Process Overview

  • Thomas F. O’Brien
  • Tilak V. Bommaraju
  • Fumio Hine


This chapter presents a general overview of the processing steps in a typical chlor-alkali plant. As shown in Fig. 6.1, we can divide the process into three major steps. These are the preparation of purified brine, electrolysis, and processing of the crude products of electrolysis. The figure also subdivides brine preparation into its main elements. Later sections present flowsheets in block form for each of the process steps. A discussion of the differences among the various types of electrolyzer technology accompanies each flow diagram. Separate flowsheets for the complete processes for the three electrolyzer technologies are also available in the literature [1, 2].


Current Efficiency Membrane Cell Caustic Solution Cathode Current Efficiency Diaphragm Cell 
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  1. 1.
    T.V. Bommaraju, B. Lüke, G. Dammann, T.F. O’Brien, and M.C. Blackburn, Chlorine. In Kirk-Othmer Encyclopedia of Chemical Technology, on-line edition, John Wiley and Sons, Inc., New York (2002).Google Scholar
  2. 2.
    P. Schmittinger, Chlorine-Principles and Industrial Practice, Wiley-VCH, Weinheim (2000), pp. 20–22.Google Scholar
  3. 3.
    G.W. Cowell, A.D. Martin, and B.K. Revill, A New Improved Method for the Determination of Sodium Hydroxide Current Efficiency in Membrane Cells. In T.C. Wellington (ed.), Modern Chlor-Alkali Technology, vol. 5, Elsevier Applied Science, London (1992), p. 143.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc 2005

Authors and Affiliations

  • Thomas F. O’Brien
    • 1
  • Tilak V. Bommaraju
    • 2
  • Fumio Hine
    • 3
  1. 1.Independent Consultant MediaUSA
  2. 2.Independent Consultant Grand IslandNew YorkUSA
  3. 3.Nagoya Institute of TechnologyNagoyaJapan

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