FI93749C - Menetelmä mekaanisen massan valmistamiseksi - Google Patents

Menetelmä mekaanisen massan valmistamiseksi Download PDF

Info

Publication number
FI93749C
FI93749C FI881544A FI881544A FI93749C FI 93749 C FI93749 C FI 93749C FI 881544 A FI881544 A FI 881544A FI 881544 A FI881544 A FI 881544A FI 93749 C FI93749 C FI 93749C
Authority
FI
Finland
Prior art keywords
hydrogen peroxide
pulp
process according
temperature
sequestering agent
Prior art date
Application number
FI881544A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI881544A (fi
FI93749B (fi
FI881544A0 (fi
Inventor
Michel Devic
Jacques Kervennal
Jean-Pierre Schirmann
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 FI881544A0 publication Critical patent/FI881544A0/fi
Publication of FI881544A publication Critical patent/FI881544A/fi
Publication of FI93749B publication Critical patent/FI93749B/fi
Application granted granted Critical
Publication of FI93749C publication Critical patent/FI93749C/fi

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Dental Preparations (AREA)
  • Noodles (AREA)
  • Glass Compositions (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Seasonings (AREA)
FI881544A 1987-04-02 1988-03-31 Menetelmä mekaanisen massan valmistamiseksi FI93749C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8704844A FR2613388B1 (fr) 1987-04-02 1987-04-02 Procede de blanchiment de pates
FR8704844 1987-04-02

Publications (4)

Publication Number Publication Date
FI881544A0 FI881544A0 (fi) 1988-03-31
FI881544A FI881544A (fi) 1988-10-03
FI93749B FI93749B (fi) 1995-02-15
FI93749C true FI93749C (fi) 1995-05-26

Family

ID=9349862

Family Applications (1)

Application Number Title Priority Date Filing Date
FI881544A FI93749C (fi) 1987-04-02 1988-03-31 Menetelmä mekaanisen massan valmistamiseksi

Country Status (11)

Country Link
EP (1) EP0285530B1 (de)
JP (1) JPS63256786A (de)
AT (1) ATE84581T1 (de)
AU (1) AU606930B2 (de)
CA (1) CA1310797C (de)
DE (2) DE3877403T2 (de)
ES (1) ES2004846T3 (de)
FI (1) FI93749C (de)
FR (1) FR2613388B1 (de)
NO (1) NO173886C (de)
NZ (1) NZ224144A (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647641B1 (fr) * 1989-06-05 1992-01-17 Atochem Procede de fabrication de pulpes vegetales blanchies
ES2038097T5 (es) * 1989-06-06 2001-05-01 Eka Chemicals Ab Procedimiento para blanquear pastas papeleras que contienen lignocelulosa.
SE467006B (sv) 1989-06-06 1992-05-11 Eka Nobel Ab Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare
FR2659363B1 (fr) * 1990-03-07 1996-04-19 Atochem Procede de preparation de pates a haut rendement blanchies.
SE9001481L (sv) * 1990-04-23 1991-10-24 Eka Nobel Ab Reduktion av halogenorganiska foereningar i blekeriavlopp
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
FR2661431B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement.
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
ZA955290B (en) * 1994-07-11 1996-12-27 Ingersoll Rand Co Peroxide bleaching process for cellulosic and lignocellulosic material
JP4580343B2 (ja) * 2003-10-02 2010-11-10 アンドリッツ インコーポレーテッド リファイナーブローライン処理を伴うアルカリ過酸化物を用いた多段階メカニカルパルプ化方法
US8298373B2 (en) 2008-02-07 2012-10-30 University Of New Brunswick Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL202075A (de) * 1954-11-19 Fmc Corp
US3251731A (en) * 1963-02-11 1966-05-17 Andrew J Gard Bleaching of wood pulp with a sequestering agent and hydrogen peroxide
JPS5344563A (en) * 1976-10-05 1978-04-21 Ouchi Shinkou Kagaku Kougiyou Preparation of benzothiazolylsulfenamide
FI61215B (fi) * 1976-11-23 1982-02-26 Defibrator Ab Saett och anordning att kontinuerligt framstaella lignocellulosahaltiga fibermaterial

Also Published As

Publication number Publication date
EP0285530B1 (de) 1993-01-13
EP0285530A1 (de) 1988-10-05
ES2004846T3 (es) 1993-06-16
JPH0156197B2 (de) 1989-11-29
CA1310797C (fr) 1992-12-01
DE3877403T2 (de) 1993-05-19
ES2004846A4 (es) 1989-02-16
FI881544A (fi) 1988-10-03
DE3877403D1 (de) 1993-02-25
ATE84581T1 (de) 1993-01-15
FR2613388A1 (fr) 1988-10-07
FI93749B (fi) 1995-02-15
NO881404D0 (no) 1988-03-29
NZ224144A (en) 1989-07-27
AU1406788A (en) 1988-10-06
AU606930B2 (en) 1991-02-21
NO173886C (no) 1994-02-16
NO173886B (no) 1993-11-08
JPS63256786A (ja) 1988-10-24
FR2613388B1 (fr) 1990-05-04
FI881544A0 (fi) 1988-03-31
NO881404L (no) 1988-10-03
DE285530T1 (de) 1989-03-30

Similar Documents

Publication Publication Date Title
FI93749C (fi) Menetelmä mekaanisen massan valmistamiseksi
JPS6112994A (ja) 過酸化水素による機械パルプの漂白法
WO1997039179A1 (en) Method for bleaching of lignocellulosic fibers
WO2021168536A1 (en) Sulfuric acid composition and uses thereof
FI86443B (fi) Foerfarande foer blekning av lignocellulosamassor.
SI9300362A (en) Process for bleaching of chemical paper pulp
FI108549B (fi) Lignoselluloosamateriaalin valkaisu aktivoidulla hapella
FI99153C (fi) Menetelmä suursaantoisten paperimassojen vetyperoksidivalkaisuun
PT99980A (pt) Processo de pre-tratamento de materiais lignocelulosicos antes da obtencao de polpa de celulose de elevado rendimento com peroxido alcalino
FI73018C (fi) Foerfarande foer delignifierande blekning av cellulosamassa.
RU2747664C2 (ru) Способ отбеливания бумажной массы
FI96522B (fi) Menetelmä valkaistujen kemitermomekaanisten massojen valmistamiseksi
USH1690H (en) Process for bleaching kraft pulp
JPH0660474B2 (ja) 漂白高収率パルプの製造方法
JPH06505063A (ja) ケミカルペーパーパルプをさらす方法及びこの方法のクラフトパルプのさらしへの適用
JPS583074B2 (ja) パルプノ カサンカブツヒヨウハクホウ
JPH05195467A (ja) ケミカルペーパーパルプの脱リグニン化の選択性を改良するための方法
JP2010285698A (ja) Ｔｃｆ漂白方法
EP1278909A1 (de) Verfahren zur kontrolle der entlignifizierung und der bleichung einer zellstoffsuspension
JPH01207492A (ja) 紙パルプの製造方法
JPH06507683A (ja) ケミカルペーパーパルプの漂白および脱リグニンのための方法およびクラフトパルプおよびａｓａｍパルプの漂白および脱リグニンのための本方法の使用
JP3275271B2 (ja) 化学パルプの漂白方法
JPH06158573A (ja) 製紙用化学パルプの漂白方法
FI85726C (fi) Foerfarande foer delignifiering av cellulosamaterial.
JP2006283211A (ja) 化学パルプの漂白方法

Legal Events

Date Code Title Description
HC Name/ company changed in application

Owner name: ELF ATOCHEM S.A.

BB Publication of examined application
MM Patent lapsed

Owner name: ELF ATOCHEM S.A.