SE9604324D0 - Method and apparatus for heating masses - Google Patents

Method and apparatus for heating masses

Info

Publication number
SE9604324D0
SE9604324D0 SE9604324A SE9604324A SE9604324D0 SE 9604324 D0 SE9604324 D0 SE 9604324D0 SE 9604324 A SE9604324 A SE 9604324A SE 9604324 A SE9604324 A SE 9604324A SE 9604324 D0 SE9604324 D0 SE 9604324D0
Authority
SE
Sweden
Prior art keywords
pulp
pressure
steam
blender
pressurising
Prior art date
Application number
SE9604324A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9604324L (en
SE516348C2 (en
Inventor
Kari Peltonen
Reijo Vesala
Vesa Vikman
Original Assignee
Ahlstroem A
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 Ahlstroem A filed Critical Ahlstroem A
Priority to SE9604324A priority Critical patent/SE516348C2/en
Publication of SE9604324D0 publication Critical patent/SE9604324D0/en
Priority to PCT/FI1997/000623 priority patent/WO1999019560A1/en
Publication of SE9604324L publication Critical patent/SE9604324L/en
Publication of SE516348C2 publication Critical patent/SE516348C2/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
    • 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
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

A method for heating pulp comprises pressurising the pulp to a first pressure and then introducing low pressure steam into the pulp downstream of this pressurising region, at a pressure greater than that of the pulp. A pressure-increasing blender is used to homogeneously mix the steam into the pulp and/or to even out the temperature of the pulp after the steam has been introduced into the pumped flow of pulp. The pressure generated by the blender is used to drive the pulp to the next process step.The process equipment used for this method is also claimed, comprising a pulp transport device (12) located in a pulp conveyor line (14), a low pressure steam supply device (16) and a blender (18).
SE9604324A 1996-11-25 1996-11-25 Pulp heating using low pressure steam SE516348C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9604324A SE516348C2 (en) 1996-11-25 1996-11-25 Pulp heating using low pressure steam
PCT/FI1997/000623 WO1999019560A1 (en) 1996-11-25 1997-10-14 Method and apparatus for heating pulps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9604324A SE516348C2 (en) 1996-11-25 1996-11-25 Pulp heating using low pressure steam

Publications (3)

Publication Number Publication Date
SE9604324D0 true SE9604324D0 (en) 1996-11-25
SE9604324L SE9604324L (en) 1998-05-26
SE516348C2 SE516348C2 (en) 2001-12-17

Family

ID=20404741

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9604324A SE516348C2 (en) 1996-11-25 1996-11-25 Pulp heating using low pressure steam

Country Status (1)

Country Link
SE (1) SE516348C2 (en)

Also Published As

Publication number Publication date
SE9604324L (en) 1998-05-26
SE516348C2 (en) 2001-12-17

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Legal Events

Date Code Title Description
NUG Patent has lapsed