EP0302166A1 - Verfahren zur Flotation von Füllstoffen aus Papierkreislaufwässern - Google Patents

Verfahren zur Flotation von Füllstoffen aus Papierkreislaufwässern Download PDF

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Publication number
EP0302166A1
EP0302166A1 EP88103506A EP88103506A EP0302166A1 EP 0302166 A1 EP0302166 A1 EP 0302166A1 EP 88103506 A EP88103506 A EP 88103506A EP 88103506 A EP88103506 A EP 88103506A EP 0302166 A1 EP0302166 A1 EP 0302166A1
Authority
EP
European Patent Office
Prior art keywords
water
paper
metal ions
trivalent metal
soluble salts
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Withdrawn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
EP88103506A
Other languages
German (de)
English (en)
French (fr)
Inventor
Klaus Hornfeck
Wolfgang Dr. Von Rybinski
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0302166A1 publication Critical patent/EP0302166A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/002—Inorganic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/012—Organic compounds containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors

Definitions

  • the invention relates to a process for the flotation of fillers from paper cycle waters and the use of water-soluble salts of trivalent metal ions for the flotation of fillers from paper cycle waters.
  • Paper fibers and auxiliaries for example fillers, glues, dyes, defoamers and / or dispersants, which get into the circulating water during papermaking, are removed from the circulating water by filtration, flotation or sedimentation processes. Fiber and filler particles are often separated by flotation, in which air is forced or sucked through the circulating water of the paper machine. Small air bubbles combine with the fiber and filler particles and form a foam on the water surface, which is removed with cloth scraper.
  • Paper fibers and auxiliaries for example fillers, glues, dyes, defoamers and / or dispersants, which get into the circulating water during papermaking, are removed from the circulating water by filtration, flotation or sedimentation processes. Fiber and filler particles are often separated by flotation, in which air is forced or sucked through the circulating water of the paper machine. Small air bubbles combine with the fiber and filler particles and form a foam on the water surface, which is removed with cloth scraper.
  • the object of the invention was therefore to develop a method with which it is possible to increase the filler discharge from paper circulation waters.
  • the invention is based on the surprising finding that the ash removal, i.e. the separation of fillers from paper circulating water can be increased considerably if the paper circulating water is floated by adding water-soluble salts of trivalent metal ions.
  • Another object of the invention is the use of water-soluble salts of trivalent metal ions for the de-ashing of paper cycle water.
  • Fillers frequently used in the paper industry are, for example, aluminum silicates, such as kaolins or silica Alumina, calcium carbonates, such as chalk or lime, talc, calcium sulfate and / or barium sulfate.
  • the pH of the process according to the invention is preferably between 6 and 8. This pH in the paper circulation waters is adjusted by adding water-soluble salts of trivalent metal ions. 0.05 to 1 g, particularly preferably 0.2 to 0.5 g, of water-soluble salts of trivalent metal ions per liter of circulating water are preferably used. Water-soluble sulfates, chlorides, acetates, hydroxides, phosphates and / or polyphosphates of trivalent metal ions, in particular chromium (III) sulfate, aluminum sulfate and / or iron sulfate are suitable as water-soluble salts of trivalent metal ions for the process according to the invention. Aluminum sulfate is particularly preferred.
  • the subsequent flotation is carried out with 5 to 100 g, preferably with 20 to 40 g of anionic surfactants per m3 of circulating water as a collector.
  • Particularly suitable anionic surfactants are C8 ⁇ 24 alkyl sulfates, prepared by reacting C8 ⁇ 24 alcohols, for example lauryl alcohol or tallow fatty alcohol with oleum, amidosulfonic acid, chlorosulfonic acid or sulfur trioxide, C8 ⁇ 24 alkyl ether sulfates, prepared by reacting C8 ⁇ 24 alcohols with 1 to 100 moles of ethylene oxide (EO) and subsequent sulfation with oleum, amidosulfonic acid, chlorosulfonic acid or sulfur trioxide, for example lauryl alcohol + 30 EO sulfate, C3 ⁇ 24 alkylphenol ether sulfates, prepared by reacting mono-, di- or trialkylphenol with 1 to 100 Mol ethylene oxide and subsequent sulfation with oleum, amidosulfonic acid, chlorosulfonic acid or sulfur trioxide, for example nonylphenol + 4 EO sulfate, C8 ⁇ 24-alkyl
  • C3 ⁇ 8-alkylnaphthalenesulfonates prepared by reacting C3 ⁇ 8-alcohols with naphthalene in the presence concentrated sulfuric acid or oleum, secondary alkanesulfonates, produced by sulfonation or sulfoxidation of paraffin hydrocarbons and / or sulfated and / or sulfonated triglycerides, for example sulfated castor oil.
  • the anionic surfactants are in the form of their water-soluble alkali and / or ammonium salts, in particular in the form of their sodium and / or ammonium salts.
  • alkyl stands for straight and / or branched, saturated and / or unsaturated alkyl radicals of natural and / or synthetic origin.
  • preferably 0.05 to 1 g, particularly preferably 0.2 to 0.5 g, of water-soluble salts of trivalent metal ions per liter of paper circulation water are added to the paper circulation waters at 20 to 60 ° C., so that a pH between 4.5 and 9, preferably between 6 and 8, and after the addition of 5 to 100 g, preferably 20 to 40 g of anionic surfactants per m3 of circulating water between 20 ° C. and 95 ° C., preferably between 45 and 60 ° C floats.
  • at least 70% by weight of the total filler content can be discharged from paper circulation water.
  • a paper cycle water from the deinking plant with a filler content of 1.2 g / l was floated at 45 ° C in Denver laboratory flotation cells after the addition of sodium C12 ⁇ 1 ⁇ -alkylbenzenesulfonate as an anionic collector and AL2 (SO4) 3 as an activator.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
EP88103506A 1987-07-16 1988-03-07 Verfahren zur Flotation von Füllstoffen aus Papierkreislaufwässern Withdrawn EP0302166A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873723500 DE3723500A1 (de) 1987-07-16 1987-07-16 Verfahren zur flotation von fuellstoffen aus papierkreislaufwaessern
DE3723500 1987-07-16

Publications (1)

Publication Number Publication Date
EP0302166A1 true EP0302166A1 (de) 1989-02-08

Family

ID=6331678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103506A Withdrawn EP0302166A1 (de) 1987-07-16 1988-03-07 Verfahren zur Flotation von Füllstoffen aus Papierkreislaufwässern

Country Status (11)

Country Link
EP (1) EP0302166A1 (no)
JP (1) JPS6433292A (no)
AU (1) AU601823B2 (no)
CS (1) CS272785B2 (no)
DE (1) DE3723500A1 (no)
DK (1) DK136388A (no)
FI (1) FI881183A (no)
HU (1) HUT53031A (no)
NO (1) NO880697L (no)
PL (1) PL271189A1 (no)
YU (1) YU45490B (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794118A1 (fr) * 1999-05-28 2000-12-01 Rhodia Chimie Sa Application de complexes amphiphiles cationiques particuliers au conditionnement de boues
FR2794035A1 (fr) * 1999-05-28 2000-12-01 Rhodia Chimie Sa Nouveaux complexes amphiphiles cationiques et leur application en milieux aqueux

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053946A (no) *
GB1177003A (en) * 1966-03-09 1970-01-07 Nalco Chemical Co Method of improving Operational Efficiency of White-Water-Recovery Systems
DE1636335A1 (de) * 1964-11-10 1971-05-27 Zschimmer & Schwarz Verfahren zur Reinigung von Papierstoff enthaltenden Waessern durch Flotation oder Sedimentation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053946A (no) *
DE1636335A1 (de) * 1964-11-10 1971-05-27 Zschimmer & Schwarz Verfahren zur Reinigung von Papierstoff enthaltenden Waessern durch Flotation oder Sedimentation
GB1177003A (en) * 1966-03-09 1970-01-07 Nalco Chemical Co Method of improving Operational Efficiency of White-Water-Recovery Systems

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, Band 56, Nr. 6, Dezember 1985, Seite 740, Zusammenfassung Nr. 6655, Appleton, Wisconsin, US; V. VULCHEV et al.: "Intensifying fiber precipitation in effluents in the manufacture of multi-ply board" *
CHEMICAL ABSTRACTS, Band 91, Nr. 6, 6. August 1979, Zusammenfassung Nr. 41117r, Seite 89, Columbus, Ohio, US; & JP-A-79 35 889 (NIKKI K.K.) 16-03-1979 *
J.P. CASEY: "Pulp and Paper. Chemistry and Chemical Technology", Band 11, Ausgabe 3, 1980, Seiten 1177-1214, John Wiley & Sons, New York, US; A.M. SPRINGER et al.: "Environmental control","Water Pollution" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794118A1 (fr) * 1999-05-28 2000-12-01 Rhodia Chimie Sa Application de complexes amphiphiles cationiques particuliers au conditionnement de boues
FR2794035A1 (fr) * 1999-05-28 2000-12-01 Rhodia Chimie Sa Nouveaux complexes amphiphiles cationiques et leur application en milieux aqueux
WO2000073216A1 (fr) * 1999-05-28 2000-12-07 Rhodia Chimie Compositions d'un tensio-actif anionique et d'un cation mineral appliquees en milieux aqueux
WO2000073219A1 (fr) * 1999-05-28 2000-12-07 Rhodia Chimie Conditionnement de boues avec des compositions comprenant un tensio-actif anionique et un cation mineral

Also Published As

Publication number Publication date
DK136388D0 (da) 1988-03-11
FI881183A0 (fi) 1988-03-14
DK136388A (da) 1989-01-17
AU601823B2 (en) 1990-09-20
NO880697L (no) 1989-01-17
FI881183A (fi) 1989-01-17
CS166288A2 (en) 1990-06-13
AU1306988A (en) 1989-01-19
NO880697D0 (no) 1988-02-17
YU47188A (en) 1989-10-31
PL271189A1 (en) 1989-03-06
DE3723500A1 (de) 1989-01-26
YU45490B (en) 1992-05-28
HUT53031A (en) 1990-09-28
JPS6433292A (en) 1989-02-03
CS272785B2 (en) 1991-02-12

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