FR2428207A1 - Procede et installation pour le traitement de bains fluonitriques uses - Google Patents

Procede et installation pour le traitement de bains fluonitriques uses

Info

Publication number
FR2428207A1
FR2428207A1 FR7817008A FR7817008A FR2428207A1 FR 2428207 A1 FR2428207 A1 FR 2428207A1 FR 7817008 A FR7817008 A FR 7817008A FR 7817008 A FR7817008 A FR 7817008A FR 2428207 A1 FR2428207 A1 FR 2428207A1
Authority
FR
France
Prior art keywords
hydrofluoric acid
give
metal oxide
innocuous
gas
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
FR7817008A
Other languages
English (en)
Other versions
FR2428207B1 (fr
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.)
GUEUGNON FORGES
Original Assignee
GUEUGNON FORGES
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 GUEUGNON FORGES filed Critical GUEUGNON FORGES
Priority to FR7817008A priority Critical patent/FR2428207A1/fr
Publication of FR2428207A1 publication Critical patent/FR2428207A1/fr
Application granted granted Critical
Publication of FR2428207B1 publication Critical patent/FR2428207B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • 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
    • C23G1/36—Regeneration of waste pickling liquors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/12—Halogens or halogen-containing compounds
    • C02F2101/14—Fluorine or fluorine-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/163—Nitrates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/203—Iron or iron compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Selon ce procédé on brûle le bain fluonitrique usé dans un four de façon à obtenir des produits de combustion ou fumées contenant CO2 , N2 , H2 O, HF et des oxydes métalliques, on sépare les oxydes métalliques contenus dans ces produits de combustion, on met en solution le fluorure d'hydrogène HF contenu dans les fumées de façon à récupérer une solution d'acide fluorhydrique, et l'on rejette à l'atmosphère un mélange de gaz carbonique, d'azote et d'eau. On évite ainsi tout encrassage, dû à l'utilisation de la chaux dans le procédé antérieur, et l'on récupère en il des oxydes métalliques pratiquement purs ainsi que de l'acide fluorhydriques à environ 2 % en 13, qui peuvent être aisément réutilisés.
FR7817008A 1978-06-07 1978-06-07 Procede et installation pour le traitement de bains fluonitriques uses Granted FR2428207A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817008A FR2428207A1 (fr) 1978-06-07 1978-06-07 Procede et installation pour le traitement de bains fluonitriques uses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817008A FR2428207A1 (fr) 1978-06-07 1978-06-07 Procede et installation pour le traitement de bains fluonitriques uses

Publications (2)

Publication Number Publication Date
FR2428207A1 true FR2428207A1 (fr) 1980-01-04
FR2428207B1 FR2428207B1 (fr) 1980-10-24

Family

ID=9209187

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817008A Granted FR2428207A1 (fr) 1978-06-07 1978-06-07 Procede et installation pour le traitement de bains fluonitriques uses

Country Status (1)

Country Link
FR (1) FR2428207A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0775760A1 (fr) * 1995-11-27 1997-05-28 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procédé et appareil de production et/ou recupération d'acides à partir de solutions métallifères de ces acides
EP0843025A1 (fr) * 1996-11-15 1998-05-20 Keramchemie GmbH Procédé de régénération de solutions de décapage usées

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1515350A (fr) * 1966-03-28 1968-03-01 Prenco Mfg Company Procédé de traitement d'une liqueur de décapage résiduelle
GB1156063A (en) * 1965-04-17 1969-06-25 Metallgesellschaft Ag A Method of Recovering Hydrochloric Acid from Pickling Liquors Containing Hydrochloric Acid.
FR2219910A1 (fr) * 1973-03-02 1974-09-27 Speichim Equip Ind Chimiq
BE840982A (fr) * 1976-04-22 1976-08-16 Procede de recuperation partielle et de recyclage d'acide nitrique et d'acide fluorhydrique a partir de solutions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1156063A (en) * 1965-04-17 1969-06-25 Metallgesellschaft Ag A Method of Recovering Hydrochloric Acid from Pickling Liquors Containing Hydrochloric Acid.
FR1515350A (fr) * 1966-03-28 1968-03-01 Prenco Mfg Company Procédé de traitement d'une liqueur de décapage résiduelle
FR2219910A1 (fr) * 1973-03-02 1974-09-27 Speichim Equip Ind Chimiq
BE840982A (fr) * 1976-04-22 1976-08-16 Procede de recuperation partielle et de recyclage d'acide nitrique et d'acide fluorhydrique a partir de solutions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV1252/63 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0775760A1 (fr) * 1995-11-27 1997-05-28 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procédé et appareil de production et/ou recupération d'acides à partir de solutions métallifères de ces acides
EP0843025A1 (fr) * 1996-11-15 1998-05-20 Keramchemie GmbH Procédé de régénération de solutions de décapage usées

Also Published As

Publication number Publication date
FR2428207B1 (fr) 1980-10-24

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