CA2149423A1 - Process for continuous cooking of pulp - Google Patents

Process for continuous cooking of pulp

Info

Publication number
CA2149423A1
CA2149423A1 CA002149423A CA2149423A CA2149423A1 CA 2149423 A1 CA2149423 A1 CA 2149423A1 CA 002149423 A CA002149423 A CA 002149423A CA 2149423 A CA2149423 A CA 2149423A CA 2149423 A1 CA2149423 A1 CA 2149423A1
Authority
CA
Canada
Prior art keywords
digester
fibre material
temperature
strainer girdle
cooking
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
CA002149423A
Other languages
French (fr)
Other versions
CA2149423C (en
Inventor
Ake Backlund
Johanna Svanberg
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
Kamyr 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20387855&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2149423(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kamyr AB filed Critical Kamyr AB
Publication of CA2149423A1 publication Critical patent/CA2149423A1/en
Application granted granted Critical
Publication of CA2149423C publication Critical patent/CA2149423C/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous 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
    • D21C7/00—Digesters
    • 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
    • D21C7/00—Digesters
    • D21C7/14—Means for circulating the lye

Abstract

The present invention relates to a digester for continuous cooking under raised pressure and temperature of fibre material in a vertical digester (1), where input of fibre material and cooking liquid takes place at the top of the digester, withdrawal of spent cooking liquor is carried out from at least one digester strainer girdle (1D) between the top and the bottom of the digester, and fibre material is fed out from the bottom (1C) of the digester, wherein an existing digester (1) is fitted with an additional di-gester strainer girdle (2) above the lowest strainer girdle (1B) of the digester so that the temperature in all the participatory coo-king zones in the digester can he kept at essentially the same temperature level.
CA002149423A 1992-11-18 1993-10-08 Process for continuous cooking of pulp Expired - Lifetime CA2149423C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9203462A SE500455C2 (en) 1992-11-18 1992-11-18 Method of continuous cooking under elevated pressure and temperature of fiber material in a vertical digester
SE9203462-8 1993-04-20
PCT/SE1993/000816 WO1994011566A1 (en) 1992-11-18 1993-10-08 Process for continuous cooking of pulp

Publications (2)

Publication Number Publication Date
CA2149423A1 true CA2149423A1 (en) 1994-05-26
CA2149423C CA2149423C (en) 2004-03-16

Family

ID=20387855

Family Applications (3)

Application Number Title Priority Date Filing Date
CA002149535A Expired - Fee Related CA2149535C (en) 1992-11-18 1993-03-16 Digester for continuous cooking of fibre material
CA002149434A Expired - Fee Related CA2149434C (en) 1992-11-18 1993-04-08 Digester for continuous cooking of fibre material
CA002149423A Expired - Lifetime CA2149423C (en) 1992-11-18 1993-10-08 Process for continuous cooking of pulp

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA002149535A Expired - Fee Related CA2149535C (en) 1992-11-18 1993-03-16 Digester for continuous cooking of fibre material
CA002149434A Expired - Fee Related CA2149434C (en) 1992-11-18 1993-04-08 Digester for continuous cooking of fibre material

Country Status (18)

Country Link
US (4) US5470437A (en)
EP (3) EP0669998B2 (en)
JP (3) JP3287848B2 (en)
CN (1) CN1036728C (en)
AT (3) ATE156538T1 (en)
AU (3) AU684759B2 (en)
BR (3) BR9307478A (en)
CA (3) CA2149535C (en)
DE (4) DE69312955T3 (en)
ES (3) ES2105269T5 (en)
FI (3) FI114718B (en)
MA (1) MA23034A1 (en)
NO (3) NO306479B1 (en)
NZ (3) NZ252758A (en)
RU (3) RU2121537C1 (en)
SE (3) SE500455C2 (en)
WO (3) WO1994011564A1 (en)
ZA (3) ZA937958B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009741A1 (en) * 1991-11-19 1993-05-27 The Procter & Gamble Company Absorbent article having a nonwoven and apertured film coversheet
SE500959C2 (en) * 1993-02-16 1994-10-10 Kvaerner Pulping Tech Strainer in a continuous digester
US5766413A (en) * 1993-04-23 1998-06-16 Kvaerner Pulping Ab Process for isothermal cooking pulp in a continuous digester
SE502486C2 (en) * 1994-02-18 1995-10-30 Kvaerner Pulping Tech Procedure and arrangement of valve for extraction and reverse flushing of ex. boiling liquid in cellulose boilers and their use in boiling sieves
WO1997001666A1 (en) * 1995-06-29 1997-01-16 Salminen Reijo K Continuous digester
US5658428A (en) * 1995-10-19 1997-08-19 Kvaerner Pulping Technologies Ab Method for impregnation in a single-vessel hydraulic digester
US5885414A (en) * 1997-08-18 1999-03-23 Kvaerner Pulping Ab Method of producing pulp with high alkali cooking in the last cooking stage
US5985096A (en) * 1997-09-23 1999-11-16 Ahlstrom Machinery Inc. Vertical pulping digester having substantially constant diameter
US6123808A (en) * 1997-12-09 2000-09-26 Ahlstrom Machinery Inc. Distribution of dilution liquor to the discharge of a cellulose pulp digester
US20010032711A1 (en) * 1998-10-26 2001-10-25 C. Bertil Stromberg Pulp cooking with particular alkali profiles
US20020069986A1 (en) * 2000-06-16 2002-06-13 Marcoccia Bruno S. System and method for improved filtrate addition in a continuous digester
SE0004049L (en) * 2000-11-03 2001-11-05 Kvaerner Pulping Tech Continuous boiling of pulp less used cooking liquor partly from the digester and partly from a subsequent pressure diffuser
SE515971C2 (en) * 2000-11-03 2001-11-05 Kvaerner Pulping Tech Continuous boiling of pulp with net mid-stream flow in the bottom portion of the boiler
CN1308545C (en) * 2003-08-26 2007-04-04 山东泉林纸业有限责任公司 Vertical boiling pot for paper pulp
FI117477B (en) * 2004-05-28 2006-10-31 Metso Paper Inc strainer body
US20050274468A1 (en) 2004-05-28 2005-12-15 Metso Paper, Inc. Central screen
US7736467B2 (en) * 2004-06-29 2010-06-15 Metso Paper Pori Oy Screen assembly for a pulp digester
SE531067C2 (en) * 2005-09-15 2008-12-09 Metso Fiber Karlstad Ab Continuous boiler with liquid circulation
US7799173B2 (en) * 2007-01-18 2010-09-21 Andritz Inc. Screen plates having diagonal slots with curved inlets for a digester
SE530744C2 (en) * 2007-02-23 2008-09-02 Metso Fiber Karlstad Ab Steam phase boilers and a procedure for continuous boiling
SE531717C2 (en) * 2007-11-30 2009-07-21 Metso Fiber Karlstad Ab Kokarsil for a continuous cellulose pulp cooker
SE532930C2 (en) * 2008-03-20 2010-05-11 Metso Fiber Karlstad Ab Supply system including parallel pumps for a continuous boiler
US7867363B2 (en) * 2008-08-27 2011-01-11 Metso Fiber Karlstad Ab Continuous digester system
SE533670C2 (en) * 2009-04-01 2010-11-30 Metso Fiber Karlstad Ab System and method for controlling a continuous steam phase boiler
US8951388B2 (en) * 2011-04-08 2015-02-10 Pec-Tech Engineering And Construction Pte Ltd Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
US8980061B2 (en) 2012-01-12 2015-03-17 Valmet Ab Profile bar screen for digester vessels
CN102619122A (en) * 2012-04-25 2012-08-01 湖南骏泰浆纸有限责任公司 Upper circulation device of vertical continuous digester
CN104520501A (en) * 2012-06-28 2015-04-15 国际壳牌研究有限公司 Digestion units configured for high yield biomass processing
US9115214B2 (en) 2012-09-24 2015-08-25 Abengoa Bioenergy New Technologies, Llc Methods for controlling pretreatment of biomass
CN102978987A (en) * 2012-12-24 2013-03-20 江苏华机环保设备有限责任公司 Vertical cooker
US20170022664A1 (en) * 2014-04-07 2017-01-26 Stora Enso Oyj Method of digesting cellulose fibrous material in a continuous digester
SE538326C2 (en) * 2014-09-01 2016-05-17 Valmet Oy Profile bar screen for digester vessels
RU208723U1 (en) * 2021-09-14 2022-01-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна" VERTICAL BOILER

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE211196C1 (en) *
US2414062A (en) * 1944-05-02 1947-01-07 Kamyr Ab Apparatus for heating and controlling the temperature in a continuously operating digester
US2852369A (en) * 1954-09-17 1958-09-16 Electric Steel Foundry Digester strainer
US2998064A (en) * 1957-12-11 1961-08-29 Improved Machinery Inc Strainer construction
SE325770B (en) * 1969-10-13 1970-07-06 Kamyr Ab
SE343344B (en) * 1970-06-29 1972-03-06 Kamyr Ab
US3755072A (en) † 1970-10-23 1973-08-28 Kamyr Ab Strainer device for cellulose digester
US3700548A (en) * 1971-04-28 1972-10-24 Improved Machinery Inc Apparatus and methods of continuous digesting
US3836463A (en) * 1972-07-28 1974-09-17 Gen Signal Corp System and apparatus for cleaning bar grid
US4193839A (en) * 1976-05-11 1980-03-18 Kamyr, Inc. Flow control method and apparatus for continuous wood chip digester screenless liquor extractor
US4436586A (en) * 1982-01-22 1984-03-13 Kamyr, Inc. Method of producing kraft pulp using an acid prehydrolysis and pre-extraction
JPS609287A (en) * 1983-06-29 1985-01-18 Fuji Photo Film Co Ltd Cassette control device of video recording device
CA2037717C (en) * 1990-09-17 1996-03-05 Bertil Stromberg Extended kraft cooking with white liquor added to wash circulation
US5328564A (en) * 1990-09-17 1994-07-12 Kamyr, Inc. Modified digestion of paper pulp followed by ozone bleaching
US5236554A (en) * 1991-08-16 1993-08-17 Kamyr, Inc. Digester having plural screens with means for controlling liquid injection and withdrawal

Also Published As

Publication number Publication date
NZ252340A (en) 1996-11-26
CN1091792A (en) 1994-09-07
FI952387A0 (en) 1995-05-17
RU2121537C1 (en) 1998-11-10
RU95112496A (en) 1997-01-27
NO306479B1 (en) 1999-11-08
ES2077548T1 (en) 1995-12-01
ES2103082T3 (en) 1997-08-16
SE9402411L (en) 1994-07-08
ZA937958B (en) 1994-05-27
DE69312955T2 (en) 1997-12-11
AU684759B2 (en) 1998-01-08
NO951972L (en) 1995-05-18
NO951973L (en) 1995-05-18
WO1994011564A1 (en) 1994-05-26
CA2149535C (en) 2004-07-06
US5567280A (en) 1996-10-22
RU2126470C1 (en) 1999-02-20
NZ252758A (en) 1996-06-25
JP3287848B2 (en) 2002-06-04
AU6396594A (en) 1994-06-08
ES2105269T5 (en) 2002-03-01
EP0673452A1 (en) 1995-09-27
RU2113574C1 (en) 1998-06-20
ATE156538T1 (en) 1997-08-15
BR9307480A (en) 1999-08-24
ZA937959B (en) 1994-05-27
ATE164400T1 (en) 1998-04-15
CN1036728C (en) 1997-12-17
FI952387A (en) 1995-05-17
CA2149535A1 (en) 1994-05-26
FI113186B (en) 2004-03-15
JP3287849B2 (en) 2002-06-04
BR9307479A (en) 1999-08-24
AU5435594A (en) 1994-06-08
SE9402412D0 (en) 1994-07-08
SE513746C2 (en) 2000-10-30
US5470437A (en) 1995-11-28
WO1994011565A1 (en) 1994-05-26
CA2149434A1 (en) 1994-05-26
DE69310929T2 (en) 1997-11-20
ES2077548T3 (en) 1998-06-16
ATE153398T1 (en) 1997-06-15
FI952389A (en) 1995-05-17
ES2105269T3 (en) 1997-10-16
FI114718B (en) 2004-12-15
EP0669998A1 (en) 1995-09-06
DE69310929D1 (en) 1997-06-26
SE9203462D0 (en) 1992-11-18
SE9402412L (en) 1994-07-08
EP0673452B1 (en) 1997-05-21
FI952389A0 (en) 1995-05-17
US5827401A (en) 1998-10-27
WO1994011566A1 (en) 1994-05-26
DE673453T1 (en) 1996-02-29
DE69317670D1 (en) 1998-04-30
FI952388A0 (en) 1995-05-17
FI952388A (en) 1995-05-17
DE69317670T2 (en) 1998-08-20
EP0673453A1 (en) 1995-09-27
AU4096693A (en) 1994-06-08
BR9307478A (en) 1999-08-24
AU680194B2 (en) 1997-07-24
EP0673453B1 (en) 1998-03-25
EP0669998B1 (en) 1997-08-06
CA2149434C (en) 2004-07-13
JPH08503268A (en) 1996-04-09
US5591303A (en) 1997-01-07
DE69312955D1 (en) 1997-09-11
AU673392B2 (en) 1996-11-07
JPH08504238A (en) 1996-05-07
DE69312955T3 (en) 2002-04-11
NO951972D0 (en) 1995-05-18
NO306478B1 (en) 1999-11-08
JPH08503030A (en) 1996-04-02
MA23034A1 (en) 1993-11-17
NO951974D0 (en) 1995-05-18
CA2149423C (en) 2004-03-16
RU95112494A (en) 1997-01-27
NO306477B1 (en) 1999-11-08
NZ257659A (en) 1996-07-26
EP0669998B2 (en) 2001-08-22
NO951973D0 (en) 1995-05-18
NO951974L (en) 1995-05-18
FI115142B (en) 2005-03-15
SE9402411D0 (en) 1994-07-08
JP3223285B2 (en) 2001-10-29
RU95112468A (en) 1997-04-10
SE9203462L (en) 1994-05-19
ZA938390B (en) 1994-06-09
SE500455C2 (en) 1994-06-27

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20131008