FR2326379A1 - Neutral calcium hypochlorite prepn. - recycling all mother liquors, recovering solid component and avoiding all pollution - Google Patents

Neutral calcium hypochlorite prepn. - recycling all mother liquors, recovering solid component and avoiding all pollution

Info

Publication number
FR2326379A1
FR2326379A1 FR7529461A FR7529461A FR2326379A1 FR 2326379 A1 FR2326379 A1 FR 2326379A1 FR 7529461 A FR7529461 A FR 7529461A FR 7529461 A FR7529461 A FR 7529461A FR 2326379 A1 FR2326379 A1 FR 2326379A1
Authority
FR
France
Prior art keywords
hypochlorite
calcium hypochlorite
neutral
neutral calcium
recycling
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
FR7529461A
Other languages
French (fr)
Other versions
FR2326379B1 (en
Inventor
Jean-Claude Guelen
Pierre Portes
Jean-Paul Haller
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.)
Potasse & Produits Chimiques
Original Assignee
Potasse & Produits Chimiques
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 Potasse & Produits Chimiques filed Critical Potasse & Produits Chimiques
Priority to FR7529461A priority Critical patent/FR2326379A1/en
Priority to NLAANVRAGE7602719,A priority patent/NL168192C/en
Priority to AU12297/76A priority patent/AU499360B2/en
Priority to DE2612440A priority patent/DE2612440B2/en
Priority to JP51033053A priority patent/JPS51120995A/en
Priority to CA248,863A priority patent/CA1089626A/en
Priority to IT48712/76A priority patent/IT1057379B/en
Priority to ES446397A priority patent/ES446397A1/en
Priority to GB12328/76A priority patent/GB1544268A/en
Priority to MX76164079A priority patent/MX143404A/en
Publication of FR2326379A1 publication Critical patent/FR2326379A1/en
Application granted granted Critical
Publication of FR2326379B1 publication Critical patent/FR2326379B1/fr
Priority to US06/124,854 priority patent/US4258024A/en
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/04—Hypochlorous acid
    • C01B11/06—Hypochlorites
    • C01B11/064—Hypochlorites of alkaline-earth metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Neutral Ca hypochlorite is prepd. by (a) forming dibasic Ca hypochlorite by adding lime to recycled mother liquor from step. (f), (b) simultaneously chlorinating caustic soda and the dibasic Ca hydrochlorite from (a) in the presence of preformed crystals of sodium chloride and neutral calcium hypochlorite, (c) sepg. the neutral Ca hypochlorite from the sodium chloride by flotation, (d) sepg. the NaCl from the mother liquor from (c), (e) washing the NaCl with the dibasic Ca hypochlorite mother liquor, (f) filtering the suspensions of sodium chloride and neutral calcium hypochlorite, and (g) recycling the mother liquors to steps (b) and (a), respectively. Gives neutral calcium hypochlorite having a high content of active chlorides all of the mother liquors are recycled, thus avoiding pollution problems. Total recovery of solid components is effected.
FR7529461A 1975-03-27 1975-09-19 Neutral calcium hypochlorite prepn. - recycling all mother liquors, recovering solid component and avoiding all pollution Granted FR2326379A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR7529461A FR2326379A1 (en) 1975-09-19 1975-09-19 Neutral calcium hypochlorite prepn. - recycling all mother liquors, recovering solid component and avoiding all pollution
NLAANVRAGE7602719,A NL168192C (en) 1975-03-27 1976-03-16 PROCESS FOR PREPARING NEUTRAL CALCIUM HYPOCHLORITE.
DE2612440A DE2612440B2 (en) 1975-03-27 1976-03-24 Environmentally friendly process for the production of neutral calcium hypochlorite with a high content of active chlorine
AU12297/76A AU499360B2 (en) 1975-03-27 1976-03-24 Manufacture of neutral calcium hypochlorite witha high content of active chlorine
CA248,863A CA1089626A (en) 1975-03-27 1976-03-25 Non-pollutant process for the manufacture of neutral calcium hypochlorite
IT48712/76A IT1057379B (en) 1975-03-27 1976-03-25 PROCEDURE FOR THE PRODUCTION OF NEUTRAL CALCIUM HYPOCHLORITE WITH HIGH ACTIVE CHLORINE CONTENT
JP51033053A JPS51120995A (en) 1975-03-27 1976-03-25 Manufacturing process for calcium hypochloride containing large quantjty of active chlorine without raising pollution
ES446397A ES446397A1 (en) 1975-03-27 1976-03-26 Non-pollutant process for the manufacture of neutral calcium hypochlorite with a high content of active chlorine
GB12328/76A GB1544268A (en) 1975-03-27 1976-03-26 Non-pollutant process for the manufacture of neutral calcium hypochlorite with a high content of active chlorine
MX76164079A MX143404A (en) 1975-03-27 1976-03-29 IMPROVED METHOD FOR THE PRODUCTION OF NEUTRAL CALCIUM HYPOCHLORITE OF HIGH PURITY
US06/124,854 US4258024A (en) 1975-03-27 1980-02-26 Non-pollutant process for the manufacture of neutral calcium hypochlorite with a high content of active chlorine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7529461A FR2326379A1 (en) 1975-09-19 1975-09-19 Neutral calcium hypochlorite prepn. - recycling all mother liquors, recovering solid component and avoiding all pollution

Publications (2)

Publication Number Publication Date
FR2326379A1 true FR2326379A1 (en) 1977-04-29
FR2326379B1 FR2326379B1 (en) 1978-11-17

Family

ID=9160455

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7529461A Granted FR2326379A1 (en) 1975-03-27 1975-09-19 Neutral calcium hypochlorite prepn. - recycling all mother liquors, recovering solid component and avoiding all pollution

Country Status (1)

Country Link
FR (1) FR2326379A1 (en)

Also Published As

Publication number Publication date
FR2326379B1 (en) 1978-11-17

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Legal Events

Date Code Title Description
ST Notification of lapse