GB914701A - Improvements in or relating to the protection of water circuits against corrosion - Google Patents

Improvements in or relating to the protection of water circuits against corrosion

Info

Publication number
GB914701A
GB914701A GB859459A GB859459A GB914701A GB 914701 A GB914701 A GB 914701A GB 859459 A GB859459 A GB 859459A GB 859459 A GB859459 A GB 859459A GB 914701 A GB914701 A GB 914701A
Authority
GB
United Kingdom
Prior art keywords
water
phosphate
corrosion
circuit
parts
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.)
Expired
Application number
GB859459A
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.)
Progil SARL
Original Assignee
Progil SARL
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 Progil SARL filed Critical Progil SARL
Publication of GB914701A publication Critical patent/GB914701A/en
Expired 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
    • C02F5/086—Condensed phosphates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/184—Phosphorous, arsenic, antimony or bismuth containing compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

914,701. Preventing corrosion and scaling. PROGIL. March 12, 1959 [March 12, 1958], No. 8594/59. Class 123 (1). A process for protecting the metal surfaces in an open water circuit, that is, a circuit in which there is no recycling of water already treated, against corrosion or against both corrosion and scaling comprises intermittently injecting into the water circuit up to and including a total at each injection of fifty parts by weight of a water-soluble orthophosphate and/or a water-soluble polyphosphate per million parts of water, the frequency of the injections being such that the average amount of phosphate injected does not exceed five parts per million. The preferred phosphate is sodium hexametaphosphate used alone or admixed with sodium orthophosphate. A quantity regulating pump controlled by a time switch may be used to inject the phosphate.
GB859459A 1958-03-12 1959-03-12 Improvements in or relating to the protection of water circuits against corrosion Expired GB914701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR75038206A FR1193168A (en) 1958-03-12 1958-03-12 Process for protecting water circuits against corrosion

Publications (1)

Publication Number Publication Date
GB914701A true GB914701A (en) 1963-01-02

Family

ID=8592382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB859459A Expired GB914701A (en) 1958-03-12 1959-03-12 Improvements in or relating to the protection of water circuits against corrosion

Country Status (2)

Country Link
FR (1) FR1193168A (en)
GB (1) GB914701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337165A (en) 1979-12-18 1982-06-29 Lion Corporation Amine oxide-and alkali metal chloride-containing non-corrosive liquid detergent composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337165A (en) 1979-12-18 1982-06-29 Lion Corporation Amine oxide-and alkali metal chloride-containing non-corrosive liquid detergent composition

Also Published As

Publication number Publication date
FR1193168A (en) 1959-10-30

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