DE60322493D1 - Process and apparatus for treating pulp - Google Patents

Process and apparatus for treating pulp

Info

Publication number
DE60322493D1
DE60322493D1 DE60322493T DE60322493T DE60322493D1 DE 60322493 D1 DE60322493 D1 DE 60322493D1 DE 60322493 T DE60322493 T DE 60322493T DE 60322493 T DE60322493 T DE 60322493T DE 60322493 D1 DE60322493 D1 DE 60322493D1
Authority
DE
Germany
Prior art keywords
paper pulp
bleaching
per cent
treating pulp
debarking
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
DE60322493T
Other languages
German (de)
Inventor
Per Larsson
Mats Lennvig
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.)
SOEDRA CELL AB
Original Assignee
SOEDRA CELL 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 SOEDRA CELL AB filed Critical SOEDRA CELL AB
Application granted granted Critical
Publication of DE60322493D1 publication Critical patent/DE60322493D1/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
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means

Abstract

A method and an apparatus for increasing form factor and tensile index in a dry paper pulp for sale which per se is produced in a paper pulp mill and comprises the steps of: raw materials intake, possible debarking and chipping, cooking, as well as bleaching of the paper pulp obtained therefrom to brightnesses of between 70 and 95 per cent ISO, whereafter the product is dried. According to the invention, the paper pulp is mechanically processed in the wet state after the bleaching and before the drying in a fibre shearing apparatus (1-6 weight per cent concentration) at a moderate pressure of from 100 to 750 kPa. <IMAGE>
DE60322493T 2002-11-14 2003-10-30 Process and apparatus for treating pulp Expired - Lifetime DE60322493D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0203391A SE0203391D0 (en) 2002-11-14 2002-11-14 Method and apparatus for optimizing chemically extracted pulp fibers

Publications (1)

Publication Number Publication Date
DE60322493D1 true DE60322493D1 (en) 2008-09-11

Family

ID=20289586

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60322493T Expired - Lifetime DE60322493D1 (en) 2002-11-14 2003-10-30 Process and apparatus for treating pulp

Country Status (6)

Country Link
EP (1) EP1420109B1 (en)
AT (1) ATE403027T1 (en)
DE (1) DE60322493D1 (en)
ES (1) ES2310639T3 (en)
PT (1) PT1420109E (en)
SE (1) SE0203391D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0502638L (en) * 2005-11-30 2007-05-31 Soedra Cell Ab System for allowing mechanical processing of a fiber suspension
FI20175545A1 (en) * 2017-06-13 2018-12-14 Upm Kymmene Corp Method for increasing the tensile strength of pulp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791503A (en) * 1952-05-08 1957-05-07 Champion Paper & Fibre Co Process for producing semichemical pulp
GB1065722A (en) * 1962-10-12 1967-04-19 Crown Zellerbach Corp A process of producing high-strength papermaking pulps,and paper products made from them
US3445329A (en) * 1966-03-14 1969-05-20 Crown Zellerbach Corp Storage of high consistency refined pulp
NO127870B (en) * 1966-10-27 Kamyr Ab,Sw
US3382140A (en) * 1966-12-30 1968-05-07 Crown Zellerbach Corp Process for fibrillating cellulosic fibers and products thereof
US6059924A (en) * 1998-01-02 2000-05-09 Georgia-Pacific Corporation Fluffed pulp and method of production
DE10064131C2 (en) * 2000-12-22 2003-03-27 Sca Hygiene Prod Gmbh Fully bleached sulfite pulp, process for its manufacture and products made from it

Also Published As

Publication number Publication date
EP1420109B1 (en) 2008-07-30
ES2310639T3 (en) 2009-01-16
ATE403027T1 (en) 2008-08-15
SE0203391D0 (en) 2002-11-14
PT1420109E (en) 2008-09-24
EP1420109A1 (en) 2004-05-19

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Legal Events

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