FR2258347A1 - Removing or inhibiting alluvial and other deposits - in water systems by adding polymers prepd. from water-soluble monomers - Google Patents

Removing or inhibiting alluvial and other deposits - in water systems by adding polymers prepd. from water-soluble monomers

Info

Publication number
FR2258347A1
FR2258347A1 FR7501464A FR7501464A FR2258347A1 FR 2258347 A1 FR2258347 A1 FR 2258347A1 FR 7501464 A FR7501464 A FR 7501464A FR 7501464 A FR7501464 A FR 7501464A FR 2258347 A1 FR2258347 A1 FR 2258347A1
Authority
FR
France
Prior art keywords
water
deposits
prepd
alluvial
systems
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
FR7501464A
Other languages
French (fr)
Other versions
FR2258347B1 (en
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.)
Calgon Corp
Original Assignee
Calgon Corp
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 Calgon Corp filed Critical Calgon Corp
Publication of FR2258347A1 publication Critical patent/FR2258347A1/en
Application granted granted Critical
Publication of FR2258347B1 publication Critical patent/FR2258347B1/fr
Granted legal-status Critical Current

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
    • C02F5/12—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 nitrogen
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Alluvial deposits and sinking materials in water systems may be removed and their formation prevented by adding a water-in-oil emulsion contg. opt. 1-40 (20-40) wt. % of a finely divided stable water-soluble polymer having high mol. wt., e.g. 100000-20 000 000, prepd. by emulsion polymsn. of water-soluble ethylenically unsatd. monomers. Used in cooling systems, e.g. of steel industry furnaces or cooling towers of oil refineries. Additives can have a higher active ingredient content than materials used hitherto, are easily dissolved and provide a better cost : efficiency ratio. Deposits are dispersed in water stream and agglomerated to mobile flocculates. Pref. polymers are copolymers of acrylamide with Na acrylate, (3-acrylamide-3-Me)-Bu-trimethyl ammonium chloride, 2-acrylamido-2-Me-propane sulphonic acid or dimethyl-diallyl ammonium chloride.
FR7501464A 1974-01-21 1975-01-17 Removing or inhibiting alluvial and other deposits - in water systems by adding polymers prepd. from water-soluble monomers Granted FR2258347A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43535574A 1974-01-21 1974-01-21
US51915474A 1974-10-31 1974-10-31

Publications (2)

Publication Number Publication Date
FR2258347A1 true FR2258347A1 (en) 1975-08-18
FR2258347B1 FR2258347B1 (en) 1976-12-31

Family

ID=27030530

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7501464A Granted FR2258347A1 (en) 1974-01-21 1975-01-17 Removing or inhibiting alluvial and other deposits - in water systems by adding polymers prepd. from water-soluble monomers

Country Status (3)

Country Link
DE (1) DE2502012A1 (en)
FR (1) FR2258347A1 (en)
SE (1) SE7500160L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2854484A1 (en) * 1978-12-16 1980-06-26 Bayer Ag STABLE AQUEOUS ZEOLITE SUSPENSIONS
US4595736A (en) * 1983-06-07 1986-06-17 Dresser Industries, Inc. Thermally stable drilling fluid additive comprised of a copolymer of catechol-based monomer
US4525562A (en) * 1983-06-07 1985-06-25 Dresser Industries, Inc. Thermally stable drilling fluid additive
US4521578A (en) * 1983-09-26 1985-06-04 Dresser Industries, Inc. Composition and method of preparation of novel aqueous drilling fluid additives
US4579927A (en) * 1983-09-26 1986-04-01 Dresser Industries, Inc. Copolymers of flavanoid tannins and acrylic monomers

Also Published As

Publication number Publication date
FR2258347B1 (en) 1976-12-31
DE2502012A1 (en) 1975-07-24
SE7500160L (en) 1975-07-22

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Legal Events

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ST Notification of lapse