Course Objectives:

• Explain the purpose of online boiler cleaning.
• Explain its effect on thermal efficiency.
•  Define key sootblower terms.
• Identify sootblower components.
•  Compare different cleaning media.
•  Justify selection of the appropriate medium.
•  Identify deposit characteristics.
•  Identify cleaning equipment used.
• Identify deposit behavior.
• Identify cleaning equipment used.
• Identify deposit characteristics.
•  Identify cleaning equipment used.
•  Identify cleaning methods.
• Recognize precautions to prevent damage.
•  Identify regenerative-type cleaning methods.
•  Identify tubular-type cleaning methods.
•  Recognize precautions against erosion and thermal shock.
•  Apply proper sequencing and control of cleaning cycles.

Course Outlines:

Introduction to Sootblowing

• Purpose of online boiler cleaning
• Effect on thermal efficiency and flue gas temperature control

 Sootblower Terminology

• Cleaning medium
• Peak impact pressure
• Jet progression velocity
• Cleaning radius
• Tube bank penetration
• Lance tube, wall box, feed tube, element

 Cleaning Media Selection

• Saturated steam
• Superheated steam
• Compressed air
• Water
• Advantages/disadvantages of each

Furnace Cleaning

• Ash deposit characteristics (loose vs. slag)
• Short retractable wall sootblowers
• Waterlances and selective pattern waterlances
• HydroJet and HydroJet Retractable systems
• LC IR3Z Sootblower
• LC HydroJet Retractable system
• HydroJet Cross retractable system
• Special zones: hopper slopes, wing walls, overfire air ports

Convection Pass Cleaning

• Deposit behavior in superheaters/reheaters
• Long retractable sootblowers
• Nozzle performance and sootblowing control
• One-way cleaning
• Oscillator sootblowers
• Extended lance sootblowers
• IK 700 sootblower

 Back Pass/Economizer Cleaning

• Deposit characteristics (dusty, popcorn ash)
• Fixed position sootblowers
• Rake-type sootblowers
• Sonic horns

 SCR Catalyst Cleaning

• Steam vs. air cleaning
• Acoustic devices (site-specific alternative)
• Straight-line retractable sootblower
• Precautions against catalyst erosion/thermal shock (avoiding moisture in steam)

 Air Heater Cleaning

• Regenerative air heater fouling and cleaning
• Straight-line sootblower
• Swing arm sootblowers
• Dual media cleaning devices
• IK AH 700 sootblower
• Tubular air heater fouling and cleaning
• Rake-type and air puff sootblowers

 Maintenance Considerations

• Avoiding tube erosion and thermal cracking
• Avoiding moisture-related damage
• Sequencing and control of cleaning cycles

Who Can Benefit?

• Mechanical Foremen & Technicians who are Involving in soot blower maintenance

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