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GB877066A - Process for the treatment of pickle bath liquor - Google Patents

Process for the treatment of pickle bath liquor

Info

Publication number
GB877066A
GB877066A GB1472459A GB1472459A GB877066A GB 877066 A GB877066 A GB 877066A GB 1472459 A GB1472459 A GB 1472459A GB 1472459 A GB1472459 A GB 1472459A GB 877066 A GB877066 A GB 877066A
Authority
GB
United Kingdom
Prior art keywords
evaporator
returned
pickle
liquid
slurry
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
GB1472459A
Inventor
George Henry Black
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.)
KESTNER EVAPORATOR AND ENGINEE
Original Assignee
KESTNER EVAPORATOR AND ENGINEE
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 KESTNER EVAPORATOR AND ENGINEE filed Critical KESTNER EVAPORATOR AND ENGINEE
Priority to GB1472459A priority Critical patent/GB877066A/en
Publication of GB877066A publication Critical patent/GB877066A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/10—Halides
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

<PICT:0877066/III/1> Pickle liquor is withdrawn continuously from the pickle bath and fed to an evaporator operating at reduced pressure in which a slurry of hydrated ferrous chloride crystals is formed. This slurry is removed, the crystals separated, and the mother liquor returned to the evaporator. The vapours from the evaporator are passed to a condenser, preferably via a separator to remove entrained liquid which is returned to the evaporator, and the condensed vapours, together with make-up hydrochloric acid, are returned to the pickle bath. The vacuum in the evaporator may be maintained by extracting the uncondensed gases from the condenser. In the drawing, an evaporator 10, consisting of a steam heated calandria, is fed with pickle liquor from tank 16. The slurry therein formed is passed to separator 11, and from thence to filter or centrifuge 29, the ferrous chloride crystals being withdrawn at 30 and the mother liquor being recycled to the evaporator via 31. The vapours pass through a vapour/liquid separator 33, from which the liquid is returned to the evaporator, and the vapour enters condenser 36, from whence the liquid is returned to pickle bath 16. A vacuum is maintained in the system by means of an air ejector 40 or other suitable device, for example a pump.
GB1472459A 1959-04-30 1959-04-30 Process for the treatment of pickle bath liquor Expired GB877066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1472459A GB877066A (en) 1959-04-30 1959-04-30 Process for the treatment of pickle bath liquor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1472459A GB877066A (en) 1959-04-30 1959-04-30 Process for the treatment of pickle bath liquor

Publications (1)

Publication Number Publication Date
GB877066A true GB877066A (en) 1961-09-13

Family

ID=10046362

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1472459A Expired GB877066A (en) 1959-04-30 1959-04-30 Process for the treatment of pickle bath liquor

Country Status (1)

Country Link
GB (1) GB877066A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399964A (en) * 1965-04-17 1968-09-03 Mettallgesellschaft Ag Process for regenerating used hydrochloric acid containing pickling liquors
US3442608A (en) * 1968-05-06 1969-05-06 Canada Steel Co Regeneration of waste pickle liquors
FR2457331A1 (en) * 1979-05-23 1980-12-19 Minemet Rech Sa Continuous pickling of metal in hydrochloric acid bath - esp. pickling steel prior to galvanising in molten zinc bath, where acid and ferrous chloride are reclaimed
BE1005210A3 (en) * 1991-09-17 1993-05-25 Kronos Int Inc Method for raising the purity of iron chloride technical.
NL9302035A (en) * 1993-11-24 1995-06-16 Piet De Vries Pickling method and a device therefor.
AT500245A1 (en) * 2004-04-19 2005-11-15 Deininger Karl Dipl Ing Process to render the liquid contents of a pickling bath suitable for disposal by distillation at predefined temperature and pressure
CN106145486A (en) * 2015-04-08 2016-11-23 天津市小猫线缆有限公司 A kind of special cable manufactures sewage disposal system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399964A (en) * 1965-04-17 1968-09-03 Mettallgesellschaft Ag Process for regenerating used hydrochloric acid containing pickling liquors
US3442608A (en) * 1968-05-06 1969-05-06 Canada Steel Co Regeneration of waste pickle liquors
FR2457331A1 (en) * 1979-05-23 1980-12-19 Minemet Rech Sa Continuous pickling of metal in hydrochloric acid bath - esp. pickling steel prior to galvanising in molten zinc bath, where acid and ferrous chloride are reclaimed
BE1005210A3 (en) * 1991-09-17 1993-05-25 Kronos Int Inc Method for raising the purity of iron chloride technical.
NL9302035A (en) * 1993-11-24 1995-06-16 Piet De Vries Pickling method and a device therefor.
AT500245A1 (en) * 2004-04-19 2005-11-15 Deininger Karl Dipl Ing Process to render the liquid contents of a pickling bath suitable for disposal by distillation at predefined temperature and pressure
AT500245B1 (en) * 2004-04-19 2006-10-15 Deininger Karl Dipl Ing Process to render the liquid contents of a pickling bath suitable for disposal by distillation at predefined temperature and pressure
CN106145486A (en) * 2015-04-08 2016-11-23 天津市小猫线缆有限公司 A kind of special cable manufactures sewage disposal system

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