08-25 Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
ZA715394A ZA715394B (en) 1970-08-25 1971-08-12 A process for bleaching cellulose pulp
AU32329/71A AU462469B2 (en) 1970-08-25 1971-08-13 A process for bleaching cellulose pulp
NO3096/71A NO132361C (enEXAMPLES) 1970-08-25 1971-08-19
FI2335/71A FI59273C (fi) 1970-08-25 1971-08-20 Foerfarande foer blekning av cellulosamassa
DE2141757A DE2141757C3 (de) 1970-08-25 1971-08-20 Verfahren zum Bleichen von Zellstoffbrei
US00173764A US3759783A (en) 1970-08-25 1971-08-23 Process for bleaching cellulose pulp with alkali and oxygen gas utilizing waste bleaching liquor from an alka line oxygen gas bleaching stage
BR5531/71A BR7105531D0 (pt) 1970-08-25 1971-08-24 Processo para alvejar pasta de celulose
FR7130726A FR2105990A5 (enEXAMPLES) 1970-08-25 1971-08-24
AT744671A AT309978B (de) 1970-08-25 1971-08-25 Verfahren zum Bleichen von Zellstoff
CA121,331A CA964009A (en) 1970-08-25 1971-08-25 Process for bleaching cellulose pulp with alkali and oxygen gas utilizing waste bleaching liquor
JP46064493A JPS5025044B1 (enEXAMPLES) 1970-08-25 1971-08-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7011537A SE360128C (sv) 1970-08-25 1970-08-25 Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali

Publications (2)

Publication Number Publication Date
SE360128B SE360128B (enEXAMPLES) 1973-09-17
SE360128C true SE360128C (sv) 1983-10-31

Family

ID=20294147

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7011537A SE360128C (sv) 1970-08-25 1970-08-25 Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali

Country Status (12)

Country Link
US (1) US3759783A (enEXAMPLES)
JP (1) JPS5025044B1 (enEXAMPLES)
AT (1) AT309978B (enEXAMPLES)
AU (1) AU462469B2 (enEXAMPLES)
BR (1) BR7105531D0 (enEXAMPLES)
CA (1) CA964009A (enEXAMPLES)
DE (1) DE2141757C3 (enEXAMPLES)
FI (1) FI59273C (enEXAMPLES)
FR (1) FR2105990A5 (enEXAMPLES)
NO (1) NO132361C (enEXAMPLES)
SE (1) SE360128C (enEXAMPLES)
ZA (1) ZA715394B (enEXAMPLES)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449828A (en) * 1973-04-26 1976-09-15 Canadian Ind Oxygen pulping process
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
SE393138B (sv) * 1974-03-14 1977-05-02 Mo Och Domsjoe Ab Forfarande for blekning av cellulosa med en syre innehallande gas i nervaro av natriumbikarbonat
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
FR2282500A1 (fr) * 1974-08-20 1976-03-19 Grp Europ De Cellulose Procede de fabrication de pate a papier
SE413684C (sv) * 1974-09-23 1987-05-18 Mo Och Domsjoe Ab Forfarande for framstellning av cellulosamassa i utbytesomradet 65-95 %
SE385027B (sv) * 1974-09-27 1976-05-31 Mo Och Domsjoe Ab Forfarande for att frilegga cellulosafibrer
US4119486A (en) * 1975-08-14 1978-10-10 Westvaco Corporation Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
LU74434A1 (enEXAMPLES) * 1976-02-25 1977-09-12
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
FI773597A7 (fi) * 1976-12-01 1978-06-02 New Zealand Dev Finance Foerfarande foer behandling av lignocellulosa-eller cellulosafibermassa sao att behandlingen fraemjar kroekning av massans fibrer och foerbaettrar papprets rivhaollfasthet
US4259149A (en) * 1978-05-03 1981-03-31 Hooker Chemicals & Plastics Corp. Method of reducing waste stream pollutants by the control and separation of waste contaminants from a multi-stage cellulosic bleaching sequence
SE413785B (sv) * 1978-09-22 1980-06-23 Mo Och Domsjoe Ab Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp
US4248662A (en) * 1979-01-22 1981-02-03 The Black Clawson Company Oxygen pulping with recycled liquor
SE462919B (sv) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
SE441192B (sv) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel
US4416727A (en) * 1982-01-11 1983-11-22 Air Products And Chemicals, Inc. Process for recovering fiber from wet-strength resin coated paper
DE3428352A1 (de) * 1984-08-01 1986-02-13 Degussa Ag, 6000 Frankfurt Verfahren zur delignifizierung und bleiche von zellstoffen
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
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
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
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
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
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
US6106667A (en) * 1992-02-21 2000-08-22 Ahlstrom Machinery Inc. Treatment of recycled bleach plant filtrates
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
EP0647466A3 (de) * 1993-10-08 1996-01-17 Akzo Nobel Nv Cellulosische Membranen.
SE9401771D0 (sv) * 1994-05-24 1994-05-24 Hans Olof Samuelson Process for removal of metal compounds in lignocellulosic pulp
US5770010A (en) * 1995-04-20 1998-06-23 R-J Holding Company Pulping process employing nascent oxygen
US6325892B1 (en) * 1998-09-23 2001-12-04 University Of New Brunswick Method of delignifying sulphite pulp with oxygen and borohydride
SE522161C2 (sv) * 1999-06-17 2004-01-20 Kvaerner Pulping Tech Förfarande och anordning för syrgasdelignifiering med förbättrad kappareduktion
US20070284068A1 (en) * 2006-05-19 2007-12-13 The Research Foundation Of State University Of New York Methods for carbonate pretreatment and pulping of cellulosic material
FI20070126A0 (fi) * 2006-09-08 2007-02-13 Linde Ag Menetelmä hartsin poistamiseksi massasta ja hiilidioksidin tai (bi)karbonaatin käyttö tähän tarkoitukseen
US8303767B2 (en) * 2008-03-18 2012-11-06 The Research Foundation Of State University Of New York Methods of pretreating comminuted cellulosic material with carbonate-containing solutions

Also Published As

Publication number Publication date
AU462469B2 (en) 1975-06-26
AU3232971A (en) 1973-02-15
FR2105990A5 (enEXAMPLES) 1972-04-28
ZA715394B (en) 1972-05-31
CA964009A (en) 1975-03-11
NO132361B (enEXAMPLES) 1975-07-21
US3759783A (en) 1973-09-18
FI59273B (fi) 1981-03-31
SE360128B (enEXAMPLES) 1973-09-17
NO132361C (enEXAMPLES) 1977-06-02
FI59273C (fi) 1981-07-10
BR7105531D0 (pt) 1973-05-31
DE2141757C3 (de) 1979-06-21
JPS5025044B1 (enEXAMPLES) 1975-08-20
DE2141757A1 (de) 1972-03-16
AT309978B (de) 1973-09-10
DE2141757B2 (de) 1973-08-23

Similar Documents

Publication Publication Date Title
SE360128C (sv) Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
SE405115B (sv) Sett att framstella nya fenyl-imidazolyl-alkanylderivat med antimykotisk verkan
DK132753C (da) Forbindelser med indekticid virkning
SE388416B (sv) Sett att framstella livsmedelssmakemnen
SE412586B (sv) Sett att framstella isoflavonderivat
FI56649B (fi) Anordning vid lastbilar med hoej- och saenkbar baerram
SE391181B (sv) Sett att framstella kinazolinderivat
SE389699B (sv) Demonterbar mellanvegg jemte sett att montera densamma
SE384867B (sv) Sett att framstella 2-substituerade adenosinderivat
SE391337B (sv) Sett att framstella 2-substituerade adenosinderivat
SE7405588L (sv) Nya trans-expoxi-cis-alkaner och sett att framstella desamma
SE389116B (sv) Sett att syntetisera pteridiner
SE385981B (sv) Sett att indikera nervaron av vanadin i en jordformation
SE7707926L (sv) Sett vid framstellning av natriumpolysulfid
FI55639B (fi) Foerfarande foer framstaellning av en med tillsatsaemnen saerskilt eldskyddsmedel belagd fiberprodukt
FI56020C (fi) Foerfarande foer behandling av skumplastfoeremaol vilka skall foerses med ett taeckskikt av polyesterharts
SE390301B (sv) Sett att framstella butyrfenonederivat
ZA71661B (en) Improvements relating to esters of the fluocinolonacetonide
SE390308B (sv) Sett att framstella substituerade kobamider
SE395143B (sv) Sett for framstellning av 1,3,3-trisubstituerade 3-azolylpropiner med antimykotisk verkan
FI54450B (fi) Anordning foer underlaettande av arbeten vid fartygsskrov
SE385887B (sv) Forfarande for framstellning av 5-substituerad-5-fenylalkylbarbitursyra med analgetisk verkan
SE386443B (sv) Sett att framstella bensodiazepinderivat
FI55919C (fi) Styrapparat med ett relae
SE398105B (sv) Sett att framstella keramiska foremal