ES482514A1 - Procedimiento de limpieza de las paredes de intercambiadorestermicos o de reactores. - Google Patents

Procedimiento de limpieza de las paredes de intercambiadorestermicos o de reactores.

Info

Publication number
ES482514A1
ES482514A1 ES482514A ES482514A ES482514A1 ES 482514 A1 ES482514 A1 ES 482514A1 ES 482514 A ES482514 A ES 482514A ES 482514 A ES482514 A ES 482514A ES 482514 A1 ES482514 A1 ES 482514A1
Authority
ES
Spain
Prior art keywords
incrustations
aluminous
silico
titaniferous
walls
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
ES482514A
Other languages
English (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.)
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 ES482514A1 publication Critical patent/ES482514A1/es
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)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • ing And Chemical Polishing (AREA)
  • Catalysts (AREA)

Abstract

Procedimiento de limpieza de las paredes de intercambiadores térmicos ó de reactores, recubiertas de incrustaciones esencialmente titaníferas, pero que pueden contener igualmente incrustaciones silico-aluminosas formadas durante el ataque de minerales, provocando así una importante disminución del potencial de intercambio térmico, estando destinado el procedimiento a restaurar las características fundamentales de las paredes, caracterizado porque se eliminan las incrustaciones por medio de un licor acuoso de tratamiento que contiene de 3 a 30% en peso de ácido hexafluosilícico y a lo sumo el 10% en peso de ácido fluorhídrico.
ES482514A 1978-07-19 1979-07-16 Procedimiento de limpieza de las paredes de intercambiadorestermicos o de reactores. Expired ES482514A1 (es)

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 (1)

Publication Number Publication Date
ES482514A1 true ES482514A1 (es) 1980-04-01

Family

ID=26220703

Family Applications (1)

Application Number Title Priority Date Filing Date
ES482514A Expired ES482514A1 (es) 1978-07-19 1979-07-16 Procedimiento de limpieza de las paredes de intercambiadorestermicos o de reactores.

Country Status (19)

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

Families Citing this family (7)

* 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

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
IE791352L (en) 1980-01-19
PH14403A (en) 1981-06-25
IT1122196B (it) 1986-04-23
YU174479A (en) 1982-08-31
DE2928832A1 (de) 1980-01-31
HU179742B (en) 1982-12-28
GB2026038A (en) 1980-01-30
CA1126137A (fr) 1982-06-22
OA06299A (fr) 1981-06-30
BR7904593A (pt) 1980-03-25
GB2026038B (en) 1982-09-02
IL57818A0 (en) 1979-11-30
MA18532A1 (fr) 1980-04-01
TR20191A (tr) 1980-11-01
IT7924394A0 (it) 1979-07-17
IE48657B1 (en) 1985-04-03
DD144955A5 (de) 1980-11-12
PL217174A1 (es) 1980-06-02
AR218551A1 (es) 1980-06-13
YU41654B (en) 1987-12-31
DE2928832C2 (de) 1982-02-18
AU4897979A (en) 1980-01-24
AU532323B2 (en) 1983-09-29
US4277289A (en) 1981-07-07

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970612