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CA2279283A1 - Method and device for the continuous cooking of pulp - Google Patents

Method and device for the continuous cooking of pulp Download PDF

Info

Publication number
CA2279283A1
CA2279283A1 CA002279283A CA2279283A CA2279283A1 CA 2279283 A1 CA2279283 A1 CA 2279283A1 CA 002279283 A CA002279283 A CA 002279283A CA 2279283 A CA2279283 A CA 2279283A CA 2279283 A1 CA2279283 A1 CA 2279283A1
Authority
CA
Canada
Prior art keywords
con
cooking
zone
current
fibre material
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.)
Granted
Application number
CA002279283A
Other languages
French (fr)
Other versions
CA2279283C (en
Inventor
Johan Engstrom
Vidar Snekkenes
Krister Olsson
Soren Gustavsson
Christofer Lindgren
Mikael Lindstrom
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
Individual
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=20405502&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2279283(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority claimed from PCT/SE1998/000225 external-priority patent/WO1998035091A1/en
Publication of CA2279283A1 publication Critical patent/CA2279283A1/en
Application granted granted Critical
Publication of CA2279283C publication Critical patent/CA2279283C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • General Preparation And Processing Of Foods (AREA)

Abstract

This invention relates to a new and improved way of continuously cooking fibre material, wherein temperatures and alkaline levels are controlled to be maintained within specific levels in different zones of the digesting process in order to optimise chemical consumption and heat-economy and at the same time achieve very good pulp properties. The fibre material is heated and impregnated by the aid of black liquor to a temperature less than 140 °C and passed in con-current in an impregnation zone (A). The heated and impregnated fibre material is transferred to a con-current cooking zone (B) in the upper part of a digester (6). At least 60 % of the quantity of liquor (F) required for the cooking reaction is supplied in the up-stream end of the con-current cooking zone (B) in order to obtain a level of effective alkali exceeding 35 g/l. The cooking temperature in the con-current cooking zone (B) is lower than 160 °C. Spent liquor (E), with an amount of effective alkali of at least 13 g/l, is withdrawn from a strainer girdle (8). A substantial part of the spent liquor is supplied to the impregnation zone.
CA002279283A 1997-02-09 1998-02-09 Method and device for the continuous cooking of pulp Expired - Fee Related CA2279283C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/SE1997/000192 WO1998035090A1 (en) 1997-02-09 1997-02-09 Continuous method for producing pulp with spent liquor impregnation
WOPCT/SE97/00192 1997-02-09
PCT/SE1998/000225 WO1998035091A1 (en) 1997-02-09 1998-02-09 Method and device for the continuous cooking of pulp

Publications (2)

Publication Number Publication Date
CA2279283A1 true CA2279283A1 (en) 1998-08-13
CA2279283C CA2279283C (en) 2008-08-26

Family

ID=20405502

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002279283A Expired - Fee Related CA2279283C (en) 1997-02-09 1998-02-09 Method and device for the continuous cooking of pulp

Country Status (8)

Country Link
EP (1) EP0909353B1 (en)
AT (1) ATE201064T1 (en)
AU (1) AU2183697A (en)
CA (1) CA2279283C (en)
DE (1) DE69800767T2 (en)
ES (1) ES2159175T3 (en)
WO (1) WO1998035090A1 (en)
ZA (1) ZA98936B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1318688C (en) * 2003-08-26 2007-05-30 山东泉林纸业有限责任公司 Impregnation pretreatment technology of raw material used in soda process pulp making
SE527058C2 (en) * 2004-02-09 2005-12-13 Kvaerner Pulping Tech Continuous cooking process with improved heat economy
SE533670C2 (en) * 2009-04-01 2010-11-30 Metso Fiber Karlstad Ab System and method for controlling a continuous steam phase boiler
CN103215834B (en) * 2013-04-17 2015-01-07 岳阳林纸股份有限公司 Energy-saving environment-friendly continuous cooking process
RU2670855C1 (en) * 2017-06-26 2018-10-25 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна" Method of the process wooden chips boiling in the cellulose manufacturing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639987A (en) * 1947-07-09 1953-05-26 Ass Pulp & Paper Mills Two-stage pulping process
FI82079C (en) * 1989-04-27 1993-05-11 Poeyry Jaakko & Co Oy Foerfarande och anordning Foer kontinuerlig kokning av Cellulosa
SE502039C2 (en) * 1993-12-29 1995-07-24 Kvaerner Pulping Tech Methods and apparatus for continuous cooking of pulp
AU2697295A (en) * 1994-09-02 1996-03-27 Kamyr Inc. Continuous kraft cooking with black liquor pretreatment
US5635026A (en) * 1995-11-13 1997-06-03 Ahlstrom Machinery Inc. Cooking cellulose material with high alkali concentrations and/or high pH

Also Published As

Publication number Publication date
ZA98936B (en) 1998-09-23
ES2159175T3 (en) 2001-09-16
DE69800767D1 (en) 2001-06-13
CA2279283C (en) 2008-08-26
EP0909353A1 (en) 1999-04-21
EP0909353B1 (en) 2001-05-09
DE69800767T2 (en) 2001-11-29
ATE201064T1 (en) 2001-05-15
AU2183697A (en) 1998-08-26
WO1998035090A1 (en) 1998-08-13

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160209