[go: up one dir, main page]

FI921671A0 - FOERFARANDE FOER TILLVERKNING AV BLEKT PAPPERSMASSA MED STOR AOTKOMST. - Google Patents

FOERFARANDE FOER TILLVERKNING AV BLEKT PAPPERSMASSA MED STOR AOTKOMST.

Info

Publication number
FI921671A0
FI921671A0 FI921671A FI921671A FI921671A0 FI 921671 A0 FI921671 A0 FI 921671A0 FI 921671 A FI921671 A FI 921671A FI 921671 A FI921671 A FI 921671A FI 921671 A0 FI921671 A0 FI 921671A0
Authority
FI
Finland
Prior art keywords
blekt
aotkomst
pappersmassa
foerfarande foer
foer tillverkning
Prior art date
Application number
FI921671A
Other languages
Finnish (fi)
Other versions
FI921671A (en
Inventor
Michel Devic
Original Assignee
Atochem Elf Sa
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 Atochem Elf Sa filed Critical Atochem Elf Sa
Publication of FI921671A0 publication Critical patent/FI921671A0/en
Publication of FI921671A publication Critical patent/FI921671A/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
    • 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

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Electroluminescent Light Sources (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

Manufacture of high-yield paper pulp from wood chips. The process consists in successively treating the chips, before grinding, with a solution containing at least one reducing agent, and then with an alkaline hydrogen peroxide solution. Application to the manufacture of paper pulp with a high degree of whiteness and good mechanical characteristics.
FI921671A 1991-04-17 1992-04-14 FOERFARANDE FOER TILLVERKNING AV BLEKT PAPPERSMASSA MED STOR AOTKOMST FI921671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9104737A FR2675518B1 (en) 1991-04-17 1991-04-17 PROCESS FOR THE PREPARATION OF HIGH YIELD AND BLEACHED PAPER PULP FROM WOOD CHIPS.

Publications (2)

Publication Number Publication Date
FI921671A0 true FI921671A0 (en) 1992-04-14
FI921671A FI921671A (en) 1992-10-18

Family

ID=9411959

Family Applications (1)

Application Number Title Priority Date Filing Date
FI921671A FI921671A (en) 1991-04-17 1992-04-14 FOERFARANDE FOER TILLVERKNING AV BLEKT PAPPERSMASSA MED STOR AOTKOMST

Country Status (12)

Country Link
EP (1) EP0509905B1 (en)
JP (1) JP2588495B2 (en)
AT (1) ATE140283T1 (en)
AU (1) AU650962B2 (en)
CA (1) CA2066316C (en)
DE (1) DE69212051T2 (en)
ES (1) ES2089436T3 (en)
FI (1) FI921671A (en)
FR (1) FR2675518B1 (en)
IE (1) IE75202B1 (en)
NO (1) NO300225B1 (en)
NZ (1) NZ242356A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1095184B1 (en) * 1998-04-17 2003-10-15 Alberta Research Council, Inc. Method of producing lignocellulosic pulp from non-woody species
JP4738662B2 (en) * 2001-08-03 2011-08-03 日本製紙株式会社 Newspaper
JP4799774B2 (en) * 2001-08-03 2011-10-26 日本製紙株式会社 Printing paper
JP4501329B2 (en) * 2002-03-29 2010-07-14 日本製紙株式会社 Coated paper for gravure printing
JP2006123982A (en) * 2004-10-29 2006-05-18 Kyoraku Co Ltd Thin pulp molded product
CN100357517C (en) * 2005-10-14 2007-12-26 山东轻工业学院 Pretreatment liquid of cotton rod boiling
KR20110123184A (en) 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 Method and system for producing high alpha dissolving pulp
CN103334328A (en) * 2013-06-17 2013-10-02 中国林业科学研究院林产化学工业研究所 Method for preparing bleached pulp by using eucalyptus wood chips
CN103422380B (en) * 2013-08-15 2015-11-18 齐鲁工业大学 A kind of method of needlebush high yield cooking
EP2924166A1 (en) 2014-03-25 2015-09-30 Basf Se Method for the manufacture of bleached wood fibre
CN103978533B (en) * 2014-06-09 2016-04-06 山东轻工职业学院 A kind of bleaching process of raffia
CN109183495B (en) * 2018-09-26 2020-12-25 湖北夷盟包装材料有限公司 Preparation method of high-transparency transparent paper using bismuth-containing material
WO2024133473A1 (en) * 2022-12-21 2024-06-27 Billerud Aktiebolag (Publ) Preparation of maple wood for ctmp production

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE416481B (en) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab METHOD AND DEVICE FOR TREATMENT OF WOOD TIP FOR REMOVAL OF HEAVY METALS AND RESIN
JPS5917240B2 (en) * 1980-05-30 1984-04-20 三菱瓦斯化学株式会社 Peroxide labeling method for mechanical pulp
AU545847B2 (en) * 1981-02-11 1985-08-01 Mead Corporation, The Production of chemimechanical pump
US4486267A (en) * 1983-11-14 1984-12-04 Mead Corporation Chemithermomechanical pulping process employing separate alkali and sulfite treatments
US5002635A (en) * 1985-09-20 1991-03-26 Scott Paper Company Method for producing pulp using pre-treatment with stabilizers and refining
FR2634233B1 (en) * 1988-07-12 1995-04-14 Atochem PROCESS FOR PRODUCING BLANCHED CHEMICOTHERMOMECHANICAL PASTES
FR2659363B1 (en) * 1990-03-07 1996-04-19 Atochem PROCESS FOR THE PREPARATION OF HIGHLY YIELDED PASTA.

Also Published As

Publication number Publication date
IE75202B1 (en) 1997-08-27
IE921176A1 (en) 1992-10-21
CA2066316C (en) 1999-09-28
JP2588495B2 (en) 1997-03-05
DE69212051T2 (en) 1997-01-23
NZ242356A (en) 1994-06-27
AU1489792A (en) 1992-10-22
FR2675518B1 (en) 1996-10-18
NO300225B1 (en) 1997-04-28
ES2089436T3 (en) 1996-10-01
EP0509905B1 (en) 1996-07-10
JPH06220788A (en) 1994-08-09
EP0509905A1 (en) 1992-10-21
DE69212051D1 (en) 1996-08-14
ATE140283T1 (en) 1996-07-15
NO921335L (en) 1992-10-19
CA2066316A1 (en) 1992-10-18
NO921335D0 (en) 1992-04-06
FR2675518A1 (en) 1992-10-23
AU650962B2 (en) 1994-07-07
FI921671A (en) 1992-10-18

Similar Documents

Publication Publication Date Title
FI921671A0 (en) FOERFARANDE FOER TILLVERKNING AV BLEKT PAPPERSMASSA MED STOR AOTKOMST.
ES2094465T3 (en) PROCEDURE FOR THE WHITENING OF A CHEMICAL PAPER PULP.
FI884267A (en) Process for treating pulp with ozone and reactor for use of the process
HU9200832D0 (en) Process for plant-whitening in a dry surrounding
FI865100A0 (en) FOERFARANDE FOER BLEKNING OCH DELIGNIFIERING AV CELLULOSAHALTIGA PRODUKTER.
AU1406788A (en) Pulp bleaching process
FI99152B (en) With hydrogen peroxide enhanced oxygen delignification
CA2137450A1 (en) Bleaching recycled pulp with ozone and hydrogen peroxide
YU23892A (en) PROCESS FOR BLEACHING CHEMICAL PAPER PAPER AND APPLICATION OF THIS PROCEDURE FOR BLEACHING KRAFT PULP
AU565124B2 (en) Hypochlorite treatment of chemical paper pulps
FI853492L (en) FOERFARANDE FOER DELIGNIFIERING AV SULFATCELLULOSER.
NZ217001A (en) Delignification using acid and hydrogen peroxide
EP0377981A3 (en) Process for improved alkaline oxidative delignification of cellulose pulp
FI864411A0 (en) FOERFARANDE FOER BLEKNING AV KEMISKA PAPPERSMASSOR.
NZ217002A (en) Delignification using acid and hydrogen peroxide
MY103876A (en) Improved alkaline peroxide treatment of nonwoody lignocellulosic substrates
FR2426769A2 (en) Paper pulp mfr. by mechanical-chemical treatment of cellulose - with intermediate treatment by oxidising agent e.g. sodium hypochlorite