EP3377696A4 - Method for heating cellulosic material to full cooking temperature in digesters - Google Patents

Method for heating cellulosic material to full cooking temperature in digesters Download PDF

Info

Publication number
EP3377696A4
EP3377696A4 EP16866744.2A EP16866744A EP3377696A4 EP 3377696 A4 EP3377696 A4 EP 3377696A4 EP 16866744 A EP16866744 A EP 16866744A EP 3377696 A4 EP3377696 A4 EP 3377696A4
Authority
EP
European Patent Office
Prior art keywords
digesters
cellulosic material
cooking temperature
full cooking
heating cellulosic
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Withdrawn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
EP16866744.2A
Other languages
German (de)
French (fr)
Other versions
EP3377696A1 (en
Inventor
Krister Olsson
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
Valmet AB
Original Assignee
Valmet Oy
Valmet 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
Application filed by Valmet Oy, Valmet AB filed Critical Valmet Oy
Publication of EP3377696A1 publication Critical patent/EP3377696A1/en
Publication of EP3377696A4 publication Critical patent/EP3377696A4/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Withdrawn legal-status Critical Current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
    • D21C7/00—Digesters
    • D21C7/10—Heating devices
    • 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
    • D21C11/10—Concentrating spent liquor by evaporation
    • 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
    • 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
    • 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
    • D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
    • D21C11/0092—Substances modifying the evaporation, combustion, or thermal decomposition processes of black liquor
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Control Of Turbines (AREA)
EP16866744.2A 2015-11-16 2016-10-18 Method for heating cellulosic material to full cooking temperature in digesters Withdrawn EP3377696A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1551483A SE539449C2 (en) 2015-11-16 2015-11-16 Method for heating cellulosic material to full cooking temperature in digesters
PCT/SE2016/051013 WO2017086856A1 (en) 2015-11-16 2016-10-18 Method for heating cellulosic material to full cooking temperature in digesters

Publications (2)

Publication Number Publication Date
EP3377696A1 EP3377696A1 (en) 2018-09-26
EP3377696A4 true EP3377696A4 (en) 2019-08-21

Family

ID=58719098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16866744.2A Withdrawn EP3377696A4 (en) 2015-11-16 2016-10-18 Method for heating cellulosic material to full cooking temperature in digesters

Country Status (3)

Country Link
EP (1) EP3377696A4 (en)
SE (1) SE539449C2 (en)
WO (1) WO2017086856A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE545465C2 (en) * 2019-12-02 2023-09-19 Valmet Oy Method and arrangement for adding treatment liquors to cellulose raw material in a continuous process using down flow vessels

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897157A (en) * 1986-07-08 1990-01-30 Kamyr, Inc. Make-up liquor and black liquor evaporating processing during pulp production
WO1996032531A1 (en) * 1995-04-10 1996-10-17 Ahlstrom Machinery, Inc Heat recovery from spent digester cooking liquor
WO2006037860A1 (en) * 2004-10-04 2006-04-13 Metso Paper, Inc. Improved alkaline process and system for producing pulp
WO2007073333A1 (en) * 2005-12-21 2007-06-28 Metso Fiber Karlstad Ab System and method for the generation of steam from hot black liquor in a digester plant
WO2008057040A1 (en) * 2006-11-07 2008-05-15 Metso Fiber Karlstad Ab Method for an energy efficient production of cellulose pulp in a continuous digester
WO2015132469A1 (en) * 2014-03-05 2015-09-11 Andritz Oy Method and arrangement for generating steam at a digester plant of a chemical pulp mill

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1097465A (en) * 1976-11-30 1981-03-17 James R. Prough Black liquor energy recovery
SE453673B (en) * 1985-07-02 1988-02-22 Kamyr Ab SEE CONTINUOUS COOKING TO HEAT THE FIBER MATERIAL AT THE COOKER'S TOP
US5213662A (en) * 1991-08-14 1993-05-25 Kamyr, Inc. Treatment of chips with high temperature black liquor to reduce black liquor viscosity
JP2005256224A (en) * 2004-03-12 2005-09-22 Daio Paper Corp Method of digestion using columnar vessel type continuous digester
FI122983B (en) * 2009-02-09 2012-09-28 Andritz Inc A process for steam generation at a pulp mill digester
US8986504B1 (en) * 2013-10-25 2015-03-24 International Paper Company Digester apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897157A (en) * 1986-07-08 1990-01-30 Kamyr, Inc. Make-up liquor and black liquor evaporating processing during pulp production
WO1996032531A1 (en) * 1995-04-10 1996-10-17 Ahlstrom Machinery, Inc Heat recovery from spent digester cooking liquor
WO2006037860A1 (en) * 2004-10-04 2006-04-13 Metso Paper, Inc. Improved alkaline process and system for producing pulp
WO2007073333A1 (en) * 2005-12-21 2007-06-28 Metso Fiber Karlstad Ab System and method for the generation of steam from hot black liquor in a digester plant
WO2008057040A1 (en) * 2006-11-07 2008-05-15 Metso Fiber Karlstad Ab Method for an energy efficient production of cellulose pulp in a continuous digester
WO2015132469A1 (en) * 2014-03-05 2015-09-11 Andritz Oy Method and arrangement for generating steam at a digester plant of a chemical pulp mill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2017086856A1 *

Also Published As

Publication number Publication date
WO2017086856A1 (en) 2017-05-26
SE539449C2 (en) 2017-09-26
EP3377696A1 (en) 2018-09-26
SE1551483A1 (en) 2017-05-17

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