FR2179569A1 - Reducing carboxylic impurities in chloride-contg - salt solns - by light-catalysed chlorination - Google Patents

Reducing carboxylic impurities in chloride-contg - salt solns - by light-catalysed chlorination

Info

Publication number
FR2179569A1
FR2179569A1 FR7212821A FR7212821A FR2179569A1 FR 2179569 A1 FR2179569 A1 FR 2179569A1 FR 7212821 A FR7212821 A FR 7212821A FR 7212821 A FR7212821 A FR 7212821A FR 2179569 A1 FR2179569 A1 FR 2179569A1
Authority
FR
France
Prior art keywords
soln
salt
carboxylic
esp
pka
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
FR7212821A
Other languages
French (fr)
Other versions
FR2179569B1 (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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 to CA138,979A priority Critical patent/CA971506A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to JP3610872A priority patent/JPS5548876B2/ja
Priority to FR7212821A priority patent/FR2179569A1/en
Priority to DE2217644A priority patent/DE2217644C3/en
Priority to NL7205214A priority patent/NL7205214A/xx
Priority to AU43835/72A priority patent/AU462304B2/en
Publication of FR2179569A1 publication Critical patent/FR2179569A1/en
Application granted granted Critical
Publication of FR2179569B1 publication Critical patent/FR2179569B1/fr
Priority to BE192468A priority patent/BE872953Q/en
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/123—Ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/14—Purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/24—Chlorides
    • C01F11/32—Purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00—Compounds of magnesium
    • C01F5/26—Magnesium halides
    • C01F5/30—Chlorides
    • 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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Water Supply & Treatment (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Reducing concn. of water-sol. carboxylic impurities esp. AcOH or water-soluble acetates, in Cl-contg. salt solns. is effected by contacting the contaminated aq. salt soln. with Cl2 and exposing the soln. to light having 3600 angstroms wave-length, supplied esp. at 0.1-10 watt luminous energy/28.3 l. of reaction mixt. Reaction pref. requires 1-1.5 moles Cl2/mole carboxylic impurity in salt soln. Chlorinated hydrocarbons, which can be collected, are formed as process by-prods. Salt soln. pH is adjusted w.r.t. pKa of carboxylic contaminant, to satisfy equation pKa - 2.5 = pH = pKa + 1. Cl2 concn. of salt soln. is kept esp. at 50 ppm. Reaction temps. >90 degrees C up to soln. b.pt. are advantageous and obviate cooling of ind. effluents. Process is applicable to carboxylic acid precursors, e.g. alkylene glycols.
FR7212821A 1972-04-05 1972-04-12 Reducing carboxylic impurities in chloride-contg - salt solns - by light-catalysed chlorination Granted FR2179569A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA138,979A CA971506A (en) 1972-04-05 1972-04-05 Treatment of brines by chlorination
JP3610872A JPS5548876B2 (en) 1972-04-05 1972-04-12
FR7212821A FR2179569A1 (en) 1972-04-05 1972-04-12 Reducing carboxylic impurities in chloride-contg - salt solns - by light-catalysed chlorination
DE2217644A DE2217644C3 (en) 1972-04-05 1972-04-12 Process for reducing the concentration of water-soluble carboxylic impurities in chloride-containing salt solutions
NL7205214A NL7205214A (en) 1972-04-05 1972-04-18
AU43835/72A AU462304B2 (en) 1972-04-05 1972-06-23 treatment OF BRINES BY CHLORINATION
BE192468A BE872953Q (en) 1972-04-05 1978-12-21 TREATMENT OF BRINE BY CHLORINATION

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CA138,979A CA971506A (en) 1972-04-05 1972-04-05 Treatment of brines by chlorination
JP3610872A JPS5548876B2 (en) 1972-04-05 1972-04-12
FR7212821A FR2179569A1 (en) 1972-04-05 1972-04-12 Reducing carboxylic impurities in chloride-contg - salt solns - by light-catalysed chlorination
DE2217644A DE2217644C3 (en) 1972-04-05 1972-04-12 Process for reducing the concentration of water-soluble carboxylic impurities in chloride-containing salt solutions
AU43835/72A AU462304B2 (en) 1972-04-05 1972-06-23 treatment OF BRINES BY CHLORINATION

Publications (2)

Publication Number Publication Date
FR2179569A1 true FR2179569A1 (en) 1973-11-23
FR2179569B1 FR2179569B1 (en) 1975-03-07

Family

ID=27506906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7212821A Granted FR2179569A1 (en) 1972-04-05 1972-04-12 Reducing carboxylic impurities in chloride-contg - salt solns - by light-catalysed chlorination

Country Status (7)

Country Link
JP (1) JPS5548876B2 (en)
AU (1) AU462304B2 (en)
BE (1) BE872953Q (en)
CA (1) CA971506A (en)
DE (1) DE2217644C3 (en)
FR (1) FR2179569A1 (en)
NL (1) NL7205214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473492A1 (en) * 1980-01-10 1981-07-17 Asahi Glass Co Ltd PURIFICATION OF AQUEOUS POTASSIUM CHLORIDE SOLUTION CONTAINING ANTI-AGGLUTINATION REAGENT

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52128878A (en) * 1976-04-22 1977-10-28 Ebara Infilco Co Ltd Treatment of waste liquid
US4126526A (en) * 1977-11-16 1978-11-21 The Lummus Company Cyclic process for production of alkylene oxide using electrolysis of brine
DE69415736T2 (en) * 1993-02-03 1999-05-20 Kurita Water Ind Ltd METHOD FOR PRODUCING PURE WATER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473492A1 (en) * 1980-01-10 1981-07-17 Asahi Glass Co Ltd PURIFICATION OF AQUEOUS POTASSIUM CHLORIDE SOLUTION CONTAINING ANTI-AGGLUTINATION REAGENT

Also Published As

Publication number Publication date
CA971506A (en) 1975-07-22
NL7205214A (en) 1973-10-22
FR2179569B1 (en) 1975-03-07
AU4383572A (en) 1974-01-03
BE872953Q (en) 1979-06-21
AU462304B2 (en) 1975-06-19
JPS494673A (en) 1974-01-16
DE2217644C3 (en) 1981-02-05
DE2217644B2 (en) 1980-05-22
JPS5548876B2 (en) 1980-12-09
DE2217644A1 (en) 1973-10-18

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Legal Events

Date Code Title Description
ST Notification of lapse