NZ229902A - Manufacture of bleached chemithermomechanical pulp; sulphite treatment followed by hydrogen peroxide bleaching with no material removed during the process - Google Patents

Manufacture of bleached chemithermomechanical pulp; sulphite treatment followed by hydrogen peroxide bleaching with no material removed during the process

Info

Publication number
NZ229902A
NZ229902A NZ229902A NZ22990289A NZ229902A NZ 229902 A NZ229902 A NZ 229902A NZ 229902 A NZ229902 A NZ 229902A NZ 22990289 A NZ22990289 A NZ 22990289A NZ 229902 A NZ229902 A NZ 229902A
Authority
NZ
New Zealand
Prior art keywords
manufacture
hydrogen peroxide
removed during
material removed
peroxide bleaching
Prior art date
Application number
NZ229902A
Inventor
Michel Devic
Original Assignee
Atochem
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 filed Critical Atochem
Publication of NZ229902A publication Critical patent/NZ229902A/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Glass Compositions (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Seasonings (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Process for manufacturing bleached CTMP pulps comprising a treatment of the lignocellulosic stock with sulphite at a temperature of at least 100 DEG C under saturated steam pressure, and a bleaching operation with the aid of H2O2 in alkaline medium without removal of solid or liquid matter from the pulp from the start of the treatment until the end of the bleaching.
NZ229902A 1988-07-12 1989-07-11 Manufacture of bleached chemithermomechanical pulp; sulphite treatment followed by hydrogen peroxide bleaching with no material removed during the process NZ229902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8809703A FR2634233B1 (en) 1988-07-12 1988-07-12 PROCESS FOR PRODUCING BLANCHED CHEMICOTHERMOMECHANICAL PASTES

Publications (1)

Publication Number Publication Date
NZ229902A true NZ229902A (en) 1991-09-25

Family

ID=9368520

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ229902A NZ229902A (en) 1988-07-12 1989-07-11 Manufacture of bleached chemithermomechanical pulp; sulphite treatment followed by hydrogen peroxide bleaching with no material removed during the process

Country Status (12)

Country Link
EP (1) EP0351330B1 (en)
JP (1) JPH0268377A (en)
AT (1) ATE171741T1 (en)
AU (1) AU616541B2 (en)
CA (1) CA1335406C (en)
DE (2) DE351330T1 (en)
ES (1) ES2012324T3 (en)
FI (1) FI96522C (en)
FR (1) FR2634233B1 (en)
NO (1) NO176726C (en)
NZ (1) NZ229902A (en)
PT (1) PT91128B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615874B1 (en) * 1987-05-25 1992-02-21 Atochem PROCESS FOR THE PREPARATION OF CHEMICOTHERMOMECHANICAL PASTES
FR2675518B1 (en) * 1991-04-17 1996-10-18 Atochem PROCESS FOR THE PREPARATION OF HIGH YIELD AND BLEACHED PAPER PULP FROM WOOD CHIPS.
US20030062138A1 (en) * 2001-05-09 2003-04-03 Hache Maurice Joseph Albert Method for brightening mechanical pulps
JP4501329B2 (en) * 2002-03-29 2010-07-14 日本製紙株式会社 Coated paper for gravure printing
ES2447870T3 (en) * 2007-04-24 2014-03-13 Basf Se Procedure for manufacturing bleached wood particles and materials derived from light to white wood
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
US20100224333A1 (en) * 2009-03-09 2010-09-09 Prasad Duggirala Method and chemical composition to improve efficiency of mechanical pulp
EP2924166A1 (en) * 2014-03-25 2015-09-30 Basf Se Method for the manufacture of bleached wood fibre

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834808C (en) * 1950-08-31 1952-03-24 Degussa Process for bleaching mechanically produced fibrous materials that are difficult to bleach, especially wood pulp
US3284283A (en) * 1964-02-17 1966-11-08 Fmc Corp Production of wood pulps including treatment of cellulosic fibers with bisulfite ion followed by alkali metal borohydride
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
CA1212505A (en) * 1984-07-17 1986-10-14 Rudy Vit Method, process and apparatus for converting wood, wood residue and or biomass into pulp
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp
FR2615874B1 (en) * 1987-05-25 1992-02-21 Atochem PROCESS FOR THE PREPARATION OF CHEMICOTHERMOMECHANICAL PASTES
SE460124B (en) * 1988-09-14 1989-09-11 Sunds Defibrator SET FOR PREPARATION OF CHEMICAL MECHANICAL MASS OF LEAVES

Also Published As

Publication number Publication date
DE351330T1 (en) 1990-06-13
DE68928822T2 (en) 1999-05-27
AU616541B2 (en) 1991-10-31
NO176726B (en) 1995-02-06
EP0351330A1 (en) 1990-01-17
FR2634233B1 (en) 1995-04-14
PT91128A (en) 1990-02-08
ES2012324T3 (en) 1998-11-16
AU3799989A (en) 1990-01-18
FI96522B (en) 1996-03-29
FR2634233A1 (en) 1990-01-19
DE68928822D1 (en) 1998-11-05
ES2012324A4 (en) 1990-03-16
JPH0268377A (en) 1990-03-07
CA1335406C (en) 1995-05-02
NO892805L (en) 1990-01-15
FI96522C (en) 1996-07-10
PT91128B (en) 1994-12-30
ATE171741T1 (en) 1998-10-15
NO176726C (en) 1995-05-16
FI893372A0 (en) 1989-07-11
JPH0250236B2 (en) 1990-11-01
FI893372L (en) 1990-01-13
NO892805D0 (en) 1989-07-06
EP0351330B1 (en) 1998-09-30

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