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Boiler Feed Water Treatment

3rd Edition, August 1, 1951

Complete Document



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Active, Most Current

EN
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ISBN #: 9780820600987
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Product Details:

  • Revision: 3rd Edition, August 1, 1951
  • Published Date: August 1, 1951
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Chemical Publishing Company (CPC)
  • Page Count: 232
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Contents

PART 1. NATURAL WATER SUPPLIES
  • Rain water
  • Surface water
  • River water
  • Spring water
  • Well water
  • Canal water
  • Pit water
  • Effects of drought
  • Condensate as feed water
  • Water blending


PART 2. SCALE FORMATION
  • Effect of scale
  • Lime-soda process
  • Hot lime-soda softening
  • General notes on plant
  • Nuclear precipitation
  • Caustic soda softening
  • Sodium aluminate with lime-soda treatment
  • Zeolite or base-exchange softeners
  • Partial Zeolite softening
  • Hydrogen and demineralizing zeolites
  • Lime-base exchange treatment
  • The B.B.A. dejector
  • Lime-barium softeners
  • Necessity for conditioning boiler feed
  • Colloidal conditioning
  • Mechanism of scale formation
  • Carbonate and phosphate conditioning
  • Use of metaphosphate and pyrophosphate
  • Budenheim phosphate treatment
  • Silica scales and deposits
  • Turbine blade deposits
  • Potassium treatment
  • Chlorination of condenser cooling water
  • Scale formation in cooling water systems
  • Scale formation in economizers 
  • Electrical scale prevention
  • Removal of scales and deposits


PART 3. CORROSION
  • Early theories of corrosion
  • Corrosion by differential aeration 
  • Dissolved oxygen Deaeration by chemical methods
  • Deaeration by physical methods
  • Corrosion due to unstable salts 
  • Danger of soft water Corrosion by carbon dioxide 
  • Superheater and turbine corrosion
  • Economizer corrosion
  • The treatment of alkaline waters
  • Caustic embrittlement
  • Hydrogen ion concentration
  • Determination of pH values
  • Hydrogen ions and corrosion
  • Coagulation control
  • Softening plant control
  • Boiler water recirculation
  • Electrical methods of preventing corrosion


PART 4. FOAMING AND PRIMING
  • Causes of priming
  • Balanced layer film formation
  • Foam stabilization
  • Prevention of priming
  • Blow-down control
  • Intermittent blow-down 
  • Continuous blow-down systems
  • Use of condensate and blending of waters
  • Removal of oil from water
  • Methods of de-oiling water


PART 5. ANALYSIS AND ROUTINE TESTING
  • Sampling
  • Standard solutions
  • Frequency of analyses
  • Units
  • Control tests for softening
  • Raw water
  • Chemicals required for treatment
  • Control tests for softening
  • Treated water
  • Tests for carbonate and phosphate conditioning
  • Dissolved oxygen
  • Blow-down testing
  • Embrittlement ratios
  • General water analysis
  • Analysis of scales
  • Residual chlorine
  • Tannins
  • Appendix
  • Index 
  • Standard solutions
  • Reagents-Clark's table of hardnesses
  • Chemical factors
  • Conversion tables
  • Summary of recommended practice