ES2004846T3 - PROCEDURE FOR PASTA BLEACHING. - Google Patents

PROCEDURE FOR PASTA BLEACHING.

Info

Publication number
ES2004846T3
ES2004846T3 ES198888420102T ES88420102T ES2004846T3 ES 2004846 T3 ES2004846 T3 ES 2004846T3 ES 198888420102 T ES198888420102 T ES 198888420102T ES 88420102 T ES88420102 T ES 88420102T ES 2004846 T3 ES2004846 T3 ES 2004846T3
Authority
ES
Spain
Prior art keywords
pasta
bleaching
procedure
degrees
action
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
ES198888420102T
Other languages
Spanish (es)
Other versions
ES2004846A4 (en
Inventor
Michel Devic
Jacques Kervennal
Jean-Pierre 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
Elf 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 Elf Atochem SA filed Critical Elf Atochem SA
Publication of ES2004846A4 publication Critical patent/ES2004846A4/en
Application granted granted Critical
Publication of ES2004846T3 publication Critical patent/ES2004846T3/en
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
    • D21C9/1005—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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Glass Compositions (AREA)
  • Noodles (AREA)
  • Seasonings (AREA)

Abstract

BLANQUEADO DE PASTAS DE ORIGEN MECANICO, EN EL QUE LA PASTA SE TRATA CON AYUDA DE UN AGENTE COMPLEJANTE O SECUESTRANTE DE METALES, DESPUES LAVADA CON UNA EFICACIA SUPERIOR AL 95 %, ANTES DE SER SOMETIDA A LA ACCION DEL PEROXIDO DE HIDROGENO A TEMPERATURA SUPERIOR A 100 (GRADOS) C Y COMO MUCHO IGUAL A 250 (GRADOS) C A LA PRESION DEL VAPOR DE AGUA A DICHA TEMPERATURA DURANTE 1-30 MINUTOS, NO CONJUNTAMENTE CON UNA ACCION DE DESFIBRAJE NECANICO.BLEACHING OF MECHANICAL PASTES, IN WHICH THE PASTA IS TREATED WITH THE HELP OF A COMPLEXING OR METAL SEQUESTERING AGENT, AFTER WASHING WITH AN EFFICIENCY OVER 95%, BEFORE BEING SUBMITTED TO THE ACTION OF HYDROGEN PEROXIDE AT SUPERIOR TEMPERATURE 100 (DEGREES) C AND AS MUCH EQUAL TO 250 (DEGREES) C THE WATER VAPOR PRESSURE AT SUCH TEMPERATURE FOR 1-30 MINUTES, NOT IN CONJUNCTION WITH A NECANIC DEFIBRATION ACTION.

ES198888420102T 1987-04-02 1988-03-29 PROCEDURE FOR PASTA BLEACHING. Expired - Lifetime ES2004846T3 (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 (2)

Publication Number Publication Date
ES2004846A4 ES2004846A4 (en) 1989-02-16
ES2004846T3 true ES2004846T3 (en) 1993-06-16

Family

ID=9349862

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888420102T Expired - Lifetime ES2004846T3 (en) 1987-04-02 1988-03-29 PROCEDURE FOR PASTA BLEACHING.

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) DE285530T1 (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
ATE97179T1 (en) * 1989-06-06 1993-11-15 Eka Nobel Ab PROCESS FOR BLEACHING LIGNOCELLULOSE CONTAINING PULP.
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
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
FR2661430B1 (en) * 1990-04-30 1992-07-17 Atochem HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.
FR2661431B1 (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
BR0318520A (en) * 2003-10-02 2006-09-12 Andritz Inc multistage mechanical pulping ap with refiner blowing line treatment
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
GB1590704A (en) * 1976-11-23 1981-06-10 Defibrator Ab Method end device for the continuous production of pulp from fibrous lignocellulosic materials

Also Published As

Publication number Publication date
NO173886B (en) 1993-11-08
JPH0156197B2 (en) 1989-11-29
NO173886C (en) 1994-02-16
DE3877403D1 (en) 1993-02-25
CA1310797C (en) 1992-12-01
ATE84581T1 (en) 1993-01-15
AU1406788A (en) 1988-10-06
AU606930B2 (en) 1991-02-21
DE3877403T2 (en) 1993-05-19
FI881544L (en) 1988-10-03
EP0285530B1 (en) 1993-01-13
FR2613388A1 (en) 1988-10-07
NO881404L (en) 1988-10-03
FI93749B (en) 1995-02-15
EP0285530A1 (en) 1988-10-05
FI93749C (en) 1995-05-26
NZ224144A (en) 1989-07-27
NO881404D0 (en) 1988-03-29
FR2613388B1 (en) 1990-05-04
DE285530T1 (en) 1989-03-30
FI881544A0 (en) 1988-03-31
ES2004846A4 (en) 1989-02-16
JPS63256786A (en) 1988-10-24

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