BR9206366A - Processo para deslignificar polpa de madeira - Google Patents

Processo para deslignificar polpa de madeira

Info

Publication number
BR9206366A
BR9206366A BR9206366A BR9206366A BR9206366A BR 9206366 A BR9206366 A BR 9206366A BR 9206366 A BR9206366 A BR 9206366A BR 9206366 A BR9206366 A BR 9206366A BR 9206366 A BR9206366 A BR 9206366A
Authority
BR
Brazil
Prior art keywords
wood pulp
delignifying wood
delignifying
pulp
wood
Prior art date
Application number
BR9206366A
Other languages
English (en)
Inventor
Sudhir K Mendiratta
David W Cawlfield
Original Assignee
Olin Corp
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 Olin Corp filed Critical Olin Corp
Publication of BR9206366A publication Critical patent/BR9206366A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C01B11/023—Preparation from chlorites or chlorates
    • C01B11/025—Preparation from chlorites or chlorates from chlorates without any other reaction reducing agent than chloride ions
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
BR9206366A 1991-08-23 1992-07-24 Processo para deslignificar polpa de madeira BR9206366A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74906691A 1991-08-23 1991-08-23
PCT/US1992/006141 WO1993004231A1 (en) 1991-08-23 1992-07-24 Process for gas phase delignifying wood pulp

Publications (1)

Publication Number Publication Date
BR9206366A true BR9206366A (pt) 1994-11-22

Family

ID=25012102

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9206366A BR9206366A (pt) 1991-08-23 1992-07-24 Processo para deslignificar polpa de madeira

Country Status (10)

Country Link
US (1) US5474654A (pt)
EP (1) EP0651832B1 (pt)
AU (1) AU655842B2 (pt)
BR (1) BR9206366A (pt)
CA (1) CA2116014A1 (pt)
DE (1) DE69223997T2 (pt)
DK (1) DK0651832T3 (pt)
FI (1) FI940832A0 (pt)
WO (1) WO1993004231A1 (pt)
ZA (1) ZA925702B (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1181173A (ja) * 1997-09-01 1999-03-26 Oji Paper Co Ltd 漂白パルプの製造方法
FR2769327B1 (fr) * 1997-10-03 1999-11-05 Atochem Elf Sa Procede de blanchiment de pates a papier chimiques
CA2321683C (en) * 1998-03-16 2005-09-27 Pulp And Paper Research Institute Of Canada Additives to chlorine dioxide bleaching
WO2001059203A2 (en) * 2000-02-09 2001-08-16 Akzo Nobel N.V. Pulping process
US6752904B2 (en) 2000-02-09 2004-06-22 Akzo Nobel N.V. Process for removal of lignin from lignocellulosic material
US20050051288A1 (en) * 2003-09-09 2005-03-10 Caifang Yin Extended retention and medium consistency pulp treatment
US11142455B2 (en) * 2019-06-05 2021-10-12 Dripping Wet Water, Inc. Pressurized catalytic production of dioxide species
CA3102541A1 (en) * 2020-12-11 2022-06-11 Sixring Inc. Novel approach to biomass delignification

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE314286B (pt) * 1964-08-07 1969-09-01 Pulp Paper Res Inst
GB1100709A (en) * 1965-06-25 1968-01-24 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material
US3579419A (en) * 1967-04-24 1971-05-18 Pulp Paper Res Inst Treatment of fluffed pulp fibers with gaseous chlorine
US3630828A (en) * 1968-05-13 1971-12-28 Pulp Paper Res Inst Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp
CA902859A (en) * 1969-11-26 1972-06-20 Pulp And Paper Research Institute Of Canada Chemical reaction between a solid and a gas
US3810969A (en) * 1971-06-22 1974-05-14 Hooker Chemical Corp Process for the production of chlorine dioxide
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
US4325934A (en) * 1980-09-22 1982-04-20 Erco Industries Limited Production of chlorine dioxide with conversion of by-product solid phase sodium acid sulphate to its neutral form
US4798715A (en) * 1988-02-05 1989-01-17 Eltech Systems Corporation Producing chlorine dioxide from chlorate salt
US5089095A (en) * 1990-03-30 1992-02-18 Olin Corporation Electrochemical process for producing chlorine dioxide from chloric acid
KR0148248B1 (ko) * 1991-05-17 1998-08-17 폴 웨인스타인 이산화염소의 제조방법

Also Published As

Publication number Publication date
WO1993004231A1 (en) 1993-03-04
AU655842B2 (en) 1995-01-12
EP0651832A1 (en) 1995-05-10
EP0651832A4 (en) 1995-08-09
DE69223997D1 (de) 1998-02-12
FI940832A (fi) 1994-02-22
ZA925702B (en) 1993-03-05
AU2472092A (en) 1993-03-16
US5474654A (en) 1995-12-12
EP0651832B1 (en) 1998-01-07
DE69223997T2 (de) 1998-05-07
FI940832A0 (fi) 1994-02-22
DK0651832T3 (da) 1998-05-11
CA2116014A1 (en) 1993-03-04

Similar Documents

Publication Publication Date Title
BR9408596A (pt) Processo para alvejamento de polpa de madeira kraft
BR9306334A (pt) Processo para o branqueamento de polpa
BR9005476A (pt) Processo para alvejamento,isento de cloro,de polpas
BR9706827A (pt) Processo aperfeiçoado para amaciar polpa e produtos de polpa produzidos pelo mesmo
BR9407049A (pt) Processo para tratar uma superficie
BR9609084A (pt) Um processo para o tratamento de madeira com bactérias
FI896163A (fi) Paperikoneen pitkävyöhykepuristin
BR9204539A (pt) Processo para tratar uma polpa lingnocelulosica e aparas de madeira
BR9200401A (pt) Processo para a delignificacao de materiais de fibras vegetais
BR9503523A (pt) Solução de decapagem e processo para tingimento de madeira
BR9206211A (pt) Processo para tratamento de polpa aquosa
BR9405666A (pt) Processo para secagem de filamentos de madeira
BR9408083A (pt) Processo para produzir elementos de madeira dura
BR9005856A (pt) Processo para branqueamento de polpa de madeira
BR9206366A (pt) Processo para deslignificar polpa de madeira
FI944318A (fi) Menetelmä lehtipuumassan valkaisemiseksi
FI942198A0 (fi) Paperikoneen perälaatikko
FI925941A0 (fi) Paperikoneen kuivatusosa
FI933057A0 (fi) Klorfri process foer blekning av lignocellulosahaltig pappersmassa
BR9003070A (pt) Aparelhagem para a desidratacao de uma polpa
BR9305760A (pt) Processo para deslignificaçao de material lignocelulósico
DE4493351T1 (de) Papierherstellungsverfahren
FI953766A0 (fi) Menetelmä selluloosakuitujen ristiinliittämiseksi
DE59410028D1 (de) Schärmaschine
FI943096A0 (fi) Paperikoneen kuivatusosa

Legal Events

Date Code Title Description
EE Request for examination
FF Decision: intention to grant
FA11 Dismissal: dismissal - article 38, par. 2 of industrial property law