DE285530T1 - METHOD FOR BLEACHING CELLULAR. - Google Patents

METHOD FOR BLEACHING CELLULAR.

Info

Publication number
DE285530T1
DE285530T1 DE198888420102T DE88420102T DE285530T1 DE 285530 T1 DE285530 T1 DE 285530T1 DE 198888420102 T DE198888420102 T DE 198888420102T DE 88420102 T DE88420102 T DE 88420102T DE 285530 T1 DE285530 T1 DE 285530T1
Authority
DE
Germany
Prior art keywords
bleaching
cellular
action
temperature
mechanical
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
DE198888420102T
Other languages
German (de)
Inventor
Michel F-69110-Sainte -Foy-Les-Lyon Fr Devic
Jacques F-69005-Lyon Fr Kervennal
Jean-Pierre F-69600-Oullins Fr Schirmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema France SA
Original Assignee
Atochem 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 SA filed Critical Atochem SA
Publication of DE285530T1 publication Critical patent/DE285530T1/en
Pending legal-status Critical Current

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)
  • Dental Preparations (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Glass Compositions (AREA)
  • Seasonings (AREA)
  • Noodles (AREA)

Abstract

Bleaching of pulps of mechanical origin in which the pulp is treated with a metal-complexing or sequestering agent and is then washed with an efficiency higher than 95 % before being subjected to the action of hydrogen peroxide at a temperature above 100 DEG C and not exceeding 250 DEG C at the pressure of steam at the said temperature for 1 to 30 minutes, not conjointly with a mechanical beating action.
DE198888420102T 1987-04-02 1988-03-29 METHOD FOR BLEACHING CELLULAR. Pending DE285530T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8704844A FR2613388B1 (en) 1987-04-02 1987-04-02 PROCESS FOR BLEACHING PASTA

Publications (1)

Publication Number Publication Date
DE285530T1 true DE285530T1 (en) 1989-03-30

Family

ID=9349862

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8888420102T Expired - Fee Related DE3877403T2 (en) 1987-04-02 1988-03-29 METHOD FOR BLEACHING CELLULAR MATERIALS.
DE198888420102T Pending DE285530T1 (en) 1987-04-02 1988-03-29 METHOD FOR BLEACHING CELLULAR.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8888420102T Expired - Fee Related DE3877403T2 (en) 1987-04-02 1988-03-29 METHOD FOR BLEACHING CELLULAR MATERIALS.

Country Status (11)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647641B1 (en) * 1989-06-05 1992-01-17 Atochem PROCESS FOR THE MANUFACTURE OF BLEACHED VEGETABLE PULPES
SE467006B (en) 1989-06-06 1992-05-11 Eka Nobel Ab Bleaching chemical pulp with peroxide, with the pulp first being treated with a sequestering agent
ATE97179T1 (en) * 1989-06-06 1993-11-15 Eka Nobel Ab PROCESS FOR BLEACHING LIGNOCELLULOSE CONTAINING PULP.
FR2659363B1 (en) * 1990-03-07 1996-04-19 Atochem PROCESS FOR THE PREPARATION OF HIGHLY YIELDED PASTA.
SE466061B (en) * 1990-04-23 1991-12-09 Eka Nobel Ab Bleaching of chemical pulp by treatment with first a complexing agent and then a peroxide containing substance
SE9001481L (en) * 1990-04-23 1991-10-24 Eka Nobel Ab REDUCTION OF HALOGEN ORGANIC SUBSTANCES IN BLEACHING WASTE
FR2661431B1 (en) * 1990-04-30 1992-07-17 Atochem HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.
FR2661430B1 (en) * 1990-04-30 1992-07-17 Atochem HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.
SE468355B (en) * 1991-04-30 1992-12-21 Eka Nobel Ab CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE
ZA955290B (en) * 1994-07-11 1996-12-27 Ingersoll Rand Co Peroxide bleaching process for cellulosic and lignocellulosic material
SE0950616L (en) * 2003-10-02 2009-08-27 Andritz Inc Multi-stage production of mechanical pulp with AP through blast line treatment with refiner
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 (en) * 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 (en) * 1976-11-23 1982-02-26 Defibrator Ab SAFETY RANGE OF CONTAINER FRAMSTAELLA LIGNOCELLULOSAHALTIGA FIBERMATERIAL

Also Published As

Publication number Publication date
ATE84581T1 (en) 1993-01-15
AU1406788A (en) 1988-10-06
NO173886B (en) 1993-11-08
NO881404L (en) 1988-10-03
ES2004846A4 (en) 1989-02-16
FR2613388B1 (en) 1990-05-04
FI93749B (en) 1995-02-15
ES2004846T3 (en) 1993-06-16
EP0285530A1 (en) 1988-10-05
DE3877403D1 (en) 1993-02-25
FI93749C (en) 1995-05-26
DE3877403T2 (en) 1993-05-19
JPS63256786A (en) 1988-10-24
FI881544A (en) 1988-10-03
FR2613388A1 (en) 1988-10-07
AU606930B2 (en) 1991-02-21
FI881544A0 (en) 1988-03-31
NZ224144A (en) 1989-07-27
NO881404D0 (en) 1988-03-29
CA1310797C (en) 1992-12-01
EP0285530B1 (en) 1993-01-13
NO173886C (en) 1994-02-16
JPH0156197B2 (en) 1989-11-29

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