GB838259A - Improvements in and relating to the prevention of corrosion in cooling systems - Google Patents

Improvements in and relating to the prevention of corrosion in cooling systems

Info

Publication number
GB838259A
GB838259A GB823658A GB823658A GB838259A GB 838259 A GB838259 A GB 838259A GB 823658 A GB823658 A GB 823658A GB 823658 A GB823658 A GB 823658A GB 838259 A GB838259 A GB 838259A
Authority
GB
United Kingdom
Prior art keywords
glycerol
tungstate
molybdate
borate
nitrite
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
GB823658A
Inventor
Ivor Ashton Davies
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB823658A priority Critical patent/GB838259A/en
Publication of GB838259A publication Critical patent/GB838259A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23F11/187—Mixtures of inorganic inhibitors
    • 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
    • C23F11/187—Mixtures of inorganic inhibitors
    • C23F11/188—Mixtures of inorganic inhibitors containing phosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Aqueous cooling compositions contain one or more glycols or glycerol, an alkali metal molybdate or tungstate, an alkali metal nitrite, and an alkali metal borate or phosphate. The glycols or glycerol may be present in an amount of 20% by volume of the total volume of the composition, and the composition may contain 2.5% of the molybdate or tungstate, 0.5% of the nitrite and 0.5% of the borate or phosphate, all by weight of the glycols or glycerol. A mixture of the molybdate or tungstate, with the nitrite and borate or phosphate may be added to an aqueous solution of glycol or glycerol. In examples, compositions contain ethylene glycol, sodium molybdate, sodium tungstate, sodium nitrite and sodium borate.
GB823658A 1958-03-14 1958-03-14 Improvements in and relating to the prevention of corrosion in cooling systems Expired GB838259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB823658A GB838259A (en) 1958-03-14 1958-03-14 Improvements in and relating to the prevention of corrosion in cooling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB823658A GB838259A (en) 1958-03-14 1958-03-14 Improvements in and relating to the prevention of corrosion in cooling systems

Publications (1)

Publication Number Publication Date
GB838259A true GB838259A (en) 1960-06-22

Family

ID=9848585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB823658A Expired GB838259A (en) 1958-03-14 1958-03-14 Improvements in and relating to the prevention of corrosion in cooling systems

Country Status (1)

Country Link
GB (1) GB838259A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328872A1 (en) * 1988-02-22 1989-08-23 Pacific Gas and Electric Company Corrosion inhibition of closed cooling water auxiliary system for nuclear power plants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328872A1 (en) * 1988-02-22 1989-08-23 Pacific Gas and Electric Company Corrosion inhibition of closed cooling water auxiliary system for nuclear power plants

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