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ES2051531T3 - Procedimiento para el blanqueo y la deslignificacion sin cloro de un material celulosico. - Google Patents

Procedimiento para el blanqueo y la deslignificacion sin cloro de un material celulosico.

Info

Publication number
ES2051531T3
ES2051531T3 ES91101890T ES91101890T ES2051531T3 ES 2051531 T3 ES2051531 T3 ES 2051531T3 ES 91101890 T ES91101890 T ES 91101890T ES 91101890 T ES91101890 T ES 91101890T ES 2051531 T3 ES2051531 T3 ES 2051531T3
Authority
ES
Spain
Prior art keywords
chlorine
lignification
procedure
cellulosic material
free bleaching
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.)
Expired - Lifetime
Application number
ES91101890T
Other languages
English (en)
Inventor
Werner Dr Sturm
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.)
Evonik Operations GmbH
Original Assignee
SKW Trostberg AG
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 SKW Trostberg AG filed Critical SKW Trostberg AG
Application granted granted Critical
Publication of ES2051531T3 publication Critical patent/ES2051531T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/147—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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cereal-Derived Products (AREA)
  • Gyroscopes (AREA)
  • Eye Examination Apparatus (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

PARA LA DECOLORACION SIN CLORO Y LA DESLIGNIFICACION DE CELULOSA, TRATADA PREVIAMENTE CON OXIGENO Y PEROXIDO O CON OXIGENO Y OZONO, SE LLEVA A CABO UN TRATAMIENTO EN DOS ETAPAS CON PEROXIDO, ACTIVADO CON CIANAMIDA Y/O SALES DE CIANAMIDA. DE ESTE MODO, CON ESCASOS MEDIOS TECNICOS Y SIN AYUDA DE SUSTANCIAS QUE CONTENGAN CLORO, PUEDEN OBTENERSE CELULOSAS CON ELEVADOS GRADOS DE BLANCURA.
ES91101890T 1990-02-13 1991-02-11 Procedimiento para el blanqueo y la deslignificacion sin cloro de un material celulosico. Expired - Lifetime ES2051531T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4004364A DE4004364A1 (de) 1990-02-13 1990-02-13 Verfahren zur chlorfreien bleiche und delignifizierung von zellstoff

Publications (1)

Publication Number Publication Date
ES2051531T3 true ES2051531T3 (es) 1994-06-16

Family

ID=6400030

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91101890T Expired - Lifetime ES2051531T3 (es) 1990-02-13 1991-02-11 Procedimiento para el blanqueo y la deslignificacion sin cloro de un material celulosico.

Country Status (7)

Country Link
EP (1) EP0442425B1 (es)
AT (1) ATE103649T1 (es)
CA (1) CA2036173C (es)
DE (2) DE4004364A1 (es)
ES (1) ES2051531T3 (es)
FI (1) FI910703L (es)
NO (1) NO176329C (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031597A1 (de) * 1990-10-05 1992-04-09 Sueddeutsche Kalkstickstoff Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff
JP2002517173A (ja) * 1991-01-03 2002-06-11 ユニオン キャンプ パテント ホウルディング インコーポレイテッド 塩素を使用しないリグノセルロースパルプの漂白法
DE4138006A1 (de) * 1991-11-19 1993-05-27 Degussa Verfahren zur verbesserung des weissgehaltes bei der peroxidbleiche von zellstoffen durch den zusatz von cyanaten
US5620563A (en) * 1994-10-31 1997-04-15 Pulp Paper Res Inst Process for delignification and bleaching of chemical wood pulps with hydrogen peroxide and a dicyandiamide activator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196043A (en) * 1970-12-21 1980-04-01 Scott Paper Company Kraft pulp bleaching and recovery process
DE3544398A1 (de) * 1985-12-16 1987-06-19 Sueddeutsche Kalkstickstoff Verfahren zur bleiche und delignifizierung von zellstoffhaltigen produkten
DE3714107A1 (de) * 1987-04-28 1988-11-10 Sueddeutsche Kalkstickstoff Verfahren zur entfernung von rest-wasserstoffperoxid aus waessrigen loesungen
DE3802401A1 (de) * 1988-01-28 1989-08-03 Degussa Verfahren zur herstellung von halbgebleichtem kraftzellstoff

Also Published As

Publication number Publication date
EP0442425B1 (de) 1994-03-30
FI910703A7 (fi) 1991-08-14
CA2036173A1 (en) 1991-08-14
NO910458D0 (no) 1991-02-06
FI910703A0 (fi) 1991-02-13
FI910703L (fi) 1991-08-14
NO910458L (no) 1991-08-14
CA2036173C (en) 1996-01-23
ATE103649T1 (de) 1994-04-15
NO176329C (no) 1995-03-15
DE4004364A1 (de) 1991-08-14
DE59101249D1 (de) 1994-05-05
NO176329B (no) 1994-12-05
EP0442425A1 (de) 1991-08-21
DE4004364C2 (es) 1992-11-19

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