WO2008076268A3 - A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 - Google Patents

A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 Download PDF

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Publication number
WO2008076268A3
WO2008076268A3 PCT/US2007/025374 US2007025374W WO2008076268A3 WO 2008076268 A3 WO2008076268 A3 WO 2008076268A3 US 2007025374 W US2007025374 W US 2007025374W WO 2008076268 A3 WO2008076268 A3 WO 2008076268A3
Authority
WO
WIPO (PCT)
Prior art keywords
bleaching
pulp
stage bleaching
hardwood pulps
hardwood
Prior art date
Application number
PCT/US2007/025374
Other languages
French (fr)
Other versions
WO2008076268A9 (en
WO2008076268A2 (en
Inventor
Caifang Yin
Kent Witherspoon
Original Assignee
Int Paper Co
Caifang Yin
Kent Witherspoon
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 Int Paper Co, Caifang Yin, Kent Witherspoon filed Critical Int Paper Co
Priority to CN200780046787.3A priority Critical patent/CN101589192B/en
Priority to EP07862785A priority patent/EP2099967A2/en
Priority to CA2671876A priority patent/CA2671876C/en
Priority to BRPI0719412A priority patent/BRPI0719412B1/en
Publication of WO2008076268A2 publication Critical patent/WO2008076268A2/en
Publication of WO2008076268A9 publication Critical patent/WO2008076268A9/en
Publication of WO2008076268A3 publication Critical patent/WO2008076268A3/en

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage 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
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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

Abstract

This invention relates to an improved bleaching process for bleaching pulp comprising at least one bleaching stage which comprises treating a hardwood pulp with a bleaching agent comprising CIO2 in the presence of a weak base such as, for example, Mg(OH)2 preferably at pH from about 3.5 to about 6.5. The invention is also relates a bleaching process for bleaching pulp having two or more bleaching stages, at least one of which and preferably two of which comprises treating a pulp with a bleaching agent comprising ClO2 in the presence of a weak base such as, for example, Mg(OH)2 preferably at pH from about 3.5 to about 6.5.
PCT/US2007/025374 2006-12-18 2007-12-12 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 WO2008076268A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN200780046787.3A CN101589192B (en) 2006-12-18 2007-12-12 A process in a (D) stage bleaching of hardwood pulps in a presence of Mg(OH)2
EP07862785A EP2099967A2 (en) 2006-12-18 2007-12-12 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2
CA2671876A CA2671876C (en) 2006-12-18 2007-12-12 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2
BRPI0719412A BRPI0719412B1 (en) 2006-12-18 2007-12-12 bleaching process to bleach pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/640,828 2006-12-18
US11/640,828 US7976677B2 (en) 2006-12-18 2006-12-18 Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base

Publications (3)

Publication Number Publication Date
WO2008076268A2 WO2008076268A2 (en) 2008-06-26
WO2008076268A9 WO2008076268A9 (en) 2008-08-07
WO2008076268A3 true WO2008076268A3 (en) 2008-09-18

Family

ID=39315129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/025374 WO2008076268A2 (en) 2006-12-18 2007-12-12 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2

Country Status (7)

Country Link
US (2) US7976677B2 (en)
EP (1) EP2099967A2 (en)
CN (2) CN103498376A (en)
BR (1) BRPI0719412B1 (en)
CA (1) CA2671876C (en)
RU (1) RU2456395C2 (en)
WO (1) WO2008076268A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0520253B1 (en) * 2005-05-04 2016-09-06 Novozymes As methods for delignifying and / or bleaching a pulp, and for treating tailings and / or sludge water
CA2719500A1 (en) * 2008-03-25 2009-10-01 University Of New Brunswick Process of chlorine dioxide bleaching of chemical pulps using magnesium hydroxide or magnesium oxide
CN104088186B (en) * 2014-06-30 2016-09-21 四川理工学院 A kind of employing D1epD2technique makes the method for Eupatorium cannabinum L. (Eupatorium coelestinum L.) bleached pulp
CN105040500A (en) * 2015-09-06 2015-11-11 长沙理工大学 Elemental chlorine free bleaching method of reed pulp

Citations (7)

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Publication number Priority date Publication date Assignee Title
WO1988001661A1 (en) * 1986-08-28 1988-03-10 James River-Norwalk, Inc. Pulp bleaching process
EP0716182A2 (en) * 1994-11-23 1996-06-12 Alcell Technologies Inc. Chlorine-free organosolv pulps
WO2002075046A1 (en) * 2001-03-20 2002-09-26 Metso Paper, Inc Bleaching of pulp with chlorine dioxide
WO2003074780A1 (en) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp
US20040112555A1 (en) * 2002-12-03 2004-06-17 Jeffrey Tolan Bleaching stage using xylanase with hydrogen peroxide, peracids, or a combination thereof
WO2004079087A1 (en) * 2003-03-07 2004-09-16 Kvaerner Pulping Ab Bleaching of cellulose pulp in a first chlorine dioxide bleaching step
WO2006121634A2 (en) * 2005-05-09 2006-11-16 Amidon Thomas E New product and processes from an integrated forest biorefinery

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CA756967A (en) * 1967-04-18 Anglo Paper Products Neutral chlorine dioxide pulp bleaching process
US2639987A (en) 1947-07-09 1953-05-26 Ass Pulp & Paper Mills Two-stage pulping process
GB815247A (en) * 1955-07-19 1959-06-24 Columbia Cellulose Company Ltd Bleaching woob pulps
SE363138B (en) 1968-06-13 1974-01-07 Air Liquide Sa Etude Exploit P
USRE28777E (en) * 1969-02-06 1976-04-20 Ethyl Corporation Refining of vegetable matter and delignification of the refined matter with chlorine dioxide
GB1505076A (en) 1974-06-11 1978-03-22 Canadian Ind Strenghening of mechanical pulp by chemical treatment
US4859283A (en) 1988-04-15 1989-08-22 E. I. Du Pont De Nemours And Company Magnesium ions in a process for alkaline peroxide treatment of nonwoody lignocellulosic substrates
US5179021A (en) 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment
US5091054A (en) 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
US5441603A (en) 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
EP0763622A3 (en) 1990-08-17 1999-08-25 Alcell Technologies Inc. Continuous solvent pulping and washing processes and apparatus
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE502706E (en) 1994-04-05 1999-06-18 Mo Och Domsjoe Ab Preparation of bleached cellulose pulp by bleaching with chlorine dioxide and treatment of complexing agents in the same step
RU2075566C1 (en) * 1994-08-04 1997-03-20 Коми научный центр Уральского отделения РАН Method of whitening sulfate cellulose
US5641385A (en) 1995-01-17 1997-06-24 The Dow Chemical Company Use of ethyleneamine for washing pulp containing lignin
US6056853A (en) 1996-06-13 2000-05-02 Orica Australia Pty. Ltd. Process for peroxide bleaching of pulp using MgO particles
US6569284B1 (en) 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage
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
CA2321683C (en) * 1998-03-16 2005-09-27 Pulp And Paper Research Institute Of Canada Additives to chlorine dioxide bleaching
US6245196B1 (en) 1999-02-02 2001-06-12 Praxair Technology, Inc. Method and apparatus for pulp yield enhancement
US7052578B2 (en) 2000-01-28 2006-05-30 Martin Marietta Magnesia Specialties, Inc. Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
FI108234B (en) 2000-02-28 2001-12-14 Chempolis Oy Process for making pulp
US6881299B2 (en) 2001-05-16 2005-04-19 North American Paper Corporation Refiner bleaching with magnesium oxide and hydrogen peroxide
US6743332B2 (en) 2001-05-16 2004-06-01 Weyerhaeuser Company High temperature peroxide bleaching of mechanical pulps
JP2004124265A (en) * 2002-03-28 2004-04-22 Nippon Paper Industries Co Ltd Method for improving chlorine dioxide bleaching efficiency
SE521780C2 (en) * 2003-01-31 2003-12-09 Kvaerner Pulping Tech Method for bleaching cellulose pulp and bleaching line for this
US8317975B2 (en) * 2004-04-20 2012-11-27 The Research Foundation Of The State University Of New York Product and processes from an integrated forest biorefinery

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001661A1 (en) * 1986-08-28 1988-03-10 James River-Norwalk, Inc. Pulp bleaching process
EP0716182A2 (en) * 1994-11-23 1996-06-12 Alcell Technologies Inc. Chlorine-free organosolv pulps
WO2002075046A1 (en) * 2001-03-20 2002-09-26 Metso Paper, Inc Bleaching of pulp with chlorine dioxide
WO2003074780A1 (en) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp
US20040112555A1 (en) * 2002-12-03 2004-06-17 Jeffrey Tolan Bleaching stage using xylanase with hydrogen peroxide, peracids, or a combination thereof
WO2004079087A1 (en) * 2003-03-07 2004-09-16 Kvaerner Pulping Ab Bleaching of cellulose pulp in a first chlorine dioxide bleaching step
WO2006121634A2 (en) * 2005-05-09 2006-11-16 Amidon Thomas E New product and processes from an integrated forest biorefinery

Also Published As

Publication number Publication date
WO2008076268A9 (en) 2008-08-07
CN101589192B (en) 2013-07-31
BRPI0719412B1 (en) 2017-04-04
US7976677B2 (en) 2011-07-12
WO2008076268A2 (en) 2008-06-26
RU2009123743A (en) 2010-12-27
US20080142175A1 (en) 2008-06-19
CA2671876C (en) 2013-01-29
US20110240238A1 (en) 2011-10-06
CA2671876A1 (en) 2008-06-26
CN101589192A (en) 2009-11-25
RU2456395C2 (en) 2012-07-20
BRPI0719412A2 (en) 2014-02-11
EP2099967A2 (en) 2009-09-16
CN103498376A (en) 2014-01-08

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