CA1076777A - Process for purifying sodium hydroxide - Google Patents

Process for purifying sodium hydroxide

Info

Publication number
CA1076777A
CA1076777A CA251,364A CA251364A CA1076777A CA 1076777 A CA1076777 A CA 1076777A CA 251364 A CA251364 A CA 251364A CA 1076777 A CA1076777 A CA 1076777A
Authority
CA
Canada
Prior art keywords
sodium hydroxide
crystals
slurry
aqueous solution
naoh
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
CA251,364A
Other languages
English (en)
French (fr)
Inventor
Keiichi Nakaya
Suekazu Hirata
Kunio Sato
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Application granted granted Critical
Publication of CA1076777A publication Critical patent/CA1076777A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/28—Purification; Separation
    • C01D1/30—Purification; Separation by crystallisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1431—Dissolved air flotation machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B03D1/242—Nozzles for injecting gas into the flotation tank
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/28—Purification; Separation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA251,364A 1975-04-28 1976-04-28 Process for purifying sodium hydroxide Expired CA1076777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50050677A JPS51126399A (en) 1975-04-28 1975-04-28 Purification of sodium hydroxide

Publications (1)

Publication Number Publication Date
CA1076777A true CA1076777A (en) 1980-05-06

Family

ID=12865557

Family Applications (1)

Application Number Title Priority Date Filing Date
CA251,364A Expired CA1076777A (en) 1975-04-28 1976-04-28 Process for purifying sodium hydroxide

Country Status (10)

Country Link
US (2) US4065270A (OSRAM)
JP (1) JPS51126399A (OSRAM)
AU (1) AU498070B2 (OSRAM)
BE (1) BE841129A (OSRAM)
CA (1) CA1076777A (OSRAM)
DE (1) DE2618242C3 (OSRAM)
FR (1) FR2309470A1 (OSRAM)
GB (1) GB1486407A (OSRAM)
IT (1) IT1058988B (OSRAM)
NL (1) NL7604189A (OSRAM)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251490A (en) * 1979-06-13 1981-02-17 The H. K. Ferguson Company Controlled temperature purification of aqueous sodium hydroxide solution
US4273657A (en) * 1979-06-14 1981-06-16 E. I. Du Pont De Nemours & Co. Two-stage flotation purification of NaOH
US4277331A (en) * 1979-06-14 1981-07-07 E. I. Du Pont De Nemours & Co. One-stage flotation purification of NaOH
DE19710449A1 (de) * 1997-03-13 1998-09-17 Basf Ag Verfahren zur Aufreinigung von Natronlauge

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699377A (en) * 1953-08-14 1955-01-11 Int Minerals & Chem Corp Production of potassium hydroxide
US3477829A (en) * 1966-02-25 1969-11-11 Chicago Bridge & Iron Co Sodium hydroxide monohydrate crystallization process
FR1515865A (fr) * 1966-06-14 1968-03-08 Saint Gobain Techn Nouvelles Perfectionnements à la séparation d'un liquide et d'un solide ou liquide immiscible en suspension
US3551897A (en) * 1968-09-06 1970-12-29 Ibm Method of controlling ore flotation
US3701421A (en) * 1970-04-29 1972-10-31 Technequip Ltd Method of mineral separation by froth floatation
US3799749A (en) * 1971-07-19 1974-03-26 Dow Chemical Co Method of purifying naoh solutions
BE790662A (fr) * 1971-10-27 1973-04-27 Dow Chemical Co Procede de recuperation d'hydroxyde de sodium a partir d'une solution aqueuse de chlorure de sodium
JPS5532644B2 (OSRAM) * 1972-09-11 1980-08-26
JPS508707A (OSRAM) * 1973-05-28 1975-01-29
JPS5232497A (en) * 1975-09-08 1977-03-11 Hitachi Ltd Combination of separators

Also Published As

Publication number Publication date
JPS5716926B2 (OSRAM) 1982-04-08
FR2309470B1 (OSRAM) 1981-06-12
JPS51126399A (en) 1976-11-04
US4065270A (en) 1977-12-27
AU1337476A (en) 1977-11-03
BE841129A (fr) 1976-10-26
DE2618242A1 (de) 1976-11-11
FR2309470A1 (fr) 1976-11-26
USRE30411E (en) 1980-10-07
DE2618242B2 (de) 1979-08-23
IT1058988B (it) 1982-05-10
NL7604189A (nl) 1976-11-01
GB1486407A (en) 1977-09-21
DE2618242C3 (de) 1980-05-14
AU498070B2 (en) 1979-02-08

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Legal Events

Date Code Title Description
MKEX Expiry