GB984378A - Improvements in or relating to sodium hypochlorite production - Google Patents

Improvements in or relating to sodium hypochlorite production

Info

Publication number
GB984378A
GB984378A GB4020162A GB4020162A GB984378A GB 984378 A GB984378 A GB 984378A GB 4020162 A GB4020162 A GB 4020162A GB 4020162 A GB4020162 A GB 4020162A GB 984378 A GB984378 A GB 984378A
Authority
GB
United Kingdom
Prior art keywords
chlorine
line
mixture
liquor
reactor
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
GB4020162A
Inventor
Michael Oliver Coulter
Ivan Phillip Warwick Davies
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.)
Murgatroyds Salt & Chem
Original Assignee
Murgatroyds Salt & Chem
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 Murgatroyds Salt & Chem filed Critical Murgatroyds Salt & Chem
Priority to GB4020162A priority Critical patent/GB984378A/en
Publication of GB984378A publication Critical patent/GB984378A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00Oxides or oxyacids of halogens; Salts thereof
    • C01B11/04Hypochlorous acid
    • C01B11/06Hypochlorites
    • C01B11/062Hypochlorites of alkali 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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

<PICT:0984378/C1/1> High strength sodium hypochlorite liquor containing more than 10% by weight of chlorine, a sodium chlorate concentration of less than 0.1% by weight and a free caustic content of not less than 0.1%, and preferably between 0.2 and 0.8%, by weight is continuously produced by the continuous absorption in an aqueous caustic soda solution of gaseous chlorine at the rate of between 0.01 and 0.5, and preferably between 0.05 and 0.2 pounds of chlorine per cubic foot of solution per minute at a temperature above 22 DEG C. and preferably between 25 DEG and 30 DEG C. The chlorine is supplied as a gaseous mixture containing between 25% and 99.9% by volume of molecular chlorine with inert diluent gas or gases, suitable mixtures being an air and chlorine mixture with molecular chlorine content between 50% and 75% by volume, compressed cell gas with molecular chlorine content of about 97% by volume resulting from the electrolysis of brine, and the uncondensed residue from the condensation of chlorine gas produced in electrolytic cells. In Fig. 3, a reactor 1 is fed with chlorine gas mixture through line 2 and sparge assembly 3 and with caustic liquor through line 4. An emergency overflow line 5 connects the reactor with an empty vessel 6. Residual inert gases are vented through line 7. A detector 8 automatically records the redex potential of the mixture and controls the feed rate of either chlorine or caustic liquor by operation of either valve 9 or valve 10, the feed rate of the other component being controlled manually. Hypochlorite liquor is removed through line 11, passed to a cooler 12 and recirculated to the reactor for cooling purposes after a minor portion has been bled off via line 13 to storage, the rate of withdrawal being controlled automatically to maintain a constant level in vessel 1.
GB4020162A 1962-10-24 1962-10-24 Improvements in or relating to sodium hypochlorite production Expired GB984378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4020162A GB984378A (en) 1962-10-24 1962-10-24 Improvements in or relating to sodium hypochlorite production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4020162A GB984378A (en) 1962-10-24 1962-10-24 Improvements in or relating to sodium hypochlorite production

Publications (1)

Publication Number Publication Date
GB984378A true GB984378A (en) 1965-02-24

Family

ID=10413707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4020162A Expired GB984378A (en) 1962-10-24 1962-10-24 Improvements in or relating to sodium hypochlorite production

Country Status (1)

Country Link
GB (1) GB984378A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054996A1 (en) * 1980-12-22 1982-06-30 SOLVAY & Cie (Société Anonyme) Process and plant for preparing concentrated aqueous alkaline-metal hypochlorite solutions
WO1991003421A1 (en) * 1989-09-05 1991-03-21 Olin Corporation High purity chloric acid
EP1773715A2 (en) * 2004-07-12 2007-04-18 Powell Technologies LLC Manufacture of high-strength, low-salt hypochlorite bleach
WO2018026260A1 (en) * 2016-08-05 2018-02-08 Cheng Chew Kong System and method for recovering sodium hypochlorite from exhaust chlorine gas

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054996A1 (en) * 1980-12-22 1982-06-30 SOLVAY & Cie (Société Anonyme) Process and plant for preparing concentrated aqueous alkaline-metal hypochlorite solutions
WO1991003421A1 (en) * 1989-09-05 1991-03-21 Olin Corporation High purity chloric acid
EP1773715A2 (en) * 2004-07-12 2007-04-18 Powell Technologies LLC Manufacture of high-strength, low-salt hypochlorite bleach
EP1773715A4 (en) * 2004-07-12 2009-03-18 Powell Technologies Llc Manufacture of high-strength, low-salt hypochlorite bleach
WO2018026260A1 (en) * 2016-08-05 2018-02-08 Cheng Chew Kong System and method for recovering sodium hypochlorite from exhaust chlorine gas

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