DE2928832C2 - Verfahren zum Reinigen von Wärmeaustauschern - Google Patents

Verfahren zum Reinigen von Wärmeaustauschern

Info

Publication number
DE2928832C2
DE2928832C2 DE2928832A DE2928832A DE2928832C2 DE 2928832 C2 DE2928832 C2 DE 2928832C2 DE 2928832 A DE2928832 A DE 2928832A DE 2928832 A DE2928832 A DE 2928832A DE 2928832 C2 DE2928832 C2 DE 2928832C2
Authority
DE
Germany
Prior art keywords
hydrofluoric acid
weight
crusts
cleaning
treatment solution
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
DE2928832A
Other languages
German (de)
English (en)
Other versions
DE2928832A1 (de
Inventor
Alain Aix-en-Provence Lectard
Robert Gardanne Magrone
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.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
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
Priority claimed from FR7822523A external-priority patent/FR2431671A1/fr
Priority claimed from FR7913925A external-priority patent/FR2457471A2/fr
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Publication of DE2928832A1 publication Critical patent/DE2928832A1/de
Application granted granted Critical
Publication of DE2928832C2 publication Critical patent/DE2928832C2/de
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
    • C23G1/086—Iron or steel solutions containing HF
    • 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

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)
  • Detergent Compositions (AREA)
  • Catalysts (AREA)
  • ing And Chemical Polishing (AREA)
DE2928832A 1978-07-19 1979-07-17 Verfahren zum Reinigen von Wärmeaustauschern Expired DE2928832C2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7822523A FR2431671A1 (fr) 1978-07-19 1978-07-19 Procede d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques
FR7913925A FR2457471A2 (fr) 1979-05-23 1979-05-23 Procede continu d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques

Publications (2)

Publication Number Publication Date
DE2928832A1 DE2928832A1 (de) 1980-01-31
DE2928832C2 true DE2928832C2 (de) 1982-02-18

Family

ID=26220703

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2928832A Expired DE2928832C2 (de) 1978-07-19 1979-07-17 Verfahren zum Reinigen von Wärmeaustauschern

Country Status (19)

Country Link
US (1) US4277289A (Direct)
AR (1) AR218551A1 (Direct)
AU (1) AU532323B2 (Direct)
BR (1) BR7904593A (Direct)
CA (1) CA1126137A (Direct)
DD (1) DD144955A5 (Direct)
DE (1) DE2928832C2 (Direct)
ES (1) ES482514A1 (Direct)
GB (1) GB2026038B (Direct)
HU (1) HU179742B (Direct)
IE (1) IE48657B1 (Direct)
IL (1) IL57818A0 (Direct)
IT (1) IT1122196B (Direct)
MA (1) MA18532A1 (Direct)
OA (1) OA06299A (Direct)
PH (1) PH14403A (Direct)
PL (1) PL217174A1 (Direct)
TR (1) TR20191A (Direct)
YU (1) YU41654B (Direct)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2101650C1 (ru) * 1996-03-18 1998-01-10 Государственный научный центр РФ "Физико-энергетический институт" Способ очистки внутренней поверхности стального циркуляционного контура с жидкометаллическим теплоносителем на основе свинца
US6599416B2 (en) 2001-09-28 2003-07-29 General Electric Company Method and apparatus for selectively removing coatings from substrates
US6916429B2 (en) * 2002-10-21 2005-07-12 General Electric Company Process for removing aluminosilicate material from a substrate, and related compositions
US6953533B2 (en) 2003-06-16 2005-10-11 General Electric Company Process for removing chromide coatings from metal substrates, and related compositions
DE102008005199B4 (de) * 2008-01-18 2014-01-23 Areva Gmbh Verfahren zur Reinigung eines Wärmetauschers
US20110088720A1 (en) * 2009-10-20 2011-04-21 General Electric Company Methods for cleaning substrates
FR3005318B1 (fr) * 2013-05-03 2015-05-29 Technett Solution de decapage chimique exempte d'acide fluorhydrique applicable sur le titane et ses alliages
AU2023446724B2 (en) * 2023-07-31 2025-07-03 Gem Co., Ltd. Automatic descaling system for high-pressure reactor of laterite nickel ore

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711364A (en) * 1953-12-31 1955-06-21 John G Beach Polishing metals and composition therefor
US3010854A (en) * 1954-12-31 1961-11-28 Armco Steel Corp Pickling solution and method
US3514407A (en) * 1966-09-28 1970-05-26 Lockheed Aircraft Corp Chemical polishing of titanium and titanium alloys
US3562013A (en) * 1967-10-23 1971-02-09 Diversey Corp Process of deoxidizing titanium and its alloys
DE1949287C3 (de) * 1969-09-30 1981-07-23 Vereinigte Aluminium-Werke Ag, 5300 Bonn Verfahren zum Reinigen der Rohre von beim Rohraufschluß von Bauxit mit Natriumaluminatlauge entstandenen Krusten
DE1949778A1 (de) * 1969-10-02 1971-04-22 Vaw Ver Aluminium Werke Ag Verfahren zur Entfernung von schwerloeslichen Krusten aus Bauxit-Aufschlussanlagen,mit Ausnahme von Rohraufschlussanlagen
US3725224A (en) * 1971-06-30 1973-04-03 Rohr Industries Inc Composition for electrolytic descaling of titanium and its alloys
US3891456A (en) * 1973-10-17 1975-06-24 Us Air Force Surface treatment of titanium and titanium alloys

Also Published As

Publication number Publication date
TR20191A (tr) 1980-11-01
DE2928832A1 (de) 1980-01-31
GB2026038A (en) 1980-01-30
AU4897979A (en) 1980-01-24
YU174479A (en) 1982-08-31
IT1122196B (it) 1986-04-23
PL217174A1 (Direct) 1980-06-02
AU532323B2 (en) 1983-09-29
PH14403A (en) 1981-06-25
ES482514A1 (es) 1980-04-01
IL57818A0 (en) 1979-11-30
DD144955A5 (de) 1980-11-12
OA06299A (fr) 1981-06-30
HU179742B (en) 1982-12-28
MA18532A1 (fr) 1980-04-01
IE791352L (en) 1980-01-19
IT7924394A0 (it) 1979-07-17
CA1126137A (fr) 1982-06-22
AR218551A1 (es) 1980-06-13
US4277289A (en) 1981-07-07
BR7904593A (pt) 1980-03-25
IE48657B1 (en) 1985-04-03
GB2026038B (en) 1982-09-02
YU41654B (en) 1987-12-31

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
D2 Grant after examination
8339 Ceased/non-payment of the annual fee