DE69737603D1 - Verfahren zur kontrolle der sauerstoffdelignifizierung von zellstoff - Google Patents

Verfahren zur kontrolle der sauerstoffdelignifizierung von zellstoff

Info

Publication number
DE69737603D1
DE69737603D1 DE69737603T DE69737603T DE69737603D1 DE 69737603 D1 DE69737603 D1 DE 69737603D1 DE 69737603 T DE69737603 T DE 69737603T DE 69737603 T DE69737603 T DE 69737603T DE 69737603 D1 DE69737603 D1 DE 69737603D1
Authority
DE
Germany
Prior art keywords
oxygen delignification
pulp
delignification step
chemicals
controlling
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 - Fee Related
Application number
DE69737603T
Other languages
English (en)
Other versions
DE69737603T2 (de
Inventor
Monica Bokstroem
Jan-Erik Haeggqvist
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.)
Valmet AB
Original Assignee
Valmet Fibertech 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20404765&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69737603(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Valmet Fibertech AB filed Critical Valmet Fibertech AB
Application granted granted Critical
Publication of DE69737603D1 publication Critical patent/DE69737603D1/de
Publication of DE69737603T2 publication Critical patent/DE69737603T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1052—Controlling the process
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
DE69737603T 1996-11-26 1997-11-06 Verfahren zur kontrolle der sauerstoffdelignifizierung von zellstoff Expired - Fee Related DE69737603T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9604350A SE510740C2 (sv) 1996-11-26 1996-11-26 Styrning av syrgasdelignifiering
SE9604350 1996-11-26
PCT/SE1997/001852 WO1998023810A1 (en) 1996-11-26 1997-11-06 Method for controlling oxygen delignification of pulp

Publications (2)

Publication Number Publication Date
DE69737603D1 true DE69737603D1 (de) 2007-05-24
DE69737603T2 DE69737603T2 (de) 2007-07-26

Family

ID=20404765

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69737603T Expired - Fee Related DE69737603T2 (de) 1996-11-26 1997-11-06 Verfahren zur kontrolle der sauerstoffdelignifizierung von zellstoff

Country Status (17)

Country Link
US (1) US6238517B1 (de)
EP (1) EP0941381B1 (de)
JP (1) JP4535515B2 (de)
CN (1) CN1103833C (de)
AT (1) ATE359392T1 (de)
AU (1) AU723369B2 (de)
BR (1) BR9713143A (de)
CA (1) CA2270598C (de)
DE (1) DE69737603T2 (de)
ES (1) ES2281110T3 (de)
ID (1) ID19277A (de)
NO (1) NO325724B1 (de)
NZ (1) NZ335724A (de)
PT (1) PT941381E (de)
SE (1) SE510740C2 (de)
WO (1) WO1998023810A1 (de)
ZA (1) ZA9710422B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE522593C2 (sv) * 1999-07-06 2004-02-24 Kvaerner Pulping Tech System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material
SE514825C2 (sv) 1999-09-16 2001-04-30 Aga Ab Oxygendelignifiering av cellulosamassa med oxiderad vitlut som alkalikälla
SE526000C2 (sv) * 2003-11-26 2005-06-14 Kvaerner Pulping Tech Metod och system för att styra tillsättning av syrgas och alkali vid syrgasdelignifiering
SE526707C2 (sv) * 2004-12-30 2005-10-25 Kvaerner Pulping Tech Metod för syrgasdelignifiering av cellulosamassa med inmixning av kemikalier vid högt tryck

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE373395B (sv) * 1972-12-19 1975-02-03 Mo Och Domsjoe Ab Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel
FI50745C (fi) * 1974-06-14 1976-06-10 Kaukas Ab Oy Menetelmä kahden kemikaalin annostuksen automaattiseksi säätämiseksi.
SE421019B (sv) * 1980-08-26 1981-11-16 Kamyr Ab Forfarande for kemikaliereglering vid behandling av en substans, speciellt massa, med gas
JPS5789690A (en) * 1980-11-21 1982-06-04 Toyo Pulp Co Ltd Alkali oxygen delignification of fiber substance
FI71178C (fi) * 1984-11-08 1988-05-18 Rauma Repola Oy Foerfarande foer reglering av syreblekningsprocess.
JPH0672386B2 (ja) * 1988-04-26 1994-09-14 新王子製紙株式会社 セルロースパルプの酸素による脱リグニン、漂白方法
US5217575A (en) * 1988-10-18 1993-06-08 Kamyr Ab Process for oxygen bleaching using two vertical reactors
SE467582B (sv) * 1988-10-18 1992-08-10 Kamyr Ab Saett vid oxygenblekning
US4946556A (en) * 1989-04-25 1990-08-07 Kamyr, Inc. Method of oxygen delignifying wood pulp with between stage washing
US5034095A (en) * 1989-06-01 1991-07-23 Oji Paper Co., Ltd. Apparatus and process for the delignification of cellulose pulp
JPH04272289A (ja) * 1991-02-21 1992-09-29 Mitsubishi Paper Mills Ltd セルロースパルプの酸素漂白法
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
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

Also Published As

Publication number Publication date
CA2270598C (en) 2005-05-03
BR9713143A (pt) 2000-02-08
CN1238817A (zh) 1999-12-15
WO1998023810A1 (en) 1998-06-04
SE510740C2 (sv) 1999-06-21
NO325724B1 (no) 2008-07-07
NO992491D0 (no) 1999-05-25
NO992491L (no) 1999-05-25
CA2270598A1 (en) 1998-06-04
US6238517B1 (en) 2001-05-29
ID19277A (id) 1998-06-28
JP2001504558A (ja) 2001-04-03
DE69737603T2 (de) 2007-07-26
AU723369B2 (en) 2000-08-24
AU5141398A (en) 1998-06-22
SE9604350D0 (sv) 1996-11-26
EP0941381B1 (de) 2007-04-11
SE9604350L (sv) 1998-05-27
PT941381E (pt) 2007-04-30
ZA9710422B (en) 1998-06-10
CN1103833C (zh) 2003-03-26
ATE359392T1 (de) 2007-05-15
JP4535515B2 (ja) 2010-09-01
EP0941381A1 (de) 1999-09-15
NZ335724A (en) 1999-09-29
ES2281110T3 (es) 2007-09-16

Similar Documents

Publication Publication Date Title
GR3031412T3 (en) Paper structure having at least three regions, and apparatus and process for making the same
DE69005308D1 (de) Verfahren zur herstellung von lignocellulosepulpe.
DE69412618T2 (de) Zerfaserte flaumpulpe, und verfahren zu ihrer herstellung
BR9712891A (pt) tágio único com ácido fórmico e lavagem com ácido perfórmico.
DE3574486D1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
NO176446C (no) Apparat og fremgangsmåte for delignifisering av cellulosemasse
EP0643163A3 (de) Verfahren zur Herstellung von oxydierter Weisslauge.
TR199600831A2 (tr) Azot üretimi yöntemi ve tertibati.
ATE254687T1 (de) Sauerstoffdelignifizierung von lignocelluloschischem zellstoff in zwei stufen
DE69737603D1 (de) Verfahren zur kontrolle der sauerstoffdelignifizierung von zellstoff
FI964499A0 (fi) Menetelmä delignifioitujen ja valkaistujen kemiallisten paperimassojen valmistamiseksi
SE0002789L (sv) Förfarande och anordning för uppmätning av blekningsbehov, blekbarhet, och effektivitet hos hemicellulasenzymbehandling av massa
DE69013159D1 (de) Verfahren zur herstellung von aufschlusslösungen mit hoher sulfidität für das kochen von sulfatpulpe.
TR199600901A2 (tr) Elyaf reaktiviteli azo boyar maddeleri, bunlarin üretilmesine mahsus usul ve bunlarin kullanilmasi.
NO942071D0 (no) Enzympreparat og fremgangsmåte til behandling av cellulosemasser
DK0993609T3 (da) Fremgangsmåde til fastlæggelse af antallet af komponenter i spidser, bånd og signaler i chromatogrammer, elektrogrammer og spektrogrammer af enhver art
SE9401628D0 (sv) Förfarande vid syrgasdelignifiering
DE69204457D1 (de) Verfahren zum bleichen und zur delignifizierung von chemischen papierzellstoffen.
SE9503694D0 (sv) Blekning av massa
SE9501623D0 (sv) Blekning av massa
SE9500926L (sv) Förfarande för blekning av massa
WO1997013916A3 (de) Verfahren zur bestimmung des endpunktes der zellstoffkochung und anordnung zum steuern der kochzeit bei der zellstoffkochung in einem reaktor
ATE207153T1 (de) Verfahren zur herstellung von gebleichten spezialzellstoffen
SE9604217D0 (sv) Method and apparatus for delignifying chemical pu lp
SE9802925L (sv) Förfarande och en anordning för simulering av en interaktionsprocess

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee