FR2457471A2 - Procede continu d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques - Google Patents

Procede continu d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques

Info

Publication number
FR2457471A2
FR2457471A2 FR7913925A FR7913925A FR2457471A2 FR 2457471 A2 FR2457471 A2 FR 2457471A2 FR 7913925 A FR7913925 A FR 7913925A FR 7913925 A FR7913925 A FR 7913925A FR 2457471 A2 FR2457471 A2 FR 2457471A2
Authority
FR
France
Prior art keywords
liquor
treatment
heat exchangers
acid
incrustations
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.)
Granted
Application number
FR7913925A
Other languages
English (en)
Other versions
FR2457471B2 (fr
Inventor
Alain Lectard
Robert 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
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to FR7913925A priority Critical patent/FR2457471A2/fr
Priority to US06/055,685 priority patent/US4277289A/en
Priority to ES482514A priority patent/ES482514A1/es
Priority to AR277319A priority patent/AR218551A1/es
Priority to CA331,917A priority patent/CA1126137A/fr
Priority to IT24394/79A priority patent/IT1122196B/it
Priority to OA56853A priority patent/OA06299A/fr
Priority to YU1744/79A priority patent/YU41654B/xx
Priority to DE2928832A priority patent/DE2928832C2/de
Priority to IL57818A priority patent/IL57818A0/xx
Priority to DD79214407A priority patent/DD144955A5/de
Priority to HU79PE1088A priority patent/HU179742B/hu
Priority to PL21717479A priority patent/PL217174A1/xx
Priority to MA18729A priority patent/MA18532A1/fr
Priority to AU48979/79A priority patent/AU532323B2/en
Priority to GB7925008A priority patent/GB2026038B/en
Priority to BR7904593A priority patent/BR7904593A/pt
Priority to TR20191A priority patent/TR20191A/xx
Priority to PH22795A priority patent/PH14403A/en
Priority to IE1352/79A priority patent/IE48657B1/en
Publication of FR2457471A2 publication Critical patent/FR2457471A2/fr
Application granted granted Critical
Publication of FR2457471B2 publication Critical patent/FR2457471B2/fr
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
    • C23G1/086—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)
  • Manufacture And Refinement Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

NOUVEAU PROCEDE DE NETTOYAGE DES PAROIS D'ECHANGEURS THERMIQUES OU DE REACTEURS, RECOUVERTES D'INCRUSTATIONS ESSENTIELLEMENT TITANIFERES, MAIS POUVANT EGALEMENT CONTENIR DES INCRUSTATIONS SILICOALUMINEUSES, PROVOQUANT UNE IMPORTANTE DIMINUTION DU POTENTIEL D'ECHANGE THERMIQUE, LEDIT PROCEDE ETANT DESTINE A RESTAURER EN CONTINU LES CARACTERISTIQUES FONDAMENTALES DESDITES PAROIS, AU MOYEN D'UNE LIQUEUR AQUEUSE DE TRAITEMENT CONTENANT EN POIDS 3 A 30 D'ACIDE HEXAFLUOSILICIQUE ET AU PLUS 10 D'ACIDE FLUORHYDRIQUE QUI CONSISTE A INTRODUIRE INITIALEMENT UNE LIQUEUR AQUEUSE DE DISSOLUTION CONTENANT SEULEMENT L'ACIDE HEXAFLUOSILICIQUE, PUIS A AJOUTER EN CONTINU AU FUR ET A MESURE DE LA DISSOLUTION DES TARTRES TITANIFERES UNE LIQUEUR AQUEUSE D'ACIDE FLUORHYDRIQUE.
FR7913925A 1978-07-19 1979-05-23 Procede continu d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques Granted FR2457471A2 (fr)

Priority Applications (20)

Application Number Priority Date Filing Date Title
FR7913925A FR2457471A2 (fr) 1979-05-23 1979-05-23 Procede continu d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques
US06/055,685 US4277289A (en) 1978-07-19 1979-07-06 Process for removing titaniferous and silico-aluminous incrustations from surfaces
AR277319A AR218551A1 (es) 1978-07-19 1979-07-16 Procedimiento para la limpieza de las paredes de intercambiadores termicos o de reactores recubiertos por incrustaciones esencialmente titaniferas
CA331,917A CA1126137A (fr) 1978-07-19 1979-07-16 Procede d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques
ES482514A ES482514A1 (es) 1978-07-19 1979-07-16 Procedimiento de limpieza de las paredes de intercambiadorestermicos o de reactores.
AU48979/79A AU532323B2 (en) 1978-07-19 1979-07-17 Removing titaniferous incrustations from heat exchangers
YU1744/79A YU41654B (en) 1978-07-19 1979-07-17 Method of cleaning walls of a heat exchanger or a reactor, coverd with incrustations, particularly such of a titaniumferrite - type
DE2928832A DE2928832C2 (de) 1978-07-19 1979-07-17 Verfahren zum Reinigen von Wärmeaustauschern
IL57818A IL57818A0 (en) 1978-07-19 1979-07-17 A process for removing the esentially titaniferous incrustations on the walls of heat exchangers
DD79214407A DD144955A5 (de) 1978-07-19 1979-07-17 Verfahren zum reinigen der waende von waermeaustauschern
IT24394/79A IT1122196B (it) 1978-07-19 1979-07-17 Procedimento di eliminazione delle incrostazioni essenzialmente titanifere dalle pareti di scambiatori termici
PL21717479A PL217174A1 (fr) 1978-07-19 1979-07-17
MA18729A MA18532A1 (fr) 1978-07-19 1979-07-17 Procede d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques
OA56853A OA06299A (fr) 1978-07-19 1979-07-17 Procédé d'élimination des incrustations essentiellement titanifères des parois d'échangeurs thermiques.
HU79PE1088A HU179742B (en) 1978-07-19 1979-07-17 Process for the elimination of sediments from the walls of heat exhangers
GB7925008A GB2026038B (en) 1978-07-19 1979-07-18 Process for removing incrustations comprising titaniferous material from the wall of heat exchangers or reactors
BR7904593A BR7904593A (pt) 1978-07-19 1979-07-18 Processo para limpeza das paredes de trocadores termicos ou de reatores
TR20191A TR20191A (tr) 1978-07-19 1979-07-18 Termik esanjoerlerin cidarlarindan esasen titan muhtevali olan tas sarmalarinin izalesi icin usul
PH22795A PH14403A (en) 1978-07-19 1979-07-19 A process for removing the essentially titaniferrous incrustation on the of heat exchangers
IE1352/79A IE48657B1 (en) 1978-07-19 1979-08-08 A process for removing incrustations comprising titaniferous material from the wall of heat exchangers or reactors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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
FR2457471A2 true FR2457471A2 (fr) 1980-12-19
FR2457471B2 FR2457471B2 (fr) 1982-05-14

Family

ID=9226067

Family Applications (1)

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

Country Status (1)

Country Link
FR (1) FR2457471A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2216701C1 (ru) * 2002-03-18 2003-11-20 Государственное предприятие Научно-исследовательский технологический институт им. А.П.Александрова Способ отмывки парогенератора

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2142079A1 (fr) * 1971-06-17 1973-01-26 Rolls Royce

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2142079A1 (fr) * 1971-06-17 1973-01-26 Rolls Royce

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2216701C1 (ru) * 2002-03-18 2003-11-20 Государственное предприятие Научно-исследовательский технологический институт им. А.П.Александрова Способ отмывки парогенератора

Also Published As

Publication number Publication date
FR2457471B2 (fr) 1982-05-14

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