EP3215672A4 - Method for operating a two vessel digester system - Google Patents

Method for operating a two vessel digester system Download PDF

Info

Publication number
EP3215672A4
EP3215672A4 EP15857624.9A EP15857624A EP3215672A4 EP 3215672 A4 EP3215672 A4 EP 3215672A4 EP 15857624 A EP15857624 A EP 15857624A EP 3215672 A4 EP3215672 A4 EP 3215672A4
Authority
EP
European Patent Office
Prior art keywords
operating
digester system
vessel digester
vessel
digester
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
EP15857624.9A
Other languages
German (de)
French (fr)
Other versions
EP3215672A1 (en
EP3215672B1 (en
Inventor
Fredrik Wilgotson
Magnus Hägglund
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 EP3215672A1 publication Critical patent/EP3215672A1/en
Publication of EP3215672A4 publication Critical patent/EP3215672A4/en
Application granted granted Critical
Publication of EP3215672B1 publication Critical patent/EP3215672B1/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
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • D21C11/0028—Effluents derived from the washing or bleaching plants
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
EP15857624.9A 2014-11-07 2015-11-04 Method for operating a two vessel digester system Active EP3215672B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1451340A SE538452C2 (en) 2014-11-07 2014-11-07 Method for operating a two vessel digester system
PCT/SE2015/051161 WO2016072919A1 (en) 2014-11-07 2015-11-04 Method for operating a two vessel digester system

Publications (3)

Publication Number Publication Date
EP3215672A1 EP3215672A1 (en) 2017-09-13
EP3215672A4 true EP3215672A4 (en) 2018-05-02
EP3215672B1 EP3215672B1 (en) 2019-01-23

Family

ID=55909499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15857624.9A Active EP3215672B1 (en) 2014-11-07 2015-11-04 Method for operating a two vessel digester system

Country Status (5)

Country Link
EP (1) EP3215672B1 (en)
BR (1) BR112017009620B1 (en)
CL (1) CL2017001066A1 (en)
SE (1) SE538452C2 (en)
WO (1) WO2016072919A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109312537A (en) * 2016-05-27 2019-02-05 维美德公司 Dual alkali charging for tablet dipping

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536366A (en) * 1993-05-04 1996-07-16 Ahlstrom Machinery Inc. Digester system for implementing low dissolved solids profiling
US5522958A (en) * 1994-07-18 1996-06-04 Pulp And Paper Research Institute Of Canada Two-stage kraft cooking
US6468390B1 (en) * 1998-08-24 2002-10-22 Kvaerner Pulping Ab Method for continuous cooking of lignocellulosic fiber material
FI990127A0 (en) * 1999-01-22 1999-01-22 Ahlstrom Machinery Oy Process for treating pulp
SE518957C2 (en) * 2002-01-24 2002-12-10 Kvaerner Pulping Tech Process for increasing the heating economy of the boiler system during continuous boiling
FI123023B (en) * 2009-09-01 2012-10-15 Andritz Oy Method and apparatus for separating soap

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *

Also Published As

Publication number Publication date
EP3215672A1 (en) 2017-09-13
BR112017009620B1 (en) 2022-04-12
EP3215672B1 (en) 2019-01-23
CL2017001066A1 (en) 2017-12-29
SE1451340A1 (en) 2016-05-08
SE538452C2 (en) 2016-07-05
BR112017009620A2 (en) 2017-12-19
WO2016072919A1 (en) 2016-05-12

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