EP0828026A1 - Procédé pour l'épuration d'une suspension de fibres primaires - Google Patents

Procédé pour l'épuration d'une suspension de fibres primaires Download PDF

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Publication number
EP0828026A1
EP0828026A1 EP97112005A EP97112005A EP0828026A1 EP 0828026 A1 EP0828026 A1 EP 0828026A1 EP 97112005 A EP97112005 A EP 97112005A EP 97112005 A EP97112005 A EP 97112005A EP 0828026 A1 EP0828026 A1 EP 0828026A1
Authority
EP
European Patent Office
Prior art keywords
flotation
suspension
bleaching
pulp
cleaning
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
EP97112005A
Other languages
German (de)
English (en)
Other versions
EP0828026B1 (fr
Inventor
Volker Dr. Gehr
Martin Kemper
Thomas Martin
Peter Respondek
Peter Schweiss
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.)
Voith Paper Fiber and Environmental Solutions GmbH and Co KG
Original Assignee
Voith Sulzer Stoffaufbereitung GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7804657&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0828026(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Sulzer Stoffaufbereitung GmbH filed Critical Voith Sulzer Stoffaufbereitung GmbH
Priority to EP02000753A priority Critical patent/EP1223245B1/fr
Publication of EP0828026A1 publication Critical patent/EP0828026A1/fr
Application granted granted Critical
Publication of EP0828026B1 publication Critical patent/EP0828026B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21C9/02—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
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means
    • 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
    • D21C9/1026—Other features in bleaching processes

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • Primary fiber is understood to mean e.g. B. chemically produced pulp, mechanically produced wood pulp or mixed forms, such as. B. TMP, CTMP, etc.
  • B. chemically produced pulp such as. B. TMP, CTMP, etc.
  • These primary fibers are made from wood by boiling and bleaching originating lignin components essentially removed. Nevertheless, often remain undesirable, solid, colloidally dissolved or dissolved components, such as. B. resins, Bark particles or small fragments.
  • These components are already being tried at least in part through highly effective sorting and cleaning processes remove; however, such procedures are complex on the one hand and on the other Page not always completely satisfactory. Therefore, it often has to be accepted that the primary fibers are not clean, i.e. the paper made from them Has dirt spots or that this results in poor paper machine runability results.
  • the invention has for its object to a method of the type specified create with which it is possible to reliably remove residual impurities from the to remove suspension containing primary fibers.
  • the purpose of the pulp produced are qualitatively improved and / or the production process becomes more economical let it be designed.
  • the flotation is particularly advantageous in the Primary fiber generation used, for. B. left over in pulp boiling or bleaching to remove remaining interfering components.
  • the fiber behave such impurities hydrophobic. It is also possible to use chemical To make treatment hydrophobic.
  • Another advantage of the process is that of considering the overall economy the pulp production plant in which the process is used. Because through the mentioned possibilities for better removal of unwanted, fine components Requirements for the actual manufacturing and bleaching process kept lower considered overall, there is the possibility of an inexpensive Primary fiber production.
  • Primary fiber production becomes various natural, grown raw materials used in the same batch depending on origin, genus, type, climate, biological conditions, etc. have quite different properties can. In many cases it is therefore only possible with great effort or not at all, e.g. B. to coordinate the cooking process for primary fiber production so that this heterogeneous raw material can be processed optimally, in this context freedom from undesirable components is meant. After all, at the Primary fiber production also other important requirements, such as. B. strength, Fiber length etc. are taken into account, which becomes a very complex Manufacturing process leads.
  • FIG. 1 represents an example of the application of the method will not go into the details of primary pulp production, because it Are already known to a person skilled in the art and a large number of different processes are possible is.
  • the raw material R is added to a pulp cooker 1, in which it is thermally and is chemically converted to pulp P.
  • the cooking process is followed by a thickening stage 2 Partial return of the washed-out lye to the cellulose cooker 1.
  • the thickened Pulp P ' is now in a cleaning stage 3, which is indicated here as a sorting stage, freed from disruptive components. This cleaning level can also be used with others work on known separation processes.
  • the pulp comes in one Bleaching level 4 or a bleaching sequence that can consist of several bleaching levels, where only 4 'is given here as a further one.
  • the substance is diluted with water W and collected in a chest 6.
  • This primary fiber material now enters the suspension S in the Flotation 7, whereby, as shown here by way of example, a further cleaning 3 ' can be subjected, which can advantageously be highly effective cleaners.
  • Flotation 7 shows a selective flotation in this figure, in which the disruptive Impurities are removed together with the foam F and the Primary fiber fibers get into the feed tank 8 together with the water.
  • collected material is after further treatment Suitable for paper production.
  • the thickening stage 9 can advantageously aim for an optimal washing effect.
  • the Clear water 11 of the flotation z. B. can be used again for dilution.
  • the thickened suspension contains the purified primary fiber and is in the Cloth chest 12 collected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP97112005A 1996-09-05 1997-07-15 Procédé pour l'épuration d'une suspension de fibres primaires Expired - Lifetime EP0828026B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02000753A EP1223245B1 (fr) 1996-09-05 1997-07-15 Procédé d'épuration d'une suspension de fibres primaires

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19635967A DE19635967A1 (de) 1996-09-05 1996-09-05 Verfahren zur Reinigung einer Suspension aus Primärfaserstoff
DE19635967 1996-09-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP02000753A Division EP1223245B1 (fr) 1996-09-05 1997-07-15 Procédé d'épuration d'une suspension de fibres primaires

Publications (2)

Publication Number Publication Date
EP0828026A1 true EP0828026A1 (fr) 1998-03-11
EP0828026B1 EP0828026B1 (fr) 2002-10-09

Family

ID=7804657

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97112005A Expired - Lifetime EP0828026B1 (fr) 1996-09-05 1997-07-15 Procédé pour l'épuration d'une suspension de fibres primaires
EP02000753A Revoked EP1223245B1 (fr) 1996-09-05 1997-07-15 Procédé d'épuration d'une suspension de fibres primaires

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP02000753A Revoked EP1223245B1 (fr) 1996-09-05 1997-07-15 Procédé d'épuration d'une suspension de fibres primaires

Country Status (3)

Country Link
EP (2) EP0828026B1 (fr)
AT (2) ATE307923T1 (fr)
DE (3) DE19635967A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107700263A (zh) * 2016-08-08 2018-02-16 迅普精工株式会社 脱墨装置和废纸再生处理装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109629300B (zh) * 2018-12-28 2021-08-24 四川凤生纸业科技股份有限公司 用于纸浆生产线的高效制浆系统及洗浆工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0522334A1 (fr) * 1991-07-12 1993-01-13 Nalco Chemical Company Procédé pour le traitement des effluents de BCTMP/CTMP
DE4317466A1 (de) * 1993-05-26 1994-12-01 Degussa Verbessertes Verfahren zur Bleiche von Holzstoffen
WO1996006978A1 (fr) * 1994-08-31 1996-03-07 Hoffman Environmental Systems, Inc. Procede de fabrication de papier sans aucune decharge de liquides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310554C (fr) *

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0522334A1 (fr) * 1991-07-12 1993-01-13 Nalco Chemical Company Procédé pour le traitement des effluents de BCTMP/CTMP
DE4317466A1 (de) * 1993-05-26 1994-12-01 Degussa Verbessertes Verfahren zur Bleiche von Holzstoffen
WO1996006978A1 (fr) * 1994-08-31 1996-03-07 Hoffman Environmental Systems, Inc. Procede de fabrication de papier sans aucune decharge de liquides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107700263A (zh) * 2016-08-08 2018-02-16 迅普精工株式会社 脱墨装置和废纸再生处理装置
CN107700263B (zh) * 2016-08-08 2020-10-09 迅普精工株式会社 脱墨装置和废纸再生处理装置

Also Published As

Publication number Publication date
DE59708425D1 (de) 2002-11-14
EP1223245A2 (fr) 2002-07-17
DE19635967A1 (de) 1998-03-12
EP0828026B1 (fr) 2002-10-09
DE59712461D1 (de) 2005-12-01
ATE307923T1 (de) 2005-11-15
ATE225878T1 (de) 2002-10-15
EP1223245A3 (fr) 2004-06-02
EP1223245B1 (fr) 2005-10-26

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