BRPI0716684A2 - processo de alvejamento para alvejar uma polpa - Google Patents

processo de alvejamento para alvejar uma polpa

Info

Publication number
BRPI0716684A2
BRPI0716684A2 BRPI0716684-2A2A BRPI0716684A BRPI0716684A2 BR PI0716684 A2 BRPI0716684 A2 BR PI0716684A2 BR PI0716684 A BRPI0716684 A BR PI0716684A BR PI0716684 A2 BRPI0716684 A2 BR PI0716684A2
Authority
BR
Brazil
Prior art keywords
bleach
pulp
bleaching process
bleaching
Prior art date
Application number
BRPI0716684-2A2A
Other languages
English (en)
Portuguese (pt)
Inventor
Caifang Yin
Original Assignee
Internac Paper Company
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 Internac Paper Company filed Critical Internac Paper Company
Publication of BRPI0716684A2 publication Critical patent/BRPI0716684A2/pt

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
    • D21C9/1042—Use of chelating agents
    • 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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BRPI0716684-2A2A 2006-11-15 2007-11-13 processo de alvejamento para alvejar uma polpa BRPI0716684A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/599,848 US20080110584A1 (en) 2006-11-15 2006-11-15 Bleaching process with at least one extraction stage
PCT/US2007/023771 WO2008060519A2 (en) 2006-11-15 2007-11-13 An improved bleaching process with at least one extraction stage

Publications (1)

Publication Number Publication Date
BRPI0716684A2 true BRPI0716684A2 (pt) 2013-09-24

Family

ID=39315128

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0716684-2A2A BRPI0716684A2 (pt) 2006-11-15 2007-11-13 processo de alvejamento para alvejar uma polpa

Country Status (5)

Country Link
US (1) US20080110584A1 (de)
EP (1) EP2082095A2 (de)
BR (1) BRPI0716684A2 (de)
CA (1) CA2669032C (de)
WO (1) WO2008060519A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8524037B2 (en) * 2010-02-01 2013-09-03 Canfor Pulp And Paper Sales Ltd. Continuous digestion of chip blends containing a western red cedar chip furnish
CN102061638B (zh) * 2010-11-12 2013-07-10 昆明理工大学 醋酸盐/过硫酸盐催化漂白纸浆的工艺
US11207863B2 (en) 2018-12-12 2021-12-28 Owens Corning Intellectual Capital, Llc Acoustic insulator
US11666199B2 (en) 2018-12-12 2023-06-06 Owens Corning Intellectual Capital, Llc Appliance with cellulose-based insulator
FI128968B (en) * 2020-03-31 2021-04-15 Chempolis Oy Peroxide bleaching of cellulose pulp

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347434A (en) * 1941-06-30 1944-04-25 Du Pont Stabilization of peracid solutions
US3251731A (en) * 1963-02-11 1966-05-17 Andrew J Gard Bleaching of wood pulp with a sequestering agent and hydrogen peroxide
GB1217833A (en) * 1967-01-16 1970-12-31 Electric Reduction Co Improved cellulosic pulp process
US3539445A (en) * 1967-08-04 1970-11-10 Ray I Thomas Reduction of iron content in bleaching fibrous cellulose
FR1604717A (de) * 1968-10-22 1972-01-24
SE324285B (de) * 1968-11-22 1970-05-25 T Norin
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
US4238281A (en) * 1979-04-30 1980-12-09 Canadian International Paper Company Simplified bleaching process
US4238282A (en) * 1979-07-23 1980-12-09 Nalco Chemical Company Chemical treatments in bleaching stages which increase pulp brightness
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
CA1249402A (en) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Multistage brightening of high yield and ultra high- yield wood pulps
US4826568A (en) * 1985-08-05 1989-05-02 Interox (Societe Anonyme) Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion
US4826567A (en) * 1985-08-05 1989-05-02 Interox (Societe Anonyme) Process for the delignification of cellulosic substances by pretreating with a complexing agent followed by hydrogen peroxide
GB8620222D0 (en) * 1986-08-20 1986-10-01 Abitibi Price Inc Peroxide bleaching
US4732650A (en) * 1986-09-15 1988-03-22 The Dow Chemical Company Bleaching of cellulosic pulps using hydrogen peroxide
US4675076A (en) * 1986-10-01 1987-06-23 Ppg Industries, Inc. Method for brightening pulp
US4946556A (en) * 1989-04-25 1990-08-07 Kamyr, Inc. Method of oxygen delignifying wood pulp with between stage washing
SE466061B (sv) * 1990-04-23 1991-12-09 Eka Nobel Ab Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne
US5352332A (en) * 1991-01-28 1994-10-04 Maples Gerald E Process for recycling bleach plant filtrate
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
FI93232C (fi) * 1993-03-03 1995-03-10 Ahlstroem Oy Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
US6010594A (en) * 1993-03-03 2000-01-04 Ahlstrom Machinery Corporation Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
EP0622491B2 (de) * 1993-04-20 2002-07-17 Eka Chemicals AB Verfahren zum Bleichen von Lignozellulose-enthaltendem Zellstoff
SE502706E (sv) * 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg
FI942341L (fi) * 1994-05-20 1995-11-21 Ahlstroem Oy Menetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla
US6136147A (en) * 1994-08-01 2000-10-24 Kimberly-Clark Worldwide, Inc. Method for applying debonding materials to a tissue
EP0858526A1 (de) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Verfahren zur vorbehandlung eines für peroxidbleichung bestimmten zellstoffes
US6706143B1 (en) * 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
SE507483C2 (sv) * 1996-10-21 1998-06-15 Hampshire Chemical Ab Avlägsnande av metalljoner genom extraktion med en kombination av en organofil komplexbildare och ett organiskt lösningsmedel vid framställning av pappersmassa
US5902454A (en) * 1996-12-13 1999-05-11 Ciba Specialty Chemicals Corporation Method of whitening lignin-containing paper pulps
NZ331438A (en) * 1997-09-16 2000-01-28 Ciba Sc Holding Ag A method of increasing the whiteness of paper by using a formulation containing a swellale layered silicate and an optical brightener 4,4-bis-(triazinylamino)-stilbene-2,2-disulphonic acid
DE69912128T2 (de) * 1998-04-17 2004-06-17 Alberta Research Council, Inc., Edmonton Verfahren zur herstellung lignocellulosehaltiger pulpe aus nicht holzartigem material
US6702921B2 (en) * 2001-05-01 2004-03-09 Ondeo Nalco Company Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent

Also Published As

Publication number Publication date
WO2008060519A3 (en) 2008-08-14
WO2008060519A2 (en) 2008-05-22
CA2669032C (en) 2013-03-19
EP2082095A2 (de) 2009-07-29
CA2669032A1 (en) 2008-05-22
US20080110584A1 (en) 2008-05-15

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2280 DE 16/09/2014.