ES2115664T3 - Metodo para blanquear pasta y reactor. - Google Patents

Metodo para blanquear pasta y reactor.

Info

Publication number
ES2115664T3
ES2115664T3 ES92900256T ES92900256T ES2115664T3 ES 2115664 T3 ES2115664 T3 ES 2115664T3 ES 92900256 T ES92900256 T ES 92900256T ES 92900256 T ES92900256 T ES 92900256T ES 2115664 T3 ES2115664 T3 ES 2115664T3
Authority
ES
Spain
Prior art keywords
bleaching
reactor
pasta
pulp
pulp particles
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
ES92900256T
Other languages
English (en)
Other versions
ES2115664T5 (es
Inventor
David E White
Michael A Pikulin
Thomas P Gandek
William H Friend
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.)
Union Camp Patent Holding Inc
Original Assignee
Union Camp Patent Holding Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25742742&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2115664(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Union Camp Patent Holding Inc filed Critical Union Camp Patent Holding Inc
Application granted granted Critical
Publication of ES2115664T3 publication Critical patent/ES2115664T3/es
Publication of ES2115664T5 publication Critical patent/ES2115664T5/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1145—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cereal-Derived Products (AREA)
  • Buffer Packaging (AREA)

Abstract

Un método para blanquear pasta, que comprende: introducir pasta que tiene una consistencia elevada, superior a 20%, en una zona de reacción; introducir en la zona de reacción un agente blanqueante gaseoso que contiene ozono; y avanzar la pasta a través de la zona de reacción en una manera similar al flujo de pistón durante un tiempo suficiente para obtener blanqueo de la pasta; caracterizado porque la pasta está en forma de partículas que tienen un tamaño suficiente para facilitar una penetración sustancialmente completa por el agente blanqueante gaseoso que contiene ozono cuando se expone a éste; las partículas de pasta se elevan, desplazan y agitan cuando pasan a través de la zona de reacción para dispersar las partículas de pasta en el agente blanqueante que contiene ozono y para exponer sustancialmente todas las superficies de una mayoría de las partículas de pasta al agente blanqueante gaseoso que contiene ozono; y se hace avanzar las partículas dispersas de pasta a través de la zona de reacción a un índice de dispersión de 8 o menos para formar una pasta blanqueada de modo sustancialmente uniforme que tiene una blancura GE incrementada.
ES92900256T 1990-10-26 1991-10-25 Metodo para blanquear pasta y reactor. Expired - Lifetime ES2115664T5 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/604,849 US5181989A (en) 1990-10-26 1990-10-26 Reactor for bleaching high consistency pulp with ozone
US604849 1990-10-26
CN92103090A CN1047418C (zh) 1990-10-26 1992-04-24 纸浆漂白反应器及其方法

Publications (2)

Publication Number Publication Date
ES2115664T3 true ES2115664T3 (es) 1998-07-01
ES2115664T5 ES2115664T5 (es) 2007-11-16

Family

ID=25742742

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92900256T Expired - Lifetime ES2115664T5 (es) 1990-10-26 1991-10-25 Metodo para blanquear pasta y reactor.

Country Status (19)

Country Link
US (2) US5181989A (es)
EP (1) EP0512098B2 (es)
JP (1) JP2572191B2 (es)
KR (1) KR960003431B1 (es)
CN (1) CN1047418C (es)
AT (1) ATE163696T1 (es)
AU (1) AU647858B2 (es)
BR (1) BR9106115A (es)
CA (1) CA2069436C (es)
DE (1) DE69129017T3 (es)
ES (1) ES2115664T5 (es)
FI (1) FI119108B (es)
MX (1) MX9101662A (es)
NO (1) NO301431B1 (es)
NZ (1) NZ240215A (es)
PT (1) PT99289B (es)
SE (1) SE9201641L (es)
WO (1) WO1992007999A1 (es)
ZA (1) ZA918280B (es)

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Also Published As

Publication number Publication date
WO1992007999A1 (en) 1992-05-14
JPH05504796A (ja) 1993-07-22
NO922486D0 (no) 1992-06-23
DE69129017T2 (de) 1998-09-24
SE9201641L (sv) 1992-08-24
SE9201641D0 (sv) 1992-05-25
ES2115664T5 (es) 2007-11-16
EP0512098B1 (en) 1998-03-04
DE69129017T3 (de) 2008-08-21
CA2069436C (en) 1996-08-27
FI119108B (fi) 2008-07-31
NO301431B1 (no) 1997-10-27
KR920703923A (ko) 1992-12-18
NO922486L (no) 1992-08-25
EP0512098A1 (en) 1992-11-11
CN1078006A (zh) 1993-11-03
PT99289A (pt) 1993-11-30
NZ240215A (en) 1993-08-26
ATE163696T1 (de) 1998-03-15
FI922322A (fi) 1992-05-21
DE69129017D1 (de) 1998-04-09
JP2572191B2 (ja) 1997-01-16
MX9101662A (es) 1994-05-31
PT99289B (pt) 1999-02-26
US5181989A (en) 1993-01-26
US5863389A (en) 1999-01-26
AU647858B2 (en) 1994-03-31
CA2069436A1 (en) 1992-04-27
BR9106115A (pt) 1993-02-24
ZA918280B (en) 1992-07-29
FI922322A0 (fi) 1992-05-21
CN1047418C (zh) 1999-12-15
KR960003431B1 (ko) 1996-03-13
AU9040391A (en) 1992-05-26
EP0512098B2 (en) 2006-02-01

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