Modern chlor-alkali technology, volume 5 : [papers ... presented at the 1991 London International Chlorine Symposium held at the Intercontinental Hotel from 5th - 7th June

The papers in this volume were presented at the 1991 London International Chlorine Symposium held at the intercontinental Hotel from 5th-7th June. This was the sixth symposium in a series organized by the Electrochemical Technology Group of the SCI and held in London at intervals of three years. A continued high level of interest in the proceedings was demonstrated by offers of 40 papers, and of these 26 were selected for inclusion in the programme. The conference intention was to reflect the developments in chlorine technology hardware and software and to address the economic, political, environmental and safety issues which are increasingly impacting on the chlorine industry as the millennium approaches. In the event the five sessions were broadly based on the following topic areas: Chlorine and the Environment Membranes 1 Membranes 2 Chlorine Safety Electrodes/Electrode Reactions Not unexpectedly, the importance of membrane technology to the industry was reflected by the inclusion of 9 papers. However, the traditional diaphragm, mercury and chlorate cell technologies were also represented. The academic base of the organizing body was underlined by the selection of papers from the Universities of Milan and Calgary, and by the opening and closing remarks of the Chairman of the SCI Electrochemical Technology Group, Frank Goodridge, Professor Emeritus of Newcastle University. The opportunity was taken to present the SCI Castner Medal to Dr H. Miyake of Asahi Glass Co. Ltd for his work on the design and development of Flemion electrodes. Front Matter....Pages i-xii The Effect Of Green Issues On The Chlorine/Caustic Soda Balance....Pages 1-12 Changes in the Chemical Requirements of the Bleached Kraft Pulp Industry....Pages 13-22 ICI’ Hydecat’ Process for the Catalytic Destruction of Hypochlorite Effluent Streams....Pages 23-34 Green Aspects of Chlorine Bleach—Approaches and National Characteristic....Pages 35-41 Cyclochrome—The Recycle of Sodium Dichromate in Sodium Chlorate Manufacture....Pages 43-57 The Design and Development of Flemion Membranes....Pages 59-67 Understanding Membrane Operating Conditions....Pages 69-80 Factors Which Influence the Permselectivity of High Performance Chlor-Alkali Membranes....Pages 81-92 Natural High Flow Rate Recirculation: A Highlight on De Nora Technologies Membrane Electrolyzers....Pages 93-104 Safety and Economy of Membrane Cell Electrolyzers....Pages 105-116 Recent Development and Operation Dynamics of New Ion Exchange Membrane Series Aciplex®-F from Asahi Chemical....Pages 117-129 Nation® Membranes for the 1990’s....Pages 131-141 A New Improved Method for the Determination of Sodium Hydroxide Current Efficiency in Membrane Cells....Pages 143-158 Advances in Flemion Membranes for Chlor-Alkali Production....Pages 159-175 Mercury/Membrane Cells --- When to Change: a Chlorine Producer’s Considerations Effecting the Timing for this Change-Over....Pages 177-184 Issues Involved in Membrane Conversion of a Chlor-Alkali Business....Pages 185-198 Production of 70% Caustic Soda Directly from Decomposer, an Effective Way to Save Energy....Pages 199-208 PolyramixTM Diaphragm a Commercial Reality....Pages 209-221 Chlorine Vapor Suppression Tests D.O.E. Nevada Test Site June 1990....Pages 223-231 Chlorine Safety....Pages 233-238 Design and Operation of Emergency Chlorine Absorption Systems....Pages 239-256 Lurgi’s Experience with Steel and Raney-Nickel as Cathode Material....Pages 257-267 Improvement of Electrode Performance Resulting from Combined Optimization of Coating Composition and Structural Design....Pages 269-280 Hydrogen Evolution on Oxide Electrodes....Pages 281-294 Impurity Effects in Chlorate Plants....Pages 295-306 Caustic Evaporator Corrosion: Causes and Remedy....Pages 307-320 Back Matter....Pages 321-328