DK0628518T3 - Fremgangsmåde til at hindre dannelse af oxalatkedelsten - Google Patents

Fremgangsmåde til at hindre dannelse af oxalatkedelsten

Info

Publication number
DK0628518T3
DK0628518T3 DK94870087T DK94870087T DK0628518T3 DK 0628518 T3 DK0628518 T3 DK 0628518T3 DK 94870087 T DK94870087 T DK 94870087T DK 94870087 T DK94870087 T DK 94870087T DK 0628518 T3 DK0628518 T3 DK 0628518T3
Authority
DK
Denmark
Prior art keywords
preventing formation
oxalate
ppm
scales
inhibitors
Prior art date
Application number
DK94870087T
Other languages
Danish (da)
English (en)
Inventor
Krzysztof Kuczynski
Original Assignee
Solutia Europ Nv Sa
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
Priority claimed from EP93870111A external-priority patent/EP0629585A1/fr
Application filed by Solutia Europ Nv Sa filed Critical Solutia Europ Nv Sa
Application granted granted Critical
Publication of DK0628518T3 publication Critical patent/DK0628518T3/da

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids RP(=O)(OH)2; Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se)
    • C07F9/3804—Phosphonic acids RP(=O)(OH)2; Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se) not used, see subgroups
    • C07F9/3808—Acyclic saturated acids which can have further substituents on alkyl
    • C07F9/3817—Acids containing the structure (RX)2P(=X)-alk-N...P (X = O, S, Se)
DK94870087T 1993-06-14 1994-05-24 Fremgangsmåde til at hindre dannelse af oxalatkedelsten DK0628518T3 (da)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP93870111A EP0629585A1 (fr) 1993-06-14 1993-06-14 Procédé empêchant la formation des dépôts d'oxalata
EP94870087A EP0628518B1 (fr) 1993-06-14 1994-05-24 Procédé empêchant la formation des dépôts d'oxalate
US08/257,855 US5490942A (en) 1993-06-14 1994-06-10 Process of inhibiting oxalate scale formation

Publications (1)

Publication Number Publication Date
DK0628518T3 true DK0628518T3 (da) 2001-12-17

Family

ID=27235604

Family Applications (1)

Application Number Title Priority Date Filing Date
DK94870087T DK0628518T3 (da) 1993-06-14 1994-05-24 Fremgangsmåde til at hindre dannelse af oxalatkedelsten

Country Status (6)

Country Link
US (1) US5490942A (fr)
EP (1) EP0628518B1 (fr)
AT (1) ATE205460T1 (fr)
DE (1) DE69428230T2 (fr)
DK (1) DK0628518T3 (fr)
ES (1) ES2163427T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9603029D0 (sv) * 1996-08-20 1996-08-20 Svenska Traeforskningsinst Method for lowering the level of oxalic acid
MY138251A (en) * 2001-06-06 2009-05-29 Thermphos Trading Gmbh Method for inhibiting calcium salt scale
MY129053A (en) * 2001-06-06 2007-03-30 Thermphos Trading Gmbh Composition for inhibiting calcium salt scale
ATE492682T1 (de) * 2001-06-06 2011-01-15 Dequest Ag Verfahren und wässerige zusammensetzung zur herstellung von verbessertem zellstoff
ITMI20021706A1 (it) * 2002-07-31 2004-02-01 Bozzetto Giovanni Spa Poliamminomeilenfosfono derivati.
US7807021B2 (en) * 2006-06-21 2010-10-05 Blackstone Michael M Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process
US20100197545A1 (en) * 2009-01-30 2010-08-05 Ecolab USA High alkaline detergent composition with enhanced scale control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434969A (en) * 1967-08-11 1969-03-25 Calgon Corp Scale inhibiting
US3619427A (en) * 1970-06-22 1971-11-09 Textilana Corp Methods of scale inhibition using polyalkylene polyamino polykis methylene phosphonic acids and their salts
US4872995A (en) * 1983-10-26 1989-10-10 Betz Laboratories, Inc. Method for calcium oxalate scale control
US4575425A (en) * 1984-12-24 1986-03-11 Calgon Corporation Process for controlling calcium oxalate scale over a wide pH range
DE3526640A1 (de) * 1985-07-25 1987-01-29 Benckiser Knapsack Gmbh Korrosions- und steinschutzmittel fuer brauchwassersysteme
US4804476A (en) * 1987-10-23 1989-02-14 Calgon Corporation Process for controlling calcium oxalate scale over a wide pH range
DE69114436T2 (de) * 1990-10-04 1996-06-20 Britoil Plc Verfahren zur Bekämpfung der Kesselsteinbildung.
GB2248830A (en) * 1990-10-04 1992-04-22 Britoil Plc Method for inhibiting scale formation
US5338477A (en) * 1991-05-31 1994-08-16 Calgon Corporation Polyether polyamino methylene phosphonates for high pH scale control
AU2701392A (en) * 1991-10-15 1993-04-22 Calgon Corporation Method for controlling calcium sulfate scaling in metal mining circuits

Also Published As

Publication number Publication date
EP0628518A1 (fr) 1994-12-14
ES2163427T3 (es) 2002-02-01
EP0628518B1 (fr) 2001-09-12
US5490942A (en) 1996-02-13
DE69428230D1 (de) 2001-10-18
ATE205460T1 (de) 2001-09-15
DE69428230T2 (de) 2002-06-27

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