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SE9802879L - Apparatus, process system and process for the pre-treatment of broken cellulosic material - Google Patents

Apparatus, process system and process for the pre-treatment of broken cellulosic material

Info

Publication number
SE9802879L
SE9802879L SE9802879A SE9802879A SE9802879L SE 9802879 L SE9802879 L SE 9802879L SE 9802879 A SE9802879 A SE 9802879A SE 9802879 A SE9802879 A SE 9802879A SE 9802879 L SE9802879 L SE 9802879L
Authority
SE
Sweden
Prior art keywords
cellulosic material
treatment
vessel
broken
basing
Prior art date
Application number
SE9802879A
Other languages
Swedish (sv)
Other versions
SE523850C2 (en
SE9802879D0 (en
SE523850E (en
Inventor
Christer Fahlgren
Soeren Gustavsson
Original Assignee
Kvaerner Pulping Tech
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=26663075&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE9802879(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from SE9703393A external-priority patent/SE9703393D0/en
Application filed by Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9802879A priority Critical patent/SE523850E/en
Publication of SE9802879D0 publication Critical patent/SE9802879D0/en
Publication of SE9802879L publication Critical patent/SE9802879L/en
Publication of SE523850C2 publication Critical patent/SE523850C2/en
Publication of SE523850E publication Critical patent/SE523850E/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam

Landscapes

  • Paper (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Pressurised pre-treatment liquid for the cellulosic material is added to the pre-treatment vessel using a spray device to generate basing vapour. Process equipment for pre-treating broken down cellulosic material comprises a pre-treatment vessel (20) with an inlet (21) and outlet (22) for the cellulosic material, supply, discharge and overflow flows (23-25) for the pretreatment liquid, and a chemical addition location (26). A spray device (27) in the pre-treatment vessel acts as a decompression device for the pressurised pre-treatment liquid added to the vessel, generating basing vapour for the cellulosic material inside this vessel. Independent claims are also included for (a) a process system and (b) the process utilising this equipment.
SE9802879A 1997-09-22 1998-08-28 Procedure for the pre-treatment of chips with base steam and impregnation liquid SE523850E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9802879A SE523850E (en) 1997-09-22 1998-08-28 Procedure for the pre-treatment of chips with base steam and impregnation liquid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703393A SE9703393D0 (en) 1997-09-22 1997-09-22 Apparatus, process system and method for the pre-treatment of decomposed cellulosic material
SE9802879A SE523850E (en) 1997-09-22 1998-08-28 Procedure for the pre-treatment of chips with base steam and impregnation liquid

Publications (4)

Publication Number Publication Date
SE9802879D0 SE9802879D0 (en) 1998-08-28
SE9802879L true SE9802879L (en) 1999-03-23
SE523850C2 SE523850C2 (en) 2004-05-25
SE523850E SE523850E (en) 2009-06-02

Family

ID=26663075

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9802879A SE523850E (en) 1997-09-22 1998-08-28 Procedure for the pre-treatment of chips with base steam and impregnation liquid

Country Status (1)

Country Link
SE (1) SE523850E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103790057A (en) * 2014-01-27 2014-05-14 天津科技大学 Method for pre-treating wood chips by hot water before preparing chemi-mechanical pulp and pulping method by using same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0104272L (en) 2001-12-17 2002-11-12 Kvaerner Pulping Tech Process and arrangement for impregnating wood chips
SE0401870D0 (en) 2004-07-15 2004-07-15 Kvaerner Pulping Tech Procedure for impregnating wood chips
FI20085425L (en) * 2008-05-08 2009-11-09 Metso Paper Inc Sulfate pre-hydrolysis cooking method
BR112012003861B1 (en) 2009-08-19 2019-07-02 Valmet Aktiebolag Method and arrangement for adding a steam and hot treatment liquor to a non-vaporized crushed cellulosic material
US10151063B2 (en) 2014-08-26 2018-12-11 Valmet Ab Cost efficient kraft cooking method using polysulfide cooking liquor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103790057A (en) * 2014-01-27 2014-05-14 天津科技大学 Method for pre-treating wood chips by hot water before preparing chemi-mechanical pulp and pulping method by using same
CN103790057B (en) * 2014-01-27 2016-03-30 天津科技大学 To the method for wood chip hot-water pretreatment and the pulping process utilizing the method before a kind of preparative chemistry mechanical pulp

Also Published As

Publication number Publication date
SE523850C2 (en) 2004-05-25
SE9802879D0 (en) 1998-08-28
SE523850E (en) 2009-06-02

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Legal Events

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NUG Patent has lapsed