EP3380667A4 - Method and system for oxygen delignification of cellulose pulp - Google Patents

Method and system for oxygen delignification of cellulose pulp Download PDF

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Publication number
EP3380667A4
EP3380667A4 EP16868982.6A EP16868982A EP3380667A4 EP 3380667 A4 EP3380667 A4 EP 3380667A4 EP 16868982 A EP16868982 A EP 16868982A EP 3380667 A4 EP3380667 A4 EP 3380667A4
Authority
EP
European Patent Office
Prior art keywords
cellulose pulp
oxygen delignification
delignification
oxygen
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.)
Granted
Application number
EP16868982.6A
Other languages
German (de)
French (fr)
Other versions
EP3380667B1 (en
EP3380667A1 (en
Inventor
Håkan DAHLLÖF
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 EP3380667A1 publication Critical patent/EP3380667A1/en
Publication of EP3380667A4 publication Critical patent/EP3380667A4/en
Application granted granted Critical
Publication of EP3380667B1 publication Critical patent/EP3380667B1/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
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
EP16868982.6A 2015-11-27 2016-11-16 Method and system for oxygen delignification of cellulose pulp Active EP3380667B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1551539A SE540043C2 (en) 2015-11-27 2015-11-27 Method and system for oxygen delignification of cellulose pulp
PCT/SE2016/051128 WO2017091129A1 (en) 2015-11-27 2016-11-16 Method and system for oxygen delignification of cellulose pulp

Publications (3)

Publication Number Publication Date
EP3380667A1 EP3380667A1 (en) 2018-10-03
EP3380667A4 true EP3380667A4 (en) 2019-04-17
EP3380667B1 EP3380667B1 (en) 2020-01-08

Family

ID=58763870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16868982.6A Active EP3380667B1 (en) 2015-11-27 2016-11-16 Method and system for oxygen delignification of cellulose pulp

Country Status (4)

Country Link
EP (1) EP3380667B1 (en)
BR (1) BR112018005525B1 (en)
SE (1) SE540043C2 (en)
WO (1) WO2017091129A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020002445A1 (en) 2020-04-23 2021-10-28 Messer Austria Gmbh Method and device for the production of bleached pulp

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946555A (en) * 1989-01-19 1990-08-07 Canadian Liquid Air Ltd./Air Liquide Canada Apparatus and method for measuring vent gas flow rates and parameters in pulp and paper processing
US5916415A (en) * 1995-12-07 1999-06-29 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry
EP1061173A1 (en) * 1999-06-14 2000-12-20 Praxair Technology, Inc. Oxygen delignification of lignocellulosic material
US20010050152A1 (en) * 1996-03-26 2001-12-13 Kjell Forslund Oxygen delignification of pulp in two stages
US6391152B1 (en) * 1999-07-06 2002-05-21 Kvaerner Pulping Ab Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage
US6514380B1 (en) * 1995-03-08 2003-02-04 Andritz Oy Treatment of chemical pulp
US20050061460A1 (en) * 2003-09-24 2005-03-24 Martin Ragnar Method and arrangement for oxygen delignification of cellulose pulp
WO2006071163A1 (en) * 2004-12-30 2006-07-06 Kvaerner Pulping Ab Method for oxygen delignification of cellulose pulp by mixing of chemicals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384920A (en) * 1981-04-06 1983-05-24 The Black Clawson Company Method and apparatus for oxygen delignification
SE505147C2 (en) * 1995-10-19 1997-06-30 Sunds Defibrator Ind Ab Oxygen delignification of pulp in a first HC stage and a second MC stage
FI955519A (en) * 1995-11-16 1997-05-17 Ahlstrom Machinery Oy Method and apparatus for delignifying chemical pulp
EP0891439A1 (en) * 1996-03-26 1999-01-20 Sunds Defibrator Industries Aktiebolag Oxygen delignification of pulp in two stages
SE526843C2 (en) * 2004-12-30 2005-11-08 Kvaerner Pulping Tech Continuous alkaline oxygen delignification of pulp, using multi reactor system with high pressure reactor part

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946555A (en) * 1989-01-19 1990-08-07 Canadian Liquid Air Ltd./Air Liquide Canada Apparatus and method for measuring vent gas flow rates and parameters in pulp and paper processing
US6514380B1 (en) * 1995-03-08 2003-02-04 Andritz Oy Treatment of chemical pulp
US5916415A (en) * 1995-12-07 1999-06-29 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry
US20010050152A1 (en) * 1996-03-26 2001-12-13 Kjell Forslund Oxygen delignification of pulp in two stages
EP1061173A1 (en) * 1999-06-14 2000-12-20 Praxair Technology, Inc. Oxygen delignification of lignocellulosic material
US6391152B1 (en) * 1999-07-06 2002-05-21 Kvaerner Pulping Ab Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage
US20050061460A1 (en) * 2003-09-24 2005-03-24 Martin Ragnar Method and arrangement for oxygen delignification of cellulose pulp
WO2006071163A1 (en) * 2004-12-30 2006-07-06 Kvaerner Pulping Ab Method for oxygen delignification of cellulose pulp by mixing of chemicals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2017091129A1 *

Also Published As

Publication number Publication date
SE1551539A1 (en) 2017-05-28
BR112018005525B1 (en) 2022-03-29
EP3380667B1 (en) 2020-01-08
SE540043C2 (en) 2018-03-06
BR112018005525A2 (en) 2018-10-09
WO2017091129A1 (en) 2017-06-01
EP3380667A1 (en) 2018-10-03

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