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FI20002586A7 - Alkaline batch cooking method for fibrous material - Google Patents

Alkaline batch cooking method for fibrous material Download PDF

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Publication number
FI20002586A7
FI20002586A7 FI20002586A FI20002586A FI20002586A7 FI 20002586 A7 FI20002586 A7 FI 20002586A7 FI 20002586 A FI20002586 A FI 20002586A FI 20002586 A FI20002586 A FI 20002586A FI 20002586 A7 FI20002586 A7 FI 20002586A7
Authority
FI
Finland
Prior art keywords
fibrous material
cooking method
digester
batch cooking
during
Prior art date
Application number
FI20002586A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20002586A0 (en
FI20002586L (en
Inventor
Thomas Fant
Mikael Svedman
Lari Lammi
Original Assignee
Metso Paper Inc
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 Inc filed Critical Metso Paper Inc
Priority to FI20002586A priority Critical patent/FI20002586A7/en
Publication of FI20002586A0 publication Critical patent/FI20002586A0/en
Priority to AU2002223715A priority patent/AU2002223715A1/en
Priority to EP01997587A priority patent/EP1339913A1/en
Priority to US10/432,656 priority patent/US20040089431A1/en
Priority to PCT/FI2001/001010 priority patent/WO2002042551A1/en
Publication of FI20002586L publication Critical patent/FI20002586L/en
Publication of FI20002586A7 publication Critical patent/FI20002586A7/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
    • D21C1/06—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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Paper (AREA)

Abstract

Jatkuvatoiminen, alkalinen prosessi massan tuottamiseksi puuhakkeesta, missä esilämmitetty hake käsitellään pidennetyssä kyllästysvaiheessa keittimen ulkopuolella ainakin 60 min ajan, edullisesti kauemmin, lämpötilassa joka ei ylitä kyllästyslipeän kiehumispistettä ilmakehän paineessa, sekä keittimessä tapahtuvassa nopeassa lämmitys- ja keittojaksossa jonka kesto on alle noin 90 min, edullisesti vähemmän, jonka jälkeen tapahtuu jäähdytys reaktiolämpötilaa alhaisempaan lämpötilaan. Tuoretta alkalia lisätään sekä kyllästysvaiheessa että lämmitys/keittojakson aikana.A continuous alkaline process for producing pulp from wood chips, wherein preheated chips are subjected to an extended impregnation step outside the digester for at least 60 min, preferably longer, at a temperature not exceeding the boiling point of the impregnation liquor at atmospheric pressure, and a rapid heating and cooking cycle in the digester for less than about 90 min, preferably less, followed by cooling to a temperature below the reaction temperature. Fresh alkali is added both during the impregnation step and during the heating/cooking cycle.

FI20002586A 2000-11-24 2000-11-24 Alkaline batch cooking method for fibrous material FI20002586A7 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI20002586A FI20002586A7 (en) 2000-11-24 2000-11-24 Alkaline batch cooking method for fibrous material
AU2002223715A AU2002223715A1 (en) 2000-11-24 2001-11-21 Method for alkaline batch cooking of fiber material
EP01997587A EP1339913A1 (en) 2000-11-24 2001-11-21 Method for alkaline batch cooking of fiber material
US10/432,656 US20040089431A1 (en) 2000-11-24 2001-11-21 Method for alkaline batch cooking of fiber material
PCT/FI2001/001010 WO2002042551A1 (en) 2000-11-24 2001-11-21 Method for alkaline batch cooking of fiber material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20002586A FI20002586A7 (en) 2000-11-24 2000-11-24 Alkaline batch cooking method for fibrous material

Publications (3)

Publication Number Publication Date
FI20002586A0 FI20002586A0 (en) 2000-11-24
FI20002586L FI20002586L (en) 2002-05-25
FI20002586A7 true FI20002586A7 (en) 2002-05-25

Family

ID=8559576

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20002586A FI20002586A7 (en) 2000-11-24 2000-11-24 Alkaline batch cooking method for fibrous material

Country Status (5)

Country Link
US (1) US20040089431A1 (en)
EP (1) EP1339913A1 (en)
AU (1) AU2002223715A1 (en)
FI (1) FI20002586A7 (en)
WO (1) WO2002042551A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20002587A7 (en) * 2000-11-24 2002-05-25 Metso Paper Inc Alkaline cooking method for fibrous material
FI20070126A0 (en) * 2006-09-08 2007-02-13 Linde Ag Process for de-pulping and using carbon dioxide or (bi) carbonate for this
PT2504486E (en) * 2009-11-24 2015-06-16 Andritz Inc Method and system for thin chip digester cooking
AU2010202496B2 (en) * 2010-05-04 2015-04-16 Bahia Specialty Cellulose Sa Method and system for high alpha dissolving pulp production
KR20110123184A (en) 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 Method and system for producing high alpha dissolving pulp
CA2744250C (en) * 2010-05-04 2016-10-11 Bahia Specialty Cellulose Sa Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse
WO2012006396A1 (en) * 2010-07-07 2012-01-12 Andritz Inc. Chip feed and steaming system and method for batch digester
US8709204B1 (en) * 2013-03-14 2014-04-29 Veolia Water Solutions & Technologies North America Inc. System and process for recovering heat from weak black liquor in a wood pulping process
CN103352385B (en) * 2013-06-28 2014-08-06 汶瑞机械(山东)有限公司 Energy-saving and environment-friendly displacement cooking process for wood and bamboo raw materials
US9644317B2 (en) 2014-11-26 2017-05-09 International Paper Company Continuous digester and feeding system
EP3697961A1 (en) * 2017-10-17 2020-08-26 Auburn University Phenols as additives in kraft pulping
FI130568B (en) 2020-07-06 2023-11-21 Amppc Finland Oy A cooking method
US12234602B2 (en) * 2022-05-17 2025-02-25 Bracell Bahia Specialty Cellulose SA Apparatuses, methods and systems for yield increase in a kraft cooking plant
CN115305738A (en) * 2022-08-22 2022-11-08 华南理工大学 LCP cleaning pulping method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215588A (en) * 1963-08-15 1965-11-02 Lummus Co Continuous impregnation, cooking, and washing of fibrous material
US3664918A (en) * 1969-12-09 1972-05-23 Pulp Paper Res Inst Vapor phase pulping of water saturated lignocellulosic materials
US4190490A (en) * 1974-04-03 1980-02-26 Domtar Inc. Impregnation and digestion of wood chips
US5183535B1 (en) * 1990-02-09 1996-02-06 Sunds Defibrator Rauma Oy Process for preparing kraft pulp using black liquor pretreatment reaction
FI93866B (en) * 1990-02-09 1995-02-28 Sunds Defibrator Rauma Oy Process for the preparation of sulphate pulp
US6248208B1 (en) * 1995-06-02 2001-06-19 Andritz-Ahlstrom Inc. Pretreatment of chips before cooking
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
EP1339913A1 (en) 2003-09-03
US20040089431A1 (en) 2004-05-13
FI20002586A0 (en) 2000-11-24
WO2002042551A1 (en) 2002-05-30
FI20002586L (en) 2002-05-25
AU2002223715A1 (en) 2002-06-03

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