The Integral Heat of Dilution in NaOH-KOH Aqueous Solution

DOI
  • AKIYA Takaji
    Division of Process Research and Development, National Chemical Laboratory for Industry
  • OWA Masaru
    Division of Process Research and Development, National Chemical Laboratory for Industry
  • KAWASAKI Shigetake
    Division of Process Research and Development, National Chemical Laboratory for Industry

Bibliographic Information

Other Title
  • NaOH-KOH混合水溶液の積分希釈熱について

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Description

The heat of dilution in NaOH-KOH aqueous solution was measured by twin-type calorimeter at25°C and 50°C under various KOH/(KOH+NaOH) ratio and the integral heat of dilution was obtainedin the range of (KOH+NaOH) concentration between 48 wt% and 5 wt%.<BR>The constants in Ausländer's equation on integral heat of dilution was estimated from the experimentalresults using the least square method and the integral heat of dilution estimated by the Ausländer's equation showed a good approximation to the experimental one.<BR>Then, using the experimental results, the heat balance in the process of potassium recovery andcaustic soda purification from the crude caustic soda solution containing potassium hydroxide by the crystallization of NaOH·3.5H2O and the heat storage density of the caustic solution were discussed.

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Details 詳細情報について

  • CRID
    1390001205449965952
  • NII Article ID
    130004674750
  • DOI
    10.11457/swsj1965.33.207
  • ISSN
    03694550
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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