EP0334398A3 - Verfahren zur Verminderung von Ablagerungen in Anlagen zur Eindampfung von Sulfitablaugen - Google Patents

Verfahren zur Verminderung von Ablagerungen in Anlagen zur Eindampfung von Sulfitablaugen Download PDF

Info

Publication number
EP0334398A3
EP0334398A3 EP19890200066 EP89200066A EP0334398A3 EP 0334398 A3 EP0334398 A3 EP 0334398A3 EP 19890200066 EP19890200066 EP 19890200066 EP 89200066 A EP89200066 A EP 89200066A EP 0334398 A3 EP0334398 A3 EP 0334398A3
Authority
EP
European Patent Office
Prior art keywords
waste liquor
evaporation
stage
aqueous solution
sulphite waste
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Withdrawn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
EP19890200066
Other languages
English (en)
French (fr)
Other versions
EP0334398A2 (de
Inventor
Manfred Henn
Klaus Begerow
Volker Wichert
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.)
Grace Service Chemicals GmbH
Original Assignee
Grace Service Chemicals GmbH
Metallgesellschaft AG
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 Grace Service Chemicals GmbH, Metallgesellschaft AG filed Critical Grace Service Chemicals GmbH
Publication of EP0334398A2 publication Critical patent/EP0334398A2/de
Publication of EP0334398A3 publication Critical patent/EP0334398A3/de
Withdrawn legal-status Critical Current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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/02—Regeneration of pulp liquors or effluent waste waters of acid, neutral or alkaline sulfite 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
    • D21C11/10—Concentrating spent liquor by evaporation
    • D21C11/106—Prevention of incrustations on heating surfaces during the concentration, e.g. by elimination of the scale-forming substances contained in the liquors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/13—Scale
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/928—Paper mill waste, e.g. white water, black liquor treated

Landscapes

  • Detergent Compositions (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Seal Device For Vehicle (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Paper (AREA)

Abstract

Um Ablagerungen in Anlagen zur Eindampfung von Sulfitablaugen zu unterbinden und die Eindampfkapazität zu erhöhen wird in der Eingangsstufe (8) der mehrstufigen Eindampfung kontinuierlich eine wäßrige Lösung von niedermolekularer Polyacrylsäure und mindestens in einer weiteren Stufe (9) der mehrstufigen Eindampfung eine wäßrige Lösung eines Copolymerisats aus sulfoniertem Styrol und Maleinsäurenhydrid oder eine wäßrige Lösung von niedermolekularer Polyacrylsäure der Sulfitablauge zugesetzt.
EP19890200066 1988-03-23 1989-01-13 Verfahren zur Verminderung von Ablagerungen in Anlagen zur Eindampfung von Sulfitablaugen Withdrawn EP0334398A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3809663 1988-03-23
DE3809663A DE3809663A1 (de) 1988-03-23 1988-03-23 Verfahren zur verminderung von ablagerungen in anlagen zur eindampfung von sulfitablaugen

Publications (2)

Publication Number Publication Date
EP0334398A2 EP0334398A2 (de) 1989-09-27
EP0334398A3 true EP0334398A3 (de) 1991-08-28

Family

ID=6350404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890200066 Withdrawn EP0334398A3 (de) 1988-03-23 1989-01-13 Verfahren zur Verminderung von Ablagerungen in Anlagen zur Eindampfung von Sulfitablaugen

Country Status (7)

Country Link
US (1) US4941946A (de)
EP (1) EP0334398A3 (de)
CA (1) CA1307878C (de)
DE (1) DE3809663A1 (de)
FI (1) FI890233A (de)
IN (1) IN169988B (de)
NO (1) NO885491L (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320757A (en) * 1993-04-05 1994-06-14 Betz Laboratories, Inc. Method of inhibiting calcium oxalate scale deposition
DE19529052C1 (de) * 1995-07-31 1996-10-02 Grace W R & Co Verfahren und Mittel zur Inhibierung von Ablagerungen in Eindampfern zur Konzentrierung von Schwarzlauge
US6310031B1 (en) 1999-11-30 2001-10-30 Amway Corporation Method of inhibiting soil redeposition
DE19959826A1 (de) * 1999-12-10 2001-06-28 Stockhausen Chem Fab Gmbh Verfahren zur Verminderung und/oder Vermeidung von Ablagerungen von Holzinhaltsstoffen
SE529386C2 (sv) * 2006-11-07 2007-07-24 Metso Power Ab Sätt och anläggning för indunstning av svartlut som erhålles från en kokprocess vid tillverkning av cellulosamassa
US7985318B2 (en) 2007-05-10 2011-07-26 Nalco Company Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators
EP3091123A1 (de) 2015-05-08 2016-11-09 Siemens Aktiengesellschaft Verfahren und vorrichtung zur erhöhung eines feststoffgehalts bei einem grundstoff, steuereinrichtung, anlage zur bearbeitung eines grundstoffs und papierfabrik
CN108404438B (zh) * 2018-02-06 2021-03-16 刘小亮 一种改进型自然外循环三效真空连续蒸发罐

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516910A (en) * 1967-05-12 1970-06-23 Grace W R & Co Removing and inhibiting scale in black liquor evaporators
US4263092A (en) * 1979-08-16 1981-04-21 Betz Laboratories, Inc. Method for treating black liquor using acrylic acid polymer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1218952A (en) * 1967-04-21 1971-01-13 Grace W R & Co Treatment of saline water to inhibit scale formation
US4288327A (en) * 1975-09-08 1981-09-08 Betz Laboratories, Inc. Copolymers for the control of the formation and deposition of materials in aqueous mediums
JPS5355490A (en) * 1976-10-29 1978-05-19 Kurita Water Ind Ltd Scale inhibitor for sulfite pulp red liquor evaporator
US4262092A (en) * 1979-05-08 1981-04-14 Ethyl Corporation Process for producing N-acyl-D-phenylalanine ester
US4255309A (en) * 1979-08-16 1981-03-10 Betz Laboratories, Inc. Polyacrylic acids and methyl vinyl ether/maleic anhydride copolymers as soft scale inhibitors
US4282178A (en) * 1979-11-15 1981-08-04 Vulcan Materials Company Use of hydrazine compounds as corrosion inhibitors in caustic solutions
GB2181735A (en) * 1985-10-16 1987-04-29 Kao Corp Maleic acid polymer for use as scale inhibitor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516910A (en) * 1967-05-12 1970-06-23 Grace W R & Co Removing and inhibiting scale in black liquor evaporators
US4263092A (en) * 1979-08-16 1981-04-21 Betz Laboratories, Inc. Method for treating black liquor using acrylic acid polymer

Also Published As

Publication number Publication date
EP0334398A2 (de) 1989-09-27
FI890233A (fi) 1989-09-24
NO885491D0 (no) 1988-12-09
NO885491L (no) 1989-09-25
FI890233A0 (fi) 1989-01-17
IN169988B (de) 1992-01-25
CA1307878C (en) 1992-09-29
US4941946A (en) 1990-07-17
DE3809663A1 (de) 1989-10-12

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