CA2761757C - Method for producing pulp - Google Patents

Method for producing pulp Download PDF

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Publication number
CA2761757C
CA2761757C CA2761757A CA2761757A CA2761757C CA 2761757 C CA2761757 C CA 2761757C CA 2761757 A CA2761757 A CA 2761757A CA 2761757 A CA2761757 A CA 2761757A CA 2761757 C CA2761757 C CA 2761757C
Authority
CA
Canada
Prior art keywords
digester
washing liquid
hot
recovering
prehydrolysis
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.)
Active
Application number
CA2761757A
Other languages
English (en)
French (fr)
Other versions
CA2761757A1 (en
Inventor
Lari Lammi
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
Valmet Technologies 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 Valmet Technologies Oy filed Critical Valmet Technologies Oy
Publication of CA2761757A1 publication Critical patent/CA2761757A1/en
Application granted granted Critical
Publication of CA2761757C publication Critical patent/CA2761757C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters

Landscapes

  • Paper (AREA)
CA2761757A 2010-03-11 2011-03-10 Method for producing pulp Active CA2761757C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20105243A FI123100B (sv) 2010-03-11 2010-03-11 Förfarande för tillvaratagning av biprodukter
FI20105243 2010-03-11
PCT/FI2011/050206 WO2011110746A1 (en) 2010-03-11 2011-03-10 Method for producing pulp

Publications (2)

Publication Number Publication Date
CA2761757A1 CA2761757A1 (en) 2011-09-15
CA2761757C true CA2761757C (en) 2017-10-10

Family

ID=42074359

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2761757A Active CA2761757C (en) 2010-03-11 2011-03-10 Method for producing pulp

Country Status (5)

Country Link
EP (1) EP2430233B1 (sv)
CN (1) CN102472006B (sv)
CA (1) CA2761757C (sv)
FI (1) FI123100B (sv)
WO (1) WO2011110746A1 (sv)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102337693B (zh) * 2011-09-30 2014-01-22 重庆理文造纸有限公司 一种溶解浆的蒸煮及洗涤工艺
SE539706C2 (sv) 2014-11-07 2017-11-07 Valmet Oy Method for recovering hydrolysate
SE538454C2 (sv) 2014-11-27 2016-07-12 Valmet Oy Method for displacement in batch digesters
EP3176320A1 (en) 2015-12-03 2017-06-07 Valmet AB Process to produce a bio-product
BR112018010183B1 (pt) * 2016-02-16 2022-04-05 Valmet Ab Método para recuperar hidrolisado concentrado após hidrólise de material lignocelulósico
SE540305C2 (sv) * 2017-02-07 2018-06-05 Valmet Oy System and method for silica removal in a pulping process
CN109759965B (zh) * 2019-01-28 2020-11-24 江苏启航研磨科技有限公司 一种高柔韧性高硬度砂纸的制备方法
SE1950402A1 (sv) 2019-04-01 2020-10-02 Valmet Oy Method for extracting hemicellulose from lignocellulosic material
SE543924C2 (en) * 2019-04-02 2021-09-28 Valmet Oy A method for extracting hydrolysate in a batch pulp production process
SE1950606A1 (sv) * 2019-05-22 2020-10-13 Valmet Oy A method for extracting hydrolysate, a batch cooking system and a hydrolysate extracting arrangement
SE1950785A1 (sv) * 2019-06-26 2020-11-03 Valmet Oy Method for extracting hemicellulose from lignocellulosic material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788812A (en) * 1985-11-05 1998-08-04 Agar; Richard C. Method of recovering furfural from organic pulping liquor
EP0746650A4 (en) * 1992-01-29 1998-01-07 Alcell Tech Inc REDUCTION OF FIBROUS PLANT MATERIALS AND RECOVERY OF RESULTING BY-PRODUCTS
ATE277222T1 (de) * 1999-02-15 2004-10-15 Kiram Ab Verfahren zum sauerstoff-aufschluss von liganocellulosischen materialien und rückgewinnung von aufschlusschemikalien
FI123036B (sv) 2006-02-10 2012-10-15 Metso Paper Inc Förfarande för tillvaratagande av hydrolysprodukter
FI20065105A0 (sv) * 2006-02-10 2006-02-10 Metso Paper Inc Förfarande för tillvaratagande av hydrolysprodukter

Also Published As

Publication number Publication date
EP2430233A1 (en) 2012-03-21
FI20105243A0 (sv) 2010-03-11
EP2430233B1 (en) 2013-05-08
FI123100B (sv) 2012-11-15
CN102472006B (zh) 2014-10-22
CN102472006A (zh) 2012-05-23
WO2011110746A1 (en) 2011-09-15
FI20105243L (sv) 2011-09-12
CA2761757A1 (en) 2011-09-15

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Effective date: 20160211