ES2195123T3 - Tratamiento de pasta papelera con un agente quelante sin utilizar torre de blanqueo. - Google Patents

Tratamiento de pasta papelera con un agente quelante sin utilizar torre de blanqueo.

Info

Publication number
ES2195123T3
ES2195123T3 ES97912616T ES97912616T ES2195123T3 ES 2195123 T3 ES2195123 T3 ES 2195123T3 ES 97912616 T ES97912616 T ES 97912616T ES 97912616 T ES97912616 T ES 97912616T ES 2195123 T3 ES2195123 T3 ES 2195123T3
Authority
ES
Spain
Prior art keywords
chelating agent
pulp
paper
whitening tower
pasta
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
ES97912616T
Other languages
English (en)
Inventor
Ulf Germgard
Jonas Lindquist
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.)
Valmet AB
Original Assignee
Valmet Fibertech AB
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 Valmet Fibertech AB filed Critical Valmet Fibertech AB
Application granted granted Critical
Publication of ES2195123T3 publication Critical patent/ES2195123T3/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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Hybrid Cells (AREA)
  • Noodles (AREA)

Abstract

UN PROCEDIMIENTO DE BLANQUEO DE PASTA SIN CLORO SEGUN EL CUAL LOS METALES SE ELIMINAN UTILIZANDO UN AGENTE QUELANTE. EL AGENTE QUELANTE SE MEZCLA CON LA PASTA EN AL MENOS UN PASO DE MEZCLA EFECTIVA SIN LLEVAR A CABO UN LAVADO INTERMEDIO, TRAS LO CUAL SE PASA LA PASTA DIRECTAMENTE, SIN UTILIZAR UNA TORRE INTERMEDIA, A UNA HOLANDESA LAVADORA DE PASTA. EL TIEMPO DE RETENCION TOTAL DEBE SER DE 15 MINUTOS COMO MAXIMO, CALCULADO TRAS LA ADICION DEL AGENTE QUELANTE.
ES97912616T 1997-01-03 1997-11-06 Tratamiento de pasta papelera con un agente quelante sin utilizar torre de blanqueo. Expired - Lifetime ES2195123T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9700030A SE508239C2 (sv) 1997-01-03 1997-01-03 Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn

Publications (1)

Publication Number Publication Date
ES2195123T3 true ES2195123T3 (es) 2003-12-01

Family

ID=20405369

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97912616T Expired - Lifetime ES2195123T3 (es) 1997-01-03 1997-11-06 Tratamiento de pasta papelera con un agente quelante sin utilizar torre de blanqueo.

Country Status (16)

Country Link
EP (1) EP0951599B1 (es)
JP (1) JP2001508837A (es)
CN (1) CN1103832C (es)
AT (1) ATE241725T1 (es)
AU (1) AU726599B2 (es)
BR (1) BR9714252A (es)
CA (1) CA2275257A1 (es)
DE (1) DE69722445T2 (es)
ES (1) ES2195123T3 (es)
ID (1) ID20003A (es)
NO (1) NO993290L (es)
NZ (1) NZ336204A (es)
PT (1) PT951599E (es)
SE (1) SE508239C2 (es)
WO (1) WO1998029597A1 (es)
ZA (1) ZA9710418B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101446054B (zh) * 2008-12-23 2010-04-14 华南理工大学 年产5万吨以上纸浆生产线的全无氯漂白方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9201477L (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
SE502665C2 (sv) * 1993-06-11 1995-12-04 Kvaerner Pulping Tech Sätt och reaktor för ozonblekning
SE501836C2 (sv) * 1993-09-21 1995-05-22 Sunds Defibrator Ind Ab Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg
SE504803C2 (sv) * 1995-08-24 1997-04-28 Sunds Defibrator Ind Ab Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt

Also Published As

Publication number Publication date
ATE241725T1 (de) 2003-06-15
SE9700030D0 (sv) 1997-01-03
SE9700030L (sv) 1998-07-04
CN1242060A (zh) 2000-01-19
NO993290D0 (no) 1999-07-02
NZ336204A (en) 1999-11-29
ID20003A (id) 1998-09-10
SE508239C2 (sv) 1998-09-21
CA2275257A1 (en) 1998-07-09
PT951599E (pt) 2003-10-31
NO993290L (no) 1999-09-02
EP0951599A1 (en) 1999-10-27
JP2001508837A (ja) 2001-07-03
AU726599B2 (en) 2000-11-16
AU4974197A (en) 1998-07-31
DE69722445D1 (de) 2003-07-03
DE69722445T2 (de) 2004-01-15
CN1103832C (zh) 2003-03-26
EP0951599B1 (en) 2003-05-28
WO1998029597A1 (en) 1998-07-09
BR9714252A (pt) 2000-04-18
ZA9710418B (en) 1998-06-10

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