EP1797235A4 - Improved alkaline process and system for producing pulp - Google Patents

Improved alkaline process and system for producing pulp

Info

Publication number
EP1797235A4
EP1797235A4 EP20050795252 EP05795252A EP1797235A4 EP 1797235 A4 EP1797235 A4 EP 1797235A4 EP 20050795252 EP20050795252 EP 20050795252 EP 05795252 A EP05795252 A EP 05795252A EP 1797235 A4 EP1797235 A4 EP 1797235A4
Authority
EP
European Patent Office
Prior art keywords
alkaline process
producing pulp
improved alkaline
improved
pulp
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.)
Withdrawn
Application number
EP20050795252
Other languages
German (de)
French (fr)
Other versions
EP1797235A1 (en
Inventor
Lasse Hernesniemi
Antti Tuominen
Tuomo Nykaenen
Rami Lampinen
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 Technologies Oy
Original Assignee
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP1797235A1 publication Critical patent/EP1797235A1/en
Publication of EP1797235A4 publication Critical patent/EP1797235A4/en
Withdrawn legal-status Critical Current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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
    • 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
    • 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
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
    • 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
    • D21C3/222—Use of compounds accelerating the 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
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous processes
EP20050795252 2004-10-04 2005-10-04 Improved alkaline process and system for producing pulp Withdrawn EP1797235A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20041288A FI120547B (en) 2004-10-04 2004-10-04 Alkaline cooking process and pulp making plant
PCT/FI2005/050346 WO2006037860A1 (en) 2004-10-04 2005-10-04 Improved alkaline process and system for producing pulp

Publications (2)

Publication Number Publication Date
EP1797235A1 EP1797235A1 (en) 2007-06-20
EP1797235A4 true EP1797235A4 (en) 2010-10-06

Family

ID=33305995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050795252 Withdrawn EP1797235A4 (en) 2004-10-04 2005-10-04 Improved alkaline process and system for producing pulp

Country Status (6)

Country Link
US (1) US20070256801A1 (en)
EP (1) EP1797235A4 (en)
CN (1) CN101068977B (en)
CA (1) CA2581923A1 (en)
FI (1) FI120547B (en)
WO (1) WO2006037860A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE530332C2 (en) * 2006-11-07 2008-05-06 Metso Fiber Karlstad Ab Process for energy-efficient production of cellulose pulp in a continuous cookery
US20090038767A1 (en) * 2007-08-07 2009-02-12 Andritz Inc. Method and System for Semi-Chemical Pulping
FI20090079A (en) * 2009-03-05 2010-09-06 Andritz Inc Heat recovery from waste cooking liquor at a pulp mill digester
US20100263813A1 (en) * 2009-04-21 2010-10-21 Andritz Inc. Green liquor pretreatment of lignocellulosic material
KR20110123184A (en) 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 Method and system for high alpha dissolving pulp production
WO2011138634A1 (en) * 2010-05-04 2011-11-10 Bahia Specialty Cellulose Sa Method and system for high alpha dissolving pulp production
CN103924471B (en) * 2014-04-02 2017-07-28 上海同化新材料科技有限公司 A kind of preparation of modified wood fibre element and its product
FI126802B (en) * 2014-09-12 2017-05-31 Andritz Oy Process and continuous hydraulic boiler system for chemical pulp production
FR3039567A1 (en) * 2015-07-31 2017-02-03 Commissariat Energie Atomique DEVICE AND PROCESS FOR TREATING BLACK LIQUOR FROM THE PREPARATION OF PAPER PULP BY HYDROTHERMAL LIQUEFACTION
SE539449C2 (en) * 2015-11-16 2017-09-26 Valmet Oy Method for heating cellulosic material to full cooking temperature in digesters
CN106381743B (en) * 2016-11-19 2018-02-16 王芹 A kind of fiber process for refining
CN108611896A (en) * 2016-12-20 2018-10-02 丁永新 Using paper grade (stock) slurry made of wood, bamboo raw material
CN109957981A (en) * 2017-12-25 2019-07-02 福建省青山纸业股份有限公司 A kind of high-strength high stretched paper bag process thoroughly of production

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258390A (en) * 1962-10-20 1966-06-28 Domtar Ltd Method and apparatus for maintaining a water balance during impregnation and digestion of cellulosic material
US3448002A (en) * 1964-06-20 1969-06-03 Domtar Ltd Pulping process
US5080755A (en) * 1988-12-20 1992-01-14 Kamyr Ab Process for the continuous digestion of cellulosic fiber material
WO1995032331A1 (en) * 1994-05-24 1995-11-30 Nils Mannbro Sulphidic impregnation of chips for alkaline pulping
US5674359A (en) * 1995-02-08 1997-10-07 Ahlstrom Machinery Inc. Continuous cooking of cellulosic fibrous material with cold alkali impregnation
EP0903436A2 (en) * 1997-09-18 1999-03-24 Kvaerner Pulping Ab Method in connection with impregnation and digestion of lignocellulosic material
US6576084B1 (en) * 1999-09-13 2003-06-10 Andritz Inc. Method of pretreating pulp with yield or strength-enhancing additive
WO2003062524A1 (en) * 2002-01-24 2003-07-31 Kvaerner Pulping Ab Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562096A (en) * 1967-04-21 1971-02-09 Lummus Co Recovery of soap fraction from recycle impregnating cooking liquor in a continuous rapid pulping system
US3814662A (en) * 1969-09-08 1974-06-04 Bauer Bros Co Pulping system with impregnation digester having liquor recirculation and cleaning loop
SE359331B (en) * 1970-03-17 1973-08-27 Kamyr Ab
US5053108A (en) * 1989-06-28 1991-10-01 Kamyr Ab High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips
US5236678A (en) * 1990-08-16 1993-08-17 The Dow Chemical Company Process for absorption of sulfur compounds from fluids using piperidines
FR2670512A1 (en) * 1990-12-17 1992-06-19 Int Patents Corp System for feeding annual plants or wood chips to a continuous cooking reactor under pressure, intended for the production of cellulose pulp
US5476572A (en) * 1994-06-16 1995-12-19 Kamyr, Inc. Chip feeding for a continuous digester
US5660686A (en) * 1994-09-02 1997-08-26 Ahlstrom Machinery Inc. Cooking with spent liquor pretreatment of cellulose material
FI20040637A (en) * 2004-05-05 2005-11-06 Metso Paper Inc Method and apparatus for removing gas from a fragmented material

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258390A (en) * 1962-10-20 1966-06-28 Domtar Ltd Method and apparatus for maintaining a water balance during impregnation and digestion of cellulosic material
US3448002A (en) * 1964-06-20 1969-06-03 Domtar Ltd Pulping process
US5080755A (en) * 1988-12-20 1992-01-14 Kamyr Ab Process for the continuous digestion of cellulosic fiber material
WO1995032331A1 (en) * 1994-05-24 1995-11-30 Nils Mannbro Sulphidic impregnation of chips for alkaline pulping
US5674359A (en) * 1995-02-08 1997-10-07 Ahlstrom Machinery Inc. Continuous cooking of cellulosic fibrous material with cold alkali impregnation
EP0903436A2 (en) * 1997-09-18 1999-03-24 Kvaerner Pulping Ab Method in connection with impregnation and digestion of lignocellulosic material
US6576084B1 (en) * 1999-09-13 2003-06-10 Andritz Inc. Method of pretreating pulp with yield or strength-enhancing additive
WO2003062524A1 (en) * 2002-01-24 2003-07-31 Kvaerner Pulping Ab Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006037860A1 *

Also Published As

Publication number Publication date
CN101068977A (en) 2007-11-07
FI120547B (en) 2009-11-30
FI20041288A0 (en) 2004-10-04
CA2581923A1 (en) 2006-04-13
WO2006037860A1 (en) 2006-04-13
FI20041288A (en) 2006-04-05
CN101068977B (en) 2011-05-11
EP1797235A1 (en) 2007-06-20
US20070256801A1 (en) 2007-11-08

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Legal Events

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DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20100908

RIC1 Information provided on ipc code assigned before grant

Ipc: D21C 1/06 20060101AFI20060822BHEP

17Q First examination report despatched

Effective date: 20130131

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VALMET TECHNOLOGIES, INC.

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 20151110