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Power plant Water Chemistry- A Practical Guide

(c) All rights reserved to the respective owners

Contents

⬛ INTRODUCTION TO STEAM GENERATION WATER CHEMISTRY SYSTEMS

  • Condensate feed water chemistry 

⬛ INTRODUCTION 

  • Condensate/Feedwater System Construction Materials 
  • Condensate Chemistry Dissolved Oxygen 
  • Carbonic Acid Corrosion in Industrial Steam Generating Systems 
  • Mechanical Removal of Dissolved Oxygen and Other Gases 
  • Chemical Control of Dissolved Oxygen 
  • Oxygen Scavengers 
  • Safe Hydrazine Feed Systems 
  • Industrial Oxygen Scavenging 
  • Flow-Accelerated Corrosion 
  • Copper-Alloy Corrosion and Preventive Measures 
  • Additional Corrosion Control Requirements 
  • Oxygenated Treatment  
  • Feedwater Chemistry Guidelines 
  • Chemical Feed Systems 
  • Monitoring and Control of Condensate Contaminants 
  • Condensate Polishing and Treatment of Condensate Return to
  • Industrial Boilers 
  • High-Pressure Boiler Condensate Polishing 
  • Deep-Bed Condensate Polishing 
  • Powdered-Resin Condensate Polishing 
  • Industrial Plant Condensate Polishing 
  • Conclusion 
  • Supplement -: Why Condenser Performance is Important 
  • Supplement -: BASIC Program for Monitoring Condenser
  • Performance 
  • Case Histories 

⬛ BOILER WATER CHEMISTRY 

  • Introduction  
  • Drum-Type Boiler Design  
  • Package Drum Boilers 
  • Field-Erected Drum Units 
  • Circulating Fluidized Bed Boilers and Heat Recovery
  • Steam Generators 
  • Once-Through Steam Generation 
  • Boiler Water Contamination 
  • Iron Oxide Deposition 
  • Condenser In-leakage 
  • Boiler Water Treatment Programs 
  • Early Boiler Water Treatment 
  • Coordinated and Congruent Phosphate Treatment 
  • Phosphate Hideout 
  • Alternative Phosphate and Non-phosphate Programs 
  • Equilibrium Phosphate Treatment 
  • Phosphate Treatment 
  • Chelants and Polymer Treatments 
  • Caustic Treatment 
  • All-Volatile Treatment 
  • Oxygenated Treatment 
  • Heat Recovery Steam Generators 
  • Sampling 
  • Layup and Off-Line Corrosion Protection 
  • Conclusion 
  • Supplement -: BASIC Program for Calculating
  • Sodium-to-Phosphate Ratios of Boiler Water 
  • Case Histories

⬛ STEAM CHEMISTRY 

  • Introduction 
  • Primary Carryover Products 
  • Copper 
  • Sodium Hydroxide 
  • Chloride and Sulfate 
  • Iron Oxides 
  • Silica 
  • Sodium Phosphates 
  • Organics 
  • Mechanical Carryover 
  • Vaporous Carryover 
  • Solids Introduction by Contaminated Attemperator Water  
  • Superheater Exfoliation 
  • Water Chemistry Limits to Prevent Steam Contamination by Carryover 
  • Boiler Water Chemistry Guidelines for Control of Steam Chemistry 
  • Prevention of Contamination via the Attemperator System 
  • Control of Superheater and Reheater Exfoliation 
  • Steam Chemistry Monitoring 
  • Steam Chemistry Issues at Industrial Plants without Turbines 
  • Conclusion 
  • Case histories 

⬛ HIGH-PURITY MAKEUP WATER TREATMENT 

  • Introduction 
  • Pre treatment 
  • Microbiocide Feed 
  • Clarification and Softening 
  • Filtration 
  • Activated Carbon Filtration 
  • Additional Pretreatment Methods 
  • High-Purity Makeup Treatment Methods 
  • Ion Exchange 
  • Exchange Groups 
  • Strong Acid Cation Resins 
  • Weak Acid Cation Resins 
  • Strong Base Anion Resins 
  • Weak Base Anion Resins 
  • Demineralizer Configurations and Mixed-Bed Exchangers 
  • Degasifiers 
  • Regeneration and Co-Current/Counter-current Systems 
  • Strong Base Anion Regeneration 
  • Weak Acid and Weak Base Exchangers 
  • Demineralizer Performance Calculations 
  • Strong Acid Cation Exchanger Calculations 
  • Strong Base Anion Exchanger Calculations 
  • Weak Acid and Weak Base Performance 
  • System Design Calculations 
  • Resin Volume and Vessel Diameter Calculations 
  • Backwash Requirements 
  • Regeneration Requirements 
  • Rinsing 
  • Mixed-Bed Polishing 
  • Monitoring Performance of Ion Exchanger Vessels 
  • Demineralizer Component Fundamentals 
  • Distributors 
  • Vessels 
  • Valves 
  • Materials 
  • Packed-Bed Demineralizers 
  • Other Makeup Technologies 
  • Reverse Osmosis 
  • RO Membrane Design 
  • RO Membrane Material 
  • RO Pretreatment 
  • RO Design 
  • RO Components 
  • RO Flow Control and Monitoring 
  • RO Alarms 
  • Size of a Reverse Osmosis System 
  • RO Cleaning 
  • Electrodialysis and Electrodialysis Reversal 
  • Electro-deionization 
  • Conclusion 
  • Supplement -: UV Light Disinfection 
  • Supplement -: Multimedia Filtration 
  • Supplement -: Activated Carbon 
  • Supplement -: Sulfuric Acid and Caustic Specifications 
  • Supplement -: Silt Density Index 

⬛ COOLING WATER CHEMISTRY 

  • Introduction 
  • Cooling Systems 
  • Once-Through Systems 
  • Open Recirculating Systems 
  • Cooling Towers 
  • Cooling Tower Calculations 
  • Closed Cooling Systems 
  • Cooling Water Corrosion, Scale, and Deposit Mechanisms 
  • Corrosion 
  • Corrosion Influencing Mechanisms 
  • Nonmetallic Corrosion 
  • Corrosion Inhibitors 
  • Scale 
  • Calcium Carbonate 
  • Other Scales 
  • Scale Control 
  • Acid Feed 
  • Alkaline Treatment Methods 
  • Fouling 
  • Nonmicrobiological Fouling Control Methods 
  • Microbiological Fouling 
  • Control of Microbiological Organisms 
  • Chlorine 
  • Non-oxidizing Biocides 
  • Biocide Discharge Limits— Future Trends 
  • Macro fouling 
  • Zebra Mussels 
  • Conclusion 
  • Supplement -: Cooling Tower BASIC Program 
  • Supplement -: LSI and RSI BASIC Program 
  • Supplement -: Acid Feed Calculations 
  • Supplement -: Sizing a Side-stream Filter 
  • Supplement -: Specifications for Sodium Hypochlorite 
  • Case Histories 
⬛ SAMPLING 
  • Introduction 
  • The Need for Sampling 
  • Sample Point Selection 
  • Makeup System Effluent 
  • Condensate Storage Tank Effluent 
  • Condensate Pump Discharge 
  • Condensate Polisher Effluent 
  • Deaerator Inlet 
  • Deaerator Outlet/Boiler Feed Pump Suction 
  • Feedwater or Economizer Inlet 
  • Boiler Water 
  • Saturated Steam 
  • Main/Reheat Steam 
  • Cogeneration/Combined-Cycle/Industrial Plant Sampling 
  • Techniques to Obtain Representative Samples 
  • Sample Nozzle Design 
  • Sample Nozzle Installation 
  • Sample Point Location 
  • Primary Sample Conditioning 
  • Sample Flow Rate and Line Size 
  • Final Sample Conditioning 
  • Data Acquisition 
  • Conclusion 
  • Case Histories 
(c) All rights reserved to the respective owners

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