GB1039187A - A method for removing scale from metallic surfaces - Google Patents

A method for removing scale from metallic surfaces

Info

Publication number
GB1039187A
GB1039187A GB2487864A GB2487864A GB1039187A GB 1039187 A GB1039187 A GB 1039187A GB 2487864 A GB2487864 A GB 2487864A GB 2487864 A GB2487864 A GB 2487864A GB 1039187 A GB1039187 A GB 1039187A
Authority
GB
United Kingdom
Prior art keywords
weight
scale
metallic surfaces
thiourea
surfactant
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
GB2487864A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1039187A publication Critical patent/GB1039187A/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
    • 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
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Scale containing Cu is removed from metallic surfaces by applying an acidic solvent containing an inhibitor, an alkenylthiorurea, which prevents deposition of metallic Cu on the surfaces, the alkenyl group containg 2 - 6 carbon atoms, and a surfactant. Solvents described may contain 2-70% by weight of H2SO4, 0.1-1% by weight of an amine inhibitor in a mixture of water and water miscible alcohol containing a surfactant and 2-40 parts by weight for each part by weight of the Cu in the scale, of 1-butenyl-2 thiourea, 1-allyl-2-thiourea or a mixture thereof. Co-Mo stell was treated for 6 hours at 150 DEG F.
GB2487864A 1963-06-26 1964-06-16 A method for removing scale from metallic surfaces Expired GB1039187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29064463A 1963-06-26 1963-06-26

Publications (1)

Publication Number Publication Date
GB1039187A true GB1039187A (en) 1966-08-17

Family

ID=23116941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2487864A Expired GB1039187A (en) 1963-06-26 1964-06-16 A method for removing scale from metallic surfaces

Country Status (3)

Country Link
DE (1) DE1546109A1 (en)
GB (1) GB1039187A (en)
NL (1) NL6407240A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087099A2 (en) * 2006-01-17 2007-08-02 Johnsondiversey, Inc. Method of removing scale and acidic composition used thereof
CN106478876A (en) * 2015-08-31 2017-03-08 中国石油化工股份有限公司 A kind of copolymer and preparation method and application

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087099A2 (en) * 2006-01-17 2007-08-02 Johnsondiversey, Inc. Method of removing scale and acidic composition used thereof
WO2007087099A3 (en) * 2006-01-17 2008-02-21 Johnson Diversey Inc Method of removing scale and acidic composition used thereof
CN106478876A (en) * 2015-08-31 2017-03-08 中国石油化工股份有限公司 A kind of copolymer and preparation method and application

Also Published As

Publication number Publication date
NL6407240A (en) 1964-12-28
DE1546109A1 (en) 1970-03-26

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