FI956346A0 - Process for reducing the concentration of finely dispersed solids in process solutions in papermaking - Google Patents

Process for reducing the concentration of finely dispersed solids in process solutions in papermaking

Info

Publication number
FI956346A0
FI956346A0 FI956346A FI956346A FI956346A0 FI 956346 A0 FI956346 A0 FI 956346A0 FI 956346 A FI956346 A FI 956346A FI 956346 A FI956346 A FI 956346A FI 956346 A0 FI956346 A0 FI 956346A0
Authority
FI
Finland
Prior art keywords
papermaking
concentration
reducing
finely dispersed
dispersed solids
Prior art date
Application number
FI956346A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI956346A (en
Inventor
Maria Liphard
Klaus Hornfeck
Ludwig Schieferstein
Rita Koester
Bernhard Nellessen
Wolfgang Matzke
Original Assignee
Henkel 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 Kgaa filed Critical Henkel Kgaa
Publication of FI956346A0 publication Critical patent/FI956346A0/en
Publication of FI956346A publication Critical patent/FI956346A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
    • C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised

Abstract

In the method proposed, the solids content in the process solutions is reduced by adding measured quantities of special cationic polymers to the process solution and subsequently removing the precipitated solids by flotation and/or filtration.
FI956346A 1993-07-01 1995-12-29 Method for reducing the concentration of finely dispersed solids in papermaking process solutions FI956346A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4321819A DE4321819A1 (en) 1993-07-01 1993-07-01 Process for reducing the content of finely dispersed solids in process water from papermaking
PCT/EP1994/002038 WO1995001309A1 (en) 1993-07-01 1994-06-22 Method of reducing the concentration of finely dispersed solids in process solutions in paper manufacturing

Publications (2)

Publication Number Publication Date
FI956346A0 true FI956346A0 (en) 1995-12-29
FI956346A FI956346A (en) 1996-02-19

Family

ID=6491636

Family Applications (1)

Application Number Title Priority Date Filing Date
FI956346A FI956346A (en) 1993-07-01 1995-12-29 Method for reducing the concentration of finely dispersed solids in papermaking process solutions

Country Status (9)

Country Link
EP (1) EP0706499B1 (en)
JP (1) JPH08511985A (en)
KR (1) KR960703389A (en)
AT (1) ATE152083T1 (en)
CA (1) CA2166458A1 (en)
DE (2) DE4321819A1 (en)
ES (1) ES2101551T3 (en)
FI (1) FI956346A (en)
WO (1) WO1995001309A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9507895D0 (en) * 1995-04-18 1995-05-31 Allied Colloids Ltd Aqueous purification processes
DE19532301A1 (en) * 1995-09-01 1997-03-06 Voith Sulzer Stoffaufbereitung Process for the preparation of dry waste from a paper, cardboard or coating machine
US5750034A (en) * 1996-11-01 1998-05-12 Nalco Chemical Company Hydrophilic dispersion polymers for the clarification of deinking process waters
US6153049A (en) * 1998-03-25 2000-11-28 The Dow Chemical Company Method for inhibiting the deposition of white pitch in paper production using ethylene amine compound
DE102005009809B4 (en) * 2005-03-03 2007-02-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for separating suspended solids
CN107442288B (en) * 2017-08-14 2019-08-06 江西理工大学 A kind of morpholine quaternary ammonium salt Gemini surface active for mineral floating

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA640426A (en) * 1956-04-10 1962-04-24 B. Fordyce David Dewatering aqueous suspensions of predominantly organic matter by means of cationic amino-alkyl ester polymers
DE1179098B (en) * 1961-05-03 1964-10-01 Basf Ag Flotation agent for clarifying waste water containing paper fibers

Also Published As

Publication number Publication date
DE4321819A1 (en) 1995-01-12
WO1995001309A1 (en) 1995-01-12
KR960703389A (en) 1996-08-17
ES2101551T3 (en) 1997-07-01
EP0706499B1 (en) 1997-04-23
FI956346A (en) 1996-02-19
ATE152083T1 (en) 1997-05-15
DE59402545D1 (en) 1997-05-28
JPH08511985A (en) 1996-12-17
EP0706499A1 (en) 1996-04-17
CA2166458A1 (en) 1995-01-12

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Legal Events

Date Code Title Description
FD Application lapsed