ES8503728A1 - Composition and method for simultaneously removing iron and copper scales from ferrous metal surfaces. - Google Patents

Composition and method for simultaneously removing iron and copper scales from ferrous metal surfaces.

Info

Publication number
ES8503728A1
ES8503728A1 ES525797A ES525797A ES8503728A1 ES 8503728 A1 ES8503728 A1 ES 8503728A1 ES 525797 A ES525797 A ES 525797A ES 525797 A ES525797 A ES 525797A ES 8503728 A1 ES8503728 A1 ES 8503728A1
Authority
ES
Spain
Prior art keywords
ferrous metal
metal surfaces
removing iron
composition
erythorbic acid
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
ES525797A
Other languages
Spanish (es)
Other versions
ES525797A0 (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.)
Halliburton Co
Original Assignee
Halliburton Co
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 Halliburton Co filed Critical Halliburton Co
Publication of ES8503728A1 publication Critical patent/ES8503728A1/en
Publication of ES525797A0 publication Critical patent/ES525797A0/en
Granted 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/088—Iron or steel solutions containing organic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

Compositions for simultaeously removing iron and copper scales from ferrous metal surfaces comprise water, one or more organic chelating acids which dissolve iron, one or more reducing agents selected from erythorbic acid, alkali metal salts of erythorbic acid, and ammonium salts of erythorbic acid, and, as copper complexing compound, thiourea and/or hexahydropyrimidine-2-thione. The compositions are utilized by contacting scale-containing ferrous metal surfaces therewith at temperatures of from about 75 DEG F (24 DEG C) to about 150 DEG F (66 DEG C).
ES525797A 1982-09-21 1983-09-21 PROCEDURE TO SIMULTANEOUSLY SEPARATE IRON AND COPPER SHELLS FROM A FERREA METALLIC SURFACE Granted ES525797A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42099882A 1982-09-21 1982-09-21

Publications (2)

Publication Number Publication Date
ES8503728A1 true ES8503728A1 (en) 1985-03-01
ES525797A0 ES525797A0 (en) 1985-03-01

Family

ID=23668765

Family Applications (1)

Application Number Title Priority Date Filing Date
ES525797A Granted ES525797A0 (en) 1982-09-21 1983-09-21 PROCEDURE TO SIMULTANEOUSLY SEPARATE IRON AND COPPER SHELLS FROM A FERREA METALLIC SURFACE

Country Status (3)

Country Link
EP (1) EP0104012A3 (en)
CA (1) CA1204372A (en)
ES (1) ES525797A0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157322B (en) * 1984-03-29 1987-10-21 Diversey Limited Removal of iron oxide deposits
US4810405A (en) * 1987-10-21 1989-03-07 Dearborn Chemical Company, Limited Rust removal and composition thereof
CN1047409C (en) * 1997-03-07 1999-12-15 沈阳市巨龙防腐技术研究所 Normal-temp copper pickling corrosion inhibitor
DE10346192B4 (en) * 2003-10-02 2009-08-06 Thyssenkrupp Presta Teccenter Ag Method for rust removal of molded parts and use of the method
DE502005002702D1 (en) * 2004-09-25 2008-03-13 Chemetall Gmbh PROCESS FOR REMOVING LASER ZUNDER
CN112516793A (en) * 2020-11-10 2021-03-19 东华理工大学 Method for reducing Fe (III) EDTA by using sodium iso-VC and method for removing NO in waste gas by using EDTA
CN113337827A (en) * 2021-06-07 2021-09-03 山东惠中新材料科技有限公司 Environment-friendly rust remover

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040546B1 (en) * 1970-08-14 1971-12-02 Hagen Feldmann Aqueous solution of an aliphatic carboxylic acid to remove ocher deposits or deposits
US3730901A (en) * 1972-04-27 1973-05-01 Halliburton Co Composition and method for removing copper containing iron oxide scales from ferrous metals
JPS53731B2 (en) * 1973-07-31 1978-01-11
DE2457235A1 (en) * 1974-12-04 1976-06-10 Peter Vodicka Protecting descaled pickled or cleaned metal articles - against attack by ferric cations by redn. using metals or water soluble cpds.

Also Published As

Publication number Publication date
EP0104012A3 (en) 1985-08-21
CA1204372A (en) 1986-05-13
EP0104012A2 (en) 1984-03-28
ES525797A0 (en) 1985-03-01

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